• 专利附录
  • 专利说明
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    • 专利摘要:
    PROCESSES TO PRODUCE HOT SYNTHESIS GAS AND TO REDUCE THE TAR CONTENT IN SYNTHESIS GAS CONTAINING TAR AND A TAR REMOVAL MECHANISM A process and mechanism are provided to reduce the tar content in a synthetic gas containing tar. The process includes contacting the tar-containing synthesis gas with a gas containing molecular oxygen in a first reaction zone to produce a gas mixture. The gas mixture is passed through a heat treatment zone maintained at a temperature between about 900 ° C to about 2,000 ° C for a contact time of about 0.5 to about 5 seconds. In this respect, at least part of the tar undergoes at least partial cracking and / or oxidation to produce a hot synthesis gas.
    公开号:BR112013025727B1
    申请号:R112013025727-0
    申请日:2012-04-04
    公开日:2020-10-27
    发明作者:Peter S. Bell；Ching-Whan Ko；Joseph Golab；Bernard Descales；Julien Eyraud
    申请人:Jupeng Bio (Hk) Limited；
    IPC主号:
    专利说明:

    DESCRIPTIVE REPORT
    [0001] This claim claims the benefit of United States Interim Orders Nos. 61 / 516,646, 61 / 516,704 and 61 / 516,667 all deposited on April 6, 2011, all of which are incorporated in their entirety here by reference.
    [0002] An equipment and method are provided for the gasification of carbonaceous materials to produce the gas or syngasque or syngasque gas including carbon monoxide and hydrogen. But specifically, the equipment and method are effective for conditioning gas or synthesis gas or producer syngas and reducing the tar content of a tar-containing synthesis gas. BACKGROUND
    [0003] The gasification of carbonaceous materials in an oxygen deprived condition produces synthesis gas (also known as synthesis gas; also known as producer gas) comprising tar. The presence of tar in the synthesis gas presents major technical obstacles in the gasification process causing dirt, clogging of equipment and downstream processes. The condensation of the tar can dramatically stain the gas cleaning equipment and the liquid tar droplets that enter the main engines make it difficult for these end-use synthesis gas applications to function properly. The tar in the syngas can also greatly impact wastewater control. If tar and condensed water are mixed, for example, in gas cleaning systems based on conventional water, they can create a difficult and often costly water treatment problem. To have an acceptable synthesis gas for downstream processes, the content of synthesis gas tar equipment must be reduced. Various methods of reducing or removing tar have been described in the published technique that includes both physical and chemical treatment. Physical treatments for tar removal include the use of a filter and electrostatic tar removal. Chemical treatments include both catalytic and non-catalytic methods. One method of reducing the synthesis gas tar content is thermal destruction, in which the tar undergoes one or both of partial oxidation and thermal cracking. See, for example: “Tar reduction through partial combustion of fuel gas,” Houben, M.P, Lange, H.C. de & Steenhoven, A.A. van, Fuel, vol. 84, pp 817-824, 2005; “Analysis of hydrogen-influence on tar removal by partial oxidation,” Hoeven, T.A. van der, Lange, H.C. de &. Steenhoven, A.A. van, Fuel, vol. 85, pp 1101-1110, 2005.
    [0004] In this method, the synthesis gas containing tar produced from a gasifying unit is passed through a treatment unit or zone and a gas containing oxygen is added. A high temperature is reached in this unit to perform tar cracking and / or partial oxidation. Thus, James T. Cobb, Jr. (“Production of Syngas by Biomass Gasification,” James T. Cobb, Jr., Proceedings of the 2007 Spring National AIChE Meeting, Houston, Texas, April 22-26, 2007) describes a Consutech Gasifier (BRI Energy LLC), the first stage of which is a standard step-grate combustor (often used as an MSW incinerator) that operates as a 510 ° C (950 ° F) gasifier using oxygen-enriched air. The second stage is a heat treater that operates at 1093-1232 ° C (2000-2250 ° F) and uses minimal oxygen to crack tar.
    [0005] WO 2009/154788 describes a two-stage aerator in which the gaseous product from the first stage moves to the second stage. Pure oxygen is introduced in the second stage to increase the temperature from about 954 (1750) to about 1232 ° C (2250 ° F) to perform one or more of the oxidation and partial cracking of tar contained in the gaseous vapor of the first internship.
    [0006] The heat treatment method described above has been shown to be effective in reducing the tar content of the synthesis gas in a small size unit. In this respect, there remains a need to develop knowledge for grading this heat treatment process in order to carry out effective tar removal in large scale units. SUMMARY
    [0007] A process is provided for reducing the tar content in a synthesis gas containing tar. The process includes contacting the tar-containing synthesis gas with a gas containing molecular oxygen in a first reaction zone to produce a gas mixture. The gas mixture is passed through a heat treatment zone maintained at a temperature between about 900 ° C to about 2000 ° C for a contact time of about 0.5 to about 5 seconds. In this respect, at least part of the tar undergoes at least partial oxidation and / or cracking to produce a hot synthesis gas. The gas mixture of the first reaction zone changes the flow direction by colliding on a surface.
    [0008] In one aspect, a linear velocity of a flow of the synthesis gas of tar-containing synthesis gas at an exit from the first reaction zone is greater than about 5 meters per second. At least part of the hot synthesis gas can be introduced into the first reaction zone. In another aspect, a linear speed to height ratio of the heat treatment zone is about 0.3: 12.5 to about 2.0: 2.5. In one aspect, the heat treatment zone includes: (a) a first effective heat treatment zone for the heat treatment of tar contained in the gas mixture to produce a gas mixture containing less tar; and (b) a second effective heat treatment zone for the heat treatment of tar contained in said gas mixture containing less tar to produce hot synthesis gas.
    [0009] A tar removal equipment is provided which is effective in reducing the tar content in a tar-containing synthesis gas to produce a hot synthesis gas. The tar removal equipment includes: (a) a first reaction zone where molecular oxygen is introduced and mixed with said tar-containing synthesis gas to produce a gas mixture; and (b) a heat treatment zone for the heat treatment of tar contained in the gas mixture. The gas mixture of the first reaction zone changes the flow direction by colliding on a surface. The heat treatment zone provides a contact time of about 0.5 to about 5 seconds. In one aspect, the first reaction zone provides a linear flow rate of the oxygen mixture of synthesis gas containing tar greater than about 5 meters per second at the exit of the first reaction zone. In another aspect, the heat treatment zone of the tar removal equipment includes: (a) a first heat treatment zone for the heat treatment of tar contained in the gas mixture to produce a gas mixture containing less tar; and (b) a second heat treatment zone for the heat treatment of tar contained in the gas mixture containing less tar to produce hot synthesis gas. The tar removal equipment is effective in delivering a mixture of gas from the first reaction zone that collides on a surface in less than about 2 seconds.
    [00010] A synthesis gas production equipment is provided which includes (a) a gasification zone where a carbonaceous material is contacted with molecular oxygen and optionally contacted with one or more steam and carbon dioxide to produce a gas synthesis containing tar; (b) a first reaction zone where molecular oxygen is introduced and mixed with the tar-containing synthesis gas to produce a gas mixture; and (c) a heat treatment zone for the heat treatment of tar contained in the synthesis gas oxygen mixture containing tar. The oxygen mixture of synthesis gas containing tar from the first reaction zone changes the flow direction by collision on a surface and the heat treatment zone provides a contact time of about 0.5 to about 5 seconds.
    [00011] A process for reducing the tar content in a synthesis gas containing tar is provided. The process includes: contacting said tar-containing synthesis gas with a gas containing molecular oxygen in a first reaction zone to produce a gas mixture; and passing the gas mixture through a heat treatment zone at a temperature and for an effective time to reduce the tar content of the synthesis gas by at least about 10%. The gas mixture of the first reaction zone changes the flow direction by colliding on a surface. BRIEF DESCRIPTION OF THE FIGURES
    [00012] The above and other aspects, characteristics and advantages of the various aspects of the process will be more evident from the following drawings.
    [00013] Figure 1 is a schematic diagram of tar reduction equipment to reduce the tar content of a synthesis gas containing tar. Figure 1 illustrates an aspect of the equipment that includes the First reaction zone and a Heat treatment zone.
    [00014] Figure 2 is a schematic diagram of tar reduction equipment to reduce the tar content of a synthesis gas containing tar. Figure 2 illustrates an aspect of the equipment that includes a First reaction zone and a Heat treatment zone comprising the Heat treatment zone I and the Heat treatment zone II.
    [00015] Figure 3 is a schematic diagram of a gasification equipment to reduce the tar content of a synthesis gas containing tar. Figure 3 illustrates an aspect of the equipment that includes a gasification zone, a first reaction zone and a heat treatment zone that includes a heat treatment zone I and heat treatment zone II.
    [00016] Figure 4 shows the side and surface views of the aspects of the first reaction zone, the first reaction zone being cylindrical in shape. Figures 4 (I) & 4 (II) show side views of the aspects of the first reaction zone, the first reaction zone being vertical and the gas inlet for molecular oxygen is tilted at an angle to the horizontal line. Figures 4 (III) & 4 (IV) show superficial views or profiles of the aspects of the first reaction zone, the first reaction zone being vertical and the gas inlet for molecular oxygen is tilted at an angle to a diagonal drawn through the intersection point of cross section and axis of gas inlet.
    [00017] Figure 5 shows side and surface views of an aspect of the first reaction zone, the first reaction zone being a vertical cylindrical container with eight gas inlet nozzles attached to it to introduce molecular oxygen.
    [00018] Figure 6 shows side views of aspects of the first reaction zone. Figures 6 (I) & 6 (II) show side views of aspects of the first reaction zone, with the first reaction zone being tilted at an angle to a vertical line.
    [00019] The corresponding reference characters indicate corresponding components in all the various views of the drawings. Experienced technicians will appreciate that the elements in the figures are illustrated for simplicity and clarity and were not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures can be exaggerated relative to other elements to help improve the understanding of the various aspects of the present process and equipment. In addition, common elements, however, well understood that are useful or necessary in commercially viable aspects are not generally described to facilitate a less obstructed view of these various aspects. DETAILED DESCRIPTION Definitions
    [00020] Unless otherwise defined, the following terms as used throughout this specification for the present description are defined as follows and may include the forms or singular or plural of the definitions defined below:
    [00021] The term “about” modifying any quantity refers to the variation in that quantity found in real-world conditions, for example, in the laboratory, pilot plant, or production unit. For example, an amount of an ingredient or measurement used in a mixture or amount when modified by "about" includes the variation and degree of care typically employed in measuring in an experimental condition in the laboratory or production plant. For example, the amount of a component of a product when modified by "about" includes the variation between batches in multiple experiments at the plant or laboratory and the variation inherent in the analytical method. Whether or not modified by "about", the quantities include equivalents for those quantities. Any quantity declared here and modified by "about" can also be used in the present description as the quantity not modified by "about".
    [00022] "Carbonaceous material" as used here refers to carbon-rich material such as coal, and petrochemicals. However, in this specification, the carbonaceous material includes any carbon material, whether solid, liquid, gaseous or plasma. Among the numerous items that can be considered carbonaceous materials, this description contemplates: carbonaceous material, carbonaceous liquid product, carbonaceous industrial liquid recycle, carbonaceous urban solid waste (MSW or msw), carbonaceous urban waste, carbonaceous agricultural material, carbonaceous forest material , carbonaceous wood residue, carbonaceous building material, carbonaceous vegetative material, carbonaceous industrial residue, carbonaceous fermentation residue, carbonaceous petrochemical by-products, carbonaceous alcohol production by-products, carbonaceous coal, tires, plastics, residual plastic, coke oven, fibersoft , lignin, black liquor, polymers, residual polymers, polyethylene terephthalate (PETA), polystyrene (PS), sewage sludge, animal waste, crop residues, energy crops, forest processing residues, wood processing residues, livestock residues , avian waste, food processing waste o, fermentation process residues, ethanol by-products, used grains, used microorganisms, or combinations thereof.
    [00023] The term "fibersoft" or "Fibersoft" or "fibrosoft" or "fibrousoft" means a type of carbonaceous material that is produced as a result of the softening and concentration of various substances; in one example, the carbonaceous material is produced by steam autoclaving various substances. In another example, fibersoft can comprise steam autoclaving of urban, industrial, commercial, medical waste resulting in a soft fibrous material.
    [00024] The term “solid urban waste” or “MSW” or “msw” means the waste comprising household, commercial, industrial and / or residual waste.
    [00025] The term "syngas" or "syngas" means syngas which is the name given to a gas mixture that contains varying amounts of hydrogen and carbon monoxide. Examples of production methods include steam reforming from natural gas or hydrocarbons to produce hydrogen, coal gasification and in some types of waste gasification plants in energy. The name comes from its use as intermediates in the creation of synthetic natural gas (SNG) and to produce ammonia or methanol. Synthesis gas comprises use as an intermediate in the production of synthetic oil for use as a fuel or lubricant through Fischer-Tropsch synthesis and previously Mobil methanol for the gasoline process. Synthesis gas consists mainly of hydrogen, carbon monoxide, and some carbon dioxides, and has less than half the energy density (that is, BTU content) of natural gas. Synthesis gas is combustible and is generally used as a fuel thinner or as an intermediary for the production of other chemicals.
    [00026] "Ton" or "ton" refers to the ton in the United States, that is, about 907.2 kg (2000 lbs).
    [00027] As used herein, the term "tar" includes, without limitation, a gas tar, a liquid tar, a solid tar, a tar-forming substance, or mixtures thereof, which generally comprise hydrocarbons and derivatives thereof. A large number of well-known tar measurement methods exist which can be used to measure tar, a large family of techniques includes analytical methods based on gas or liquid chromatography coupled with a detector. in the case of tar measurement are the flame ionization detector (FID) and the mass spectrometer. Another family of techniques includes spectrometric methods, which include the detection and analysis of a spectrum. This is, for example, infrared, ultraviolet ( UV) or luminescence spectrometry, and LIBS (Laser-induced burst spectroscopy) technique. Another technique for monitoring flue gases is heat spectroscopy. FTIR (Infrared Fourier Transformation) infrared. Several documents mention this technique, such as, for example, W02006015660, W003060480 and United States Patent No. 5,984,998.
    [00028] There are other known electronic methods that allow continuous monitoring of tar. These techniques include detectors with electrochemical cells and sensors with semiconductors. Various gravimetric techniques can also be used for tar measurements. In one aspect, the amount of tar can be expressed as ppm carbon equivalent. In this regard, the hydrocarbon can be benzene or an alcohol, such as methanol. In this respect, the reduction in tar content may mean a concentration of tar equivalent or tar equivalents corresponding to less than about 10 ppm benzene. Detailed Description
    [00029] The following description should not be considered in a limiting sense, however, it is done merely for the purpose of describing the general principles of exemplary modalities. The scope of the invention must be determined with reference to the Claims.
    [00030] Equipment and methods for treating tar-containing synthesis gas to reduce its tar content are provided. In another aspect, equipment and methods for the gasification of carbonaceous material to produce a tar containing synthesis gas and subsequent heat treatment of said tar containing synthesis gas are provided. Various aspects of the equipment of this description are illustrated in Figures 1 to 3.
    [00031] Figure 1 is a schematic diagram of an aspect of tar reduction equipment (10) for reducing the tar content of a tar-containing synthesis gas. Figure 1 illustrates an aspect of the equipment that includes the First reaction zone (200) and a Heat treatment zone (300). Referring now to Figure 1, synthesis gas containing tar (150) and gas containing molecular oxygen (250) are introduced into said first reaction zone. The gas mixture (synthesis gas mixture containing tar and molecular oxygen) is produced in the first reaction zone that enters the heat treatment zone (not shown in the diagram). A stream of hot synthesis gas (450) is removed from the heat treatment zone.
    [00032] Figure 2 is a schematic diagram of an aspect of tar reduction equipment (11) for reducing the tar content of a synthesis gas containing tar. Figure 2 illustrates an aspect of said equipment comprising the First reaction zone (200) and a Heat treatment zone comprising Heat treatment zone I (300) and Heat treatment zone II (400). Referring now to Figure 2, synthesis gas containing tar (150) and gas containing molecular oxygen (250) are introduced into said first reaction zone. The gas mixture (synthesis gas mixture containing tar and molecular oxygen) is produced in the first reaction zone that enters heat treatment zone I (not shown in the diagram). A heat-treated gas mixture leaves the heat treatment zone I and enters the heat treatment zone II. A stream of hot synthesis gas (450) is removed from the heat treatment zone II.
    [00033] Figure 3 is a schematic diagram of a gasification equipment (12) for reducing the tar content of a synthesis gas containing tar. Figure 3 illustrates an aspect of said equipment comprising a gasification zone (100), a first reaction zone (200) and a heat treatment zone comprising heat treatment zone I (300) and heat treatment zone II (400). Referring now to Figure 3, the carbonaceous material food (110) and gas containing molecular oxygen (120) are introduced into the gasification zone which produces a synthesis gas containing tar (not shown in the diagram). Said tar-containing synthesis gas and gas containing molecular oxygen (250) are introduced into the first reaction zone. The gas mixture (synthesis gas mixture containing tar and molecular oxygen) is produced in the first reaction zone that enters heat treatment zone I (not shown in the diagram). The heat-treated gas mixture leaves the heat treatment zone I and enters the heat treatment zone.
    [00034] In this way the tar treatment equipment includes a first reaction zone and a heat treatment zone. Synthetic gas food containing tar is passed through the first reaction zone. The first reaction zone can be a small tube section or a small container of any cross section including, however, not limited to the circular or rectangular cross section an end of which is attached to the heat treatment zone. In one aspect, the cross section of the first reaction zone is circular. In one aspect, the first reaction zone is positioned vertically.
    [00035] A gas containing molecular oxygen is introduced into the first reaction zone. One or more gas inlets (nozzles) can be attached to the first reaction zone for introducing gas containing molecular oxygen. One or more of said nozzles can be positioned perpendicular to the axis of the first reaction zone as shown in Figures 4 (I) & 4 (II). Figure 4 (I) illustrates an aspect of the first reaction zone where the gas inlet for molecular oxygen is tilted at an angle α to the horizontal line with a downward flow direction. Figure 4 (I) shows a side view of an aspect of the first reaction zone with the first reaction zone being vertical and the gas inlet for molecular oxygen is tilted at an angle α to the horizontal line with a downward flow direction. Figure 4 (II) illustrates an aspect of the first reaction zone, where the gas inlet for molecular oxygen is tilted at an angle α to the horizontal line with an upward flow direction. Figure 4 (II) shows a side view of an aspect of the first reaction zone with the first reaction zone being vertical and the gas inlet for molecular oxygen is tilted at an angle α to the horizontal line with an upward flow direction.
    [00036] One or more of said nozzles can be positioned obliquely to a diagonal drawn through the point of intersection of the surface of the first reaction zone and axis of the gas inlet and positioned in a way that facilitates the formation of eddies within the zone of mixture. Figures 4 (III) & 4 (IV) respectively show top views or cross sections of an aspect of the first reaction zone with the first reaction zone being vertical and the gas inlet for molecular oxygen is tilted at an angle α to a diagonal drawn through the intersection point of the cross section and axis of the gas inlet.
    [00037] Figures 5 (I) & 5 (II) respectively show side and surface views respectively of an aspect of the first reaction zone, the first reaction zone being a vertical cylindrical container with eight gas inlet nozzles attached to it. to introduce molecular oxygen. Each nozzle is mounted at an angle α with the horizontal direction with an upward direction of the gas flow. Each nozzle is mounted at an angle β to a diagonal of the cross section drawn through the point of intersection of the nozzle and first reaction zone.
    [00038] In several respects, the first reaction zone can be positioned at an angle to the vertical direction. Figures 6 (I) & 6 (II) respectively show side views of aspects of the first reaction zone, with the first reaction zone being tilted at an angle θ to a vertical line.
    [00039] The heat treatment zone is a container of any cross section including, however, not limited to circular, square, rectangular, etc. In one aspect, the heat treatment zone is positioned substantially vertically. In one aspect, the heat treatment zone is positioned substantially horizontally. In one aspect, the heat treatment zone is positioned at an angle to the horizontal direction. In one aspect, the heat treatment zone comprises multiple sections or sub-areas. In one aspect, the heat treatment zone comprises two sections or sub-zones: Heat treatment zone I and Heat treatment zone II. In one aspect, the heat treatment zone I is horizontal. In one aspect, the heat treatment zone I is vertical. In one aspect, the heat treatment zone II is horizontal. In one aspect, the heat treatment zone II is vertical. In one aspect, heat transfer zone I is positioned at an angle to the horizontal direction. In one aspect, the heat transfer zone II is positioned at an angle to the horizontal direction. In one aspect, the heat transfer zone I is positioned at an angle to the vertical direction. In one aspect, the heat transfer zone II is positioned at an angle to the vertical direction.
    [00040] In one aspect, the tar-containing synthesis gas is subjected to heat treatment in a heat treatment zone to carry out the destruction of tar by one or more of the cracking and partial oxidation and said tar-containing synthesis gas is mixed with gas containing molecular oxygen before destruction in the heat treatment zone. The mixing is carried out in a first reaction zone through which the synthesis gas containing tar is introduced into the said heat treatment zone. The effectiveness of the heat treatment in the heat treatment zone may depend on the effectiveness of the mixture. The efficiency of the heat treatment can be improved by reaching a specified minimum linear velocity of the gas mixture (synthesis gas mixture of tar containing tar) entering the heat treatment zone. The effectiveness of the heat treatment can be improved by changing the flow direction of the gas mixture when it enters the heat treatment zone. The effectiveness of heat treatment can be improved by colliding on a surface when entering the heat treatment zone. The effectiveness of heat treatment can be improved by changing the direction of flow of the gas mixture entering the heat treatment zone by colliding with a surface. In one aspect, the effectiveness of the heat treatment can be improved by colliding the gas mixture from the first reaction zone on a surface of the heat treatment zone.
    [00041] In one aspect, a linear velocity of the gas mixture at the outlet of the first reaction zone is at least 5 meters / second. In one aspect, a linear velocity of the gas mixture is at least 10 meters / second. In one aspect, a linear velocity of the gas mixture is at least 15 meters / second. In one aspect, a linear velocity of the gas mixture is at least 20 meters / second. In one aspect, a linear velocity of the gas mixture is at least 25 meters / second. In one aspect, a linear velocity of the gas mixture is at least 50 meters / second. The height of the heat treatment zone can be in a range of about 1 meter to about 15 meters. In another aspect, a linear speed to height ratio of the heat treatment zone is about 0.3: 12.5 to about 2.0: 2.5. In several respects, the linear speed to height ratio of the heat treatment zone can be selected from 0.3: 12.5, 0.4: 10.0, 0.5: 7.5, 0.6: 6, 25, 0.8: 5.0, 1.0: 4.0, 1.25: 3.75, 1.5: 3.3, 1.7: 3.0, and 2.0: 2.5 . The linear velocity is measured at the output of the first reaction zone. If the heat treatment zone is square or rectangular, then the height will be the internal height. If the heat treatment zone is circular, then the height will be the internal diameter. In another aspect, the gas mixture from the first reaction zone collides on a surface in less than about 2 seconds, in another aspect less than about 1 second, in another aspect less than about 0.5 second, and in another aspect less than about 0.1 second.
    [00042] Factors that can affect the mixing and heat treatment performance include, however, are not limited to a mixture of the length provided by the first reaction zone (for example, height of the first reaction zone), section shape and area cross section of the first reaction zone, ratio of gas containing molecular oxygen to synthesis gas containing tar, length to diameter ratio of the first reaction zone downstream of the oxygen inlet. The number and orientation of the gas inlets (nozzles) for introducing gas containing molecular oxygen can influence the mixture. Mixing can also be improved by inserting mixing devices into the first reaction zone such as deflectors or immobile mixers. The heat treatment mix and performance can be improved by increasing the gas flow rate through the first reaction zone or heat treatment zone. For example, in one aspect, the heat treatment performance can be improved by recycling a portion of the synthesis gas that leaves the heat treatment zone (hot synthesis gas). In another aspect, the performance of the heat treatment can be improved by feeding crude synthesis gas containing tar from more than one source through a first reaction zone and a heat treatment zone. In one aspect, the performance of the heat treatment can be improved by feeding crude synthesis gas containing tar from more than one gasifier through a first reaction zone and a heat treatment zone.
    [00043] To perform one or more of the cracking and partial tar oxidation, the heat treatment zone is maintained at a temperature between about 900 ° C to about 2000 °. In one aspect, the temperature is between about 1000 ° C and about 1700 ° C. In one aspect, the temperature is between about 1100 ° C and about 1500 ° C. In one aspect, the temperature is between about 1200 ° C and about 1250 ° C.
    [00044] To perform one or more of the cracking and partial tar oxidation effectively, the contact time in the heat treatment zone is between about 0.5 to about 5 seconds. In these respects, the process is effective in reducing the tar content of the syngas by at least about 10%.
    [00045] The gas containing molecular oxygen can comprise air. The molecular oxygen-containing gas may comprise oxygen-enriched air. The gas containing molecular oxygen can comprise pure oxygen. The total amount of molecular oxygen added to the tar reduction zone can be in the range of about 0 to about 100 lb-moles per dry ton of carbonaceous material on a dry basis.
    [00046] The gasification zone of the present description can be any gasification equipment described in the prior art such as and not limited to the moving bed, fixed bed, fluidized bed, captured flow, countercurrent ("upper current"), co-current ("current" bottom "), countercurrent fixed bed, countercurrent fixed bed, countercurrent mobile bed, crosscurrent mobile bedcurrent current, hybrid, transverse flow, transverse flow bed, or a part thereof, or combinations thereof. The gasification zone is a unit of transverse flow mobile bed.In one aspect, the gasification zone comprises two or more units or sections or fireplaces to contact said carbonaceous material with gas containing molecular oxygen and optionally with one or more among steam and CO2 to gasify said carbonaceous material and to produce a synthesis gas containing tar. In several aspects, the gasification zone comprises 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 units or sections or fireplaces.
    [00047] Gas inlets for introducing gas containing molecular oxygen may be attached to the gasification zone or one or more sections or units or fireplaces contained therein. Steam or CO2 can also be introduced, optionally through one or more of these molecular oxygen inlets. In one aspect, one or more of the gases containing molecular oxygen, steam and CO2 can be introduced through the gas inlets attached to the gasification zone or to one or more fireplaces or sections or units contained therein. In one aspect, one or more of the gases containing molecular oxygen, steam and CO2 are pre-mixed prior to delivery to the gas inlets attached to the gasification zone or to one or more fireplaces or sections or units contained therein.
    [00048] A food made of carbonaceous material is introduced into the gasification zone. A gas containing molecular oxygen is supplied to the gasification zone. In this way, the carbonaceous material food is treated with molecular oxygen to initiate and facilitate the chemical transformation of carbonaceous material. Carbonaceous food is aerated in the aeration zone to produce a tar-containing synthesis gas. The supply of oxygen in the gasification equipment is controlled to preferably promote the formation of carbon monoxide from carbonaceous material. A substoichiometric amount of oxygen is provided to promote the production of carbon monoxide. A stream of synthesis gas containing tar is removed from the gasification zone.
    [00049] A high enough temperature is reached in the gasification zone to facilitate the gasification of carbonaceous material. However, the temperature is kept low enough so that the non-carbonaceous mineral material contained in the carbonaceous material food does not melt within the gasification zone. In other words, the temperature in any part of the gasification zone may not exceed the temperature of the ash melting point comprising said non-carbonaceous mineral material. Typically, a temperature not exceeding 800 ° C is maintained in the gasification zone as well as in the burn zone. In one aspect, the temperature in the gasification zone is maintained in the range of 250 ° C - 800 ° C. In this way the solid ash comprising said non-carbonaceous mineral material accumulates in the gasification zone and a stream of the solid ash is removed from the gasification zone. In many respects, the temperature in the gasification zone can be in the range of 250 ° C-800 ° C, in the range of 450 ° C-800 ° C, in the range of 650 ° C-800 ° C.
    [00050] To supply molecular oxygen, said gas containing molecular oxygen may comprise air. To provide molecular oxygen, said gas containing molecular oxygen may comprise enriched air. To supply molecular oxygen, said gas containing molecular oxygen may comprise pure oxygen.
    [00051] The total amount of molecular oxygen introduced into the gasification zone through said gas containing molecular oxygen can be in a range of about 0 to about 50 lb-moles per ton of carbonaceous material on a dry basis. The total amount of steam introduced into the gasification zone can be in the range of about 0 to about 100 lb-moles per ton of carbonaceous food on a dry basis, and in another aspect, about 0 to about 50 lb-moles per ton of carbonaceous feed on a dry basis. The total amount of carbon dioxide gases introduced into the gasification zone can be in the range of about 0 to about 50 lb-moles per ton of carbonaceous material on a dry basis. In one respect, both steam and carbon dioxide gases are introduced into the gasification zone. In one aspect, one or more of the steam and carbon dioxide gases are injected into one or more tubes providing oxygen to mix with the oxygen tubes just before the dispensing nozzle.
    [00052] The carbonaceous material fed to the gasification zone may comprise the selection of: carbonaceous material, carbonaceous liquid product, carbonaceous industrial liquid recycle, carbonaceous urban solid waste (MSW or msw), carbonaceous urban waste, carbonaceous agricultural material, carbonaceous material carbonaceous forest, carbonaceous wood residue, carbonaceous building material, carbonaceous vegetative material, carbonaceous industrial residue, carbonaceous fermentation residue, carbonaceous petrochemical by-products, carbonaceous alcohol production byproducts, carbonaceous coal, tires, plastics, waste plastic, coke oven , fibersoft, lignin, black liquor, polymers, residual polymers, polyethylene terephthalate (PETA), polystyrene (PS), sewage sludge, animal waste, crop residues, energy crops, forest processing residues, wood processing residues, livestock waste, avian waste, food processing waste, waste fermentation process, ethanol by-products, used grain, used microorganisms, or combinations thereof.
    [00053] In one aspect of the present description the carbonaceous material fed to the gasification zone comprises a plurality of carbonaceous materials selected from the carbonaceous material, carbonaceous liquid product, carbonaceous industrial liquid recycle, carbonaceous urban solid waste (MSW or msw), urban waste carbonaceous, carbonaceous agricultural material, carbonaceous forest material, carbonaceous wood residue, carbonaceous building material, carbonaceous vegetative material, carbonaceous industrial residue, carbonaceous fermentation residue, carbonaceous petrochemical by-products, carbonaceous alcohol by-products, carbonaceous coal, tires, plastics, residual plastic, coke oven, fibersoft, lignin, black liquor, polymers, residual polymers, polyethylene terephthalate (PETA), polystyrene (PS), sewage sludge, animal waste, crop residues, energy crops, processing residues forest residues, wood processing residues, waste livestock, avian residues, food processing residues, fermentation process residues, ethanol by-products, used grain, used microorganisms, or combinations thereof.
    [00054] While the invention described herein has been described by means of specific modalities, examples and applications thereof, numerous modifications and variations can be made to it by those skilled in the art without departing from the scope of the invention presented in the Claims
    权利要求:
    Claims (16)
    [0001]
    1 - Process to Reduce the Tar Content in Synthesis Gas Containing Tar, in which said process comprises: contacting said synthesis gas containing tar with a gas containing molecular oxygen in a first reaction zone to produce a gas mixture; and passing said gas mixture through a heat treatment zone maintained at a temperature between about 900 ° C to about 2,000 ° C for a contact time of about 0.5 to about 5 seconds, at least a portion of the tar undergoes at least partial oxidation and / or cracking to produce a hot synthesis gas; characterized by that the gas mixture from the first reaction zone changes the flow direction by collision on a surface.
    [0002]
    2 - Process for Reducing the Tar Content in Synthesis Gas Containing Tar, according to Claim 1, characterized in that said heat treatment zone is maintained at a temperature between about 1,000 ° C to 1,500 ° C.
    [0003]
    3 - Process for Reducing the Tar Content in Synthesis Gas Containing Tar, according to Claim 1, characterized in that said heat treatment zone is maintained at a temperature range between about 1,200 ° C to 1,250 ° C.
    [0004]
    4 - Process for Reducing the Tar Content in Synthetic Gas Containing Tar, according to Claim 1, characterized in that a linear velocity of a flow of said mixture of synthesis gas containing tar at an outlet of said first zone of reaction is greater than about 5 meters per second.
    [0005]
    5 - Process for Reducing the Tar Content in Synthetic Gas Containing Tar, according to Claim 1, characterized in that it additionally comprises introducing at least a part of the hot synthesis gas into the first reaction zone.
    [0006]
    6 - Process for Reducing the Tar Content in Synthesis Gas Containing Tar, according to Claim 4, characterized in that a linear speed ratio for height of the heat treatment zone is about 0.3: 12.5 to about 2.0: 2.5.
    [0007]
    7 - Process for Reducing the Tar Content in Synthesis Gas Containing Tar, according to Claim 1, characterized in that the heat treatment zone comprises: (a) a first heat treatment zone for the heat treatment of tar contained in gas mixture to produce a gas mixture containing less tar; and (b) a second heat treatment zone for the heat treatment of tar contained in said gas mixture containing less tar to produce hot synthesis gas.
    [0008]
    8 - Synthesis Gas Production Process, which comprises: treating a carbonaceous material with a gas containing molecular oxygen and optionally with one or more steam and carbon dioxide in a gasification zone to produce a synthesis gas containing tar; passing said synthesis gas containing tar and a gas containing molecular oxygen through a first reaction zone to produce a gas mixture, characterized in that a linear flow rate of said synthesis gas oxygen containing higher tar than about 5 meters per second at an exit from said first reaction zone; and passing said gas mixture through a heat treatment zone maintained at a temperature of about 900 ° C to about 2,000 ° C for a contact time range of about 0.5 to about 5 seconds with at least part of the tar undergoes one or more of partial oxidation and cracking to produce a hot synthesis gas; where the gas mixture from the first reaction zone changes the direction of flow by colliding on a surface. where a linear speed ratio for height of the heat treatment zone is about 0.3: 12.5 to about 2.0: 2.5
    [0009]
    9 - Process To Reduce Tar Content In Synthesis Gas Containing Tar, which comprises: contacting said tar gas containing tar with a gas containing molecular oxygen in a first reaction zone to produce a gas mixture, characterized by a linear flow rate of said synthesis gas oxygen mixture containing tar greater than about 5 meters per second at an outlet of said first reaction zone; and passing said gas mixture through a heat treatment zone at a temperature and for an effective time to reduce the tar content of the synthesis gas by at least about 10%; where the gas mixture of the first reaction zone changes the flow direction by collision on a surface £ where a linear velocity to height ratio of the heat treatment zone is about 0.3: 12.5 to about 2 , 0: 2.5.
    [0010]
    10 - Process To Reduce Tar Content In Synthesis Gas Containing Tar, such a process comprises: contacting said tar gas containing tar with a gas containing molecular oxygen in a first reaction zone to produce a gas mixture, characterized by a linear flow velocity of said synthesis gas oxygen mixture containing tar greater than about 5 meters per second at an outlet of said first reaction zone; and passing said gas mixture through a heat treatment zone maintained at a temperature (T) of about 900 ° C to about 2,000 ° C for a contact time range (Ct) of about 0.5 to about 5 seconds with at least part of the tar undergoing one or more of partial oxidation and cracking to produce a hot synthesis gas; wherein the tar concentration equivalent content of the hot synthesis gas is maintained at less than 10 ppm £ where a linear speed ratio for height of the heat treatment zone is about 0.3: 12.5 to about 2.0: 2.5.
    [0011]
    Process for Reducing the Tar Content in Synthetic Gas Containing Tar, according to Claim 10, characterized in that the tar concentration equivalent content of the hot synthesis gas is maintained at less than 10 ppm through control temperature (T) and / or contact time (Ct).
    [0012]
    12 - Synthesis Gas Production Equipment, comprising: (a) a gasification zone where a carbonaceous material is contacted with molecular oxygen and optionally contacted with one or more steam and carbon dioxide to produce a synthesis gas containing tar ; (b) a first reaction zone, where molecular oxygen is introduced and mixed with said tar-containing synthesis gas to produce a gas mixture, characterized in that molecular oxygen is introduced into the first reaction zone through inlets that include one or more gas inlets connected to the first reaction zone, each gas inlet being angled diagonally across a cross section and axis of the gas inlet; and (c) a heat treatment zone for the heat treatment of tar contained in said tar-containing synthesis gas oxygen mixture, wherein the heat treatment zone includes a first effective heat treatment zone for the thermal treatment of tar contained in the gas mixture to produce a gas mixture containing less tar; and a second heat treatment zone effective for the heat treatment of tar contained in said gas mixture containing less tar to produce hot synthesis gas; wherein the first reaction zone is positioned vertically between the gasification zone and the heat treatment zone; where the first reaction zone and the heat treatment zone have a size and position that allow the tar containing the oxygen mixture from the first reaction zone to change the flow direction by collision on a surface of the heat treatment zone in that said heat treatment zone provides a contact time range of about 0.5 to about 5 seconds. where the heat treatment zone has a size that is a linear speed ratio (meters / seconds) to height (meters) of the heat treatment zone is about 0.3: 12.5 to about 2.0: 2 , 5. wherein the gas inlets in the first reaction zone are angled to supply the molecular oxygen opposite to a gas flow through the first reaction zone.
    [0013]
    Synthesis Gas Production Equipment according to Claim 12, characterized in that the gas mixture of the first reaction zone collides on a surface in less than about 2 seconds.
    [0014]
    Tar removal equipment according to Claim 12, characterized in that the gas mixture of the first reaction zone collides on a surface in less than about 1 second.
    [0015]
    Tar removal equipment according to Claim 12, characterized in that the gas mixture of the first reaction zone collides on a surface in less than about 0.5 second.
    [0016]
    Tar Removal Equipment according to Claim 12, characterized in that the gas mixture of the first reaction zone collides on a surface in less than about 0.1 second.
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    法律状态:
    2018-05-08| B15I| Others concerning applications: loss of priority|
    2018-07-17| B12F| Other appeals [chapter 12.6 patent gazette]|
    2019-08-06| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-04-07| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-08-04| B25D| Requested change of name of applicant approved|Owner name: JUPENG BIO SA (CH) |
    2020-08-18| B25G| Requested change of headquarter approved|Owner name: JUPENG BIO SA (CH) |
    2020-09-01| B25A| Requested transfer of rights approved|Owner name: JUPENG BIO (HK) LIMITED (CN) |
    2020-10-27| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 04/04/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201161516704P| true| 2011-04-06|2011-04-06|
    US201161516646P| true| 2011-04-06|2011-04-06|
    US201161516667P| true| 2011-04-06|2011-04-06|
    US61/516,667|2011-04-06|
    US61/516,704|2011-04-06|
    US61/516,646|2011-04-06|
    US13/427,193|2012-03-22|
    US13/427,193|US8894885B2|2011-04-06|2012-03-22|Apparatus and methods for tar removal from syngas|
    PCT/US2012/032160|WO2012138751A1|2011-04-06|2012-04-04|Apparatus and methods for tar removal from syngas|
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