• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SUMMARY The present invention relates to a heat transfer solution and a biogas system comprising such a solution. A system 1 for a biogas production plant according to the present invention comprises: a heat transfer system 23 designed for all heat transfer by means of a heat exchanger 50 and at least one circuit 47, characterized in that the heat transfer system 23 comprises at least one removable, flat heat exchanger element 40 connected in a circuit 47. The invention further comprises the use of a heat transfer solution, as well as a heat transfer solution for use in a system for a biogas production plant.
    公开号:SE1150886A1
    申请号:SE1150886
    申请日:2011-09-27
    公开日:2013-03-28
    发明作者:Erik Erjeby
    申请人:Swedish Biogas Internat Ab；
    IPC主号:
    专利说明:

    TECHNICAL FIELD The present invention relates to a heat transfer solution 23 comprising plate heat exchangers in a system 1 to a plant for biogas production.
    BACKGROUND There are various known processes that are suitable for the extraction of biogas in plants for biogas production or plants for rooting of organic materials. These known processes are either one- or two-step processes, used in the waste or the formed fertilizer is used once or twice before it is removed from the plant for biogas production.
    Biogas production plants use anaerobic rooting and root organic material without the presence of oxygen. The rate of anaerobic rooting and thus the rate at which biogas is formed depends on the rooting temperature. The actual rooting is made possible, for example, by the presence of methanogens, which are microorganisms that can produce methane. Different species of bacteria can survive in different temperature ranges. Those that live optimally at temperatures between and 42 ° C are called mesophilic or mesophilic bacteria and are the most widely used type of biological rooting organisms in the world. Some of the bacteria can survive under the warmer and more inhospitable conditions of 55-60 ° C; they are called thermophilic or thermophilic bacteria. These latter types of bacteria can also be used as rooting organisms. Rooting consumes a lot of energy.
    Another form of digestion takes place in an aerobic digestion process where oxygen is introduced into the digestion process. A common example of aerobic rooting is composting, where organic matter is decomposed and recycled as a fertilizer and soil improver. The end products from the aerobic rooting process are mainly carbon dioxide and water. This differs from an anaerobic process used in the system 1 of the biogas production plant according to the present invention, used in an anaerobic purification of organic material resulting in biogas as one of the products.
    The anaerobic rooting process described in the present invention consumes a lot of heat during the decomposition phase. To save energy, some anaerobic plants for biogas production have a countercurrent heat exchanger system installed. In a 2 countercurrent heat exchanger system, the organic material meets the rooted substrate in a countercurrent vane in the various media is accompanied by a solid rock of a heat conducting material.
    Root chambers in an anaerobic plant for biogas production are usually equipped with heating and / or cooling equipment to enable heating and / or cooling of the root chamber cistern.
    Specific background Today, the heating of a biogas process usually takes place inside a biogas reactor, either with tubes fixed to the cradle or through the use of a circulation system. To save some energy, the incoming organic sludge material, for example goods, can be preheated in a countercurrent heat exchanger, where the hot rooted substrate from the root chamber meets the cold incoming goods.
    Heat exchangers in the form of pipes inside the root chamber collect dirt and detached surface particles from the sludge in motion. In addition, since the process in the root chamber is anaerobic, the entire biogas production plant must be shut down for cleaning and repair; participate with downtime in the facility.
    The heat transfer solutions that are commonly used today in biogas production plants are fixed equipment that often requires the entire system until the biogas production plant is shut down during service and repairs.
    Therefore, there is a need for a cost-effective, reliable and flexible heat transfer solution for systems to plants for biogas production.
    PRIOR ART US 4,750,454 describes a system for anaerobic rooting of goods which uses developed biogas to power an electric generator. The goods are heated using water pipes. RU2408546 C2 describes a sludge digestion tank for anaerobic treatment of organic waste, including cylindrical bushing, manifolds, manifolds for biogas supply, central pipes with hollow cracks and manifolds, manifolds for biogas outlets, and vertical devices. The root chamber comprises a heating casing.
    OBJECTS OF THE INVENTION An object of the present invention is to build and manage a plant for biogas production as cost-effectively and energy-efficiently as possible. 3 Other objectives are: AU to achieve a more energy-efficient plant for biogas production.
    To provide a more reliable and flexible system that facilitates the management of the plant, and also reduces the downtime of the plant during service and repairs.
    SUMMARY An object of the present invention is to build and manage a plant for biogas production as cost-effectively and energy-efficiently as possible and to achieve a more energy-efficient plant for biogas production or to provide a more reliable and flexible system that facilitates the reduction of the plant, the reduction and reduction of the plant. during service and repairs. These problems are solved by the invention according to claim 1.
    This invention relates to a system for a biogas production plant comprising: a heat transfer system designed to transfer heat by means of a heating cold and at least one circuit, characterized in that the heat transfer system comprises at least one removable, flat heat exchanger element connected in a circuit.
    Other compatible aspects of the invention are: A system for a plant for biogas production according to the invention comprising a root chamber, used in the root chamber comprising a chamber for a root residue with a partition, said system comprises a detachable, substantially flat heat exchanger element in direct or indirect contact with the root residue.
    A system for a plant for biogas production according to the invention used in said flat heat exchangers are made of a flexible material and used in the form of said flat heat exchangers can be adapted to the shape of the surface on which they are to be fixed.
    A system for a biogas production plant according to the invention used in said flat heat exchangers is constructed of a flexible material which is suitable for heat transfer, for example plastic materials, for example polyethylene, polyurethane, silicone materials or similar materials.
    A system for a plant for biogas production according to the invention used in said flat heat exchangers 40 are fixed to the system for the plant for biogas production with 4 detachable links.
    A plant for biogas production according to the invention, used in said flat heat exchanger is provided with a flat surface fixed abutment against the outside of the partition wall.
    A plant for biogas production according to the invention, used in said heating cold, is selected from: a heat pump, a cogeneration unit (combination of heat and energy) or a burner such as methane gas, oil, diesel, wood, wood chips, wood, straw or the like.
    A plant for biogas production according to the invention, used in the said circuit is constructed of: pipes or casings made of materials selected from PE plastic, copper, jam or other water pipe systems. A biogas production plant according to the invention, used in at least one flat heat exchanger is used for heating.
    A plant for biogas production according to the invention, used in at least one flat heat exchanger is used for collecting heat.
    A plant for biogas production according to the invention, used in at least one flat heat exchanger is used for heating and at least one flat heat exchanger is used for collecting heat.
    A plant for biogas production according to the invention, used in at least two flat heat exchangers is detachably connected in series.
    A plant for biogas production according to the invention, used in said flat heat exchanger is provided with a flat surface placed directly in line with the outside of the partition.
    A plant for biogas production according to the invention, used in naninda heat exchangers is arranged inside the chamber in direct contact with the root residue.
    A plant for biogas production according to the invention, used in said heat exchangers, is provided with a flat surface fixed in direct contact with an inside of the side wall cradle.
    A plant for biogas production according to the invention, the vani chamber is a root chamber to a root chamber with an inner cradle, the separating cradle and an outer cradle being provided with insulation in between, and a substantially flat heat exchanger element provided with a flat surface fixed in direct contact with the outside of the slab cradle.
    A plant for biogas production according to the invention, used in the flat surface, extends over substantially the entire one side of the heat exchanger and the entire flat surface is arranged in direct contact with the outside of the inner cradle.
    Use of a heat transfer system according to the invention comprising a heat source and at least one circuit, characterized in that the heat transfer system is a system according to the invention and comprises at least one detachable, flat heat exchanger element connected in a circuit in a plant for biogas production.
    A heat transfer system designed to transfer heat by means of a heat source and at least one circuit, characterized by the whole heat transfer system, is a heat transfer system according to the invention and comprises at least one removable, flat heat exchanger element connected in a circuit in a biogas production plant.
    BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a schematic view of a system for a biogas production plant according to an exemplary embodiment of the invention.
    Fig. 2 shows another schematic view of a system for a biogas production plant according to an exemplary embodiment of the invention.
    Fig. 3 shows a schematic view of a heat transfer system in an exemplary embodiment according to the invention.
    Fig. 4 shows a schematic view of a heat transfer system according to an exemplary embodiment of the present invention with three flat heat exchanger elements in series.
    Fig. 5 shows a schematic, more detailed view of an exemplary heat exchanger element according to the invention, placed on the outer wall of the root chamber.
    Fig. 6 shows a schematic view of an exemplary embodiment of a flat heat exchanger placed inside the root chamber according to the invention.
    Fig. 7 shows a schematic view of an exemplary embodiment of a system for a plant for biogas production comprising a combined front well and after well according to the invention comprising a heat exchanger operating a heat pump, used in the flat heat exchanger elements 40 collecting heat for heating the root chamber.
    Fig. 8 shows a schematic view of an exemplary embodiment of a heat transfer system 23 according to the invention of heat collected by means of a heat exchanger element inside the after-well. The heat exchanger element is further connected to a heat pump. The heat pump is also connected to another flat heat exchanger element 40, 6 which distributes the collected heat and also the supplied heat from a heat pump, to the root chamber.
    Fig. 9 is a detailed view of an exemplary embodiment of a flat heat exchanger element according to the invention.
    DETAILED DESCRIPTION Introduction The present invention relates to a system for a plant for biogas production 1 which roots organic material in an anaerobic rooting process which produces biogas and high quality fertilizers.
    The biogas production plants according to the invention produce biogas. The produced biogas can be distributed and sold as uncharged biogas or CNG (compressed natural gas) or used directly as energy cold in a cogeneration unit (combined heat and energy unit) for the production of electricity and heat to the biogas production plant.
    Biogas is a term used to denote a mixture of different gases (varied composition) that is produced as a result of the action of anaerobic microorganisms on organic material. It contains methane for the most part (50-68%) and other gases in relatively small proportions, namely, CO2 (25-35%), H2 (1-%), N2 (2-7 0) and O2 (0- 0 , 1%).
    The organic material used in the system 1 for the biogas production plant according to the invention can be any kind of organic material, for example waste with a high proportion of fat, a high proportion of protein or a high proportion of carbohydrates. Specific examples of suitable waste for use in the biogas production plant according to the present invention are: grazing frogs, fine cereals, cooking oil, potato peelings, goods, liquid goods, slaughterhouse waste, organic household waste or various residues from the food industry or bioenergy production. The most preferred organic material for use in the system 1 of the biogas production plant according to the invention is liquid goods. The incoming organic material already has a high water content and around 3-10% dry matter and does not need to be further moistened before use in the system 1 of the biogas production plant according to the invention. The system 1 for the biogas production plant according to an exemplary embodiment according to the invention comprises an inlet 10 in the form of pipes and / or a hall or an opening for supplying solid material in the well 12, at least one pump for pumping the organic material inside the system, lines 18 used in organic material are transported, a root reactor 24 used in the rooting process and also a gas outlet 30, as well as gas collection equipment 70 for collecting the gas formed. Furthermore, the system 1 for the plant for biogas production also comprises outlet lines 35 used in the rooted residual products transported away from the system 1 for a plant for biogas production for storage. See Fig. 1. Usually the organic material is used once or twice before it is removed from the plant.
    The system 1 for the biogas production plant according to another exemplary embodiment according to the invention comprises an inlet 10 in the form of pipes and / or a hall or an opening for the supply of solid material in the well 12, pumps 20, 32, 36 for all pumping the organic the material inside the system, lines 18, 34, 35 used in organic material are transported, a root reactor 24 from the rooting process acts as a space and also a gas outlet 30, as well as gas collection equipment 70 for all collecting the gas formed. There is also one or more sludge heat exchangers 26 between the well and the root chamber. 2. The organic material is usually used once or twice before it is removed from the plant.
    Systems for plants for biogas production are systems used for the production of biogas by drawing organic material. Systems for biogas production plants according to the invention use anaerobic rooting processes for rooting the organic material. In the root reactor, the organic material from the well is stored for about 30 days, for example 35 days, together with methanogens at a temperature of 35-70 ° C, for example between 35 and 42 ° C. Methanogens are used to root the organic material inside the root chamber 24. Methanogens are active at the mentioned temperatures. Mesophiles are active in the preferred temperature range of 35-42 ° C.
    Heat transfer system The heat transfer system 23 according to the invention to heat by means of a heat source 50 and at least one circuit 47 and at least one flat heat exchanger element 40 connected in the circuit; see Fig. 3. 8 In alternative embodiments of the invention, the heat transfer system 23 according to the invention may comprise a circuit and be used for heating (of for example the root reactor) or comprise two circuits and be used for all collecting heat from one place (from for example the afterburner) and transferring the heat collected to another location (for example, to the root chamber). See Fig. 8.
    In an exemplary embodiment of the heat transfer system 23 according to the invention, in Fig. 8, the system comprises two circuits: a collecting circuit 49, which collects heat from an external Ulla by means of a flat heat exchanger element 40, and a heating circuit 47, which is used for heating by to use a flat heat exchanger element 40.
    The collection circuit 49 collects heat, for example from the after-well 16 in the system for the biogas production plant according to the invention, comprising hot rooted residues, and the heating circuit is connected to the collection circuit so that all the collected heat is used while heating the media in the heating circuit 47. the various circuits 47, 49 are a heat cold 50; it may be, for example, a heat pump or similar device, which may use heat from one cold to another. A heat pump is a machine or device that dissipates heat from one place ("cold") at a lower temperature to another place ("sankan" or "heat sink") at a higher temperature by means of mechanical work.
    The heat transfer system 23 according to the invention comprises flat heat exchangers 40, which may be connected and used in series; Fig. 3 shows an exemplary embodiment of a heat transfer system 23 with three flat heat exchanger elements in series. Each separate flat heat exchanger element is replaceable and is therefore easily connected to and disconnected from the heat transfer system 23 to which it belongs. Preferably, the flat heat exchanger elements 40 according to the invention have substantially flat surfaces, which provide good heat transfer and are easy to clean.
    The heat transfer system 23 according to the invention comprises flat heat exchangers 40, which are constructed of a flexible material which is suitable for heat transfer, for example heat-conducting material. Suitable materials are plastic materials, for example polyethylene (PE) or polyurethane (PU) or silicone materials. The flat heat exchanger elements according to the invention can be used for all collecting heat or emitting heat depending on the area of use. (See the non-limiting examples above and below.) The size of the flat heat exchangers may vary depending on the application. The flat heat exchanger elements are easy to clean and can be used inside the root chamber and inside the well in the biogas production plant; Fig. 6 shows the location of the flat heat exchanger elements inside the root chamber. In other embodiments, the flat 9 heat exchanger elements 40 are used outside the root chamber or outside a well construction but are in contact with the root chamber or the well cradle for all achieved good heat transfer. The flat heat exchanger elements are protected against external influences if they are located outside the root chamber between the partition 25 and the insulation of the root chamber 140; see Fig. 5. Due to the flexible materials used for the construction of the flat heat exchanger elements, they can be shaped so as to follow the surface of the root chamber tank or the inside of the root chamber tank without accumulating dirt due to its flat surface. The flat heat exchanger element according to the invention is also easy to disconnect or replace and to clean.
    Furthermore, the heat transfer system 23 comprises wires or housings, which together with the flat heat exchanger elements 40 form circuits connected to heating sources. An example of a heat cold 50 according to the heat transfer system 23 according to the invention is a heat pump, which has a cold and a hot circuit connected and allows heat transfer between the circuits.
    The conduits or housings used to connect the flat heat exchanger elements to each other are also interchangeable and thus easy to connect to and disconnect from the heat transfer system 23 to which they belong. The pipes or housings are made of materials that are normally used for water transport in heating systems, for example various forms of plastic material such as PE plastic, PU plastic or silicone material.
    Lamp media is used within the circuit systems of the invention. Suitable media are, for example, all water shoes that are suitable for heat transfer. Non-limiting examples of such suitable media are water, glycol or mixtures of water and glycol or various types of oils, for example silicone oils, PEG.
    According to alternative embodiments of the present invention, one or more flat heat exchanger elements 40 are fixed to the outer partition 25 of a rich chamber tank 24.
    The system of flat heat exchangers according to the present invention comprises flat heat exchanger elements 40 which can be adapted to different sizes and shapes of the surfaces with which they are to exchange heat - the number of elements is Mt to vary, each element has a flat surface - which allows direct contact with the whole surface, and is made of a flexible material, which allows direct contact with curved surfaces.
    The great advantage of the system lies in no parts of the system 23 with flat heat exchangers according to the invention are installed inside the root chamber and also not permanently on the system 1 to the plant for biogas production.
    This reduces the risk of having to shut down the system for cleaning, as the flat heat exchangers 40 are easy to clean and can be replaced without shutting down the entire system.
    The heat theater extraction system according to the invention is energy efficient; it can be adapted to solar-powered heating systems or other suitable heating sources, for example heat pumps that use, for example, water in algae as collection media.
    The installation of the flat heat exchanger elements 40 is easy, since the elements are adapted for all joining.
    A further beneficial effect of the system of the present invention is that the installation costs, as well as the operating and maintenance costs, can be kept very low compared to previous solutions.
    Use of the heat transfer system In an alternative embodiment, the heat theater recovery system and method of the present invention can be used to reduce the energy consumption in the system 1 of the biogas production plant by recovering the heat during the decomposition phase in a flexible and efficient manner thanks to the invention. flat heating elements placed inside or in contact with the after-well containing hot rooted residues. The media inside the flat heat exchanger elements 40 use the heat recovered from the after-well. The circuit 47 is connected to a heat source 50 which uses the heat recovered by the flat heat exchanger elements 40 from the after-well 16 in the system 1 to the biogas production plant according to the invention and then recycles the heat formed from the rooted goods. See Fig. 8.
    In addition, according to exemplary embodiments, the heat exchanger is made of a flexible material and its shape can be adapted to the shape of the surface on which it is to be attached. If, for example, one or more heat exchangers are fixed on a root chamber which is cylindrical, it is possible for the heat exchangers to apply the heat exchanger element to the curved surface of the root chamber so that substantially all of the flat surface of the heat exchanger element is in direct contact with the curved surface.
    The flat heat exchanger elements 40, see for example Fig. 9, are developed and used, for example, as cheap solar panels today. The flat heat exchanger elements of this type are usually installed on roofs or other suitable surfaces. In the biogas industry, or similar industries, 11, however, there is no use of flat heat exchangers 40 for heat transfer according to the system and method of the present invention today.
    Exemplary Embodiments According to an exemplary embodiment, the heat exchanger element 40 has at least one flat surface, which enables maximum efficiency in the heat transfer between the flat heat exchanger element 40 and a substantially flat surface with which the heat exchanger is in contact. For example, if the flat side of the flat heat exchanger element 40 is in contact with a flat surface such as a cradle or other substantially flat, smooth and non-curved surface, substantially the entire flat surface X of the heat exchanger element 40 will be in direct contact with the surface. . As a result, essentially no energy is lost in the transfer process.
    In addition, according to exemplary embodiments, the heat exchanger is made of a flexible material and its shape can be adapted to the shape of the surface on which it is to be attached; see for example Fig. 4. If, for example, one or more heat exchangers are fixed to a root chamber which is cylindrical, the flexibility of the heat exchangers makes it possible to apply the heat exchanger element to the crimped surface of the root chamber so that substantially the entire flat heat exchanger element is in direct contact with the root chamber hook. surface.
    The surface with which the flat heat exchanger is in direct contact is preferably of a material which has heat-conducting properties. For example, the surface may be a stable plate or a cradle.
    权利要求:
    Claims (19)
    [1] 1. CLAIMS 1 1.
    [2] 2.
    [3] 3.
    [4] 4.
    [5] 5.
    [6] 6.
    [7] 7.
    [8] 8. A biogas production plant system comprising: a heat transfer system (23), which is adapted to transfer heat using a heat source (50) and at least one circuit (47) characterized in that the heat transfer system (23) comprises at least one detachable flat heat exchanger element (40) coupled in a circuit (47) and wherein the heat exchanger element is placed outside or inside a digester or a well.. A biogas production plant system according to claim 1 comprising a digester wherein the digester comprises a chamber for a digestate having a delimiting wall(25),said system comprises a detachable substantially flat heat exchanger element in direct or indirect contact with the digestate. A biogas production plant system according to any of the preceding claims wherein said flat heat exchangers (40) are made of a flexible material and wherein the shape of said flat heat exchangers (40) may be adapted to the shape of the surface onto which they are to be attached. A biogas production plant system as according to any of the preceding claims wherein said flat heat exchangers (40), are constructed of a flexible material suitable for heat transfer, for example plastic material, for example poly ethylene, poly uretane, silicon material or similar materials. A biogas production plant system according to any of the preceding claims wherein said flat heat exchangers 40 are attached to the biogas production plant system by detachable links The biogas production plant as according to any of the preceding claims; wherein said flat heat exchanger is configured with a flat surface attached abut to the outside surface of the delimiting wall. The biogas production plant according to any of the preceding claims, wherein said heat source is selected from; a heat pump, a CHP-unit (Combined Heat and Power) or a burner running on methane gas, oil, diesel, wood, wood chips, saw dust, straw or similar. The biogas production plant according to any of the preceding claims, wherein said circuit is construed of; pipes or housings are made of materials selected from; PE- 2 plastic, copper, iron or other water piping systems.
    [9] 9. The biogas production plant according to any of the preceding claims, wherein at least one flat heat exchanger is used for heating 10.
    [10] The biogas production plant as according to any of the preceding claims, wherein at least one flat heat exchanger is used for collecting heat. ii.
    [11] The biogas production plant according to any of the preceding claims, wherein at least one flat heat exchanger is used for heating and at least one flat heat exchanger is used for collecting heat.
    [12] 12. The biogas production plant according to any of the preceding claims, wherein at least two flat heat exchangers are detachably coupled in a series.
    [13] 13. The biogas production plant according to any of the preceding claims, wherein said flat heat exchanger is configured with a flat surface directly aligned to the outside surface of the delimiting wall.
    [14] 14. The biogas production plant according to any of the preceding claims, wherein said heat exchanger is arranged within the chamber in direct contact with the digestate.
    [15] 15. The biogas production plant according to any of the preceding claims, wherein said heat exchanger is configured with a flat surface attached in direct contact with an inside surface of the delimiting wall.
    [16] 16. The biogas production plant (1) according to any of the preceding claims, wherein the chamber is a digestion chamber of a digester (24) having an inner wall, the delimiting wall (25) and an outer wall (141) provided with insulation (140) in between, and a substantially flat heat exchanger element (40) being configured with a flat surface attached in direct contact with the outside surface of the delimiting wall (25).
    [17] 17. The biogas production plant according to any of the preceding claims, wherein the flat surface extends substantially over the whole of one side of the heat exchanger and the whole flat surface is arranged in direct contact with the outside surface of the inner wall. 3
    [18] 18. Use of a heat transfer system (23) comprising a heat source (50) and at least one circuit (47) to reduce energy consumption characterized in that the heat transfer system (23) is a system according to any of the preceding claims and comprises at least one detachable flat heat exchanger (40) element coupled in a circuit in a biogas production plant.
    [19] 19. A heat transfer system (23), which is adapted to transfer heat in a biogas production plant using a heat source (50) and at least one circuit (47) characterized in that the heat transfer system (23) is a heat transfer system (23) according to any of the preceding claims and comprises at least one detachable flat heat exchanger element (40) coupled in a circuit (47) in a biogas production plant. 1/9 2. 9 rk Fl 61. 4gC 2/9 36 ZO FI6ORE2... 10 6ukE ço MEI 1-1.10 iOuRE 1.1 4/9 5/9 Fi :4ki ize- 5- t 7/9 Ft6u25, '3- 8/9 FT GLARE 9. 9/9 .t6ui2E9
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    同族专利:
    公开号 | 公开日
    SE537369C2|2015-04-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2016-05-03| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1150886A|SE537369C2|2011-09-27|2011-09-27|Flat heat exchangers for heat transfer in a plant bypass gas production|SE1150886A| SE537369C2|2011-09-27|2011-09-27|Flat heat exchangers for heat transfer in a plant bypass gas production|
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