• 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:
    1517140 Purifying producer gas METALLGESELLSCHAFT AG 2 May 1977 [26 May 1976] 18355/77 Heading C5E A solids-laden crude gas at 350-800‹C, which has been produced by gasifying a solid fuel (e.g. coal) under a pressure of 5-150 bars with steam and/or free O 2 , is purified by removing some of the solids in a coarse purification stage (e.g. one or more cyclones) and then scrubbing the gas with a liquid hydrocarbon at 200-300‹C and having a maximum water content of 5 weight per cent, to give a gas having a high calorific value and low dust content. The gas leaving the coarse purification at above 350‹C may be cooled before scrubbing by being sprayed with water. Preferably at least 70% of the hydrocarbon scrubbing liquid has a b.pt. above 350‹C. The scrubbing may be carried out in one or more Venturi-type or radial flow scrubbers. The used scrubbing liquid may be separated into a heavy phase and a lighter phase, the former being recycled to the gasification reactor, and the latter to the scrubber.
    公开号:SU764616A3
    申请号:SU772482255
    申请日:1977-05-20
    公开日:1980-09-15
    发明作者:Бирбах Херберт；Колен Рудольф；Хафке Карл
    申请人:Металлгезельшафт,Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the field of gas production with a high calorific value and low dust content and can be used in the coke-chemical and chemical industries.
    A known method of gasification of solid fuel under pressure, carried out with oxygen and steam as a means of gas generation in a fixed bed [1]. Carbon dioxide can also be used as a means of gasification. Gases formed as a result of gasification under fuel pressure have dusty and fine-grained solid particles of fuel and / or ash.
    The disadvantage of this method is that the dust content in the raw gas exceeds 10 g / mt so that the use of this gas, for example in working machines, requires dust removal. In addition, the gases formed during gasification of solid fuels with 25 air have a low calorific value.
    Closest to the described invention in technical essence and the achieved result is a 30 method of producing gas, carried out in a radial in-line purifier [2]. The radial in-line cleaner provides a high speed between the gas and droplets of the flushing liquid, which leads to wetting of the dust particles. The flushing fluid consists entirely of hydrocarbons, which are formed during the gasification process and are contained in the crude gas.
    The aim of the invention is to reduce the residual dust content in the gas and increase its calorific value.
    This goal is achieved by a method of producing synthesis gas, including gasification of coal in the presence of water vapor and oxygen at a pressure of 5-150 bar and cleaning the gas obtained from dust by the dry method followed by washing. Rinsing is carried out by spraying the washing liquid taken in an amount of 0.56 l / nm ^ crude gas at a temperature of 200-300 ° C.
    Moreover, the washing liquid contains 70-85% hydrocarbons with a boiling point above 350 C and not more than 2% water.
    z- 3 764 616 4
    Example. Granular solid fuel from the pipeline is pressurized to a gasification reactor at a pressure of 5-150 bar in a fixed bed. Gasification occurs with the supply of oxygen or water vapor through a pipeline, while oxygen can be completely or partially replaced by air. Ash is discharged from the reactor through a pipeline. The crude gas formed in the process of continuous gasification leaves the reactor at a temperature of 520-550 ° C and rushes through the pipeline to a dust removal cyclone, it is cooled in the cooler by irrigation with hot steam to 350 R C. As a result, the water vapor content in the gas increases to 0.27 kg / m 1 * dry gas. In a radial in-line scrubber, the gas is subjected to intensive washing and at the same time 0.5-6 l / m 5 of gas of resinous washing liquid is irrigated, which is 70-85% composed of hydrocarbons with a boiling point above 350 ° C. The cleaned gas leaving the scrubber contains, along with the remaining unchanged gaseous components
    0, .27 kg / steam, 7 kg / m ^ gas gasoline and 47 kg / m 5 resin + oil, relative to dry gas. The lower calorific value of wet gas is 1600 kcal / m.
    ’The gas and flushing fluid from the intensive flushing stage are sent to a recovery boiler, in which part of the heat is converted as a result of indirect heat exchange to 4200 kg / h of high-pressure steam at a pressure of 25 bar. This vapor without additional compression Directly as a gasification vapor can be mixed with gasification air and sent to the reactor. For gasification, a total of 8750 kg / h of water vapor is required, of which 4000 kg / h come from the known water cooling of the reactor shell, 4200 kg / h are produced in a recovery boiler, and the remaining about 550 kg / h are supplied by an external source of water vapor. In the recovery boiler, the purified gas is cooled to 225 ** C. From the sump of the recovery boiler, flushing fluid, thickened due to the evaporation of light boiling components, flows into the resin separator. There, respectively. In accordance with the principle of gravity * there is a separation into the heavier phase, rich in solids, and the light phase, which is rich in solids, which is again used as a washing liquid in the gas purifier15. The residual dust content of the gas is 8-10 g / m
    权利要求:
    Claims (2)
    [1]
    The invention relates to the field of gas production with a high calorific value and dust content and can be used in the coke and chemical industry. A known method of gasifying solid fuel under pressure, carried out with oxygen and water vapor as a means of gas generation in a fixed bed l. Carbon dioxide can also be used as a means of gasification. Gases, formed as a result of gasification under the pressure of fuel, have pulverized and fine-grained solid particles of fuel and / or ash. The disadvantage of this method is that the dust content in the unclean gas exceeds 10 g / m, so that the use of this gas, for example in working machines, requires dedusting. In addition, the gases formed during the gasification of solid fuels with air have a low heat capacity. The closest to the described invention to the technical essence and the achieved result is a method for producing gas, carried out in a radial in-line cleaner 2. A radial in-line cleaner provides high speed between the gas and drops of flushing fluid, which leads to wetting of the dust particles. The flushing fluid consists entirely of hydrocarbons, which are formed during the gasification process and are contained in the raw gas. The aim of the invention is to reduce the residual content of dust in the gas and increase its calorific value. This goal is achieved by the method of producing synthesis gas, including coal gasification in the presence of water vapor and oxygen under a pressure of 5-150 bar and cleaning the resulting gas from dust using a dry method followed by washing. Washing is performed by spraying a washing liquid in an amount of 0. 56 l / nm of raw gas at a temperature of 200-EOO®С. Moreover, the washing liquid contains 70-85% of hydrocarbons with a boiling point of elite and no more than 2% of water. Example. In the gasification reactor, granular solid fuel from the pipeline under a 5–150 bar gasification is fixed in a fixed bed, Gaeifigschy occurs with a pddychöyk lorsda or water vapor through the pipeline, with the oxygen completely or partially replaced by air. Ash through the pipeline is removed from the reactor. Untreated gas formed during continuous gasification leaves the reactor at a temperature of 520-550 ° C and rushes through the pipeline to the dusting cyclone, is cooled in the cooler by bojtf & HHM steam to 350 C. The water vapor in hectares increases as a result This is up to 0.27 kg / m of dry gas. In a radial continuous gas scrubber, the gas is subjected to intensive washing and irrigated with 0.5–6 l / millas of resinous washing liquid, which consists of hydrocarbons with a boiling point higher than 50 ° C by 70–85%. The downstream gas scrubber contains, along with the remaining unaltered gaseous components O, .27 kg / m of water vapor, 7 gasoline and 47 kg / m of resin + oil, relative to the cyxiiM gas. The net calorific value of a wet gas is 1600 kcal / m. The gas and flushing liquid from the intensive flushing stage is directed to the waste heat boiler, whereby and part of the heat is converted into a result of indirect heat exchange in 4200 kg / h of high-pressure steam, which is under a pressure of 25 bar. This steam, without additional compression, can be directly mixed as gasification air directly into the gasification air and sent to the reactor. A total of 8750 kg / h of water vapor is required for gasification, of which 4000 kg / h comes from the known water cooling of the reactor shell, 4200 kg / h are produced in the waste-heat boiler and the remaining about 550 kg / h are supplied by an external source of water. steam. In the recovery boiler, the purified gas is cooled to. From the sump of the waste heat recovery boiler, the washing liquid, condensed due to evaporation of the light boiling components, flows into the tar separator. There, in accordance with the principle of gravity, a heavier phase and a solids-poor light phase are separated into a solid-rich one, which is used as a washing liquid in a scrubber. Residual dust gas content in 8-10 g / M. Claim 1. Method for producing synthesis gas, including coal gasification in the presence of water vapor and oxygen under a pressure of 5-150 bar and cleaning the resulting gas from dust using a dry method followed by washing, characterized in that in order to reduce the residual dust content in the gas and increasing its calorific value, washing is carried out by spraying a squatting liquid in the amount of 0.5-6 liters / nm of raw gas at a temperature of 200-300 s. 2. The method according to Claim 1, which is based on the fact that the washing liquid contains 70-85% of hydrocarbons with a boiling point above 35 ° C and no more than 2% of water. Sources of information taken into account in the examination 1. US patent number 2667408, cl. 23-2, pub. 1975
    [2]
    2. US patent number 2781246, cl. 23-209.4 publ. 1951 (pro, totype). .
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    同族专利:
    公开号 | 公开日
    PL198402A1|1978-02-13|
    PL101782B1|1979-01-31|
    GB1517140A|1978-07-12|
    DE2623489A1|1977-12-15|
    DE2623489C2|1986-10-30|
    CS198230B2|1980-05-30|
    DD132979A5|1978-11-22|
    ZA771187B|1978-01-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2555046C2|2009-09-25|2015-07-10|Стихтинг Энергиондерзук Сентрум Недерланд|Method and device for tar removal from synthesis gas resulted from biomass gasification|
    RU2572998C2|2010-11-10|2016-01-20|Эр Продактс Энд Кемикалз, Инк.|Synthetic gas produced by plasma arc gasification|DE1071886B|1959-12-24|
    DE2429439A1|1974-06-19|1976-01-15|Heinz Hoelter|Gas washing - of gas from pressure coal gasifier using oil-water emulsion as wash liquid|US4317703A|1980-12-03|1982-03-02|American Can Company|Pyrolysis process utilizing pyrolytic oil recycle|
    GB2125429B|1982-08-04|1986-12-31|Humphreys & Glasgow Ltd|Tar removal process|
    GB2125060B|1982-08-04|1986-08-28|British Gas Corp|Purifying aqueous effluents in synthesis gas purification|
    DE4325689B4|1993-07-30|2004-01-29|Siemens Ag|Waste processing facility|
    DE19529536B4|1995-08-11|2005-10-20|Schroeder Sascha|Process for the treatment and conditioning of fuel gas|
    DE102013101945A1|2013-02-27|2014-08-28|Thyssenkrupp Uhde Gmbh|Process for the reuse of by-products from gasification plants|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2623489A|DE2623489C2|1976-05-26|1976-05-26|Process for generating a high calorific value, low-dust gas|
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