• 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:
    1. Process for feeding a suspension of coal into a reactor of a coal gasification plant, characterized in that an ammonium carbonate solution is mixed into the suspension of coal, and the resulting suspension of coal has an acid added to it, and/or is heated.
    公开号:SU936817A3
    申请号:SU792781855
    申请日:1979-06-28
    公开日:1982-06-15
    发明作者:Зайпенбуш Юрген
    申请人:Рурколе Аг (Фирма)；
    IPC主号:
    专利说明:

    (5) METHOD FOR LOADING SOLID CARBON-CONTAINING FUEL INTO GASIFIER The invention relates to the gasification of solid carbon-containing fuel, in particular, to methods for loading solid carbon-containing fuel into a gasifier. Closest to the proposed technical solution is the method of loading solid carbon-containing fuel into a gasifier, including. preparing a suspension of fuel in water by displacing the fuel with water in a ratio of 50-65: 35-50 weight. and flow of the resulting suspension in gasif fbr. A disadvantage of the known method is that due to the high oxygen consumption at the gasification stage and the high content of carbon dioxide in the raw gas, the gasification performance of the slurry is unsatisfactory. The purpose of the invention is to increase productivity. This goal is achieved in that according to the method of supplying solid carbon-containing fuel to a gasifier, which includes preparing a suspension of fuel in water, a solution of ammonium carbonate in ammonia water and phosphoric acid is introduced into the suspension, and the resulting suspension is fed into the gasifier. The drawing shows an installation diagram for implementing the method. The method is carried out as follows. Into the upper part of the gasifier 1, an aqueous suspension of coal is supplied, which is prepared in chamber 2. The water content of the suspension is maximally 20. The suspension is charged using pump 3 Together with the aqueous suspension of coal, oxygen is supplied to the gasifier 1 through feed line 4. The gasification is carried out at a temperature of 50 ° C and a pressure of 30. bar. This produces synthesis gas with a high content of carbon monoxide and hydrogen. This synthesis gas is an important chemical raw material. Together with the synthesis gas, a spar is simultaneously formed, which mainly collects in a water bath in the lower part of the gasifier 1 and with the help of gateway 5 while maintaining a pressure of 30 bar. The raw gas is fed to autoclaves 6 and 7 for removal of carbon dioxide by washing with water. The autoclaves 6 and 7 are connected to the other through pipelines 8 and 9. Pump 10 is located in pipe 8 and throttle 11 is in pipe 9. Pipe 8 enters both sides of the autoclave at both ends, while pipe 9 enters the autoclave with its end autoclave 9 6 below the surface of the water bath 12. The other end of the pipeline 9 enters the autoclave 7 above the surface of the water bath 13. The water in the bath 13 is under the same or slightly lower pressure than the gasifier 1. As a result of this pressure, the main part is not cleaned Carbon dioxide gas is dissolved in water. Carbon dioxide-enriched water due to a large pressure drop between the two autoclaves 6 and 7 through pipe 9 and choke 11 enters the autoclave 7. At the same time, the water pressure through drops 2 is reduced to the desired value, for example, to the pressure in the autoclave 7. During and after a fall the pressure of the water-containing carbon dioxide is released in the form of a bubble. Water collected in the autoclave 7 is discharged by means of a pump 10 and a pipe B is returned to the autoclave 6. In order that the raw gas flowing through the water bath 12 in the autoclave 6 stepped into the pipeline 9, the surface of the water bath 12 should be above the inlet of the pipeline 9 to the autodive 6. This is achieved by p, by adjusting the throttles 11 and / or the pump 10. Necessary adjusting the throttles 11 and / or the pump 10 provides a float in the autoclave 6 ( not shown in the drawing), which is connected to the throttle 11 and / or the pump 10 via a lever mechanism and / or hydraulic unit. The water loss is compensated through the supply line 1 by means of the gate 15. The slag is washed out together with carbon dioxide from the raw gas. A stove included in the pipe 8 and discharged. The carbon dioxide accumulating in the autoclave 7 above the water bath 13 flows through the pipe 16 with a non-return valve 17 into the autoclave 18. In the autoclave 18 there is concentrated ammonia water. When flowing through autoclave 18 and ammonia water, most of the carbon is dissolved in ammonia water and converted into ammonium carbonate. The residual carbon dioxide is discharged through conduit 19. The ammonia water containing dissolved carbon dioxide and ammonium carbonate is removed from the bottom of the autoclave 18 by means of a pump 20 and fed to the conduit 21. The withdrawn amount of ammonia water is continuously compensated through the feed conduit 22 and the valve 23 by means of a pump 2 Coal coming "along with a solution of ammonium carbonate in ammonia water in pipe 21, is ground in a mill 25. Ammonia water can be fed into coal after dry grinding behind a mill 25. In the lead to the gasifier 1 of the pipeline, due to the heating of the aqueous suspension of carbon, carbon dioxide is again released. The ammonium carbonate decomposes after the addition of phosphoric acid to it, fed through pipeline 2b. A fluidizing agent can be added to the suspension, for example gas / by means of nozzles between the mill 25 and the gasifier 1 or between the pump 3 and the gasifier 1, made on the lower side of the supply pipeline. 1 (according to the invention). 6000 kg / h of coal is mixed with kg / h of ash and kg / h of water. After adding 30 kg / h of ammonia, 60 kg / h of ammonium carbonate to 600 kg / h of water and 2.0 kg / h of phosphoric acid, the aqueous coal slurry is fed to a gasifier, which is also fed with 7330 kg / h of oxygen. As a result of gasification at C and a pressure of 30 bar, a raw gas of composition, kg / h, is obtained: carbon dioxide 866, carbon monoxide 9108.8; hydrogen 13.6, hydrogen sulphide 53j1 nitrogen 143.3, water 160, unreacted carbon 275 and ash 402, including phosphates. After separation of the slag, which is removed from the lower part of the gasifier, synthesis gas is obtained, which, after cooling to 200 ° C, is washed with water. This removes 1856 kg / h of carbon dioxide and 52 kg of hydrogen sulfide from the synthesis gas, which is passed through ammonia water composition, kg / h: water 600 and ammonia 60, at 30 ° C and pressure of 2 bar. This produces 60 kg / h of ammonium carbonate, which, together with 30 kg / h of ammonia and 600 kg / h of water, is added to the aqueous coal slurry. 826 kg / h of carbon dioxide and 52 kg / h of hydrogen sulfide were removed from the tank with ammonia water. Thus, 8 kg / h of synthesis gas is obtained, i.e. per kg / h of synthesis gas consumes 0, kg / h of oxygen. Example 2 (known) In the gasifier serves coal suspension containing, kg / h: coal 6000, ash kQO, water and oxygen, 9. As a result of gasification at IEPA and a pressure of 30 bar, a raw gas of composition, kg / h: carbon dioxide, 2, carbon monoxide 6311.6, water 9bЗ, 2, hydrogen 110.0, hydrogen sulfide 56.3 and nitrogen and argon, 6, are obtained which is fed to the purification of carbon dioxide and other impurities.
    权利要求:
    Claims (1)
    [1]
    In this way, synthesis gas is obtained in an amount of 7 kg / h at a flow rate of 9 kg / h of oxygen (0.98 kg / h of oxygen per kg of synthesis gas). This method allows loading into the gasifier a suspension containing not more than 20 water, while the minimum water content of coal suspension is 35 wt.%, This allows increasing the proportion of carbon-containing fuel in the suspension, thereby increasing the productivity of the loading and gasification process and reducing oxygen consumption for gasification. The method of loading solid carbonaceous fuel into a gasifier, including preparing a suspension of fuel in water and feeding the resulting suspension to a gasifier, characterized in that ammonium carbonate solution and phosphoric acid are introduced into the gasifier to increase the efficiency before feeding to the gasifier. Sources of information taken into account in the examination 1. US patent number 39960 9, cl. C 10 J 3/06, 1976.
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    同族专利:
    公开号 | 公开日
    AU4850279A|1980-01-03|
    JPS5844111B2|1983-09-30|
    EP0009073A1|1980-04-02|
    PL216682A1|1980-05-19|
    DE2828457A1|1980-01-10|
    JPS557893A|1980-01-21|
    CA1161254A|1984-01-31|
    AU533129B2|1983-11-03|
    EP0009073B1|1982-06-16|
    DE2963101D1|1982-08-05|
    ZA793254B|1980-08-27|
    BR7904150A|1980-03-25|
    PL120472B1|1982-03-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2130120B2|1971-06-18|1980-04-30|Texaco Development Corp., White Plains, N.Y. |Process for the production of synthesis gas|
    US3929429A|1974-09-26|1975-12-30|Texaco Inc|Fuel gas from solid carbonaceous fuels|
    US4007017A|1975-12-22|1977-02-08|Slater William L|Production of clean synthesis or fuel gas|
    US4040976A|1976-07-06|1977-08-09|Cities Service Company|Process of treating carbonaceous material with carbon dioxide|
    DE2631185A1|1976-07-10|1978-01-19|Texaco Development Corp|Gasification of solid carbonaceous fuels - slurried in liquid carbon dioxide, by continuous partial oxidation|
    US4074981A|1976-12-10|1978-02-21|Texaco Inc.|Partial oxidation process|JPS6337836B2|1981-09-19|1988-07-27|Kawasaki Heavy Ind Ltd|
    JPS6254358B2|1982-02-08|1987-11-14|Kawasaki Jukogyo Kk|
    JPS6312517B2|1982-03-09|1988-03-19|Ube Industries|
    DE4129037C2|1991-08-31|1995-03-30|Steag Ag|Method for introducing fuel into a fuel gasifier coupled to a power plant|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19782828457|DE2828457A1|1978-06-29|1978-06-29|ENTRY OF COAL INTO A COAL GASIFICATION PLANT|
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