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Method for gasifying solid raw material containing carbon

A raw material and solid technology, applied in the field of gasification of solid carbon-containing raw materials, can solve the problems of cooling tower operation damage, impurities, environmental damage, etc.

Active Publication Date: 2014-01-08
LURGI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art known so far, the disadvantage is that the treatment of condensate always produces waste water, which must be released from the gasification process, and despite the above-mentioned purification treatment, often still contains impurities during discharge or use, causing environmental Damage and / or damage e.g. during cooling tower operation

Method used

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  • Method for gasifying solid raw material containing carbon

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Embodiment Construction

[0017] In the gas generator ( 1 ), solid fuel ( 2 ), such as peat, lignite or hard coal, is gasified by adding oxygen ( 3 ) and steam as process steam ( 4 ). Via line (5), the generated feed gas leaves the gas generator (1) and is introduced into a scrubber cooler (6), where the feed gas is contacted with an aqueous wash liquid. During processing, impurities in the gas are absorbed by the washing liquid. The gas condensate via line (7) and the gas via line (9) are transferred to waste heat boiler (8). In the waste heat boiler ( 8 ), the gas is cooled by indirect heat exchange and the steam, mainly water vapor, is condensed out of so-called gas condensate. Via line (10), part of the gas condensate is recycled to scrubber cooler (6). Via line (11 ), the gas leaves the waste heat boiler (8), passes through another condenser (12) and is discharged via line (13) for other uses. Via lines (14) and (15), each gaseous condensate formed in the waste heat boiler (8) and condenser (12...

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Abstract

A method for gasifying solid fuel containing carbon, such as turf, brown coal and hard coal, with the addition of an oxygen-containing gas and steam, wherein the gas condensate accumulating during the washing and cooling of the crude gas is also purified in a manner known per se, subsequently evaporated in the waste heat boiler, the steam is purified by means of thermal catalytic afterburning, the content of water vapor in the flue gas formed in the process is condensed out and the condensate is treated in a boiler feed water conditioning system and evaporated by means of the heat generated in the thermal afterburning, and the steam is supplied as process steam to the gasification of the solid raw materials.

Description

technical field [0001] The present invention relates to a method for gasifying solid carbonaceous raw materials, such as peat, lignite or hard coal, into synthesis gas by adding oxygen-containing gases and steam, which generates little waste water. The term synthesis gas is here meant to contain two gases, one used for example for the synthesis of ammonia, methanol, oxygen-containing gases or Fischer-Tropsch synthesis and the other used as gas turbine fuel or domestic fuel or remote gas. Background technique [0002] Methods for gasifying solid carbonaceous feedstocks are known. These methods include, for example, the Lurgi pressurized gasification method described in the Lurgi Handbuch, chapter 2.1, edition 1970, Lurgi Corporation Association, Frankfurt (LURGI HANDBUCH, chapter 2.1, edition 1970, Lurgi Gesellschaften, Frankfurt am Main) There is a general description in . [0003] An important part of these processes is the treatment of aqueous condensate enriched in hydr...

Claims

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Application Information

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IPC IPC(8): C10J3/06C10J3/02C10J3/60C10J3/62C10J3/84C10K1/04C10K1/00B01D53/00
CPCC10K1/04C10K1/001C10J2300/169C10J2300/165C10J2300/1606C10K1/06C10J3/02B01D53/265B01D2258/0283C10J2300/0976C10J2300/1807C10J2300/0959Y02P20/129
Inventor 格哈德·施密特鲁多夫·W·普拉斯
Owner LURGI
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