C - Chemistry – Metallurgy – 10 – K
Patent
C - Chemistry, Metallurgy
10
K
23/344, 48/46
C10K 1/18 (2006.01) C10B 53/00 (2006.01) C10K 1/02 (2006.01) C10K 1/20 (2006.01)
Patent
CA 1057936
ABSTRACT OF THE DISCLOSURE A process for the purification of gas, which is generated in pressure gasification of coal, which uses a wash oil, especially tar oil, as the washing liquid to avoid clogging of the washing apparatus by tars and tar compounds which precipitate out of the washing liquid when water or aqueous solutions are employed as the washing liquid. The wash oil is preferably used in the circulation, from which solids and tars are continuously removed, and is then again fed into the pressure reactor. The wash oil circulation is continually regenerated through distil- lation and the residues are fed into the pressure reactor. Heat is constantly extracted from the gas before or during the washing in a heat exchange process making it possible to keep the heat loss extremely low and to create optimum temperature at every point of the total cycle by appropriate extraction or addition of heat. The heat ex- tracted may be used for generation of steam, which is fed into the pressure reactor, into the distillation pro- cess for the regeneration and purification of the wash oil, and/or into the discharging flow of purified gas. Desirably the gas is also brought into contact with separating materials such as alkali, earth alkali, dolomite, etc., for the purpose of separating hydrogen sulfide.
233935
Gresch Heinz
Holter Heinz
Igelbuscher Heinrich
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