1238. ------. [I. G. FARBENINDUSTRIE A. G.] [Gas Purification.] German Patent Appl. I 68,846, OZ 12,577, filed Feb. 7, 1941 (Cl. IV b-26 d). FIAT Reel 164, frames 3,376-3,380; PB 25,608; Meyer Transl. PC-S-II, Fischer-Tropsch, vol. 7, chap. 186, 1950,

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Patent Abstracts

1238. ------. [I. G. FARBENINDUSTRIE A. G.] [Gas Purification.] German Patent Appl. I 68,846, OZ 12,577, filed Feb. 7, 1941 (Cl. IV b-26 d). FIAT Reel 164, frames 3,376-3,380; PB 25,608; Meyer Transl. PC-S-II, Fischer-Tropsch, vol. 7, chap. 186, 1950, p.11.

In removing organic S compounds and gum-forming substances from gases, the gas before desulfurization is cooled to such low temperatures, preferably –20% to –80°, that the gum-forming substances separate; or, the gas is washed at low temperature with liquids, such as low-molecular alcohols, which have the property of dissolving gum-forming substances.