Return to Abstracts of Literature

Return to Abstracts of Literature 1250-1499

Literature Abstracts

 1462.    HOLLINGS, H.  Removal of Sulfur Compounds From Gas.  Inst. Gas Eng., Pub., No. 175/64, 1937, pp. 4-7, 51-64; Gas Jour., vol. 220, 1937, pp. 475-476, 479-485, 667; Gas World, vol. 107, 1937, pp. 379-383, 471-476, 563.  Chem. Abs., vol. 32, 1938, p. 6437.

        In recent years, large-scale removal of S from gas has depended upon removal of benzene.  The active C process removes about 75% of total S compounds.  The normal oil washing removes only about ½ this amount.  In a modified process, gas is washed with relatively large volumes of oil to remove CS₂.  The oil is regenerated by treatment with K₂CO₃ solution to remove CO₂ followed by alcoholic caustic soda.  The K₂CO₃ is regenerated by heat.  The reaction with alcoholic caustic soda forms Na xanthate; CS₂ and MeOH are recovered by acidification and distillation.  This process does not remove any substantial amount of benzene as wash oil becomes saturated with hydrocarbons.  A catalytic process (abs. 1258) seems best.