PATENT

3608. ----- [STEINKOHLEN-BERGWERK “RHEINPREUSSEN”].  [Recovering Light Oils.].  French Patent 872,238, June 2, 1942; appl. filed May 16, 1940.  Chem. Zentralb., 1943, I, p. 807.

For washing the gases an essentially O-free hydrocarbon mixture, such as occurs in the hydrogenation of CO at normal or increased temperature, is used.  The resinous, pitch, and asphaltic substances can be separated from the washing agent after its removal from the washer.