Coke oven gas contact with liquor concentrate

Claim 1

A process of separating coke oven gas derived from the destructive distillation of coal in a coke oven into its components without addition of external heat comprising: a. feeding said gas directly from the coke oven to a primary cooler, b. directly contacting said gas in said cooler with a liquor, derived from step (j) hereinbelow, to cool said gas, to transfer components from said gas to the liquor, and to heat said liquor, c. withdrawing cooled gas containing remaining components as the overhead from said primary cooler, d. passing at least a portion of said heated liquor from said cooler directly to an evaporator without addition of further heat to said heated liquor, e. applying a vacuum to said liquor in said evaporator to boil said liquor and form a cooled concentrated brine and a vapor without addition of heat, f. condensing a portion of said vapor in an indirect condenser to form a condensate and separately withdrawing said condensate and said uncondensed vapors, g. withdrawing a portion of said brine as concentrated produce, h. passing at least a portion of said heated liquor from said cooler to an indirect heat exchanger, i. removing heat from said heated liquor in said heat exchanger to cool said liquor passed thereto, and j. feeding said cooled liquor from step (i) to said primary cooler for use in step (b).