초록 ▼

A process for separating organic compounds, such as solvents, from gases, e.g. waste gases of paint shops. The gases to be treated are conducted in an adsorber over a sorbent which is composed of particulate activated carbon in an oxidic carrier. The charged sorbent is regenerated by passing thereth

A process for separating organic compounds, such as solvents, from gases, e.g. waste gases of paint shops. The gases to be treated are conducted in an adsorber over a sorbent which is composed of particulate activated carbon in an oxidic carrier. The charged sorbent is regenerated by passing therethrough, preferably according to the countercurrent principle, a heated regeneration gas, the regeneration gas charged with desorbate is cooled so that organic compounds condense and can then be separated, whereupon the regeneration gas is reheated and reused for the desorption of the charged sorbent. Heating of the regeneration gas as well as cooling of the regeneration gas charged with desorbate are, at least partially, effected by a heat pump. It will be expedient to provide at least two adsorbers which are charged and regenerated alternately. An apparatus for carrying out the process is additionally described.

대표청구항 ▼

[ We claim:] [1.] A process for separating organic compounds from gases, wherein the gases to be treated are passed in at least one adsorber over a sorbent comprising a particulate activated carbon in an oxidic carrier, whereby said sorbent is charged with organic compounds and the gas freed from sa

[ We claim:] [1.] A process for separating organic compounds from gases, wherein the gases to be treated are passed in at least one adsorber over a sorbent comprising a particulate activated carbon in an oxidic carrier, whereby said sorbent is charged with organic compounds and the gas freed from said organic compounds can then be discharged into the environment, the charged sorbent being regenerated by passing therethrough a heated regeneration gas heated to a temperature of from 60.degree. C. to 80.degree. C., the regeneration gas charged with desorbate being cooled to a temperature in the range of less than 10.degree. C. so that organic compounds condense and can be separated, with the proviso that heating of the regeneration gas prior to passing said gas through the sorbent as well as cooling of the regeneration gas charged with desorbate are carried out by heat exchangers connected to a heat pump with heating and cooling of the regeneration gas being fully effected by said heat pump, and wherein at least one flow parameter selected from pressure, volume flow and temperature of the gas to be treated is varied as the gas is passed through the sorbent.