Abstract: The invention relates to a process for regenerating a scrubbing liquid which is provided for a gas scrub and is enriched in aromatic hydrocarbons in a regeneration column, wherein the scrubbing liquid enriched in aromatic hydrocarbons is brought into contact with steam in a first regeneration stage of the regeneration column and the aromatic hydrocarbons are thereby partly removed from the scrubbing liquid, the scrubbing liquid purified in the first regeneration stage is divided into a first stream and a second stream, the second stream is discharged as purified scrubbing liquid for the gas scrub, the first stream is, for the purpose of further regeneration, fed to a second regeneration stage of the regeneration column in which the concentration of aromatic hydrocarbons is reduced compared to the concentration in the second stream by contact with steam, a stream of steam is firstly conveyed through the second regeneration stage and subsequently through the first regeneration stage and the first stream is disc

Abstract: The invention relates to a process for removing aromatic hydrocarbons from coke oven gas (COG), in which biodiesel is conveyed in a circuit as scrubbing liquid. The coke oven gas (COG) is brought into contact with the biodiesel in a first gas scrubbing stage to separate off aromatic hydrocarbons. The biodiesel enriched in aromatic hydrocarbons is then taken off from the first gas scrubbing stage, heated and regenerated by stripping with steam. The biodiesel which has been regenerated by stripping is then, after cooling, fed back into the first gas scrubbing stage. According to the invention, the coke oven gas (COG) purified in the first gas scrubbing stage is fed to a further, second gas scrubbing stage to which a more highly stripped substream of the biodiesel is fed as scrubbing liquid.

Abstract: The invention relates to a method of removing aromatic hydrocarbons from coke-oven gas. The coke-oven gas is contacted with a wash liquid in a gas scrubber, and aromatic hydrocarbons are separated by absorption from the coke-oven gas. Subsequently the wash liquid enriched with aromatic hydrocarbons is heated, and the aromatic hydrocarbons are stripped from the wash liquid using water vapor. After cooling the wash liquid is finally returned to the gas scrubber. According to the invention biodiesel is used as the wash liquid.

Abstract: The invention relates to a method of removing aromatic hydrocarbons from coke-oven gas. The coke-oven gas is contacted with a wash liquid in a gas scrubber, and aromatic hydrocarbons are separated by absorption from the coke-oven gas. Subsequently the wash liquid enriched with aromatic hydrocarbons is heated, and the aromatic hydrocarbons are stripped from the wash liquid using water vapor. After cooling the wash liquid is finally returned to the gas scrubber. According to the invention biodiesel is used as the wash liquid.