FIELD: petrochemical industry. SUBSTANCE: gaseous products of catalytic cracking are compressed, condensed, and fed to an absorber; the liquid fraction from the absorber is fed to a debutanizing column. The gaseous fraction from this column is condensed. The non-condensed gaseous fraction is mixed with the source material after its compressing; the condensed liquid fraction is fed to the debutanizing column. Gas received from the top of the absorber is washed out, dried, cooled and fed to a deethanizing column. The column gas fraction is condensed. The obtained non-condensed fraction is cooled and fed the head section of the second absorber. The condensed liquid fraction is returned to the deethanizing column. The apparatus comprises a compressor, absorbers, debutanizing and deethanizing columns, all connected by a heat exchange and cooling system. EFFECT: increased efficiency of the process. 8 cl, 2 dwg
