| 摘要 |
FIELD: petrochemical processes. ^ SUBSTANCE: components C3+ undergo partial condensation and isolated in at least one vapor-liquid separation zone to produce liquid-phase stream containing C3- and C4-hydrocarbons and aromatic hydrocarbons and gas-phase stream containing hydrogen, methane, ethane, and C3+-hydrocarbons. Piqued-phase stream is treated to isolate C4--hydrogenation-dehydrogenation hydrocarbons and concentrate of aromatic hydrocarbons C6+. In order to isolate aromatic hydrocarbons from resulting vapor-phase stream, the latter is brought into contact with adsorbent under conditions favoring adsorption of at least a part of aromatic hydrocarbons, while aromatic hydrocarbon-depleted vapor-phase stream is obtained. Regeneration of aromatic hydrocarbon-charged adsorbent is accomplished with flushing gas at elevated temperature, said flushing gas being part of aromatic hydrocarbon-depleted vapor-phase stream while aromatic hydrocarbons trapped by flushing gas are condensed therefrom in vapor-liquid separation stage. ^ EFFECT: facilitated separation of products. ^ 1 dwg, 2 tbl |
