| 摘要 |
FIELD: organic chemistry, in particular method for adsorptive separation to produce raw materials for ethylene production. ^ SUBSTANCE: raw materials containing C5-C9-hydrocarbons including C5-C9-n-paraffin are fed in the first fractionation region to separate thereof into the first C5-paraffin-enriched processing stream and the second processing stream containing C6-C9-hydrocarbons. The second stream is fed in adsorption section of adsorptive separation region, wherein n-paraffin are selectively retained on adsorbent to produce raffinate stream containing branched C6-C9-hydrocarbons and C5-paraffin. The first stream as at least part of desorption agent is fed into desorption section of adsorptive separation region, wherein n-paraffin are eluated from adsorbent to produce extract stream containing C6-C9-n-paraffins. At least part of raffinate stream is separated in raffinate fractionation region into the first raffinate fraction containing C5-paraffin and the second raffinate fraction containing branched C6-C9-hydrocarbons. At least part of extract stream is fed into thermal decomposition region for ethylene production. ^ EFFECT: method with increased yield of ethylene and raw materials for catalytic reforming. ^ 1 dwg, 9 cl |
