METHOD FOR SEPARATING A HYDROCARBON MIXTURE CONTAI

专利名称：METHOD FOR SEPARATING A

HYDROCARBON MIXTURE CONTAININGHYDROGEN, SEPARATING DEVICE, ANDOLEFIN PLANT

发明人：Helmut Fritz,Torben Höfel申请号：US15109960申请日：20141217

公开号：US2016034A1公开日：20161201

摘要：A method for separating a hydrogen-containing hydrocarbon mixture (C2minus),which in addition to the hydrogen essentially contains hydrocarbons with two carbonatoms and methane, using a distillation column (). Fluid (a, c, e) of the hydrocarbonmixture (C2minus) is cooled stepwise at a first pressure level, during which time firstcondensates (b, d) are separated from the fluid (a, c, e). Fluid (e) from the hydrocarbonmixture (C2minus) which remains gaseous after this is fed at the first pressure level into aC2 absorber (), to which a liquid reflux (r) is added at the top, while a second condensate(f) is drawn off from the sump of the C2 absorber () and a gaseous top stream (g)containing predominantly methane and hydrogen is drawn off at the top of the C2absorber (). Fluid of the above-mentioned gaseous top stream (g) from the top of the C2absorber () is cooled to a third temperature level and transferred at the first pressurelevel into a hydrogen separator () in which a methane-rich third condensate (i) isseparated from the fluid of the gaseous top stream (g), leaving behind a gaseous,hydrogen-rich stream (h). Fluid of the first condensates (b, d) and fluid of the second

condensate (f) is depressurized from the first pressure level to a second pressure levelbelow the first pressure level and fed into the distillation column () which is operated atthe second pressure level. Fluid (e) of the third condensate (i) which is separated in thehydrogen separator () from the fluid of the gaseous top stream (g) from the top of theC2 absorber is used as the reflux (r) added at the top of the C2 absorber () andtransferred from the hydrogen separator to the C2 absorber solely by gravity. Theinvention also relates to a corresponding separating unit and a corresponding olefinapparatus.

申请人：LINDE AKTIENGESELLSCHAFT

地址：München DE

国籍：DE

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