发明名称 Method and installation for fractionating gas derived from pyrolysis of hydrocarbons
摘要 The invention relates to a method for fractionating a gas produced by the pyrolysis of hydrocarbons ( 1 ) for the recovery of C<SUB>2 </SUB>and higher hydrocarbons, in particular ethylene and ethane, comprising an operation ( 70 ) for compressing and drying gas ( 1 ) as a result of it passing into a series of compressors ( 3, 10, 17, 24, 36 ), an operation ( 80 ) for progressively cooling and partially liquefying the gas produced by compression and drying operation ( 70 ) as a result of it successively passing into a cryogenic exchanger ( 62 ), and a distillation operation ( 90 ) in a column ( 64 ), and the corresponding installation. According to the invention, cryogenic exchanger ( 62 ) is cooled by at least one cooling liquid ( 400 ) which is liquid natural gas (LNG).
申请公布号 US7185514(B2) 申请公布日期 2007.03.06
申请号 US20040487655 申请日期 2004.03.15
申请人 TECHNIP FRANCE 发明人 PARADOWSKI HENRI
分类号 F25J3/00;F25J3/02;F25J3/06 主分类号 F25J3/00
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