苯乙烯装置脱氢尾气吸收工艺的研究  

Study on Absorption Process of Dehydrogenation Vent Gas from Styrene Unit

作　　者：邵百祥[1] 言敏达[1] 毛连生[1] 

机构地区：[1]中国石化集团上海石油化工研究院,上海201208

出　　处：《石油化工》2003年第7期593-595,共3页Petrochemical Technology

摘　　要：研究了苯乙烯装置脱氢尾气中芳烃回收工艺。研究结果表明,对于用多乙苯残油作为吸收剂的脱氢尾气吸收工艺,在较低的吸收剂温度下,吸收塔的操作压力和液气比对芳烃回收率影响不明显;在较高的吸收剂温度下,吸收塔的操作压力和液气比对芳烃回收率的影响比较明显;在一定的吸收压力和液气比下,吸收剂温度对芳烃回收率的影响在高温段影响明显,在低温段影响平缓。适宜的脱氢尾气吸收工艺:在吸收塔顶操作压力为43kPa时,吸收剂温度为10～20℃,液气质量比为4 0～5 5。Recovery process of aromatic hydrocarbons from dehydrogenation vent gas of styrene units was studied.In absorption process polyethylbenzene residual oil was used as absorbent.At lower absorption temperatures,variation of operation pressure and liquid-gas mass ratio in absorption column did not significantly affect the recovery of aromatic hydrocarbons;but at higher absorption temperatures,the influence was remarkable.For certain absorption pressure and liquid-gas mass ratio,amount of recovered aromatic hydrocarbons increased along with decrease of absorption temperature.Optimal absorption conditions of dehydrogenation vent gas were suggested.

关 键 词：苯乙烯 脱氢尾气 吸收 解吸 芳烃 

分 类 号：TQ226.6[化学工程—有机化工]