摘要
针对降低车用汽油中苯含量的问题,分析了苯的来源,指出催化重整装置重整生成油中的苯是汽油中苯的主要来源。对降低重整生成油中苯含量的技术途径进行了探讨,指出选择适合的重整操作方案、预分馏脱除重整原料中的苯以及苯的前驱体、从重整生成油中脱除苯是降低苯的主要途径。对预分馏馏分以及重整生成油中苯的后加工技术进行探讨,并对5种降低苯含量的技术进行对比。不同的技术方案对产物的收率影响较大,企业可以根据各自的具体情况进行选择。
Based on analyzing the benzene content of blending components in gasoline pool,it is concluded that reformate is the key benzene source of gasoline. Technologic approaches for reducing benzene content of reformate are reviewed. It is proposed that selecting the optimum catalytic reformer modes and operation conditions, adopting pre-fractionation to remove benzene and benzene precursors from feed and removing benzene from reformate are the three main approaches to reduce benzene content. Discussions of pre-fractionation and post processing of reformate are conducted in detail including the utilization of light naphtha,isomerazation,benzene saturation, benzene extraction and benzene alkylation. Finally, five processing schemes for reducing the benzene content of reformate from conventional naphtha feed are compared and put forward for refineries to select according to their own requirements.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2009年第9期1-7,共7页
Petroleum Processing and Petrochemicals
关键词
汽油
苯
催化重整
异构化
改质
gasoline
benzene
catalytic reforming
isomerization
upgrading
