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1. 发明申请

WO2008063325A3 PROCESS FOR BENZENE REDUCTION AND SULFUR REMOVAL FROM FCC NAPHTHAS 审中-公开
标题翻译：苯并呋喃降解和硫化氢去除方法
公开(公告)号：WO2008063325A3
公开(公告)日：2008-07-17
申请号：PCT/US2007022030
申请日：2007-10-16
申请人： EXXONMOBIL RES & ENG CO , UMANSKY BENJAMIN S , STANLEY JAMES F , MELLI TOMAS R , SMYTH SEAN C , ROUNDTREE EUGENE M
发明人： UMANSKY BENJAMIN S , STANLEY JAMES F , MELLI TOMAS R , SMYTH SEAN C , ROUNDTREE EUGENE M
IPC分类号： C10G61/00
CPC分类号： C10G29/205 , B01J29/40 , B01J29/70 , B01J29/90 , B01J2229/42 , C10G21/00 , C10G27/00 , C10G45/12 , C10G61/10 , Y02P20/52
摘要： A process for the removal of sulfur compounds and benzene of a catalytically cracked petroleum naphtha comprising benzene, organic sulfur compounds and olefins, by fractionating the cracked naphtha into a relatively low boiling range, olefinic, light catalytic naphtha (LCN) and an olefinic heavy catalytic naphtha (HCN) which boils above the range of the LCN the boiling ranges of the LCN and the HCN being defined by a cut point selected to maintain most of the benzene in the cracked naphtha in the LCN together with olefins in the boiling range of the LCN. The LCN is subjected to an optional non-hydrogenative desulfurization step followed by a fixed bed alkylation step in which the benzene in the LCN is alkylated with the olefins contained in this fraction. The HCN is treated by a similar an alkylation step using the olefins contained in this fraction to alkylate the sulfur compounds, forming alkylated products which boil above the gasoline boiling range. The LCN and HCN are then fractionated to remove light ends and higher boiling sulfur reaction products (disulfides, alkylated thiophenes) boiling above the gasoline boiling range.
摘要翻译：烯烃，轻质催化石脑油（LCN）和烯烃重催化作用，通过将裂解石脑油分馏成相对低沸点的方法，除去含有苯，有机硫化合物和烯烃的催化裂化石脑油的硫化合物和苯的方法石脑油（HCN）沸点高于LCN的范围，LCN和HCN的沸点范围由选择为将LCN中的裂解石脑油中的大部分苯保持在沸点范围内的烯烃所限定的切割点 LCN。对LCN进行任选的非氢化脱硫步骤，然后进行固定床烷基化步骤，其中LCN中的苯用该馏分中所含的烯烃烷基化。通过类似的烷基化步骤处理HCN，使用该级分中所含的烯烃烷基化硫化合物，形成沸点高于汽油沸程的烷基化产物。然后将LCN和HCN分馏以除去沸点高于汽油沸程的轻馏分和较高沸点硫反应产物（二硫化物，烷基化噻吩）。

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