-
公开(公告)号：US5107052A
公开(公告)日：1992-04-21
申请号：US636646
申请日：1990-12-31
CPC分类号： C10G61/06 , C07C5/2767 , C07C7/13 , C07C9/00 , C10G25/03
摘要： The invention relates to the production of high octane fuels including a process for separating the high octane components for the gasoline pool from lower octane components, which are recycled to an isomerization reaction by adsorptively separating dimethyl paraffins from an isomerate with an aluminophosphate zeolite and SSZ-24, an all-silica zeolite adsorbent isostructural with AIPO.sub.4 -5, and a C.sub.6-10 normal paraffin desorbent. The lower octane components of the isomerate, normal paraffins and mono-branched paraffins, are recycled to the isomerization reaction zone for further conversion to multi-branched paraffins. The useful aluminophosphates are SAPO-5, AIPO.sub.4 -5 MgAPO-5 and MAPSO-5.
摘要翻译： 本发明涉及高辛烷值燃料的生产，包括通过用磷酸铝沸石和SSZ-沸石从异构体中吸附分离二甲基链烷烃而再循环到异构化反应中将汽油池的高辛烷值成分从低级辛烷成分中分离出来的方法， 24，与AIPO4-5同构结构的全硅沸石吸附剂和C6-10正常石蜡解吸剂。 异构体，正链烷烃和单支链烷烃的低辛烷值组分被再循环到异构化反应区，用于进一步转化为多支链链烷烃。 有用的磷酸铝是SAPO-5，AIPO4-5 MgAPO-5和MAPSO-5。
-
公开(公告)号：US5043525A
公开(公告)日：1991-08-27
申请号：US560655
申请日：1990-07-30
CPC分类号： C10L1/06 , C10G61/06 , C10G2400/02
摘要： A combination isomerization and liquid phase adsorptive separation process is given increased efficiency and cost effectiveness while also improving the product quality by eliminating the columns for the separation of desorbent material from extract and raffinate streams. In this arrangement a C.sub.5 + naphtha stream is split into a heavy hydrocarbon stream comprising normal hexane and higher boiling hydrocarbons and an isomerization zone feedstream comprising isohexane and lower boiling hydrocarbons. The heavy hydrocarbon stream goes directly to a deisohexanizer column. The isomerization zone feedstream is combined with an excess desorbent stream and the extract stream from an adsorptive separation section to form a combined feed. Hydrocarbons in the combined feed are isomerized and after stabilization pass directly into the adsorption section. In the adsorption section, normal pentanes are selectively adsorbed on an adsorbent material, and a raffinate stream comprising desorbent and isoparaffins is passed to the deisohexanizer column and supplies the desorbent for the adsorption section. Any desorbent in excess of that required for the adsorption section is combined with the isomerization zone feed. The extract stream that is combined with the isomerization zone feed is recovered from adsorption section. A bottoms stream comprising C.sub.7 and higher boiling hydrocarbons is withdrawn from the bottom of the deisohexanizer column. A high octane isomerate is taken overhead from the deisohexanizer as a product stream.
摘要翻译： 提供组合异构化和液相吸附分离方法提高了效率和成本效益，同时通过消除用于从萃取液和萃余液流中分离解吸剂材料的柱来提高产品质量。 在这种布置中，将C5 +石脑油流分解成包含正己烷和较高沸点烃的重质烃流以及包含异己烷和低沸点烃的异构化区进料流。 重质烃流直接进入脱乙烷塔。 异构化区进料流与过量的解吸剂流和来自吸附分离部分的萃取物流组合以形成组合进料。 合并的进料中的烃异构化，稳定后直接进入吸附段。 在吸附部分，常规的戊烷被选择性地吸附在吸附剂材料上，并且包含解吸剂和异链烷烃的萃余液流被送到脱乙烷塔中并提供用于吸附段的解吸剂。 超过吸附段所需的任何解吸剂与异构化区进料组合。 与异构化区进料结合的萃取物流从吸附段回收。 包含C7和更高沸点烃的底部物流从脱乙酸塔的底部排出。 作为产物流，从脱乙酸酯塔顶馏去高辛烷异构体。
-
搜索结果
12 条记录 (耗时 0.027 秒)
