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1. 发明授权

US5043525A Paraffin isomerization and liquid phase adsorptive product separation 失效
标题翻译：石蜡异构化和液相吸附产物分离
公开(公告)号：US5043525A
公开(公告)日：1991-08-27
申请号：US560655
申请日：1990-07-30
申请人： Robert S. Haizmann , Frederick M. Hibbs , Srikantiah Raghuram
发明人： Robert S. Haizmann , Frederick M. Hibbs , Srikantiah Raghuram
IPC分类号： C10G61/06 , C10G67/06 , C10L1/06
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 A bottoms stream comprising C.sub.7 and higher boiling hydrocarbons is withdrawn from the bottom of the deisohexanizer column.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。

2. 发明授权

US4747933A Isomerization unit with integrated feed and product separation facilities 失效
标题翻译：具有综合进料和分离设备的异构化单元
公开(公告)号：US4747933A
公开(公告)日：1988-05-31
申请号：US30806
申请日：1987-03-27
申请人： Frederick M. Hibbs
发明人： Frederick M. Hibbs
IPC分类号： C10G35/04 , C10G45/58 , C10G59/00 , C10G59/06 , C10G69/00 , C10G69/14 , C10L1/06 , C10G51/06
CPC分类号： C10L1/06 , C10G35/04 , C10G45/58 , C10G59/06 , C10G69/14
摘要： A combination isomerization-reforming process provides additional liquid volume yields of gasoline without significant increase in utilities expense by recycling the isomerization zone effluent to an extended feed fractionation zone from which an isomerization product is also withdrawn. The feed fractionation zone receives a C.sub.5 -plus boiling range naphtha feed. The fractionation zone provides a relatively heavy bottoms stream for a reformer feed and a relatively lighter sidecut stream for feed to an isomerization zone. Effluent from the isomerization zone is recycled to the feed fractionation zone at a midfractionation entry point. A net overhead stream withdrawn from the feed fractionation zone and containing principally C.sub.6 isoparaffins and lighter boiling hydrocarbons provides a relatively high octane blending component. The fractionation zone overhead stream may be combined with effluent from the reforming zone to obtain a gasoline product, at high liquid volume yield, having sufficient octane for unleaded motor fuel use.

3. 发明授权

US06759563B1 Liquid phase adsorptive separation with hexane desorbent and paraffin isomerization 失效
标题翻译：用己烷解吸剂和石蜡异构化进行液相吸附分离
公开(公告)号：US06759563B1
公开(公告)日：2004-07-06
申请号：US09973334
申请日：2001-10-09
申请人： Frederick M. Hibbs
发明人： Frederick M. Hibbs
IPC分类号： C07C522
CPC分类号： C07C5/2791 , C07C7/13 , C07C2523/42 , C07C9/16
摘要： A combination isomerization and liquid phase adsorptive separation process has been developed. In this arrangement, a C5+ naphtha stream is split into a heavy hydrocarbon stream comprising normal heptane and higher boiling hydrocarbons, an isomerization and adsorption zone feed stream comprising pentanes and lower boiling hydrocarbons, and a desorbent stream containing hexanes. The isomerization and adsorption zone feed stream is combined with an isomerization section effluent to form a combined feed to an adsorptive separation section. In the adsorption separation section, normal pentanes are selectively adsorbed on an adsorbent material, and a raffinate stream comprising hexanes and isoparaffins is recovered and passed to a deisohexanizer column. A desorbent stream containing normal hexane is recovered as a sidecut from the deisohexanizer column and is combined with the desorbent stream containing the hexanes from the naphtha splitter to supply the desorbent for the adsorptive separation section. The extract stream that is recovered from the adsorptive separation section is passed to the isomerization section. A bottoms stream comprising C7 and higher boiling hydrocarbons is withdrawn from the bottom of the deisohexanizer column. A high-octane isomerate is taken overhead from the deisohexanizer column as a product stream.
摘要翻译：已经开发了组合异构化和液相吸附分离过程。在这种布置中，将C5 +石脑油流分成包含正庚烷和较高沸点烃的重质烃流，包含戊烷和低沸点烃的异构化和吸附区进料流，以及含有己烷的解吸流。将异构化和吸附区进料流与异构化段流出物混合以形成吸附分离段的组合进料。在吸附分离部分中，常规的戊烷被选择性地吸附在吸附剂材料上，并且回收包含己烷和异链烷烃的萃余液流并通入脱乙烷塔。含有正己烷的解吸剂流从脱乙烷塔中回收，并与含有来自石脑油分离器的己烷的解吸剂流合并，供应用于吸附分离段的脱附剂。将从吸附分离部回收的萃取物流送入异构化部。包含C7和更高沸点烃的底部物流从脱乙酸塔的底部排出。将高辛烷异构体作为产物流从脱乙酸酯塔塔顶馏去。

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