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1. 发明授权

US5045175A Separation system for C.sub.4 hydrotreater effluent having reduced hydrocarbon loss 失效
标题翻译：具有降低碳氢化合物损失的C4加氢处理器流出物的分离系统
公开(公告)号：US5045175A
公开(公告)日：1991-09-03
申请号：US600790
申请日：1990-10-22
申请人： Robert S. Haizmann , Andrew S. Zarchy , Martin F. Symoniak
发明人： Robert S. Haizmann , Andrew S. Zarchy , Martin F. Symoniak
IPC分类号： C10G67/06
CPC分类号： C10G67/06
摘要： A hydrotreating process uses a separation section that reduces the loss of C.sub.4 and higher hydrocarbons through the use of a low hydrogen to hydrocarbon ratio in the reactor and the adsorptive removal of a majority of hydrogen sulfide from a liquid phase hydrotreater effluent. Sulfurous hydrocarbon feed is admixed with hydrogen to maintain a hydrogen to hydrocarbon ratio of less than 50 SCFB. The hydrogen and hydrocarbons are passed through a hydrotreater reactor to convert sulfur compounds to H.sub.2 S. The hydrotreater effluent is cooled and after flashing of any excess hydrogen or light ends the cooled effluent is contacted with an adsorbent material for the removal of H.sub.2 S. A hydrotreated hydrocarbon product is withdrawn from the adsorption section. The low hydrogen to hydrocarbon ratio permits the process to be used without the recycle of hydrogen thereby eliminating the need for separators and compressors that were formly used to recycle hydrogen to the hydrotreater. The elimination of the recycle and the low hydrogen to hydrocarbon ratio simplifies the flowscheme which can use a simple separator to flash light ends, hydrogen and some H.sub.2 S from the hydrotreater effluent. This process thus eliminates the need for a stripping section that was formerly needed to remove light ends and hydrogen sulfide from the hydrotreated product. The adsorptive removal of the H.sub.2 S and the limited venting of hydrogen allows essentially all of the hydrotreated product to be preserved. In most flowschemes H.sub.2 S removal can be carried out in the adsorbers that are usually present for drying of the hydrotreated feed.
摘要翻译：加氢处理方法使用分离段，其通过在反应器中使用低的氢烃比例降低C4和高级烃的损失，并从液相加氢处理器流出物中吸附除去大部分硫化氢。亚硫酸烃进料与氢气混合以保持氢与烃的比例小于50SCFB。氢气和烃通过加氢处理反应器将硫化合物转化为H 2 S。加氢处理器流出物被冷却并且在闪蒸过量的氢气或轻馏分之后，冷却的流出物与用于除去H 2 S的吸附材料接触。加氢处理的烃产物从吸附段中排出。低氢烃比可以使得该方法不用氢再循环使用，从而消除了对正式用于将氢循环到加氢处理塔中的分离器和压缩机的需要。循环利用和低氢烃比的消除简化了可以使用简单分离器从加氢处理器流出物中闪蒸轻馏分，氢气和一些H 2 S的流程。因此，该方法不需要先前需要从加氢处理的产物中除去轻馏分和硫化氢的汽提部分。 H2S的吸附去除和氢的有限排放允许基本上所有的加氢处理产物被保存。在大多数流程中，可以在通常用于干燥加氢处理的进料的吸附器中进行H 2 S的去除。

2. 发明授权

US4980046A Separation system for hydrotreater effluent having reduced hydrocarbon loss 失效
标题翻译：加氢处理废水分离系统减少了碳氢化合物的流失
公开(公告)号：US4980046A
公开(公告)日：1990-12-25
申请号：US458267
申请日：1989-12-28
申请人： Andrew S. Zarchy , Martin F. Symoniak , Robert S. Haizmann
发明人： Andrew S. Zarchy , Martin F. Symoniak , Robert S. Haizmann
IPC分类号： C10G67/06
CPC分类号： C10G67/06
摘要： A hydrotreating process uses a separation section that reduces the loss of C.sub.5 and higher hydrocarbons through the use of a low hydrogen to hydrocarbon ratio in the reactor and the adsorptive removal of a majority of hydrogen sulfide from a liquid phase hydrotreater effluent. Sulfurous hydrocarbon feed is admixed with hydrogen to maintain a hydrogen to hydrocarbon ratio of less than 50 SCFB. The hydrogen and hydrocarbons are passed through a hydrotreater reactor to convert sulfur compounds to H.sub.2 S. The hydrotreater effluent is cooled and after flashing of any excess hydrogen or light ends the cooled effluent is contacted with an adsorbent material for the removal of H.sub.2 S. A hydrotreated hydrocarbon product is withdrawn from the adsorption section. The low hydrogen to hydrocarbon ratio permits the process to be used without the recycle of hydrogen thereby eliminating the need for separators and compressors that were formerly used to recycle hydrogen to the hydrotreater. The elimination of the recycle and the low hydrogen to hydrocarbon ratio simplifies the flowscheme which can use a simple separator to flash light ends, hydrogen and some H.sub.2 S from the hydrotreater effluent. This process thus eliminates the need for a stripping section that was formerly needed to remove light ends and hydrogen sulfide from the hydrotreated product. The adsorptive removal of the H.sub.2 S and the limited venting of hydrogen allows essentially all of the hydrotreated product to be preserved. In most flowschemes H.sub.2 S removal can be carried out in the absorbers that are usually present for drying of the hydrotreated feed.
摘要翻译：加氢处理方法使用分离段，其通过在反应器中使用低的氢烃比例和从液相加氢处理器流出物吸附除去大部分硫化氢来减少C5和高级烃的损失。亚硫酸烃进料与氢气混合以保持氢与烃的比例小于50SCFB。氢气和烃通过加氢处理反应器将硫化合物转化为H 2 S。加氢处理器流出物被冷却并且在闪蒸过量的氢气或轻馏分之后，冷却的流出物与用于除去H 2 S的吸附材料接触。加氢处理的烃产物从吸附段中排出。低氢烃比可以使氢过程不用再循环使用，从而消除了以前用于将氢循环到加氢处理塔中的分离器和压缩机的需要。循环利用和低氢烃比的消除简化了可以使用简单分离器从加氢处理器流出物中闪蒸轻馏分，氢气和一些H 2 S的流程。因此，该方法不需要先前需要从加氢处理的产物中除去轻馏分和硫化氢的汽提部分。 H2S的吸附去除和氢的有限排放允许基本上所有的加氢处理产物被保存。在大多数流变学中，可以在通常用于干燥加氢处理的进料的吸收器中进行H 2 S的去除。

3. 发明授权

US5245102A Isomerization with distillation and PSA recycle streams 失效
标题翻译：与蒸馏和PSA循环流异构化
公开(公告)号：US5245102A
公开(公告)日：1993-09-14
申请号：US929237
申请日：1992-08-14
申请人： Andrew S. Zarchy , Martin F. Symoniak
发明人： Andrew S. Zarchy , Martin F. Symoniak
IPC分类号： C07C9/16 , C10G45/58 , C10G67/06 , C07L5/13
CPC分类号： C10G67/06 , C07C9/16 , C10G45/58
摘要： An isomerization zone process is disclosed that combines a deisohexanizer with a PSA separation section to provide a product stream comprising methylbutane and dimethylbutane. The process combines a methylpentane and normal hexane recycle stream, a normal pentane recycle stream and a fresh feedstream to provide a combined feedstream that is charged to an isomerization zone. The effluent from the isomerization zone is stabilized and passed to a deisohexanizer. A sidecut stream carries the methylpentane and normal hexane recycle stream from the deisohexanizer. Hydrocarbons having a higher boiling point than the sidecut stream are withdrawn as a bottoms stream from the deisohexanizer. An overhead carries normal pentane, methylbutane and dimethylbutanes to the PSA separation section. An extract stream is recovered as the normal pentane recycle stream. The raffinate from the PSA provides a high octane isomerate stream comprising mainly methylpentane and dimethylbutanes.
摘要翻译：公开了一种异构化方法，其将脱脂剂与PSA分离部分结合，以提供包含甲基丁烷和二甲基丁烷的产物流。该方法结合了甲基戊烷和正常的己烷再循环料流，正常戊烷再循环料流和新鲜进料流，以提供装入异构化区的组合进料流。来自异构化区域的流出物被稳定并通入脱乙酸酯。旁路流从脱甲基化器中携带甲基戊烷和正常己烷再循环物流。具有比单侧流高的沸点的碳氢化合物作为底部物流从脱乙酸酯中排出。塔顶将普通戊烷，甲基丁烷和二甲基丁烷加入PSA分离段。回收提取物流作为正戊烷再循环流。来自PSA的萃余液提供主要包含甲基戊烷和二甲基丁烷的高辛烷异构体流。

4. 发明授权

US5146037A Isomerization with distillation and PSA recycle streams 失效
标题翻译：与蒸馏和PSA循环流异构化
公开(公告)号：US5146037A
公开(公告)日：1992-09-08
申请号：US619556
申请日：1990-11-29
申请人： Andrew S. Zarchy , Martin F. Symoniak
发明人： Andrew S. Zarchy , Martin F. Symoniak
IPC分类号： C07C9/16 , C10G45/58 , C10G67/06
CPC分类号： C10G45/58 , C07C9/16 , C10G67/06
摘要： An isomerization zone process is disclosed that combines a deisohexanizer with a PSA separation section to provide a product stream comprising methylbutane and dimethylbutane. The process combines a methylpentane and normal hexane recycle stream, a normal pentane recycle stream and a fresh feedstream to provide a combined feedstream that is charged to an isomerization zone. The effluent from the isomerization zone is stabilized and passed to a deisohexanizer. A sidecut stream carries the methylpentane and normal hexane recycle stream from the deisohexanizer. Hydrocarbons having a higher boiling point than the sidecut stream are withdrawn as a bottoms stream from the deisohexanizer. An overhead carries normal pentane, methylbutane and dimethylbutanes to the PSA separation section. An extract stream is recovered as the normal pentane recycle stream. The raffinate from the PSA provides a high octane isomerate stream comprising mainly methylpentane and dimethylbutanes.

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