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1. 发明申请

WO2014094105A1 SEPARATING STYRENE FROM C6 - C8 AROMATIC HYDROCARBONS 审中-公开
标题翻译：从C6-C8芳香烃分离苯乙烯
公开(公告)号：WO2014094105A1
公开(公告)日：2014-06-26
申请号：PCT/CA2012/001175
申请日：2012-12-20
申请人： WU, Kuang-Yeu , LEE, Adam T. , CHUANG, Karl Tze-Tang , SHEN, Hung-Chung , LIN, Tzong-Bin
发明人： WU, Kuang-Yeu , LEE, Adam T. , CHUANG, Karl Tze-Tang , SHEN, Hung-Chung , LIN, Tzong-Bin
IPC分类号： C07C7/148 , C07C41/06 , C07C41/42 , C07C43/164
CPC分类号： C07C41/42 , C07C7/14891 , C07C7/163 , C07C41/06 , C10G29/205 , C10G69/123 , C10G2400/02 , C10G2400/30 , C07C43/164 , C07C15/08
摘要： The invention disclosed relates to a process for refining a hydrocarbon feed to make substantially styrene-free C6-C8 aromatic hydrocarbons (BTX). The hydrocarbon feed, for example, unhydrotreated pyrolysis gasoline, is distilled to make a BTX rich stream containing styrene which is fractionated to separate C6 and C7 hydrocarbons from C8 hydrocarbons including styrene. Styrene in the C8 hydrocarbons reacts in the presence of a selective etherification catalyst with a C1-C3 lower alkyl alcohol to form the corresponding styrene ether, which is then separated by distillation into a styrene ether stream and a C8 hydrocarbons rich stream. The C8 hydrocarbons rich stream is then re-mixed with the C6 and C7 hydrocarbons, and sent to hydrogenation reactors to remove sulphur and olefinic hydrocarbons to form substantially styrene-free BTX.
摘要翻译：所公开的本发明涉及一种用于精炼烃进料以制备基本上无苯乙烯的C 6 -C 8芳族烃（BTX）的方法。将烃进料例如未加氢处理的裂解汽油蒸馏以制备含有苯乙烯的BTX富流，其分馏以从C 8烃（包括苯乙烯）中分离C6和C7烃。 C8烃中的苯乙烯在选择性醚化催化剂存在下与C1-C3低级烷基醇反应形成相应的苯乙烯醚，然后通过蒸馏将其分离成苯乙烯醚流和富含C8烃的物流。然后将富含C8烃的物流与C6和C7烃重新混合，并送至氢化反应器以除去硫和烯烃，以形成基本上无苯乙烯的BTX。

2. 发明申请

WO2009126127A1 NOVEL ENERGY EFFICIENT AND THROUGHPUT ENHANCING EXTRACTIVE PROCESS FOR AROMATICS RECOVERY 审中-公开
标题翻译：新能源有效和刺激性增强提取方法进行AROMATICS恢复
公开(公告)号：WO2009126127A1
公开(公告)日：2009-10-15
申请号：PCT/US2008/008385
申请日：2008-07-08
申请人： CPC CORPORATION, TAIWAN , AMT INTERNATIONAL, INC. , LEE, Fu-Ming , HWANG, Jyh-Haur , LIN, Tzong-Bin , SHEN, Hung-Chung , WU, Kuang-Yeu , CHIU, Tsung-Min , CHEN, Zong-Ying , KUO, Tung-Hsiung , WU, Yu-Ming
发明人： LEE, Fu-Ming , HWANG, Jyh-Haur , LIN, Tzong-Bin , SHEN, Hung-Chung , WU, Kuang-Yeu , CHIU, Tsung-Min , CHEN, Zong-Ying , KUO, Tung-Hsiung , WU, Yu-Ming
IPC分类号： C10G21/28 , C07C7/10
CPC分类号： C10G21/06 , C10G21/28 , C10G2300/4056
摘要： An energy efficient, high throughput process for aromatics recovery can be readily implemented by revamping existing sulfolane solvent extraction facilities, or constructing new ones, so as to incorporate unique process operations involving liquid- liquid extraction and extractive distillation. Current industrial sulfolane solvent based liquid-liquid extraction processes employ a liquid-liquid extraction column, an extractive stripping column, a solvent recovery column, a raffinate wash column, and a solvent regenerator. The improved process for aromatic hydrocarbon recovery from a mixture of aromatic and non-aromatic hydrocarbons requires transformation of the extractive stripping column into a modified extractive distillation column. The revamping incorporates the unique advantages of liquid-liquid extraction and extractive distillation into one process to significantly reduce energy consumption and increase process throughput. The revamp entails essentially only piping changes and minor equipment adjustments of the original liquid-liquid extraction facility, and is therefore, reversible.
摘要翻译：通过改进现有的环丁砜溶剂萃取设备或构建新的环丁砜溶剂萃取设备，可以容易地实现能量高效，高通量的芳烃回收方法，从而结合独特的液 - 液萃取和萃取蒸馏工艺操作。当前工业环丁砜溶剂型液 - 液萃取方法采用液 - 液萃取柱，萃取汽提塔，溶剂回收塔，萃余液洗涤塔和溶剂再生器。从芳烃和非芳烃的混合物中回收芳烃的改进方法需要将萃取汽提塔转化为改良的萃取蒸馏塔。改造将液 - 液萃取和萃取蒸馏的独特优势融入到一个过程中，以显着降低能耗并提高生产能力。改造只需要对原液 - 液萃取设备进行管道更换和小型设备调整，因此是可逆的。

3. 发明申请

WO2009023605A1 EXTRACTIVE DISTILLATION PROCESS FOR RECOVERING AROMATICS FROM PETROLEUM STREAMS 审中-公开
标题翻译：从石油回收回收芳烃的提取蒸馏工艺
公开(公告)号：WO2009023605A1
公开(公告)日：2009-02-19
申请号：PCT/US2008/072718
申请日：2008-08-08
申请人： AMT INTERNATIONAL, INC. , CPC CORPORATION, TAIWAN , WU, Kuang-yeu , CHIU, Tsung-min , LIN, Tzong-bin , SHEN, Hung-chung , WU, Yu-ming , KUO, Tung-hsiung
发明人： WU, Kuang-yeu , CHIU, Tsung-min , LIN, Tzong-bin , SHEN, Hung-chung , WU, Yu-ming , KUO, Tung-hsiung
IPC分类号： C10G21/00
CPC分类号： B01D3/40 , C10G7/08
摘要： The present invention relates to a process for recovering polar hydrocarbons from non-polar hydrocarbons, such as aromatics from non-aromatics, naphthenes from paraffins and isoparaffins, or olefins from paraffins and isoparaffins, in feed mixtures containing at least a measurable amount of heavier hydrocarbons. According to the invention, an improved extractive distillation (ED) process is disclosed for recovering aromatic hydrocarbons including benzene, toluene, and xylenes (BTX aromatics) from the C 6 -C 8 petroleum streams containing at least a measurable amount Of C 9 + hydrocarbons. The invention also relates to an improved ED process for recovering mainly benzene and toluene from the C 6- C 7 petroleum streams containing at least a measurable amount of C 8 + hydrocarbons. This invention is further directed toward the regeneration and recovery of the ED solvent utilized to recover and purify the aromatic hydrocarbons from the petroleum stream containing at least a measurable amount of hydrocarbons heavier than intend feedstock.
摘要翻译：本发明涉及一种从非极性烃中回收极性烃的方法，例如来自非芳族化合物的芳族化合物，来自烷烃和异链烷烃的环烷烃，或来自链烷烃和异链烷烃的烯烃在含有至少可测量量的较重烃。根据本发明，公开了一种改进的萃取蒸馏（ED）方法，用于从含有至少可测量量的C 9+烃的C 6 -C 8石油流中回收包括苯，甲苯和二甲苯（BTX芳族化合物）的芳烃。本发明还涉及一种改进的ED方法，主要从含有至少可测量量的C8 +烃的C6-C7石油流中回收苯和甲苯。本发明进一步涉及用于回收和纯化来自含有至少可测量量的比目标原料重的烃的石油流中的芳烃的ED溶剂的再生和回收。

4. 发明申请

WO2008021917A2 THREE PHASE EXTRACTIVE DISTILLATION WITH MULTIPLE COLUMNS CONNECTED IN SERIES 审中-公开
标题翻译：系列中连接多个柱的三相萃取蒸馏
公开(公告)号：WO2008021917A2
公开(公告)日：2008-02-21
申请号：PCT/US2007/075530
申请日：2007-08-08
申请人： AMT INTERNATIONAL, INC. , WU, Kuang-Yeu , LEE, Adam, T. , LIN, Tzong-Bin , SHEN, Hung-Chung
发明人： WU, Kuang-Yeu , LEE, Adam, T. , LIN, Tzong-Bin , SHEN, Hung-Chung
IPC分类号： B01D3/14
CPC分类号： B01D3/143
摘要： A novel method for connecting multiple existing columns which are retrofitted into vapor-liquid contacting devices with trays or packings suitable for the operation of a three-phase (vapor-liquid-liquid) extractive distillation column for aromatics recovery. The retrofitted columns are connected by a vapor transfer line to transfer the vapor phase from the top of the lower column to the bottom of the upper column, and by a liquid transfer line to transfer the liquid phase from the bottom of the upper column to the top of the lower column of the three-phase extractive distillation column. One improvement is the feeding of the ascending vapor from the top of the lower column to below the liquid level in the bottom of the upper column as the aeration/mixing driving force and/or in combination of the installation of a jet mixer to prevent phase separation, which is deemed to occur at the bottom of the upper column, wherein a bulk quantity of liquid is maintained without mixing in order to provide the hydraulic head for the bottom liquid transfer pump. The jet mixer, if installed, uses the bottom liquid from the upper column or the extractive solvent feed as the jetting liquid to provide the necessary mixing to homogenize and disperse the two liquid phases in the bottom of the upper column. Experimental data is disclosed for verifying the existence of two liquid phases in the three-phase extractive distillation column.
摘要翻译：一种用于连接多个现有柱的新方法，其被改装成气 - 液接触装置，其中适用于操作用于芳烃回收的三相（气 - 液 - 液）萃取蒸馏塔的塔板或填料。改进的柱通过蒸气传输管线连接，以将气相从下部塔顶部传递到上部塔底部，并通过液体输送管线将液相从上部塔底部转移到三相萃取蒸馏塔下塔顶部。一个改进是将上升的蒸汽从上部塔顶部输送到上部塔底部的液位以作为通气/混合驱动力和/或组合喷射混合器的装置以防止相位分离，其被认为发生在上柱的底部，其中保持大量的液体而不混合，以便为底部液体输送泵提供液压头。喷射混合器如果安装，则使用来自上塔的底部液体或萃取溶剂进料作为喷射液体，以提供必要的混合，以使两相液相在上塔底部均匀化并分散。公开了用于验证三相萃取蒸馏塔中两个液相的存在的实验数据。

5. 发明申请

WO2007005298A3 PROCESS FOR PRODUCING PETROLEUM OILS WITH ULTRA-LOW NITROGEN CONTENT 审中-公开
标题翻译：用于生产具有超低氮含量的石油油的方法
公开(公告)号：WO2007005298A3
公开(公告)日：2007-02-22
申请号：PCT/US2006024192
申请日：2006-06-21
申请人： CHINESE PETROLEUM CORP , AMT INT INC , LIN TZONG-BING , SHEN HUNG-CHUNG , WU KUANG-YEU
发明人： LIN TZONG-BING , SHEN HUNG-CHUNG , WU KUANG-YEU
IPC分类号： C10G53/04 , C10G17/04 , C10G21/00
CPC分类号： C10G53/10 , C10G17/04 , C10G21/00 , C10G21/06 , C10G53/04 , C10G53/08 , C10G2300/104 , C10G2300/1044 , C10G2300/202 , C10G2300/301 , C10G2300/44 , C10G2300/805 , C10G2400/30
摘要： A highly effective liquid-liquid extraction process to remove nitrogen compounds and especially basic nitrogen compounds from aromatic light petroleum oils with excellent recovery employs de-ionized water, which can be acidified, as the extractive solvent. The product is an aromatic hydrocarbon with ultra-low amounts of nitrogen poisons that can deactivate acidic catalysts.The extracted oils are suitable feedstock for the subsequent catalytic processes that are promoted with the high performance solid catalysts, which are extremely sensitive to nitrogen poison.
摘要翻译：作为提取溶剂，可以将能够酸化的去离子水用于从优异回收的芳族轻质石油中除去氮化合物，特别是碱性氮化合物的高效液 - 液萃取方法。该产品是具有超低量氮氧化物的芳族烃，其可以使酸性催化剂失活。所提取的油是用于对氮毒素非常敏感的高性能固体催化剂促进的随后催化方法的合适原料。

6. 发明申请

WO2013095696A1 PROCESS FOR PRODUCING PROPYLENE OXIDE 审中-公开
标题翻译：生产丙烯氧化物的方法
公开(公告)号：WO2013095696A1
公开(公告)日：2013-06-27
申请号：PCT/US2012/033354
申请日：2012-04-12
申请人： CPC CORPORATION, TAIWAN , CHUANG, Karl, T. , DIRK-FAITAKIS, Christina , LIN, Tzong-Bin , SHEN, Hung-Chung
发明人： CHUANG, Karl, T. , DIRK-FAITAKIS, Christina , LIN, Tzong-Bin , SHEN, Hung-Chung
IPC分类号： C07D303/04
CPC分类号： C07D303/04 , Y02P20/127 , Y02P20/582
摘要： A continuous epoxidation process for the production of high purity propylene oxide by the reaction of propylene with an oxidant that is a per-acid, such as peracetic acid (PAA), in a reactive distillation (RD) column. The RD column provides excellent heat integration and temperature control, and the process has the advantage of lower investment cost for capital equipment. The process operates at mild temperarures and pressures. A ferric acetylacetonate homogeneous catalyst and/or stabilizer may be included as part of the PAA feed to the process to increase PAA conversion and selectivity to propylene oxide. A pre-reactor can be incorporated upsteam of the RD column to increase the residence time at lower temperatures to enhance productivity.
摘要翻译：在反应蒸馏（RD）柱中通过丙烯与过酸例如过乙酸（PAA）的氧化剂反应生产高纯度环氧丙烷的连续环氧化方法。 RD列提供优异的热集成和温度控制，该工艺具有降低资本设备投资成本的优点。该过程在温和的气氛和压力下运行。乙酰丙酮铁的均匀催化剂和/或稳定剂可以作为PAA进料的一部分被包括以提高PAA转化率和对环氧丙烷的选择性。可以将预反应器并入RD塔的上游，以增加在较低温度下的停留时间，以提高生产率。

7. 发明申请

WO2011049544A1 PROCESS AND APPARATUS FOR ONLINE REJUVENATION OF CONTAMINATED SULFOLANE SOLVENT 审中-公开
标题翻译：污染磺化溶剂在线重新使用的工艺和装置
公开(公告)号：WO2011049544A1
公开(公告)日：2011-04-28
申请号：PCT/US2009/005672
申请日：2009-10-19
申请人： CPC CORPORATION, TAIWAN , YEN, Ping-Wen , HO, Yuh-Sheve , CHIU, Hung-Tzu , HWU, Chung-Jong , CHANG, June-Cheng , LIN, Tzong-Bin , YAN, Tsoung, Y. , HONG, Cheng-Tsung , SHEN, Hung-Chung
发明人： YEN, Ping-Wen , HO, Yuh-Sheve , CHIU, Hung-Tzu , HWU, Chung-Jong , CHANG, June-Cheng , LIN, Tzong-Bin , YAN, Tsoung, Y. , HONG, Cheng-Tsung , SHEN, Hung-Chung
IPC分类号： B01D35/06 , B01D37/00
CPC分类号： C10G21/28 , B03C1/0332 , B03C1/284 , B03C1/286 , B03C2201/18 , B03C2201/20 , B03C2201/28 , C10G21/22 , C10G2300/44
摘要： A continuous online process for rejuvenating whole stream of contaminated lean sulfolane in an extraction system is provided. In particular, a rejuvenator is installed in the solvent circulation loop to remove the contaminants continuously to keep the solvent clean, effective and less corrosive. Specifically, the rejuvenator comprises a high pressure vessel with a removable cover and a round rack with vertical stainless steel tubes fitted in the high pressure vessel. A magnetic bar is placed in each stainless steel tube. A screen cylinder is installed inside the ring of stainless steel tubes. As the contaminated sulfolane is passed through the rejuvenator, the rejuvenator picks up its contaminants. The rejuvenator can be dissembled to remove the contaminants periodically. The rejuvenator is characterized by simple in construction, reliable in operation, and low in operation and maintenance costs. With this rejuvenator, the extraction system can be operated at high efficiency and high capacity without the dreaded corrosion.
摘要翻译：提供了一个连续的在线过程，用于在提取系统中恢复受污染的贫环烷砜的全流。特别地，在溶剂循环回路中安装一个振动器，以连续地去除污染物，以保持溶剂清洁，有效和较少的腐蚀性。具体来说，复原器包括具有可拆卸盖的高压容器和安装在高压容器中的垂直不锈钢管的圆形架。在每个不锈钢管中放置一个磁棒。丝网筒安装在不锈钢管的环内。当受污染的环丁砜通过振动器时，复原器会吸收其污染物。可以拆除复原器以定期去除污染物。振兴器的特点是施工简单，运行可靠，运行维护成本低。通过这种振兴器，提取系统可以高效率和高容量地运行，而不会产生可怕的腐蚀。

8. 发明申请

WO2009011759A3 LOW-ENERGY EXTRACTIVE DISTILLATION PROCESS FOR DEHYDRATION OF AQUEOUS ETHANOL 审中-公开
标题翻译：低能量萃取蒸馏法处理水溶性乙醇
公开(公告)号：WO2009011759A3
公开(公告)日：2009-03-26
申请号：PCT/US2008008223
申请日：2008-07-01
申请人： AMT INT INC , CPC CORP TAIWAN , LEE FU-MING , LIN TZONG-BIN , HWANG JYH-HAUR , SHEN HUNG-CHUNG , WU KUANG-YEU , VUONG LINDSEY , SU FONG-CHENG , CHENG PO-SUNG , CHANG TAI-PING
发明人： LEE FU-MING , LIN TZONG-BIN , HWANG JYH-HAUR , SHEN HUNG-CHUNG , WU KUANG-YEU , VUONG LINDSEY , SU FONG-CHENG , CHENG PO-SUNG , CHANG TAI-PING
IPC分类号： B01D3/40
CPC分类号： C07C29/84 , B01D3/002 , B01D3/143 , B01D3/40 , Y02P20/125 , Y02P20/57 , Y10S203/14 , Y10S203/20 , C07C31/08
摘要： An energy-efficient extractive distillation process for producing anhydrous ethanol from aqueous/ethanol feeds containing any range of ethanol employs an extractive distillation column (EDC) that operates under no or greatly reduced liquid reflux conditions. The EDC can be incorporated into an integrated process for producing anhydrous ethanol used for gasoline blending from fermentation broth. By using a high-boiling extractive distillation solvent, no solvent is entrained by the vapor phase to the EDC overhead stream, even under no liquid reflux conditions. The energy requirement and severity of the EDC can be further improved by limiting ethanol recovery in the EDC. In this partial ethanol recovery design, ethanol which remains in the aqueous stream from the EDC is recovered in a post-distillation column or the aqueous stream is recycled to a front-end pre-distillation column where the ethanol is readily recovered since the VLE curve for ethanol/water is extremely favorable for distillation.
摘要翻译：从含有任何范围的乙醇的含水/乙醇进料生产无水乙醇的节能提取蒸馏工艺采用萃取蒸馏塔（EDC），该萃取蒸馏塔在没有或大大减少液体回流条件下操作。 EDC可以并入生产无水乙醇的综合工艺中，用于从发酵液中混合汽油。通过使用高沸点萃取蒸馏溶剂，即使在没有液体回流条件下，蒸气相也不会将溶剂夹带到EDC顶部料流中。 EDC的能量需求和严重程度可通过限制EDC中的乙醇回收进一步提高。在这种部分乙醇回收设计中，残留在来自EDC的含水物流中的乙醇在后蒸馏塔中回收，或者含水物流被循环到前端预蒸馏塔中，其中乙醇易于回收，因为VLE曲线对于乙醇/水非常有利于蒸馏。

9. 发明申请

WO2009011759A2 LOW-ENERGY EXTRACTIVE DISTILLATION PROCESS FOR DEHYDRATION OF AQUEOUS ETHANOL 审中-公开
标题翻译：用于脱水乙醛的低能提取蒸馏方法
公开(公告)号：WO2009011759A2
公开(公告)日：2009-01-22
申请号：PCT/US2008/008223
申请日：2008-07-01
申请人： AMT INTERNATIONAL, INC. , CPC CORPORATION, TAIWAN , LEE, Fu-Ming , LIN, Tzong-Bin , HWANG, Jyh-Haur , SHEN, Hung-Chung , WU, Kuang-Yeu , VUONG, Lindsey , SU, Fong-Cheng , CHENG, Po-Sung , CHANG, Tai-Ping
发明人： LEE, Fu-Ming , LIN, Tzong-Bin , HWANG, Jyh-Haur , SHEN, Hung-Chung , WU, Kuang-Yeu , VUONG, Lindsey , SU, Fong-Cheng , CHENG, Po-Sung , CHANG, Tai-Ping
IPC分类号： B01D3/40
CPC分类号： C07C29/84 , B01D3/002 , B01D3/143 , B01D3/40 , Y02P20/125 , Y02P20/57 , Y10S203/14 , Y10S203/20 , C07C31/08
摘要： An energy-efficient extractive distillation process for producing anhydrous ethanol from aqueous/ethanol feeds containing any range of ethanol employs an extractive distillation column (EDC) that operates under no or greatly reduced liquid reflux conditions. The EDC can be incorporated into an integrated process for producing anhydrous ethanol used for gasoline blending from fermentation broth. By using a high-boiling extractive distillation solvent, no solvent is entrained by the vapor phase to the EDC overhead stream, even under no liquid reflux conditions. The energy requirement and severity of the EDC can be further improved by limiting ethanol recovery in the EDC. In this partial ethanol recovery design, ethanol which remains in the aqueous stream from the EDC is recovered in a post-distillation column or the aqueous stream is recycled to a front-end pre-distillation column where the ethanol is readily recovered since the VLE curve for ethanol/water is extremely favorable for distillation.
摘要翻译：从含有任何范围的乙醇的含水/乙醇进料中生产无水乙醇的节能萃取蒸馏方法采用在没有或大大降低的液体回流条件下运行的萃取蒸馏塔（EDC）。 EDC可以并入用于从发酵液中生产用于汽油混合的无水乙醇的整合方法。通过使用高沸点萃取蒸馏溶剂，即使在没有液体回流条件下，没有溶剂被气相夹带到EDC塔顶馏出物中。通过限制EDC中的乙醇回收，可以进一步提高EDC的能量需求和严重程度。在该部分乙醇回收设计中，保留在来自EDC的水流中的乙醇在后蒸馏塔中回收，或将水流循环至前端预蒸馏塔，其中乙醇容易回收，因为VLE曲线对于乙醇/水非常有利于蒸馏。

10. 发明申请

WO2008002359A1 INTEGRATED PROCESS FOR REMOVING BENZENE FROM GASOLINE AND PRODUCING CYCLOHEXANE 审中-公开
标题翻译：从汽油中除去苯并生成环己烷的综合方法
公开(公告)号：WO2008002359A1
公开(公告)日：2008-01-03
申请号：PCT/US2007/011426
申请日：2007-05-11
申请人： CPC CORPORATION, TAIWAN , AMT INTERNATIONAL INC. , LIN, Tzong-Bin , HWANG, Jyh-haur , SHEN, Hung-chung , WU, Kuang-yeu
发明人： LIN, Tzong-Bin , HWANG, Jyh-haur , SHEN, Hung-chung , WU, Kuang-yeu
IPC分类号： C07C13/18 , C07C7/20 , C07C7/00
CPC分类号： C07C13/18 , C07C5/10 , C07C7/08 , Y02P20/125 , C07C15/04
摘要： An integrated, continuous process for transforming feedstock, e.g., reformate, which contains high levels of benzene into a low-benzene content feedstock that is suitable for gasoline blending initially removes benzene from the reformate by extractive distillation, then partially hydrogenating the high purity benzene into cyclohexane under mild conditions in a one-stage hydrogenation reactor, and thereafter recovering a cyclohexane product with high purity from the hydrogenation reactor effluent in a back- end purification step using extractive distillation. The initial or front-end separation step yields a low-benzene content reformate.
摘要翻译：将含有高含量苯的高含量苯转化为适用于汽油混合的低苯含量原料的重整产品的综合连续方法最初通过萃取蒸馏从重整产物中除去苯，然后将高纯度苯部分氢化环己烷在一级氢化反应器中在温和条件下，然后在采用萃取蒸馏的后期纯化步骤中从氢化反应器流出物回收高纯度的环己烷产物。初始或前端分离步骤产生低苯含量的重整产物。

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