公开(公告)号：US5338889A

公开(公告)日：1994-08-16

申请号：US998169

申请日：1992-12-29

申请人： Bipin V. Vora ,  Tamotsu Imai ,  Peter J. Pujado

发明人： Bipin V. Vora ,  Tamotsu Imai ,  Peter J. Pujado

IPC分类号： C07C41/06

CPC分类号： C07C41/06

摘要： A combination of an etherification process and a process for the isomerization of linear alkenes to isoalkenes uses an adsorptive separation zone for olefin and paraffin separation upstream of the MTBE unit to reduce olefin losses associated with the rejection of butanes. The location of the MTBE unit downstream of the adsorptive separation zone facilitates the essentially complete removal of isobutane from the process. Supplemental rejection of isobutane downstream of the adsorptive separation permits the use of low purity adsorptive separation zone and also allows the recovery of a high purity butene-1 product.

摘要翻译： 醚化过程和线性烯烃异构化为异烯烃的方法的组合使用MTBE单元上游的烯烃和链烷烃分离吸附分离区，以减少与异丁烷排斥相关的烯烃损失。 在吸附分离区下游的MTBE单元的位置有助于从该方法基本上完全除去异丁烷。 在吸附分离下游的异丁烷的补充排除允许使用低纯度吸附分离区，并且还允许回收高纯度的丁烯-1产物。

公开(公告)号：US5019662A

公开(公告)日：1991-05-28

申请号：US484027

申请日：1990-02-23

申请人： Bipin V. Vora ,  Dusan J. Engel

发明人： Bipin V. Vora ,  Dusan J. Engel

IPC分类号： C10G69/12

CPC分类号： C10G69/123 ,  C10G2400/14

摘要： A process for the production of hydrocarbon white oil by means of hydrogenating a heavy aromatic alkylate is disclosed. The process is characterized in that its feedstock is a previously undesired heavy hydrocarbon byproduct of aromatic alkylation. A white oil derived from such a process has good color and odor properties and results in a superior white oil lubricant.

摘要翻译： 公开了通过氢化重芳族烷基化物生产碳氢化合物白油的方法。 该方法的特征在于其原料是芳族烷基化的先前不期望的重质烃副产物。 由这种方法得到的白油具有良好的颜色和气味特性，并产生优异的白油润滑剂。

公开(公告)号：US5008467A

公开(公告)日：1991-04-16

申请号：US445503

申请日：1989-12-04

申请人： Bipin V. Vora ,  Norman H. Scott

发明人： Bipin V. Vora ,  Norman H. Scott

IPC分类号： C07C41/06

CPC分类号： C07C41/06 ,  Y02P20/125

摘要： An integrated process of producing MTBE by the dehydrogenation of isobutane and the etherification of the resulting isobutene with methanol is simplified by directly charging the effluent of a dehydrogenation zone without prior separation to an etherification zone arranged to provide countercurrent contact of isobutene and the methanol reactants such that an MTBE product is recovered as a bottoms stream and a relatively isobutene-free overhead stream is recycled to the dehydrogenation zone. Overall separation facilities are simplified by only separating C.sub.3 hydrocarbons from the etherification zone product stream. This arrangement eliminates C.sub.3 separation facilities ahead of the etherification zone and reduces the quantity of C.sub.4 hydrocarbons that are received by the separation zone. The reaction zone may contain a series of beds arranged to further eliminate the carry over of isobutene to the separation facilities. This arrangement also allows a recovery of unreactive or unreacted C.sub.4 hydrocarbons from the top of the etherification zone.

摘要翻译： 通过直接对脱氢区的流出物进行直接充电而不事先分离到醚化区，以提供异丁烯与甲醇反应物的逆流接触，从而简化了通过异丁烷脱氢制备MTBE和所得异丁烯与甲醇的醚化的综合方法 将MTBE产物作为底部物流回收，并且将相对不含异丁烷的塔顶馏出物再循环至脱氢区。 通过仅将C3烃与醚化区产物流分离，可简化总体分离设施。 这种布置消除了醚化区之前的C3分离设备，并减少了分离区接收的C4烃的量。 反应区可以包含一系列床，其布置成进一步消除异丁烯携带到分离设备。 这种布置还允许从醚化区的顶部回收未反应的或未反应的C 4烃。

公开(公告)号：US4902848A

公开(公告)日：1990-02-20

申请号：US214355

申请日：1988-07-01

申请人： Norman H. Scott ,  Bipin V. Vora

发明人： Norman H. Scott ,  Bipin V. Vora

IPC分类号： C07C5/333 ,  C07C11/06

CPC分类号： C07C11/06 ,  C07C5/3337

摘要： A process for the dehydrogenation of a dehydrogenatable hydrocarbon feedstock having small quantities of higher boiling range hydrocarbons which comprises: (a) introducing the dehydrogenatable hydrocarbon feedstock into a fractionation zone having at least a portion of reflux to a fractionation column supplied by the dehydrogenatable hydrocarbon feedstock to provide a dehydrogenatable hydrocarbon stream having a reduced concentration of higher boiling range hydrocarbons and a stream comprising the higher boiling range hydrocarbons; (b) introducing the dehydrogenatable hydrocarbon stream having a reduced concentration of higher boiling range hydrocarbon recovered in step (a) into a dehydrogenation zone containing dehydrogenation catalyst and operated at dehydrogenation conditions to provide a hydrocarbon stream comprising dehydrogenated hydrocarbons and unconverted dehydrogenatable hydrocarbons; (c) separating the hydrocarbon stream comprising dehydrogenated hydrocarbons and unconverted dehydrogenatable hydrocarbons from step (b) to provide a product stream comprising dehydrogenated hydrocarbons and a recycle stream comprising unconverted dehydrogenatable hydrocarbons; and (d) introducing the recycle stream comprising unconverted dehydrogenatable hydrocarbons recovered in step (c) into the fractionation column to provide at least a portion of feed to the fractionation column.

摘要翻译： 一种用于具有少量较高沸点烃的可脱氢烃原料脱氢的方法，其包括：（a）将可脱氢烃原料引入具有至少一部分回流的分馏区至由可脱氢烃原料提供的分馏塔 以提供具有降低的较高沸点烃类浓度的可脱氢烃物流和包含较高沸点烃的物流; （b）将具有在步骤（a）中回收的较低沸点烃的浓度较低的可脱氢烃流引入含脱氢催化剂的脱氢区，并在脱氢条件下操作以提供包含脱氢烃和未转化的可脱氢烃的烃流; （c）从步骤（b）中分离包含脱氢烃和未转化的可脱氢烃的烃流，以提供包含脱氢烃的产物流和包含未转化的可脱氢烃的再循环料流; 和（d）将包含步骤（c）中回收的未转化的可脱氢烃的再循环料流引入分馏塔中，以提供至少一部分进料至分馏塔。

公开(公告)号：US4816607A

公开(公告)日：1989-03-28

申请号：US211317

申请日：1988-06-24

申请人： Bipin V. Vora ,  Peter R. Pujado ,  Richard E. Conser

发明人： Bipin V. Vora ,  Peter R. Pujado ,  Richard E. Conser

IPC分类号： C07C5/27 ,  C07C41/06

CPC分类号： C07C41/06 ,  C07C5/2791

摘要： A multistep hydrocarbon conversion process for the production of ethers including methyl tertiary butyl ether (MTBE) from light paraffins and alcohols is disclosed. A mixture of C.sub.4 isoparaffins, normal paraffins, an etherification recycle and butane isomerization effluent enter a deisobutanizer column. Normal paraffins withdrawn from the fractionator are isomerized and returned to the fractionator, and isoparaffins are withdrawn from the fractionator and dehydrogenated. The resulting olefins enter an etherification zone for reaction of isobutene with a C.sub.2 -C.sub.5 alcohol. Unreacted paraffins and olefins comprise a portion of the etherification effluent entering the deisobutanizer. After separation for recovery of the ether product, unreacted paraffins and olefins are passed through a dehydrogenation zone for saturation of the olefins and then returned to the deisobutanizer column. Normal butanes are withdrawn as a sidecut from the deisobutanizer. The sidecut passes to an isomerization zone and a mixture of isobutane and normal butane is recycled to the deisobutanizer. In a highly preferred embodiment, spent catalyst from the isomerization zone fulfills the catalyst requirement of the dehydrogenation zone.

摘要翻译： 公开了一种用于从轻链烷烃和醇生产包括甲基叔丁基醚（MTBE）的醚的多步烃转化方法。 C4异构烷烃，正链烷烃，醚化再循环和丁烷异构化流出物的混合物进入脱异丁烷塔。 从分馏器中取出的正链烷烃被异构化并返回到分馏器中，异链烷烃从分馏器中取出并脱氢。 所得烯烃进入醚化区以使异丁烯与C 2 -C 5醇反应。 未反应的链烷烃和烯烃包含进入脱异丁烷的醚化流出物的一部分。 在分离回收醚产物后，将未反应的链烷烃和烯烃通过脱氢区以使烯烃饱和，然后返回到脱异丁烷塔。 正常丁烷作为脱离异构体的副产物被撤回。 旁路经过异构化区，异丁烷和正丁烷的混合物再循环到脱异丁烷。 在非常优选的实施方案中，来自异构化区的废催化剂满足脱氢区的催化剂需求。

公开(公告)号：US4778942A

公开(公告)日：1988-10-18

申请号：US168098

申请日：1988-03-14

申请人： Bipin V. Vora ,  Norman H. Scott

发明人： Bipin V. Vora ,  Norman H. Scott

IPC分类号： C07C5/32 ,  C07C5/327

CPC分类号： C07C5/325

摘要： A process for the dehydrogenation of a dehydrogenatable hydrocarbon feedstock having small quantities of higher boiling range hydrocarbons which comprises: (a) introducing the dehydrogenatable hydrocarbon feedstock into a fractionation zone having at least a portion of reflux to a fractionation column supplied by a hereinafter-described recycle stream to provide a dehydrogenatable hydrocarbon stream having a reduced concentration of higher boiling range hydrocarbons and a stream comprising the higher boiling range hydrocarbons; (b) introducing the dehydrogenatable hydrocarbon stream having a reduced concentration of higher boiling range hydrocarbon recovered in step (a) into a dehydrogenation zone containing dehydrogenation catalyst and operated at dehydrogenation conditions to provide a hydrocarbon stream comprising dehydrogenated hydrocarbons and unconverted dehydrogenatable hydrocarbons; (c) separating the hydrocarbon stream comprising dehydrogenated hydrocarbons and unconverted dehydrogenatable hydrocarbons from step (b) to provide a product stream comprising dehydrogenated hydrocarbons and a recycle stream comprising unconverted dehydrogenatable hydrocarbons; (d) introducing the recycle stream comprising unconverted dehydrogenatable hydrocarbons recovered in step (c) into the fractionation column to provide at least a portion of reflux to the fractionation column as described hereinabove in step (a).

摘要翻译： 一种用于具有少量较高沸点烃的可脱氢烃原料脱氢的方法，其包括：（a）将可脱氢烃原料引入到具有至少一部分回流的分馏区中，由分馏塔提供至下文所述 提供具有降低的较高沸点烃类浓度的可脱氢烃物流和包含较高沸点烃的物流; （b）将具有在步骤（a）中回收的较低沸点烃的浓度较低的可脱氢烃流引入含脱氢催化剂的脱氢区，并在脱氢条件下操作以提供包含脱氢烃和未转化的可脱氢烃的烃流; （c）从步骤（b）中分离包含脱氢烃和未转化的可脱氢烃的烃流，以提供包含脱氢烃的产物流和包含未转化的可脱氢烃的再循环料流; （d）将步骤（c）中回收的未转化的可脱氢烃的再循环料流引入分馏塔中，以提供至少一部分回流至上述步骤（a）中所述的分馏塔。

公开(公告)号：US4663493A

公开(公告)日：1987-05-05

申请号：US744075

申请日：1985-06-12

申请人： Bipin V. Vora ,  Roy C. Berg ,  Norman H. Scott

发明人： Bipin V. Vora ,  Roy C. Berg ,  Norman H. Scott

IPC分类号： C07C5/32 ,  C07C5/333 ,  C07C5/42

CPC分类号： C07C5/321 ,  C07C5/3337

摘要： A process for dehydrogenating dehydrogenatable hydrocarbons is disclosed in which a heat providing stream is utilized to supply a portion of the endothermic heat requirement of the reaction zone feed thereby decreasing the temperature drop of the dehydrogenation zone material. As a result, the amount of deleterious side reactions such as thermal cracking is reduced, and an increase in conversion of the dehydrogenatable hydrocarbons is realized.

摘要翻译： 公开了一种使可脱氢烃脱氢的方法，其中使用供热流来提供反应区进料的一部分吸热热量，从而降低脱氢区材料的温度降。 结果，有害的副反应如热裂解的量减少，并且可以实现可脱氢烃的转化率的增加。

公开(公告)号：US4575567A

公开(公告)日：1986-03-11

申请号：US636900

申请日：1984-08-02

申请人： Bipin V. Vora

发明人： Bipin V. Vora

IPC分类号： C07C41/06 ,  C07C41/00

CPC分类号： C07C41/06 ,  Y02P20/125

摘要： An improved method is disclosed for regenerating adsorbents used in an integrated process for the production of ethers such as methyl tertiary butyl ether by the reaction of an alcohol with an isoolefin. The sorbents are used to remove oxygenated compounds such as the product ether and the feed alcohol from a hydrocarbon-rich stream withdrawn from the etherification zone. The regeneration procedure includes contacting the sorbent with a heated hydrocarbon stream. The resultant contaminated hydrocarbon stream is passed into a stripping column used to remove light ends from the effluent of a dehydrogenation zone in which the isoolefin fed to the etherification zone is produced. The oxygenated compounds collected on the sorbent are thus selectively recycled or rejected rather than being destroyed or lost in low purity effluent streams.

摘要翻译： 公开了一种用于再生吸附剂的改进方法，所述吸附剂用于通过醇与异烯烃的反应来生产醚如甲基叔丁基醚的一体化方法。 吸附剂用于从从醚化区排出的富烃流中除去氧化化合物，例如产物醚和进料醇。 再生方法包括使吸附剂与加热的烃流接触。 所得到的被污染的烃流被送入汽提塔，用于从其中产生进入醚化区的异烯烃的脱氢区的流出物除去轻馏分。 因此，在吸附剂上收集的含氧化合物被选择性地循环或被拒绝，而不是在低纯度流出物流中被破坏或损失。

公开(公告)号：US4520218A

公开(公告)日：1985-05-28

申请号：US582657

申请日：1984-02-23

申请人： Roy C. Berg ,  Thomas P. Malloy ,  Bipin V. Vora

发明人： Roy C. Berg ,  Thomas P. Malloy ,  Bipin V. Vora

IPC分类号： C07C15/113 ,  C07C2/64

CPC分类号： C07C15/113

摘要： A process is disclosed for producing a mixture of mono- and diallkylated aromatic hydrocarbons suitable for use as a detergent or as a surfactant in enhanced oil recovery processes. Two alkylation reaction stages are used in series, with a separate amount of an acyclic olefin being charged to each reaction stage. The effluent of the second alkylation reaction stage is separated by fractionation to form a mixture of mono- and dialkylated hydrocarbons. A portion of this mixture is recycled to the second alkylation reaction stage, with remainder being withdrawn as the product stream.

摘要翻译： 公开了一种用于生产适合用作清洁剂或增强油回收方法中的表面活性剂的单烷基化和二烷基化芳烃的混合物的方法。 两个烷基化反应阶段串联使用，每个反应阶段加入单独量的无环烯烃。 第二烷基化反应阶段的流出物通过分馏分离以形成单烃和二烷基化烃的混合物。 将该混合物的一部分再循环至第二烷基化反应阶段，其余部分作为产物流排出。

公开(公告)号：US4423251A

公开(公告)日：1983-12-27

申请号：US416414

申请日：1982-09-09

申请人： Peter R. Pujado ,  Bipin V. Vora

发明人： Peter R. Pujado ,  Bipin V. Vora

IPC分类号： C07C11/09 ,  C07C29/04 ,  C07C41/06

CPC分类号： C07C41/06 ,  C07C11/09 ,  C07C29/04

摘要： A hydrocarbon conversion process is disclosed which may be used to produce high purity isobutylene and/or tertiary butyl alcohol and methyl tertiary butyl ether. A mixed C.sub.4 feed stream is divided into two portions with a first portion being passed through a hydration zone to produce the tertiary butyl alcohol. The remaining hydrocarbons withdrawn from the hydration zone and the second portion of the feed stream are changed to an etherification zone. The unconverted hydrocarbons exiting the etherification zone may be subjected to isomerization and/or dehydrogenation to produce additional isobutylene. The high purity isobutylene is obtained by dehydrating the tertiary butyl alcohol.

摘要翻译： 公开了可用于生产高纯度异丁烯和/或叔丁醇和甲基叔丁基醚的烃转化方法。 将混合的C4进料流分成两部分，其中第一部分通过水合区以产生叔丁醇。 将从水合区域排出的剩余的烃和进料流的第二部分改变为醚化区。 离开醚化区的未转化的烃可以进行异构化和/或脱氢以产生额外的异丁烯。 通过使叔丁醇脱水获得高纯度异丁烯。