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1.发明授权
公开(公告)号：US5744683A
公开(公告)日：1998-04-28
申请号：US666713
申请日：1996-06-18
申请人： Hemant W. Dandekar , Gregory A. Funk , Simon H. Hobbs , Masami Kojima , Ralph D. Gillespie , Herman A. Zinnen , Charles P. McGonegal
发明人： Hemant W. Dandekar , Gregory A. Funk , Simon H. Hobbs , Masami Kojima , Ralph D. Gillespie , Herman A. Zinnen , Charles P. McGonegal
CPC分类号： C07C9/16 , C07C5/2791 , C07C2521/04 , C07C2523/42 , C07C2527/126 , C07C2529/44 , Y02P20/582
摘要： A process for the continuous isomerization of an alkane to produce an isomerized product through contacting the alkane with a simulated moving bed acting as a catalyst for isomerization and an adsorbent for the alkanes has been developed. The alkane may be n-butane and the isomerized product 2-methylpropane, the alkane may be n-pentane and the isomerized product 2-methylbutane or 2,2-dimethylpropane, the alkane may have from 6 up to about 8 carbon atoms with no more than one methyl branch and the isomerized product having the same number of carbon atoms and at least two methyl branches, or the reactant may be a mixture of the foregoing alkanes with the corresponding isomerized products being formed. In a zone of the simulated moving bed, the alkanes are catalytically isomerized to form the isomerized products. The unreacted alkanes are adsorbed, and the isomerized products are collected. In a first subsequent zone of the simulated moving bed, a large portion of the unreacted alkanes are desorbed using a desorbent. In a second subsequent zone of the simulated moving bed, residual adsorbed alkanes are desorbed using a mixture of desorbent and isomerized products, and the desorbed residual alkanes may be removed from the simulated moving bed or may be reacted to form additional isomerized products. The isomerized products are removed from the simulated moving bed and collected. The process may also be used to effect other chemical reactions with the concurrent separation of product.
摘要翻译： 已经开发了通过使烷烃与用作异构化的催化剂的模拟移动床和用于烷烃的吸附剂使烷烃连续异构化以产生异构化产物的方法。 烷烃可以是正丁烷，异构化产物2-甲基丙烷，烷烃可以是正戊烷，异构化产物2-甲基丁烷或2,2-二甲基丙烷，烷烃可以具有6个至约8个碳原子，没有 多于一个甲基支链和具有相同数目的碳原子和至少两个甲基支链的异构化产物，或者反应物可以是前述烷烃与形成相应的异构化产物的混合物。 在模拟移动床的区域中，烷烃被催化异构化以形成异构化产物。 未反应的烷烃被吸附，收集异构化产物。 在模拟移动床的第一后续区域中，大部分未反应的烷烃使用解吸剂解吸附。 在模拟移动床的第二个随后的区域中，残余吸附的烷烃使用解吸剂和异构化产物的混合物解吸，并且解吸的残余烷烃可以从模拟的移动床中除去，或者可以反应形成另外的异构化产物。 将异构化产物从模拟移动床上取出并收集。 该方法也可用于通过产品的同时分离来实现其它化学反应。
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公开(公告)号：US5763730A
公开(公告)日：1998-06-09
申请号：US666717
申请日：1996-06-18
申请人： Hemant W. Dandekar , Gregory A. Funk , Ralph D. Gillespie , Herman A. Zinnen , Charles P. McGonegal , Masami Kojima , Simon H. Hobbs
发明人： Hemant W. Dandekar , Gregory A. Funk , Ralph D. Gillespie , Herman A. Zinnen , Charles P. McGonegal , Masami Kojima , Simon H. Hobbs
CPC分类号： C07C5/2789 , C07C5/2791 , C07C7/13 , C07C9/12 , C07C9/16 , C07C9/18 , C07C2521/04 , C07C2521/06 , C07C2523/42 , C07C2523/54 , C07C2527/126 , C07C2529/22 , Y02P20/582
摘要： A process for the continuous isomerization of an alkane to produce an isomerized product through contacting the alkane with a simulated moving bed acting as a catalyst for isomerization and an adsorbent for the alkanes has been developed. The alkane may be n-butane and the isomerized product 2-methylpropane, the alkane may be n-pentane and the isomerized product 2-methylbutane or 2,2-dimethylpropane, the alkane may have from 6 up to about 8 carbon atoms with no more than one methyl branch and the isomerized product having the same number of carbon atoms and at least two methyl branches, or the reactant may be a mixture of the foregoing alkanes with the corresponding isomerized products being formed. In a zone of the simulated moving bed, the alkanes are catalytically isomerized to form the isomerized products. The unreacted alkanes are adsorbed, and the isomerized products are collected. In a subsequent zone of the simulated moving bed, the unreacted alkanes are desorbed using a desorbent and may be catalytically isomerized to form additional isomerized products which are also separated and collected. The catalyst used in the simulated moving bed may be platinum on tungstated zirconia, and the adsorbent used in the simulated moving bed may be EU-1, ZSM-12, SAPO-5, Y-82, faujasite, erionite, zeolite beta exchanged with sodium, lithium, potassium, barium, calcium, strontium or combinations thereof, zeolite X exchanged with calcium and strontium, mordenite exchanged with sodium, lithium, potassium, barium, calcium, strontium, or combinations thereof.
摘要翻译： 已经开发了通过使烷烃与用作异构化的催化剂的模拟移动床和用于烷烃的吸附剂使烷烃连续异构化以产生异构化产物的方法。 烷烃可以是正丁烷，异构化产物2-甲基丙烷，烷烃可以是正戊烷，异构化产物2-甲基丁烷或2,2-二甲基丙烷，烷烃可以具有6个至约8个碳原子，没有 多于一个甲基支链和具有相同数目的碳原子和至少两个甲基支链的异构化产物，或者反应物可以是前述烷烃与形成相应的异构化产物的混合物。 在模拟移动床的区域中，烷烃被催化异构化以形成异构化产物。 未反应的烷烃被吸附，收集异构化产物。 在模拟移动床的随后区域中，未反应的烷烃使用解吸剂解吸，并且可以被催化异构化以形成也被分离和收集的另外的异构化产物。 在模拟移动床中使用的催化剂可以是钨酸氧化锆上的铂，模拟移动床中使用的吸附剂可以是EU-1，ZSM-12，SAPO-5，Y-82，八面沸石，毛沸石，沸石β与 钠，锂，钾，钡，钙，锶或其组合，与钙和锶交换的沸石X，与钠，锂，钾，钡，钙，锶或它们的组合交换的丝光沸石。
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公开(公告)号：US5744684A
公开(公告)日：1998-04-28
申请号：US666699
申请日：1996-06-18
申请人： Herman A. Zinnen , Charles P. McGonegal , Hemant W. Dandekar , Gregory A. Funk , Ralph D. Gillespie
发明人： Herman A. Zinnen , Charles P. McGonegal , Hemant W. Dandekar , Gregory A. Funk , Ralph D. Gillespie
CPC分类号： C07C9/16 , Y02P20/582
摘要： A process for isomerizing a mixture of alkanes containing pentanes and at least one alkane having from 6 to about 8 carbon atoms and no more than one methyl branch has been developed. The process includes: 1) separating the mixture in a first separation zone to produce two streams, a stream enriched in alkanes having from 6 to about 8 carbon atoms and a stream enriched in pentanes; 2) separating the stream enriched in pentanes in a second separation zone to produce two streams, a stream predominately comprising n-pentane and a stream predominately comprising branched pentanes; 3) passing the stream enriched in alkanes having from 6 to about 8 carbon atoms and the stream enriched in n-pentane to an isomerization zone of a simulated moving bed to produce two streams, a stream containing branched pentanes, n-pentane, and multi-methyl-branched alkanes having from 6 to about 8 carbon atoms, and a stream containing branched pentanes and n-pentane; 4) separating the stream containing branched pentanes, n-pentane, and multi-methyl-branched alkanes having from 6 to about 8 carbon atoms in a third separation zone to produce two streams, a stream enriched in multi-methyl-branched alkanes having from 6 to about 8 carbon atoms and a stream enriched in branched pentanes and n-pentane; and 5) collecting the stream predominately comprising branched pentanes from the second separation zone and the stream enriched in multi-methyl-branched alkanes having from 6 to about 8 carbon atoms from the third separation zone. The catalyst used in the simulated moving bed may be platinum on tungstated zirconia and the adsorbent used in the simulated moving bed may be one or more of the following adsorbents, zeolite beta exchanged with sodium, lithium, potassium, barium, calcium, strontium or combinations thereof, zeolite X exchanged with calcium and strontium, mordenite exchanged with sodium, lithium, potassium, barium, calcium, strontium, or combinations thereof, EU-1, ZSM-12, SAPO-5, Y-82, faujasite and erionite.
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公开(公告)号：US6069289A
公开(公告)日：2000-05-30
申请号：US144229
申请日：1998-08-31
CPC分类号： C07C7/13
摘要： A process to separate multimethyl-branched alkanes from a mixture of multimethyl-branched alkanes, monomethyl-branched alkanes, and normal alkanes has been developed. The mixture is introduced to a simulated moving bed of solid adsorbent particles having the selectivity normal alkanes>monomethyl-branched alkanes>multimethyl-branched alkanes. The adsorbent may be silicalite, ferrierite, zeolite Beta, MAPO-31, SAPO-31, SAPO-11, zeolite X ion exchanged with alkaline cations, alkaline earth cations, or a mixture thereof, and zeolite Y ion exchanged with alkaline cations, alkaline earth cations, or a mixture thereof. A raffinate stream enriched in multimethyl-branched alkanes is removed from the simulated moving bed. The monomethyl-branched alkanes are desorbed from the solid adsorbent particles using a first desorbent capable of desorbing the monomethyl-branched alkanes but incapable of desorbing the normal alkanes and first extract stream enriched in the desorbed monomethyl-branched alkanes is removed from the simulated moving bed. The normal alkanes are desorbed from the solid adsorbent particles using a second desorbent, and a second extract stream enriched in the desorbed normal alkanes is removed from the simulated moving bed. The process may be incorporated into an isomerization flowscheme.
摘要翻译： 已经开发了从多甲基支链烷烃，单甲基支链烷烃和正构烷烃的混合物中分离多支链烷烃的方法。 将混合物引入具有选择性正烷烃>单甲基支链烷烃>多甲基支链烷烃的固体吸附剂颗粒的模拟移动床。 吸附剂可以是硅沸石，镁碱沸石，β沸石，MAPO-31，SAPO-31，SAPO-11，与碱性阳离子交换的沸石X，碱土金属阳离子或其混合物，和与碱性阳离子交换的沸石Y，碱 地球阳离子或其混合物。 从模拟的移动床中除去富含多甲基支链烷烃的萃余液流。 使用能够解吸单甲基支链烷烃但不能解吸正常烷烃的第一解吸剂，从固体吸附剂颗粒解吸单甲基支链烷烃，并且从模拟移动床中除去富含解吸的单甲基支链烷烃的第一提取物流 。 使用第二解吸剂将正常烷烃从固体吸附剂颗粒解吸，并且从模拟移动床中除去富含解吸的正烷烃的第二提取物流。 该方法可以并入异构化流程。
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5.发明授权Process for continuous reaction and separation using fixed catalyst bed serially connected to simulated moving catalyst and adsorbent bed 失效使用与模拟移动催化剂和吸附剂床连续连接的固定催化剂床的连续反应和分离方法
公开(公告)号：US5618972A
公开(公告)日：1997-04-08
申请号：US394995
申请日：1995-02-27
IPC分类号： C07C67/08
CPC分类号： C07C67/08 , Y02P20/582
摘要： A two-stage process for effecting a chemical reaction has been developed. The reactants are contacted with a first stage fixed catalyst bed containing a solid catalyst or mixture of catalysts effective to catalyze the reaction and form a mixture of reactants and products. This reaction mixture and a desorbent are then contacted with a second stage simulated moving bed containing a solid or a mixture of solids effective to catalyze the reaction and to selectively adsorb at least one component from the reaction mixture. At least one product-containing stream is formed and collected. The process may be conducted in the liquid phase or in the vapor phase.
摘要翻译： 已经开发了用于进行化学反应的两阶段方法。 反应物与含有固体催化剂或有效催化反应并形成反应物和产物的混合物的催化剂混合物的第一阶段固定催化剂床接触。 然后将该反应混合物和解吸剂与含有有效催化反应的固体或固体混合物的第二阶段模拟移动床接触，并从反应混合物中选择性吸附至少一种组分。 形成并收集至少一种含有产物的流。 该方法可以在液相或气相中进行。
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6.发明授权Process for concurrent hydrolysis of esters and separation of products using a simulated moving bed 失效使用模拟移动床同时水解酯类和分离产物的方法
公开(公告)号：US5502248A
公开(公告)日：1996-03-26
申请号：US395240
申请日：1995-02-27
CPC分类号： C07C29/095 , C07C51/09 , Y02P20/582
摘要： A process for the continuous hydrolysis of esters containing from 2 to about 16 carbon atoms to form at least one alcohol and at least one carboxylic acid and the concurrent separation of the hydrolysis products has been developed. The process uses a solid bed which acts as a catalyst for hydrolysis and as an adsorbent for at least one class of the products. The process operates in the simulated moving bed mode. A specific embodiment of the invention is one where the simulated moving bed is a homogeneous mixture of at least one solid effective as a hydrolysis catalyst and at least one solid effective as an alcohol or carboxylic acid adsorbent. Another specific embodiment is one where the simulated moving bed is a strongly acidic macroreticular polymeric resin effective both as a hydrolysis catalyst and as an adsorbent for at least one hydrolysis product.
摘要翻译： 已经开发了用于连续水解包含2至约16个碳原子的酯以形成至少一种醇和至少一种羧酸并且同时分离水解产物的方法。 该方法使用固体床，其作为水解催化剂和作为至少一类产物的吸附剂。 该过程在模拟移动床模式下运行。 本发明的具体实施方案是其中模拟移动床是至少一种作为水解催化剂有效的固体和至少一种作为醇或羧酸吸附剂有效的固体的均匀混合物。 另一个具体实施方案是其中模拟的移动床是强酸性大网络聚合物树脂，其有效地作为水解催化剂和用作至少一种水解产物的吸附剂。
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公开(公告)号：US5530172A
公开(公告)日：1996-06-25
申请号：US333682
申请日：1994-11-03
CPC分类号： C07C9/18 , C07C5/2789 , C07C5/2791 , C07C7/13 , C07C9/12 , C07C9/16 , C07C2521/04 , C07C2521/06 , C07C2523/42 , C07C2523/54 , C07C2527/126 , C07C2529/22 , Y02P20/582
摘要： A process for the continuous isomerization of an alkane to produce an isomerized product through contacting the alkane with a simulated moving bed acting as a catalyst for isomerization and an adsorbent for the alkanes has been developed. The alkane may be n-butane and the isomerized product 2-methylpropane, the alkane may be n-pentane and the isomerized product 2-methylbutane or 2,2-dimethylpropane, the alkane may have from 6 up to about 8 carbon atoms with no more than one methyl branch and the isomerized product having the same number of carbon atoms and at least two methyl branches, or the reactant may be a mixture of the foregoing alkanes with the corresponding isomerized products being formed. In a zone of the simulated moving bed, the alkanes are catalytically isomerized to form the isomerized products. The unreacted alkanes are adsorbed, and the isomerized products are collected. In a subsequent zone of the simulated moving bed, the unreacted alkanes are desorbed using a desorbent and are catalytically isomerized to form additional isomerized products which are also separated and collected.
摘要翻译： 已经开发了通过使烷烃与用作异构化的催化剂的模拟移动床和用于烷烃的吸附剂使烷烃连续异构化以产生异构化产物的方法。 烷烃可以是正丁烷，异构化产物2-甲基丙烷，烷烃可以是正戊烷，异构化产物2-甲基丁烷或2,2-二甲基丙烷，烷烃可以具有6个至约8个碳原子，没有 多于一个甲基支链和具有相同数目的碳原子和至少两个甲基支链的异构化产物，或者反应物可以是前述烷烃与形成相应的异构化产物的混合物。 在模拟移动床的区域中，烷烃被催化异构化以形成异构化产物。 未反应的烷烃被吸附，收集异构化产物。 在模拟移动床的随后区域中，未反应的烷烃使用解吸剂解吸，并且被催化异构化以形成也被分离和收集的另外的异构化产物。
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8.发明授权Process for methanol production using simulated moving bed reactive chromatography 失效使用模拟移动床反应层析的甲醇生产工艺
公开(公告)号：US5449696A
公开(公告)日：1995-09-12
申请号：US283890
申请日：1994-08-01
IPC分类号： C07C29/151 , C07C27/06 , C07C29/15
CPC分类号： C07C29/1512 , Y02P20/582
摘要： A process for the continuous production of methanol through contacting at least one feed stream containing at least carbon monoxide and hydrogen, and optionally carbon dioxide, with a simulated moving bed acting as a catalyst for methanol synthesis and an adsorbent for the methanol formed has been developed. The carbon monoxide and hydrogen are catalytically reacted to form methanol which is separated from the carbon monoxide and hydrogen by concurrent adsorption. The methanol is desorbed using a carbon dioxide or hydrogen desorbent and collected. A specific embodiment is one where the feed stream is introduced to the simulated moving bed at a temperature from about 210.degree. to about 270.degree. C. and the desorbent is introduced to the simulated moving bed at a temperature of about 150.degree. to about 250.degree. C.
摘要翻译： 已经开发了通过使至少一种含有至少一氧化碳和氢气的进料流和任选的二氧化碳与用作甲醇合成催化剂的模拟移动床和形成甲醇的吸附剂接触来连续生产甲醇的方法 。 一氧化碳和氢气被催化反应以形成甲醇，其通过同时吸附与一氧化碳和氢气分离。 使用二氧化碳或氢解吸剂解吸甲醇并收集。 一个具体的实施方案是将原料流在约210℃至约270℃的温度下引入到模拟移动床中，并且解吸剂在约150℃至约250℃的温度下引入模拟移动床。 C。
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9.发明授权Process for alkane isomerization using reactive chromatography and reactive desorbent 失效使用反应层析和反应解吸剂进行烷烃异构化的方法
公开(公告)号：US5530173A
公开(公告)日：1996-06-25
申请号：US333683
申请日：1994-11-03
CPC分类号： C07C9/16 , Y02P20/582
摘要： A process for isomerizing a mixture of alkanes containing pentanes and at least one alkane having from 6 to about 8 carbon atoms and no more than one methyl branch has been developed. The process includes: 1) separating the mixture in a first separation zone to produce two streams, a stream enriched in alkanes having from 6 to about 8 carbon atoms and a stream enriched in pentanes; 2) separating the stream enriched in pentanes in a second separation zone to produce two streams, a stream predominately comprising n-pentane and a stream predominately comprising branched pentanes; 3) passing the stream enriched in alkanes having from 6 to about 8 carbon atoms and the stream enriched in n-pentane to an isomerization zone of a simulated moving bed to produce two streams, a stream containing branched pentanes, n-pentane, and multi-methyl-branched alkanes having from 6 to about 8 carbon atoms, and a stream containing branched pentanes and n-pentane; 4) separating the stream containing branched pentanes, n-pentane, and multi-methyl-branched alkanes having from 6 to about 8 carbon atoms in a third separation zone to produce two streams, a stream enriched in multi-methyl-branched alkanes having from 6 to about 8 carbon atoms and a stream enriched in branched pentanes and n-pentane; and 5) collecting the stream predominately comprising branched pentanes from the second separation zone and the stream enriched in multi-methyl-branched alkanes having from 6 to about 8 carbon atoms from the third separation zone.
摘要翻译： 已经开发了使包含戊烷和至少一种具有6至约8个碳原子和不超过一个甲基分支的烷烃的烷烃的混合物异构化的方法。 该方法包括：1）在第一分离区中分离混合物以产生两股物流，富含具有6至约8个碳原子的烷烃和富含戊烷的物流; 2）在第二分离区中分离富含戊烷的物流以产生两股料流，主要含有正戊烷和主要含有支链戊烷的料流; 3）将富含6至约8个碳原子的烷烃和富含正戊烷的料流送入模拟移动床的异构化区以产生两股料流，含有支链戊烷，正戊烷和多 具有6至约8个碳原子的甲基支链烷烃和含有支链戊烷和正戊烷的物流; 4）在第三分离区中分离含有支化戊烷，正戊烷和具有6至约8个碳原子的多甲基支链烷烃以产生两股料流，富含多甲基支链烷烃的料流具有 6至约8个碳原子和富含支化戊烷和正戊烷的物流; 和5）从第二分离区主要含有支链戊烷的物流和富含具有6至约8个碳原子的多甲基支链烷烃的物流从第三分离区收集。
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公开(公告)号：US5523326A
公开(公告)日：1996-06-04
申请号：US330780
申请日：1994-10-28
IPC分类号： C07C5/27 , C07C7/13 , C07C29/151 , C07C29/152 , C07C27/00
CPC分类号： C07C7/13 , C07C5/2772 , C07C5/2789 , C07C5/2791 , C12C11/02 , C07C2521/04 , C07C2521/06 , C07C2523/42 , C07C2527/126 , C07C2529/22 , Y02P20/582
摘要： A process is disclosed for the production of methanol from a synthesis gas stream comprising hydrogen and carbon dioxide in which an equilibrium reaction to methanol is achieved by conducting the reaction and the product separation in a pressure swing adsorption and reaction zone containing a uniformly distributed adsorbent for the selective adsorption of methanol and a catalyst for the equilibrium conversion of the synthesis gas to methanol. More specifically, the process achieves the production of methanol by the reaction of the hydrogen and the carbon oxide with the simultaneous adsorption of the product at the same temperature and pressure. The passing of the synthesis stream to the bed is terminated and the bed is purged and depressurized to desorb the methanol product. In one embodiment, the bed is cocurrently purged with at least a portion of an effluent stream prior to depressurizing the bed. In further embodiments, the pressure swing adsorption and reaction zone is employed in a methanol synthesis loop both with and without a secondary reforming step to provide a lean synthesis gas with a stoichiometric ratio of carbon to hydrogen. The use of the pressure swing adsorption and reaction zone results in a higher conversion of the synthesis gas to methanol and significantly reduces the capital and operation costs in the production of methanol by reducing compressor requirements.
摘要翻译： 公开了一种从包含氢气和二氧化碳的合成气流中生产甲醇的方法，其中通过在含有均匀分布的吸附剂的变压吸附和反应区进行反应和产物分离来实现与甲醇的平衡反应， 选择性吸附甲醇和催化剂用于将合成气平衡转化为甲醇。 更具体地，该方法通过氢和氧化碳的反应同时在相同的温度和压力下吸附产物来实现甲醇的生产。 终止合成物流到床中，并将床吹扫和减压以解吸甲醇产物。 在一个实施方案中，在对床进行减压之前，床与至少一部分流出物流并流地吹扫。 在另外的实施方案中，变压吸附和反应区用于具有和不具有二次重整步骤的甲醇合成回路，以提供具有化学计量比的碳与氢的贫的合成气。 使用变压吸附和反应区导致合成气转化为甲醇，并通过降低压缩机要求，显着降低生产甲醇的资金和运行成本。
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