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公开(公告)号：US06222084B1
公开(公告)日：2001-04-24
申请号：US09289488
申请日：1999-04-09
IPC分类号： C07C266
CPC分类号： C07C15/073 , C07C2/66 , C07C2529/08 , C07C2529/40
摘要： Process for the production of ethylbenzene by alkylation over a silicalite alkylation catalyst with subsequent transalkylation of diethylbenzene with the alkylation catalyst and conditions selected to retard xylene production and also heavies production. Benzene and ethylene are applied to a multi-stage alkylation reaction zone having a plurality of series-connected catalyst beds containing silicalite of a predominantly monoclinic symmetry having a silica/alumina ratio of at least 275. Gas-phase ethylation of benzene is at a flow rate to provide a space velocity of benzene over the catalyst to produce a xylene concentration of about 600 ppm or less of the ethylbenzene content. Periodically the space velocity may be increased to a value which is greater than the space velocity associated with a minimum concentration of diethylbenzene in the alkylation product such that diethylbenzene production is enhanced while minimizing any attendant transalkylation reactions within the alkylation reaction zone. The alkylation reactor output is applied to an intermediate recovery zone for the separation and recovery of ethylbenzene with the recovery of a polyalkylated aromatic component which is supplied along with benzene to a transalkylation reaction zone for disproportionation to provide a reduced diethylbenzene content and an enhanced ethylbenzene content. A specific monoclinic silicalite alkylation catalyst has a silica/alumina ratio of at least 300 and has a crystal size of less than one micron.
摘要翻译： 通过在硅沸石烷基化催化剂上烷基化生产乙苯的方法，随后用烷基化催化剂对二乙基苯进行烷基转移和选择用于延迟二甲苯生产和重质生产的条件。 苯和乙烯被施加到多级烷基化反应区，该多级烷基化反应区具有多个串联连接的催化剂床，该催化剂床含有主要单斜对称的硅沸石，其二氧化硅/氧化铝比至少为275.苯的气相乙基化处于流动 速率以提供苯在催化剂上的空速，以产生约600ppm或更少的乙苯含量的二甲苯浓度。 定期地，空间速度可以增加到大于与烷基化产物中的二乙基苯的最小浓度相关联的空间速度的值，使得二苯基产生增强，同时最小化在烷基化反应区内的任何伴随的烷基转移反应。 将烷基化反应器输出应用于中间回收区，用于分离和回收乙苯，回收与苯一起供应的多烷基化芳族组分至用于歧化的烷基转移反应区，以提供还原的二乙苯含量和增强的乙苯含量 。 特定的单斜硅沸石烷基化催化剂具有至少300的二氧化硅/氧化铝比例，其晶体尺寸小于1微米。
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公开(公告)号：US6057485A
公开(公告)日：2000-05-02
申请号：US193310
申请日：1998-11-17
CPC分类号： C07C15/073 , C07C2/66 , C07C2529/035 , C07C2529/08
摘要： Ethylbenzene is produced by alkylation over a split load of monoclinic silicalite alkylation catalysts having different silica/alumina ratios. A feedstock containing benzene and ethylene is applied to a multi-stage alkylation reaction zone having a plurality of series-connected catalyst beds. At least one catalyst bed contains a first monoclinic silicalite catalyst having a silica/alumina ratio of at least 275. At least one other catalyst bed contains a second monoclinic silicalite catalyst having a silica/alumina ratio of less than about 275. The alkylation reaction zone is operated at temperature and pressure conditions in which the benzene is in a gaseous phase to cause gas-phase alkylation of the aromatic substrate in the presence of the monoclinic silicalite catalysts to produce an alkylation product. The alkylation product is then withdrawn from the reaction zone for separation and recovery. The use of the split load of catalyst allows a higher purity ethylbenzene product to be produced at improved efficiencies than if only one of the catalysts were used by itself.
摘要翻译： 通过在具有不同二氧化硅/氧化铝比的单斜晶硅沸石烷基化催化剂的分裂负载下烷基化来制备乙苯。 将含有苯和乙烯的原料施加到具有多个串联催化剂床的多级烷基化反应区。 至少一个催化剂床含有二氧化硅/氧化铝比至少为275的第一单斜晶硅沸石催化剂。至少一个其它催化剂床含有二氧化硅/氧化铝比小于约275的第二单斜硅沸石催化剂。烷基化反应区 在其中苯处于气相的温度和压力条件下操作，以在单斜硅沸石催化剂的存在下引起芳族底物的气相烷基化以产生烷基化产物。 然后将烷基化产物从反应区取出以进行分离和回收。 与仅使用一种催化剂本身一起使用的催化剂的分离负载的使用允许以提高的效率生产更高纯度的乙苯产物。
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公开(公告)号：US5847255A
公开(公告)日：1998-12-08
申请号：US861206
申请日：1997-05-21
CPC分类号： C07C15/073 , B01J29/084 , C07C2/66 , C07C2529/035 , C07C2529/08 , C07C2529/40 , Y02P20/52
摘要： Process for the production of ethylbenzene by alkylation over a silicalite alkylation catalyst with the subsequent transalkylation of diethylbenzene with the alkylation catalyst and conditions selected to retard xylene production and also heavies production. A feedstock containing benzene and ethylene is applied to a multi-stage alkylation reaction zone having a plurality of series-connected catalyst beds containing a pentasil molecular sieve alkylation catalyst which is silicalite of a predominantly monoclinic symmetry having a silica/alumina ratio of at least 275. The feedstock is supplied to the alkylation reaction zone to cause gas-phase ethylation of benzene at a flow rate to provide a space velocity of benzene over the catalyst to produce a xylene concentration in the product of about 600 ppm or less based upon the ethylbenzene content. Periodically the space velocity may be increased to a value which is greater than the space velocity associated with a minimum concentration of diethylbenzene in the alkylation product such that diethylbenzene production is enhanced while minimizing any attendant transalkylation reactions within the alkylation reaction zone. This is accompanied by a relatively low xylene content in the product, specifically no more than 600 ppm based upon the ethylbenzene in the product. The output from the alkylation reactor is applied to an intermediate recovery zone for the separation and recovery of ethylbenzene with the recovery of a polyalkylated aromatic component which is supplied along with benzene to a transalkylation reaction zone where the polyalkylated aromatic fraction is subject to disproportionation to provide a reduced diethylbenzene content and an enhanced ethylbenzene content.
摘要翻译： 通过在硅沸石烷基化催化剂上烷基化制备乙苯的方法，随后使用烷基化催化剂对二乙基苯进行烷基转移和选择用于延迟二甲苯生产和重质生产的条件。 将含有苯和乙烯的原料施加到多级烷基化反应区，该多段烷基化反应区具有多个串联连接的催化剂床，该催化剂床含有pentasil分子筛烷基化催化剂，其为主要单斜对称的硅沸石，二氧化硅/氧化铝比为至少275 将原料供应到烷基化反应区，以使流速进行苯的气相乙基化，以提供苯在催化剂上的空速，以产生基于乙苯约600ppm或更低的产物中的二甲苯浓度 内容。 定期地，空间速度可以增加到大于与烷基化产物中的二乙基苯的最小浓度相关联的空间速度的值，使得二苯基产生增强，同时最小化在烷基化反应区内的任何伴随的烷基转移反应。 这伴随产物中相对较低的二甲苯含量，特别是不超过600ppm，基于产物中的乙苯。 将烷基化反应器的输出应用于中间回收区，用于分离和回收乙苯，回收与苯一起供给的烷基化芳族组分到烷基转移反应区，其中多烷基化芳族部分经过歧化以提供 二乙苯含量降低，乙苯含量增加。
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公开(公告)号：US06268305B1
公开(公告)日：2001-07-31
申请号：US09544581
申请日：2000-04-06
申请人： James R. Butler , Ashim Kumar Ghosh
发明人： James R. Butler , Ashim Kumar Ghosh
IPC分类号： B01J2100
CPC分类号： C07C2/66 , B01J29/40 , B01J35/002 , B01J35/0026 , B01J35/026 , B01J35/1019 , B01J35/1038 , B01J35/1042 , B01J35/1061 , C07C2529/035 , C07C15/02
摘要： Ethylbenzene is produced by alkylation over monoclinic silicalite catalysts having a weak acid site concentration of less than 50 micromoles per gram. A Feed stock containing benzene and ethylene is applied to an alkylation reaction zone having at least one catalyst bed containing a monoclinic silicalite catalyst having a weak acid site concentration of less than 50 micromoles per gram. The alkylation reaction zone is operated at temperature and pressure conditions in which the benzene is in a gaseous phase to cause gas-phase alkylation of the aromatic substrate in the presence of the silicalite catalysts to produce an alkylation product. The alkylation product is then withdrawn from the reaction zone for separation and recovery.
摘要翻译： 通过在弱酸性位点浓度小于50微摩尔/克的单斜硅沸石催化剂上烷基化生产乙苯。 将含有苯和乙烯的原料储存在具有至少一个含有弱酸性位点浓度小于50微摩尔/克的单斜硅沸石催化剂的催化剂床的烷基化反应区。 烷基化反应区在其中苯处于气相的温度和压力条件下运行，以在硅沸石催化剂存在下引起芳族底物的气相烷基化以产生烷基化产物。 然后将烷基化产物从反应区取出以进行分离和回收。
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公开(公告)号：US6090991A
公开(公告)日：2000-07-18
申请号：US259747
申请日：1999-02-27
申请人： James R. Butler , Ashim Kumar Ghosh
发明人： James R. Butler , Ashim Kumar Ghosh
CPC分类号： B01J35/002 , B01J29/40 , C07C2/66 , B01J35/0026 , B01J35/026 , B01J35/1019 , B01J35/1038 , B01J35/1042 , C07C2529/035
摘要： Ethylbenzene is produced by alkylation over monoclinic silicalite catalysts having a weak acid site concentration of less than 50 micromoles per gram. A feedstock containing benzene and ethylene is applied to an alkylation reaction zone having at least one catalyst bed containing a monoclinic silicalite catalyst having a weak acid site concentration of less than 50 micromoles per gram. The alkylation reaction zone is operated at temperature and pressure conditions in which the benzene is in a gaseous phase to cause gas-phase alkylation of the aromatic substrate in the presence of the silicalite catalysts to produce an alkylation product. The alkylation product is then withdrawn from the reaction zone for separation and recovery.
摘要翻译： 通过在弱酸性位点浓度小于50微摩尔/克的单斜硅沸石催化剂上烷基化生产乙苯。 将含有苯和乙烯的原料施加到具有至少一个含有弱酸性位点浓度小于50微摩尔/克的单斜晶硅沸石催化剂的催化剂床的烷基化反应区。 烷基化反应区在其中苯处于气相的温度和压力条件下运行，以在硅沸石催化剂存在下引起芳族底物的气相烷基化以产生烷基化产物。 然后将烷基化产物从反应区取出以进行分离和回收。
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公开(公告)号：US08552238B2
公开(公告)日：2013-10-08
申请号：US13863722
申请日：2013-04-16
申请人： James R. Butler , Xin Xiao , James T. Merrill
发明人： James R. Butler , Xin Xiao , James T. Merrill
IPC分类号： C07C2/66
CPC分类号： C07C2/66 , B01J29/06 , B01J29/7057 , B01J2219/00006 , C07C6/126 , C07C7/12 , C07C15/073 , C07C2529/08 , C07C2529/70 , Y02P20/52 , Y02P20/584 , Y02P20/588 , C07C15/04
摘要： Alkylation systems and methods of minimizing alkylation catalyst regeneration are described herein. The alkylation systems generally include a preliminary alkylation system adapted to receive an input stream including an alkyl aromatic hydrocarbon and contact the input stream with a preliminary alkylation catalyst disposed therein to form a first output stream. The preliminary alkylation catalyst generally includes a zeolite catalyst having a SiO2/Al2O3 ratio of less than about 25. The alkylation systems further include a first alkylation system adapted to receive the first output stream and contact the first output stream with a first alkylation catalyst disposed therein and an alkylating agent to form a second output stream.
摘要翻译： 本文描述了使烷基化催化剂再生最小化的烷基化系统和方法。 烷基化系统通常包括适于接收包含烷基芳族烃的输入流并将输入流与设置在其中的预置烷基化催化剂接触以形成第一输出流的初步烷基化系统。 初步烷基化催化剂通常包括SiO 2 / Al 2 O 3比小于约25的沸石催化剂。烷基化系统还包括适于接收第一输出流并将第一输出流与置于其中的第一烷基化催化剂接触的第一烷基化系统 和烷基化剂以形成第二输出流。
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公开(公告)号：US07507385B2
公开(公告)日：2009-03-24
申请号：US10874887
申请日：2004-06-23
IPC分类号： B01J1/00
CPC分类号： C07C5/333 , B01F5/06 , B01J8/0292 , B01J8/0453 , B01J8/065 , B01J2208/00061 , B01J2208/00212 , B01J2208/00548 , B01J2208/0084 , B01J2208/00849 , Y10S585/922 , Y10S585/923 , Y10S585/924 , C07C15/44 , C07C15/46
摘要： Process for the catalytic dehydrogenation of a C2 or C3 alkyl aromatic in which a feedstock containing the alkyl aromatic and steam is supplied into the inlet of a tubular reactor containing a dehydrogenation catalyst. Within the reactor, the feedstock flows through at least a portion of the reactor along a spiral flow path extending longitudinally of the reactor. The resulting vinyl aromatic product is then recovered from a downstream or outlet section of the reactor. The spiral flow path through which the feedstock is passed is located at least adjacent the inlet side of the reactor and at least a portion of the spiral flow path contains a particulate dehydrogenation catalyst. The spiral flow path may extend throughout a major portion of the elongated tubular reactor and may contain a particulate dehydrogenation catalyst in a substantial portion there. The feedstock containing the alkyl aromatic and steam is supplied into a plurality of tubular reactors located within the interior of a dehydrogenation reactor vessel and is arranged in a parallel relationship in which the tubular reactors are spaced laterally from one another and from the interior wall of the reaction vessel.
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公开(公告)号：US06864399B2
公开(公告)日：2005-03-08
申请号：US10193792
申请日：2002-07-12
申请人： James T. Merrill , James R. Butler
发明人： James T. Merrill , James R. Butler
CPC分类号： B01J29/7007 , B01J2229/42 , C07C2/66 , C07C2521/08 , C07C2529/70 , Y02P20/544 , Y02P20/584 , C07C15/073
摘要： The alkylation of benzene-containing feedstock over a zeolite beta alkylation catalyst which is formulated with a silica binder and has an average regeneration coefficient of at least 95% for at least three regenerations. The alkylation reaction is carried out in the liquid phase or supercritical region with a C2-C4 alkylating agent, specifically ethylene. The catalyst exhibits a regeneration coefficient of at least 95% after ethylation of the benzene with ethylene at a benzene/ethylene mole ratio of less than 10. The ethylation of benzene occurs at an initial designated primary activity. The operation of the reaction zone is continued until the activity of the catalyst for the ethylation of benzene decreases by a value of at least 0.1% and not more 1% from the initial designated primary activity. The operation of the reaction for alkylation is terminated and a regeneration procedure is instituted in which the catalyst is regenerated in an oxidizing environment at an average temperature of no more than 500° C. At the conclusion of the regeneration procedure, the operation of the alkylation zone is reinstituted with the reaction zone again operated under conditions as described above followed by regeneration.
摘要翻译： 在沸石β烷基化催化剂上的含苯原料的烷基化，其用二氧化硅粘合剂配制，并且对至少三次再生具有至少95％的平均再生系数。 烷基化反应在液相或超临界区域用C2-C4烷基化剂，特别是乙烯进行。 苯与乙烯在苯/乙烯摩尔比小于10的乙醚化后，催化剂表现出至少95％的再生系数。苯的乙基化发生在初始指定的主要活性。 反应区的操作继续进行，直到苯的乙基化催化剂的活性从初始指定的主要活性降低至少0.1％且不超过1％的值。 终止烷基化反应的操作，并且在不超过500℃的平均温度下在氧化环境中再生催化剂的再生步骤。在再生过程结束时，烷基化操作 区域被重新配置，反应区域再次在如上所述的条件下操作，随后再生。
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公开(公告)号：US20130225888A1
公开(公告)日：2013-08-29
申请号：US13863722
申请日：2013-04-16
申请人： James R. Butler , Xin Xiao , James T. Merrill
发明人： James R. Butler , Xin Xiao , James T. Merrill
IPC分类号： C07C2/66
CPC分类号： C07C2/66 , B01J29/06 , B01J29/7057 , B01J2219/00006 , C07C6/126 , C07C7/12 , C07C15/073 , C07C2529/08 , C07C2529/70 , Y02P20/52 , Y02P20/584 , Y02P20/588 , C07C15/04
摘要： Alkylation systems and methods of minimizing alkylation catalyst regeneration are described herein. The alkylation systems generally include a preliminary alkylation system adapted to receive an input stream including an alkyl aromatic hydrocarbon and contact the input stream with a preliminary alkylation catalyst disposed therein to form a first output stream. The preliminary alkylation catalyst generally includes a zeolite catalyst having a SiO2/Al2O3 ratio of less than about 25. The alkylation systems further include a first alkylation system adapted to receive the first output stream and contact the first output stream with a first alkylation catalyst disposed therein and an alkylating agent to form a second output stream.
摘要翻译： 本文描述了使烷基化催化剂再生最小化的烷基化系统和方法。 烷基化系统通常包括适于接收包含烷基芳族烃的输入流并将输入流与设置在其中的预置烷基化催化剂接触以形成第一输出流的初步烷基化系统。 初步烷基化催化剂通常包括SiO 2 / Al 2 O 3比小于约25的沸石催化剂。烷基化系统还包括适于接收第一输出流并将第一输出流与置于其中的第一烷基化催化剂接触的第一烷基化系统 和烷基化剂以形成第二输出流。
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公开(公告)号：US07569741B2
公开(公告)日：2009-08-04
申请号：US11412244
申请日：2006-04-26
申请人： James R. Butler , James T. Merrill
发明人： James R. Butler , James T. Merrill
IPC分类号： C07C7/10
CPC分类号： C07C15/46 , C07C13/28 , C07C15/44 , C07C2601/16
摘要： Methods and systems for petrochemical feedstream purification are described herein. The methods generally include providing a petrochemical feedstock, wherein the petrochemical feedstock includes a concentration of polar impurities, contacting the petrochemical feedstock with a washing agent to remove at least a portion of the polar impurities therefrom, separating the washing agent from the petrochemical feedstock to form a purified feedstock and passing the purified feedstock to a petrochemical process. In one embodiment, the petrochemical feedstock includes benzene and the washing agent includes water.
摘要翻译： 本文描述了石油化学原料流净化的方法和系统。 所述方法通常包括提供石油化学原料，其中石油化学原料包括极性杂质的浓度，使石油化学原料与洗涤剂接触以从其中除去至少一部分极性杂质，从洗涤剂与石油化学原料分离形成 纯化的原料并将纯化的原料送至石化工艺。 在一个实施方案中，石油化学原料包括苯，洗涤剂包括水。
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