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1. 发明授权

US10059643B2 Process and apparatus for the production of para-xylene 有权
公开(公告)号：US10059643B2
公开(公告)日：2018-08-28
申请号：US15345990
申请日：2016-11-08
申请人： ExxonMobil Chemical Patents Inc.
发明人： Timothy P. Bender , John R. Porter , Dana L. Pilliod
IPC分类号： B01J19/00 , B01J19/24 , B01D15/18 , C07C5/27
CPC分类号： C07C5/2729 , B01D15/185 , B01J19/2445 , B01J2219/24 , C07C5/2737 , C07C5/2767 , C07C5/2775 , C07C15/08
摘要： A process for producing para-xylene (PX) comprises supplying a hydrocarbon feed comprising xylenes and ethylbenzene (EB) to a PX recovery unit, where a PX-rich stream and at least one PX-depleted stream are recovered from the feed. The PX-depleted stream is then separated into an EB-rich stream and an EB-depleted stream in a divided wall column. The EB-depleted stream is then isomerized under at least partial liquid phase conditions to produce a first isomerized stream having a higher PX concentration than the PX-depleted stream, and the EB-rich stream is isomerized under at least partial vapor phase conditions to produce a second isomerized stream having a higher PX concentration than the PX-depleted stream. The first and second isomerized streams are then recycled to the PX recovery unit to recover additional PX and the process is repeated to define a so-called xylene isomerization loop.

2. 发明授权

US09517979B2 Process and apparatus for the production of para-xylene 有权
标题翻译：用于生产对二甲苯的方法和设备
公开(公告)号：US09517979B2
公开(公告)日：2016-12-13
申请号：US14969298
申请日：2015-12-15
申请人： ExxonMobil Chemical Patents Inc.
发明人： Timothy P. Bender , John R. Porter , Dana L. Pilliod
IPC分类号： C07C5/27 , B01J19/24
CPC分类号： C07C5/2729 , B01D15/185 , B01J19/2445 , B01J2219/24 , C07C5/2737 , C07C5/2767 , C07C5/2775 , C07C15/08
摘要： A process for producing para-xylene (PX) comprises supplying a hydrocarbon feed comprising xylenes and ethylbenzene (EB) to a PX recovery unit, where a PX-rich stream and at least one PX-depleted stream are recovered from the feed. The PX-depleted stream is then separated into an EB-rich stream and an EB-depleted stream in a divided wall column. The EB-depleted stream is then isomerized under at least partial liquid phase conditions to produce a first isomerized stream having a higher PX concentration than the PX-depleted stream, and the EB-rich stream is isomerized under at least partial vapor phase conditions to produce a second isomerized stream having a higher PX concentration than the PX-depleted stream. The first and second isomerized streams are then recycled to the PX recovery unit to recover additional PX and the process is repeated to define a so-called xylene isomerization loop.
摘要翻译：制备对二甲苯（PX）的方法包括将包含二甲苯和乙苯（EB）的烃进料供应到PX回收单元，其中富含PX的料流和至少一种不含PX的料流从进料中回收。然后将PX-贫化的物流分离成富EB的流和分离壁塔中的EB-贫化的流。然后将EB-贫化的物流在至少部分液相条件下异构化，以产生具有比PX贫化物流更高的PX浓度的第一异构化物流，并且在至少部分气相条件下使富含EB的物流异构化以产生具有比PX贫化物流更高的PX浓度的第二异构化物流。然后将第一和第二异构化物流再循环到PX回收单元以回收另外的PX，并重复该过程以定义所谓的二甲苯异构化回路。

3. 发明授权

US09422208B2 Treatment of aromatic hydrocarbon stream 有权
标题翻译：芳烃流的处理
公开(公告)号：US09422208B2
公开(公告)日：2016-08-23
申请号：US14221764
申请日：2014-03-21
申请人： ExxonMobil Chemical Patents Inc.
发明人： Timothy P. Bender , Chong Jhoo Wang , Glenn A. Heeter , Dana L. Pilliod
IPC分类号： C07C7/13 , C07C7/14 , C07C2/86
CPC分类号： C07C2/864 , C07C2/865 , C07C7/13 , C07C7/14 , C07C2529/70 , C07C15/08
摘要： The invention is directed to a process of contacting at least one zeolite, selected from the MWW family of zeolites, with an aromatic hydrocarbon stream in a system comprising at least one reactor containing the at least one zeolite, wherein the conditions in the reactor are adjusted in response to at least one measurement of the system so as to preferentially increase oxygenate removal or to preferentially increase olefin removal.
摘要翻译：本发明涉及使至少一种选自MWW沸石族沸石的沸石与包含至少一个含有至少一种沸石的反应器的系统中的芳族烃物流接触的方法，其中反应器中的条件被调节响应于系统的至少一次测量，以便优先增加除氧化合物或优先增加除去烯烃。

4. 发明申请

US20140021117A1 Separation System 有权
标题翻译：分离系统
公开(公告)号：US20140021117A1
公开(公告)日：2014-01-23
申请号：US14036028
申请日：2013-09-25
申请人： ExxonMobil Chemical Patents Inc.
发明人： John R. Porter , Dana L. Pilliod
IPC分类号： B01D15/18
CPC分类号： B01D15/1835 , C07C7/13 , Y02P20/52 , C07C15/08
摘要： A process for separating a product from a multicomponent feedstream to an adsorption apparatus or system is described. The apparatus or system may comprise a moving-bed or a simulated moving-bed adsorption means. The product comprises at least one organic compound, such as an aryl compound with alkyl substitutes. In embodiments the conduits used to supply the feedstream to the apparatus or system are flushed with media of multiple grades. The improvement is more efficient use of the desorbent. In embodiments the process achieves improvements in one or more of efficiency of adsorption separation, capacity of adsorption apparatus systems, and purity of product attainable by adsorption process.
摘要翻译：描述了将产物从多组分进料流分离到吸附装置或系统的方法。该装置或系统可包括移动床或模拟移动床吸附装置。产物包含至少一种有机化合物，例如具有烷基取代基的芳基化合物。在实施例中，用于将进料流供应到设备或系统的管道用多个等级的介质冲洗。改进是更有效地使用解吸剂。在实施方案中，该方法实现了吸附分离效率，吸附装置系统的容量和通过吸附过程可获得的产物的纯度中的一种或多种的改进。

5. 发明申请

US20180002252A1 Processes for Recovering Paraxylene 审中-公开
公开(公告)号：US20180002252A1
公开(公告)日：2018-01-04
申请号：US15600494
申请日：2017-05-19
申请人： ExxonMobil Chemical Patents Inc.
发明人： Michael Salciccioli , Gaurav Agrawal , Michael W. Weber , Dana L. Pilliod , Catherine M. Dorsi
IPC分类号： C07C5/13 , C07C7/11 , C07B63/04 , C07C15/08 , C07C7/13 , C07C2601/16
CPC分类号： C07C5/13 , B01D15/1828 , B01D15/185 , C07B63/04 , C07C5/2708 , C07C5/277 , C07C7/005 , C07C7/11 , C07C7/12 , C07C7/13 , C07C15/08 , C07C2601/16
摘要： Disclosed is a process for recovering paraxylene in which a first simulated moving bed adsorption unit is used to produce two extract streams—one rich in paraxylene and a paraxylene-rich extract stream that is lean in ethylbenzene and an ethylbenzene-rich extract stream that is lean in paraxylene- and a paraxylene-depleted raffinate stream. A significant amount of the ethylbenzene is removed in the ethylbenzene-rich extract stream (at least enough to limit buildup in the isomerization loop), so the paraxylene-depleted raffinate stream may be isomerized in the liquid phase. Avoiding vapor phase isomerization saves energy and capital, as liquid phase isomerization requires less energy and capital than the vapor phase isomerization process due to the requirement of vaporizing the paraxylene-depleted stream and the use of hydrogen, which requires an energy and capital intensive hydrogen recycle loop.

6. 发明授权

US09517980B2 Process and apparatus for the production of para-xylene 有权
标题翻译：用于生产对二甲苯的方法和设备
公开(公告)号：US09517980B2
公开(公告)日：2016-12-13
申请号：US14969327
申请日：2015-12-15
申请人： ExxonMobil Chemical Patents Inc.
发明人： Robert G. Tinger , Dana L. Pilliod , Michel Molinier
IPC分类号： C07C5/22 , C07C4/12 , C07C7/12 , C07C5/27 , B01J19/24 , B01D3/14 , B01D15/18
CPC分类号： C07C5/2767 , B01D3/14 , B01D3/141 , B01D3/143 , B01D15/185 , B01J19/2445 , B01J2219/00006 , B01J2219/24 , C07C5/2729
摘要： The present invention is an improved process and apparatus for producing para-xylene, particularly with respect to a process that involves the methylation of toluene and/or benzene to selectively produce para-xylene, wherein streams having differing amounts of ethylbenzene are separately treated in the recovery of para-xylene. A first hydrocarbon feed comprising xylenes and ethylbenzene is provided to a first para-xylene adsorption section, and a second hydrocarbon feed comprising xylenes and less EB than the first hydrocarbon feed is provided to a second para-xylene adsorption section. Segregating the feeds with differing ethylbenzene contents increases the overall efficiency of the adsorption of para-xylene by the adsorption units. Efficiency and energy savings may be further improved by subjecting the lower-content ethylbenzene stream to liquid phase isomerization.
摘要翻译：本发明是用于生产对二甲苯的改进方法和装置，特别是涉及甲苯和/或苯甲基化以选择性地生产对二甲苯的方法，其中具有不同量的乙苯的物流在回收对二甲苯。向第二对二甲苯吸附段提供包含二甲苯和乙苯的第一烃进料，并将包含二甲苯和比第一烃进料少的EB的第二烃进料提供给第二对二甲苯吸附段。用不同的乙苯含量分离进料会增加吸附单元吸附对二甲苯的总体效率。通过使较低含量的乙苯流进行液相异构化，可以进一步提高效率和能量节省。

7. 发明申请

US20160318827A1 Process and Apparatus for the Production of Para-xylene 有权
标题翻译：对二甲苯生产工艺和设备
公开(公告)号：US20160318827A1
公开(公告)日：2016-11-03
申请号：US14969327
申请日：2015-12-15
申请人： ExxonMobil Chemical Patents Inc.
发明人： Robert G. Tinger , Dana L. Pilliod , Michel Molinier
IPC分类号： C07C5/27 , B01D3/14 , B01D15/18 , B01J19/24
CPC分类号： C07C5/2767 , B01D3/14 , B01D3/141 , B01D3/143 , B01D15/185 , B01J19/2445 , B01J2219/00006 , B01J2219/24 , C07C5/2729
摘要： The present invention is an improved process and apparatus for producing para-xylene, particularly with respect to a process that involves the methylation of toluene and/or benzene to selectively produce para-xylene, wherein streams having differing amounts of ethylbenzene are separately treated in the recovery of para-xylene. A first hydrocarbon feed comprising xylenes and ethylbenzene is provided to a first para-xylene adsorption section, and a second hydrocarbon feed comprising xylenes and less EB than the first hydrocarbon feed is provided to a second para-xylene adsorption section. Segregating the feeds with differing ethylbenzene contents increases the overall efficiency of the adsorption of para-xylene by the adsorption units. Efficiency and energy savings may be further improved by subjecting the lower-content ethylbenzene stream to liquid phase isomerization.
摘要翻译：本发明是用于生产对二甲苯的改进方法和装置，特别是涉及甲苯和/或苯甲基化以选择性地生产对二甲苯的方法，其中具有不同量的乙苯的物流在回收对二甲苯。向第二对二甲苯吸附段提供包含二甲苯和乙苯的第一烃进料，并将包含二甲苯和比第一烃进料少的EB的第二烃进料提供给第二对二甲苯吸附段。用不同的乙苯含量分离进料会增加吸附单元吸附对二甲苯的总体效率。通过使较低含量的乙苯流进行液相异构化，可以进一步提高效率和能量节省。

8. 发明申请

US20140336436A1 Treatment of Aromatic Hydrocarbon Stream 有权
标题翻译：芳烃流的处理
公开(公告)号：US20140336436A1
公开(公告)日：2014-11-13
申请号：US14221764
申请日：2014-03-21
申请人： ExxonMobil Chemical Patents Inc.
发明人： Timothy P. Bender , Chong Jhoo Wang , Glenn A. Heeter , Dana L. Pilliod
IPC分类号： C07C7/12
CPC分类号： C07C2/864 , C07C2/865 , C07C7/13 , C07C7/14 , C07C2529/70 , C07C15/08
摘要： The invention is directed to a process of contacting at least one zeolite, selected from the MWW family of zeolites, with an aromatic hydrocarbon stream in a system comprising at least one reactor containing the at least one zeolite, wherein the conditions in the reactor are adjusted in response to at least one measurement of the system so as to preferentially increase oxygenate removal or to preferentially increase olefin removal.
摘要翻译：本发明涉及使至少一种选自MWW沸石族沸石的沸石与包含至少一个含有至少一种沸石的反应器的系统中的芳族烃物流接触的方法，其中反应器中的条件被调节响应于系统的至少一次测量，以便优先增加除氧化合物或优先增加除去烯烃。

9. 发明授权

US10392324B2 Xylene separation process 有权
公开(公告)号：US10392324B2
公开(公告)日：2019-08-27
申请号：US16097734
申请日：2017-05-17
申请人： EXXONMOBIL CHEMICAL PATENTS INC. , GEORGIA TECH RESEARCH CORPORATION
发明人： Michael W. Weber , Yoshiaki Kawajiri , Michael Salciccioli , John R. Porter , Gaurav Agrawal , Dana L. Pilliod , Siwei Guo , Jason Bentley
IPC分类号： C07C7/13 , B01D53/08 , C07C15/08 , C07C15/073 , B01J20/16
摘要： A process to separate paraxylene from a mixture of paraxylene, metaxylene, orthoxylene, and ethylbenzene in a commercial simulated moving bed apparatus in a reduced number of beds is provided, allowing an additional separation to be conducted in the remaining beds. This additional separation may separate another xylene isomer, ethylbenzene, or a non-aromatic C8+ hydrocarbon from the raffinate stream produced by the first separation. A PowerFeed process is used to recover paraxylene in a first adsorption zone containing 8-16 beds of a conventional 24-bed simulated moving bed adsorption apparatus, and then a second separation may be conducted in a second adsorption zone containing the remaining beds.

10. 发明授权

US09896398B2 Xylene separation process and apparatus 有权
公开(公告)号：US09896398B2
公开(公告)日：2018-02-20
申请号：US15262648
申请日：2016-09-12
申请人： ExxonMobil Chemical Patents Inc.
发明人： John R. Porter , Timothy P. Bender , Dana L. Pilliod
IPC分类号： C07C7/12 , B01D15/18
CPC分类号： C07C7/12 , B01D15/1807 , B01D15/1828 , B01D15/1835 , B01D15/1842 , C07C15/08
摘要： A simulated moving bed process using dual, parallel rotary valves configured or plumbed to be operated independently in which the step times of the rotary valves are staggered. In embodiments, the second rotary valve is programmed to step about halfway through the step time of the first rotary valve. Staggering the step time of the parallel rotary valves, rather than utilizing simultaneous stepping, results in increased net composite paraxylene concentration of the extract stream, allowing for increased capacity of the simulated moving bed process and/or reduced energy consumption.

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