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    • 4. 发明申请
    • PROCESS FOR PRODUCING PARA-XYLENE
    • 生产对二甲苯的方法
    • WO2007127049A2
    • 2007-11-08
    • PCT/US2007008829
    • 2007-04-10
    • EXXONMOBIL CHEM PATENTS INCOU JOHN DI-YIHELMKE HAROLD W JRPORTER JOHN R
    • OU JOHN DI-YIHELMKE HAROLD W JRPORTER JOHN R
    • C07C5/2729C07C5/2732C07C7/13C07C15/08
    • A process for producing a PX-rich product comprises (a) separating a feedstock containing C 8 hydrocarbons to produce a C 8 hydrocarbons rich stream; (b) separating at least a first portion of the C 8 hydrocarbons rich stream to produce a first PX-rich stream and a first PX-depleted stream; (c) isomerizing at least a portion of the first PX-depleted stream to produce a first isomerized stream having a higher PX concentration than the first PX-depleted stream; (d) separating a second portion of the C 8 hydrocarbons rich stream and/or at least a portion of the first isomerized stream to produce a second PX-rich stream and a second PX-depleted stream; (e) isomerizing at least a portion of the second PX-depleted stream to produce a second isomerized stream having a higher PX concentration than the second PX-depleted stream; (f) recovering at least a portion of at least one of the first and second PX-rich streams as PX-rich product; and (g) supplying at least a portion of at least one of the first isomerized stream, the second isomerized stream, the first PX-rich stream, and the second PX-rich stream to the separating (a).
    • 生产富含PX的产物的方法包括(a)分离含有C 8/8烃的原料以产生C 8富含碳氢化合物的物流; (b)分离至少第一部分的富碳氢化合物物流以产生第一富含PX的物流和第一富含PX的物流; (c)使至少一部分所述第一贫含PX的物流异构化以产生具有比所述第一贫含量贫聚合物流高的PX浓度的第一异构化物流; (d)分离第二部分富碳氢化合物物流和/或至少一部分第一异构化物流以产生第二富含PX物流和第二富含PX的物流; (e)使至少一部分所述第二贫含PX的物流异构化以产生具有比所述第二贫含磷物流更高的PX浓度的第二异构化物流; (f)回收第一和第二富含PX的物流中的至少一个的至少一部分作为富含PX的产物; 和(g)将所述第一异构化流,所述第二异构化流,所述第一富含PX的流和所述第二富含PX的流中的至少一个的至少一部分供应至所述分离(a)。
    • 5. 发明申请
    • SEPARATION SYSTEM
    • 分离系统
    • WO2011126745A3
    • 2012-04-19
    • PCT/US2011029605
    • 2011-03-23
    • EXXONMOBIL CHEM PATENTS INCPORTER JOHN RPILLIOD DANA L
    • PORTER JOHN RPILLIOD DANA L
    • B01D53/08B01J21/00
    • B01D15/1835C07C7/13Y02P20/52C07C15/08
    • 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.
    • 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。
    • 7. 发明专利
    • PROCESS FOR PRODUCING PARA-XYLENE
    • MY145710A
    • 2012-03-30
    • MYPI20084273
    • 2007-04-10
    • EXXONMOBIL CHEM PATENTS INC
    • DI-YI OU JOHNHELMKE HAROLD W JRPORTER JOHN R
    • C07C5/27
    • A PROCESS FOR PRODUCING A PX-RICH PRODUCT COMPRISES (A) SEPARATING A FEEDSTOCK CONTAINING C8 HYDROCARBONS TO PRODUCE A C8 HYDROCARBONS RICH STREAM; (B) SEPARATING AT LEAST A FIRST PORTION OF THE C8 HYDROCARBONS RICH STREAM TO PRODUCE A FIRST PX-RICH STREAM AND A FIRST PX-DEPLETED STREAM; (C) ISOMERIZING AT LEAST A PORTION OF THE FIRST PX-DEPLETED STREAM TO PRODUCE A FIRST ISOMERIZED STREAM HAVING A HIGHER PX CONCENTRATION THAN THE FIRST PX-DEPLETED STREAM; (D) SEPARATING A SECOND PORTION OF THE C8 HYDROCARBONS RICH STREAM AND/OR AT LEAST A PORTION OF THE FIRST ISOMERIZED STREAM TO PRODUCE A SECOND PX-RICH STREAM AND A SECOND PX- DEPLETED STREAM; (E) ISOMERIZING AT LEAST A PORTION OF THE SECOND PX-DEPLETED STREAM TO PRODUCE A SECOND ISOMERIZED STREAM HAVING A HIGHER PX CONCENTRATION THAN THE SECOND PX-: DEPLETED STREAM; (F) RECOVERING AT LEAST A PORTION OF AT LEAST ONE OF THE FIRST AND SECOND PX-RICH STREAMS AS PX-RICH PRODUCT; AND (G) SUPPLYING AT LEAST A PORTION OF AT LEAST ONE OF THE FIRST ISOMERIZED STREAM, THE SECOND ISOMERIZED STREAM, THE FIRST PX-RICH STREAM, AND THE SECOND PX-RICH STREAM TO THE SEPARATING (A).
    • 9. 发明专利
    • BRPI0710917A2
    • 2012-02-22
    • BRPI0710917
    • 2007-04-10
    • EXXONMOBIL CHEM PATENTS INC
    • OU JOHN DI-YIHELMKE HAROLD WPORTER JOHN R
    • C07C5/27C07C7/13
    • A process for producing a PX-rich product comprises (a) separating a feedstock containing C8 hydrocarbons to produce a C8 hydrocarbons rich stream; (b) separating at least a first portion of the C8 hydrocarbons rich stream to produce a first PX-rich stream and a first PX-depleted stream; (c) isomerizing at least a portion of the first PX-depleted stream to produce a first isomerized stream having a higher PX concentration than the first PX-depleted stream; (d) separating a second portion of the C8 hydrocarbons rich stream and/or at least a portion of the first isomerized stream to produce a second PX-rich stream and a second PX-depleted stream; (e) isomerizing at least a portion of the second PX-depleted stream to produce a second isomerized stream having a higher PX concentration than the second PX-depleted stream; (f) recovering at least a portion of at least one of the first and second PX-rich streams as PX-rich product; and (g) supplying at least a portion of at least one of the first isomerized stream, the second isomerized stream, the first PX-rich stream, and the second PX-rich stream to the separating (a).
    • 10. 发明专利
    • PROCESS FOR PRODUCING PARA-XYLENE
    • CA2650529C
    • 2011-07-19
    • CA2650529
    • 2007-04-10
    • EXXONMOBIL CHEM PATENTS INC
    • OU JOHN DI-YIHELMKE HAROLD W JRPORTER JOHN R
    • C07C5/27C07C7/13
    • A process for producing a PX-rich product comprises (a) separating a feedstock containing C8 hydrocarbons to produce a C8 hydrocarbons rich stream; (b) separating at least a first portion of the C8 hydrocarbons rich stream to produce a first PX-rich stream and a first PX-depleted stream; (c) isomerizing at least a portion of the first PX-depleted stream to produce a first isomerized stream having a higher PX concentration than the first PX-depleted stream; (d) separating a second portion of the C8 hydrocarbons rich stream and/or at least a portion of the first isomerized stream to produce a second PX-rich stream and a second PX-depleted stream; (e) isomerizing at least a portion of the second PX-depleted stream to produce a second isomerized stream having a higher PX concentration than the second PX-depleted stream; (f) recovering at least a portion of at least one of the first and second PX-rich streams as PX-rich product; and (g) supplying at least a portion of at least one of the first isomerized stream, the second isomerized stream, the first PX-rich stream, and the second PX-rich stream to the separating (a).