公开(公告)号：US20090326309A1

公开(公告)日：2009-12-31

申请号：US12165390

申请日：2008-06-30

申请人： Jim PRIEGNITZ ,  Darryl JOHNSON ,  Linda CHENG ,  Scott COMMISSARIS ,  Jack HURST ,  Mike QUICK ,  Santi KULPRATHIPANJA

发明人： Jim PRIEGNITZ ,  Darryl JOHNSON ,  Linda CHENG ,  Scott COMMISSARIS ,  Jack HURST ,  Mike QUICK ,  Santi KULPRATHIPANJA

IPC分类号： C07C7/12

CPC分类号： B01J20/28007 ,  B01J20/183 ,  B01J20/186 ,  B01J20/28004 ,  B01J2220/42 ,  B82Y30/00 ,  C07C7/13 ,  C07C15/08

摘要： Adsorbents and methods for the adsorptive separation of para-xylene from a mixture containing at least one other C8 aromatic hydrocarbon (e.g., a mixture of ortho-xylene, meta-xylene, para-xylene, and ethylbenzene) are described. Suitable binderless adsorbents (e.g., formulated with the substantial absence of an amorphous material that normally reduces selective pore volume), particularly those with a water content from about 3% to about 5.5% by weight, improve capacity and/or mass transfer. These properties are especially advantageous for improving productivity in low temperature, low cycle time adsorptive separation operations in a simulated moving bed mode.

摘要翻译： 描述了从含有至少一种其它C 8芳族烃（例如邻二甲苯，间二甲苯，对二甲苯和乙苯的混合物）的混合物吸附分离对二甲苯的吸附剂和方法。 合适的无粘合剂吸附剂（例如，基本上不存在通常降低选择孔体积的无定形材料配制），特别是含水量为约3重量％至约5.5重量％的那些，改善了容量和/或传质。 这些性能对于提高模拟移动床模式中的低温，低循环时间吸附分离操作的生产率是特别有利的。

公开(公告)号：US20100076243A1

公开(公告)日：2010-03-25

申请号：US12165359

申请日：2008-09-22

申请人： Linda Shi CHENG ,  Jack HURST

发明人： Linda Shi CHENG ,  Jack HURST

IPC分类号： C07C7/12 ,  B01J20/18

CPC分类号： B01J20/28004 ,  B01J20/18 ,  B01J2220/56 ,  C07C7/13 ,  C07C15/08

摘要： Adsorbents and methods for the adsorptive separation of para-xylene from a mixture containing at least one other C8 aromatic hydrocarbon (e.g., a mixture of ortho-xylene, meta-xylene, para-xylene, and ethylbenzene) are described. Suitable adsorbents comprise small-crystallite-size zeolite X having an average crystallite size of less than 1.8 microns. The adsorbents may be binderless (e.g., formulated with the substantial absence of an amorphous material that normally reduces selective pore volume) to further improve capacity and mass transfer. These properties are especially advantageous for improving productivity in low temperature, low cycle time adsorptive separation operations in a simulated moving bed mode.

摘要翻译： 描述了从含有至少一种其它C 8芳族烃（例如邻二甲苯，间二甲苯，对二甲苯和乙苯的混合物）的混合物吸附分离对二甲苯的吸附剂和方法。 合适的吸附剂包括平均微晶尺寸小于1.8微米的小晶粒尺寸的沸石X. 吸附剂可以是无粘合剂的（例如，基本上不存在通常降低选择孔体积的无定形材料配制），以进一步提高容量和传质。 这些性能对于提高模拟移动床模式中的低温，低循环时间吸附分离操作的生产率是特别有利的。