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1. 发明授权

US08030533B2 Method for combined production of paraxylene and benzene with improved productivity 有权
标题翻译：联合生产对二甲苯和苯的方法，提高生产率
公开(公告)号：US08030533B2
公开(公告)日：2011-10-04
申请号：US11908704
申请日：2006-03-14
申请人： Gerard Hotier , Kim Seo Il
发明人： Gerard Hotier , Kim Seo Il
IPC分类号： C07C4/24 , C07C7/12 , C07C7/14
CPC分类号： C07C6/123 , C07C7/005 , C07C15/04 , C07C15/08
摘要： A process for the combined production of para-xylene and benzene comprises: separating a first feed, by adsorption in a simulated moving bed SMB, to produce an extract E rich in para-xylene and at least one raffinate R which is depleted in para-xylene; converting a secondary feed of toluene by selective disproportionation to produce benzene and xylenes; a) at the start of the cycle, producing a supplemental quantity of para-xylene in a crystallization unit supplied with the xylenes from the disproportionation; b) at the end of the cycle, when the adsorbant has aged: dividing the distilled extract E into a first fraction Ea and a complementary second fraction Eb; replacing the feed to the initial crystallization by the stream Ea; and recycling the xylenes from the disproportionation to the SMB. The invention enables para-xylene and benzene production to be maintained despite ageing of the SMB absorbent.
摘要翻译：组合生产对二甲苯和苯的方法包括：通过在模拟移动床SMB中的吸附分离第一种进料，以产生富含对二甲苯的萃取物E和至少一种在对二甲苯中耗尽的萃余液R，二甲苯通过选择性歧化来转化甲苯的二次进料以产生苯和二甲苯; a）在循环开始时，在由歧化提供二甲苯的结晶单元中产生补充量的对二甲苯; b）在循环结束时，当吸附剂老化时：将蒸馏的提取物E分成第一级分Ea和互补的第二级分Eb; 用流Ea代替原料进行初始结晶; 并将二甲苯从不成比例回收给SMB。尽管SMB吸收剂的老化，本发明可以维持对二甲苯和苯的生产。

2. 发明申请

US20090069612A1 METHOD FOR COMBINED PRODUCTION OF PARAXYLENE AND BENZENE WITH IMPROVED PRODUCTIVITY 有权
标题翻译：用于联合生产具有提高生产力的二苯并苯和苯的方法
公开(公告)号：US20090069612A1
公开(公告)日：2009-03-12
申请号：US11908704
申请日：2006-03-14
申请人： Gerard Hotier , Kim Seo Il
发明人： Gerard Hotier , Kim Seo Il
IPC分类号： C07C5/52
CPC分类号： C07C6/123 , C07C7/005 , C07C15/04 , C07C15/08
摘要： A process for the combined production of para-xylene and benzene comprises: separating a first feed, by adsorption in a simulated moving bed SMB, to produce an extract E rich in para-xylene and at least one raffinate R which is depleted in para-xylene; converting a secondary feed of toluene by selective disproportionation to produce benzene and xylenes; a) at the start of the cycle, producing a supplemental quantity of para-xylene in a crystallization unit supplied with the xylenes from the disproportionation; b) at the end of the cycle, when the adsorbant has aged: dividing the distilled extract E into a first fraction Ea and a complementary second fraction Eb; replacing the feed to the initial crystallization by the stream Ea; and recycling the xylenes from the disproportionation to the SMB. The invention enables para-xylene and benzene production to be maintained despite ageing of the SMB absorbent.
摘要翻译：组合生产对二甲苯和苯的方法包括：通过在模拟移动床SMB中的吸附分离第一种进料，以产生富含对二甲苯的萃取物E和至少一种在对二甲苯中耗尽的萃余液R，二甲苯通过选择性歧化来转化甲苯的二次进料以产生苯和二甲苯; a）在循环开始时，在由歧化提供二甲苯的结晶单元中产生补充量的对二甲苯; b）在循环结束时，当吸附剂老化时：将蒸馏的提取物E分成第一级分Ea和互补的第二级分Eb; 用流Ea代替原料进行初始结晶; 并将二甲苯从不成比例回收给SMB。尽管SMB吸收剂的老化，本发明可以维持对二甲苯和苯的生产。

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