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公开(公告)号:US5648585A
公开(公告)日:1997-07-15
申请号:US175010
申请日:1993-12-29
申请人: Brendan Dermot Murray , Bruce Herman Charles Winquist , Donald Henry Powers , Jon Barin Wise , Richard Brian Halsey
发明人: Brendan Dermot Murray , Bruce Herman Charles Winquist , Donald Henry Powers , Jon Barin Wise , Richard Brian Halsey
IPC分类号: B01J29/67 , A61K8/02 , A61K8/19 , A61K8/23 , A61K8/30 , A61K8/365 , A61K8/41 , A61K8/42 , A61K8/55 , A61K8/60 , A61K8/64 , A61K8/72 , A61K8/73 , A61K8/88 , A61K8/89 , A61K8/92 , A61K8/97 , A61K8/98 , A61K31/715 , A61P17/02 , A61Q5/02 , A61Q5/12 , A61Q19/00 , A61Q19/08 , A61Q19/10 , B01J29/66 , B01J29/90 , C07C5/27 , C07C11/02 , C07C11/08 , C08B37/08 , C07C5/22
CPC分类号: A61K8/736 , A61Q19/00 , B01J29/90 , C07C5/2775 , C08B37/003 , A61K2800/5426 , A61Q19/08 , Y02P20/584
摘要: This invention relates to a process in which a linear olefin is converted under isomerizing conditions to its corresponding methyl branched isoolefin by contact at a temperature of from 200.degree. C. to 650.degree. C. with an isomerizing catalyst comprising (i) at least one zeolite having only in one dimension a pore structure having a pore size small enough to retard by-product dimerization and coke formation and large enough to permit entry of the linear olefin and allow formation of the methyl branched isoolefin, (ii) an alumina binder and (iii) up to about 15% by weight of coke oxidation-promoting metal. After a period of operation, when sufficient coke has deposited on the catalyst in an amount to significantly reduce the activity of the catalyst, the catalyst is stripped of hydrocarbon and then contacted at elevated temperature with an oxygen-containing gas for a sufficient time to burn off the coke, i.e., to regenerate the catalyst at a temperature of less than about 565.degree. C. After regeneration, the isomerization process is continued. The use of palladium and/or platinum as the coke oxidation-promoting metal is particularly desirable.
摘要翻译: 本发明涉及一种方法,其中线性烯烃在异构化条件下通过在200℃至650℃的温度下与异构化催化剂接触而转化成相应的甲基支链异烯烃,所述异构化催化剂包含(i)至少一种沸石 仅在一个维度上具有孔径足够小以阻止副产物二聚和焦炭形成并且足够大以允许线性烯烃进入并允许形成甲基支链异烯烃的孔结构,(ii)氧化铝粘合剂和( iii)高达约15重量%的焦炭氧化促进金属。 经过一段时间的操作后,当催化剂上沉积足够的焦炭以显着降低催化剂活性的量时,将催化剂汽提出烃,然后在高温下与含氧气体接触足够的时间燃烧 即,在低于约565℃的温度下再生催化剂。再生后,继续进行异构化处理。 使用钯和/或铂作为焦炭氧化促进金属是特别理想的。