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公开(公告)号：US5315056A
公开(公告)日：1994-05-24
申请号：US837027
申请日：1992-02-14
CPC分类号： B01J38/04 , B01J23/90 , B01J23/92 , C07C5/3332 , Y02P20/584 , Y10S585/91
摘要： In a dehydrogenation process wherein catalyst is regenerated off-stream by use of heated air, at least two reactors are in the regeneration cycle, with regeneration air being heated to regeneration catalyst temperature for introduction into the first reactor, and thereafter being reheated to catalyst regeneration temperature and introduced into the second reactor. Such air may also be employed for preheating feed to the dehydrogenation reactor and/or for steam generation by heating such air to the temperature required for such procedure.
摘要翻译： 在催化剂通过使用加热的空气离心再生的脱氢方法中，至少两个反应器处于再生循环中，再生空气被加热至再生催化剂温度以引入第一反应器，然后再加热至催化剂再生 温度并引入第二反应器。 也可以使用这种空气来预热进入脱氢反应器的进料和/或通过将这种空气加热到这种程序所需的温度来产生蒸汽。
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公开(公告)号：US4773986A
公开(公告)日：1988-09-27
申请号：US943174
申请日：1986-12-18
CPC分类号： C10G67/02 , C10G55/04 , C10G67/049 , C10G9/007
摘要： The severity of a visbreaking operation is increased by treating product to remove a heavier phase in an amount of less than 15 weight percent and provide a remaining product having a Shell Hot Filtration number of less than 0.25.
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公开(公告)号：US4767521A
公开(公告)日：1988-08-30
申请号：US943175
申请日：1986-12-18
申请人： Robert J. Feldman , James M. Chen , Andrei Rhoe , Roger P. Van Driesen , C. Bertil Fogman , Donald P. Satchell
发明人： Robert J. Feldman , James M. Chen , Andrei Rhoe , Roger P. Van Driesen , C. Bertil Fogman , Donald P. Satchell
CPC分类号： C10G9/007 , C10G55/04 , C10G67/02 , C10G67/049
摘要： Prior to upgrading a viscous feed by visbreaking, at least a portion of the feed is treated to remove a heavy phase in specified amounts, whereby the severity of the visbreaking may be increased. The Shell Hot Filtration number of the visbreaking product is reduced by at least 75%, compared to visbreaking of untreated feed at some severity.
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公开(公告)号：US4846958A
公开(公告)日：1989-07-11
申请号：US199460
申请日：1988-05-26
CPC分类号： C10G55/04 , C10G67/02 , C10G67/049 , C10G9/007
摘要： The severity of a visbreaking operation is increased by treating product to remove a heavier phase in an amount of less than 15 weight percent and recycling treated product.
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