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公开(公告)号：EP0783557B1
公开(公告)日：2004-08-11
申请号：EP95935228.7
申请日：1995-09-27
发明人： BUCHANAN, John, Scott , CHENG, Jane, Chi-Ya , HAAG, Werner, Otto , HARANDI, Mohsen, Nadimi , MORRISON, Roger, Allan , FREYMAN, David, George , MAZZONE, Dominick, Nicholas , ROULEAU, Norman, Joseph , SORENSEN, Charles, Mitchel , TIMKEN, Hye, Kyung, Cho , WARE, Robert, Adams
IPC分类号： C10G35/085 , C10G35/095 , C10G59/02 , C10G69/08
摘要： This is a process for upgrading a petroleum naphtha fraction. The naphtha (10) is subjected to reforming (16a, 16b, 16c) and the reformate is cascaded to a benzene and toluene synthesis zone (18) over a synthesis catalyst comprising a molecular sieve of low acid activity. The preferred molecular sieve is steamed ZSM-5. The benzene and toluene synthesis zone (18) is operated under conditions compatible with the conditions of the reformer such as pressures of above about 50 psig (446 kPa) and temperatures above about 800 DEG F (427 DEG C). In one aspect of the invention, the benzene and toluene synthesis catalyst includes a metal hydrogenation component such as cobalt, nickel, platinum and palladium. In one mode of operation, the benzene and toluene synthesis catalyst replaces at least a portion of the catalyst of the reformer. The process produces a product containing an increased proportion of benzene and toluene, and reduced proportion of C8 aromatics, particularly ethylbenzenes, as compared to the reformate.
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公开(公告)号：EP0722479B1
公开(公告)日：2002-08-07
申请号：EP94929833.5
申请日：1994-09-16
发明人： CHAWLA, Birbal , MAZZONE, Dominick, Nicholas , SARLI, Michael, Sebastian , SHIH, Stuart, Shan-San , TIMKEN, Hye, Kyung, C.
CPC分类号： C10G35/095 , C10G69/08
摘要： Low sulfur gasoline of relatively high octane number is produced from a cracked, sulfur-containing olefinic naphthas by hydrodesulfurization followed by treatment over an acidic catalyst comprising zeolite beta with a metal hydrogenation component, preferably a mild hydrogenation component such as molybdenum. The treatment over the acidic catalyst in the second step restores the octane loss which takes place as a result of the hydrogenative treatment and results in a low sulfur gasoline product with an octane number comparable to that of the feed naphtha. In favorable cases, using feeds of extended end point such as heavy naphthas with 95 percent points above about 380 °F (about 193 °C), improvements in both product octane and yield relative to the feed may be obtained.
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公开(公告)号：EP1062191B1
公开(公告)日：2003-07-23
申请号：EP98957664.0
申请日：1998-11-06
CPC分类号： C07C15/073
摘要： There is provided a process for producing alkylaromatics (160), especially ethylbenzene and cumene, wherein a feedstock (102, 112)is first fed to a transalkylation zone (100) and the entire effluent (120) of the transalkylation zone (100) is then cascaded directly into an alkylation zone (130) along with an olefinic alkylating agent (180), especially ethylene or propylene.
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公开(公告)号：EP1066260B1
公开(公告)日：2004-06-16
申请号：EP98964189.9
申请日：1998-12-21
IPC分类号： C07D213/06 , C07D213/08 , C07D213/14
CPC分类号： C07C211/00 , C07B61/00 , C07D213/06 , C07D213/08 , C07D213/10 , C07D213/14
摘要： A process for producing pyridine or picoline compounds, comprises the steps: a) reacting a reactant feedstream comprising ammonia and at least one C1-5 carbonyl reactant in the presence of a molecular sieve catalyst to produce a primary product stream comprising pyridine or picoline products and polyalkylpyridines; b) isolating from the primary product stream a product fraction comprising pyridine or picoline products, and a polyalkylpyridine fraction comprising polyalkylpyridines; and c) contacting the polyalkylpyridine fraction with a molecular sieve catalyst to produce a secondary product stream comprising pyridine or picoline products, preferably by recycling the polyalkylpyridine fraction back to step (a).
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