发明名称 |
Production of benzene, toluene and xylene (BTX) from FCC naphtha |
摘要 |
Cracked naphtha feeds such as FCC naphtha and coker naphtha are upgraded to produce chemical grade BTX (benzene, toluene, xylene with ethylbenzene) while co-poducing a low sulfur gasoline of relatively high octane number. The cracked, sulfur-containing naphtha is processed by hydrodesulfurization followed by treatment over an acidic catalyst, preferably a zeolite such as ZSM-5 or zeolite beta with a hydrogenation component, preferably 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 to permit a low sulfur gasoline of blending quality to be obtained with the BTX. The BTX can be extracted from the second stage effluent, preferably from a C6 - C8 fraction of this effluent. <IMAGE> |
申请公布号 |
EP0893487(B1) |
申请公布日期 |
2007.01.24 |
申请号 |
EP19970305631 |
申请日期 |
1997.07.25 |
申请人 |
EXXONMOBIL OIL CORPORATION |
发明人 |
ANGEVINE, PHILIP JAY;TIMKEN, HYE KYUNG CHO |
分类号 |
B01J29/40;C10G69/08;B01J29/70;C07C7/10;C07C15/04;C07C15/06;C07C15/08;C10G35/06;C10G45/08 |
主分类号 |
B01J29/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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