发明名称 |
Method for the injection of catalyst in a fluid catalytic cracking process, especially for heavy feedstocks |
摘要 |
The invention relates to a method and apparatus for injecting and conditioning regenerated catalyst particles at the base of a catalytic cracking reactor/elevator below the zone where the feedstock to be cracked is injected to give better uniformity of treatment and control of the effective C/O ratio. A first fluid is injected at a low rate into the reactor below the level where the catalyst particles coming from the regenerator are introduced so as to form a dense phase fluidized bed, and a second fluid is injected at a higher rate substantially above the zone where the catalyst particles coming from the regenerator enter so as to form a homogenized dilute phase fluidized bed of catalyst prior to subsequent contact with the feedstock to be treated.
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申请公布号 |
US4832825(A) |
申请公布日期 |
1989.05.23 |
申请号 |
US19860827333 |
申请日期 |
1986.02.07 |
申请人 |
COMPAGNIE DE RAFFINAGE ET DE DISTRIBUTION TOTAL FRANCE |
发明人 |
MAULEON, JEAN-LOUIS;DEMAR, MICHEL;JEAN-BERNARD, SIGAUD |
分类号 |
B01J8/00;C10G11/18 |
主分类号 |
B01J8/00 |
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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