发明名称 |
Use of lift gas in an FCC reactor riser |
摘要 |
A process for converting normally liquid hydrocarbons with an active fluid catalytic cracking catalyst which comprises: (a) passing a suspension of hot regenerated active fluid catalytic cracking catalyst in a lift gas comprising hydrocarbons including not more than 10 mole % C3 and heavier hydrocarbons through a horizontally oriented lower portion of a riser conversion zone at a velocity of from about 1.8 to less than 12.2 meters per second, and for a residence time from about 0.5 to about 15 seconds, the ratio of catalyst to hydrocarbon in said lift gas being greater than 80; and (b) introducing the normally liquid hydrocarbons into the upflowing suspension at a vertically orientated locus in the riser conversion zone downstream of the lower portion to form a catalyst-hydrocarbon mixture wherein the temperature and residence time are sufficient to effect the desired conversion. The process is particularly useful for the treatment of a heavy residual feedstock.
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申请公布号 |
US4541922(A) |
申请公布日期 |
1985.09.17 |
申请号 |
US19840651507 |
申请日期 |
1984.09.17 |
申请人 |
UOP INC. |
发明人 |
LOMAS, DAVID A.;HAMMERSHAIMB, HAROLD U. |
分类号 |
C10G11/18;(IPC1-7):C10G11/18 |
主分类号 |
C10G11/18 |
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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