发明名称 |
Reducing the temperature in a regeneration zone of a fluid catalytic cracking process. |
摘要 |
<p>A method for operating a fluid catalytic cracking unit comprising a regeneration zone and a reaction zone with a relatively reduced temperature in the regeneration zone while processing a high-coke-making hydrocarbon feedstock having a 50 volume percent distillation temperature greater than about 500 DEG F (260 DEG C) which method comprises contacting at conversion conditions the feedstock in a reaction zone with a fluidizable mixture of regenerated cracking catalyst and low-coke-make non-catalytic solid particles, comprising a refractory inorganic oxide, in a ratio of low-coke-make solid particles to cracking catalyst from about 1:100 to about 10:1, the low-coke-make solid particles having a surface area of less than about 5 m<2>/g and a coke making capability of less than about 0.2 weight percent coke in the ASTM standard method for testing cracking catalyst by microactivity (MAT); separating the resulting hydrocarbon products from the mixture of deactivated cracking catalyst and low-coke-make solid particles; recovering the hydrocarbon products; passing the mixture of cracking catalyst and low-coke-make solid particles to the regeneration zone for generation by removal of coke; and passing the resulting regenerated mixture of cracking catalyst and low-coke-make solid particles from the regeneration zone to the reaction zone to contact the feedstock as described above whereby the regeneration zone temperature is maintained at a reduced temperature as compared to an equivalent operation without the use of the low-cake-make solid particles while simultaneously not reducing the coke burning capacity of the regeneration zone or affecting the operation of the reaction zone.</p> |
申请公布号 |
EP0195129(A1) |
申请公布日期 |
1986.09.24 |
申请号 |
EP19850116235 |
申请日期 |
1985.12.19 |
申请人 |
UOP INC. |
发明人 |
LENGEMANN, ROBERT A.;THOMPSON, GREGORY J.;VICKERS, ANTHONY G.;MOTT, RAYMOND W. |
分类号 |
C10G11/00;C10G11/18;(IPC1-7):C10G11/14 |
主分类号 |
C10G11/00 |
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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