发明名称 |
HYDROCARBON CRACKING WITH POSITIVE REACTOR TEMPERATURE GRADIENT |
摘要 |
The invention provides an improvement in processes for cracking hydrocarbons to prime olefins, ethylene and propylene, which comprises applying a positive temperature gradient across a catalyst contact zone. The temperature gradient may be uniform or stepwise, may be one reactor or a series of reactors so long as at least one down stream cracking zone is operated at a higher temperature than an upstream zone.
|
申请公布号 |
WO9856873(A1) |
申请公布日期 |
1998.12.17 |
申请号 |
WO1998US11875 |
申请日期 |
1998.06.08 |
申请人 |
EXXON CHEMICAL PATENTS INC. |
发明人 |
CHEN, TAN-JEN;ROWE, J., T. |
分类号 |
C07B61/00;C07C4/06;C07C11/04;C07C11/06;C10G11/00;C10G11/05;C10G51/02;(IPC1-7):C10G11/00 |
主分类号 |
C07B61/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|