发明授权
- 专利标题: Method for reducing gasoline sulfur in fluid catalytic cracking
- 专利标题(中): 减少流化床催化裂化中汽油硫的方法
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申请号: US09399637申请日: 1999-09-20
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公开(公告)号: US06635169B1公开(公告)日: 2003-10-21
- 发明人: Nazeer A. Bhore , Arthur W. Chester , Ke Liu , Hye Kyung Cho Timken
- 申请人: Nazeer A. Bhore , Arthur W. Chester , Ke Liu , Hye Kyung Cho Timken
- 主分类号: C10G1102
- IPC分类号: C10G1102
摘要:
The sulfur content of liquid cracking products, especially the cracked gasoline, of a catalytic cracking process is reduced by the use of a catalyst having a product sulfur reduction component containing a metal component in an oxidation state greater than zero, wherein the average oxidation state of the metal component is increased by an oxidation step following conventional catalyst regeneration. The catalyst is normally a molecular sieve such as a zeolite Y, REY, USY, REUSY, Beta or ZSM-5. The metal component is normally a metal of Groups 5, 7, 8, 9, 12 or 13 of the periodic table, preferably vanadium or zinc. The sulfur reduction component may be a separate particle additive or part of an integrated cracking/sulfur reduction catalyst. A system for increasing the oxidation state of the metal component of a Gasoline Sulfur Reduction additive is also provided.