发明申请
US20090020454A1 Reduced elevation catalyst return line for a fluid catalytic cracking unit
有权
用于流化催化裂化装置的降低催化剂返回管路
- 专利标题： Reduced elevation catalyst return line for a fluid catalytic cracking unit
- 专利标题（中）： 用于流化催化裂化装置的降低催化剂返回管路
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申请号： US11879259申请日： 2007-07-17
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公开(公告)号： US20090020454A1公开(公告)日： 2009-01-22
- 发明人: Brian A. Cunningham , Christopher G. Smalley , Rathna P. Davuluri , Dana W. Nouri
- 申请人： Brian A. Cunningham , Christopher G. Smalley , Rathna P. Davuluri , Dana W. Nouri
- 主分类号： C10G11/00
- IPC分类号： C10G11/00 ; B01D53/00
摘要：
The present invention is an improved regenerated catalyst bend assembly for a fluid catalytic cracking unit. In a preferred embodiment, the reduced elevation (“RE-bend” or “REL-bend”) regenerated catalyst return line assembly of the present invention has an outlet elevation that is lower than the inlet elevation of the RE-bend or REL-bend regenerated catalyst return line assembly, and a process for utilizing the assembly in a fluid catalytic cracking unit. The present invention is especially useful in the modification of existing fluid catalytic cracking units to lower the elevation of the outlet of the regenerated catalyst return line assembly, thereby providing needed space to increase the fluid catalytic cracking reactor riser length.