发明授权
- 专利标题: Process for continuously regenerating catalyst particles
- 专利标题(中): 连续再生催化剂颗粒的方法
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申请号: US09837788申请日: 2001-04-18
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公开(公告)号: US07045477B2公开(公告)日: 2006-05-16
- 发明人: Rendian Zhao , Zhihai Zhao , Jin Wang , Lanxin Zhang , Feng Shi , Jinhui Fu
- 申请人: Rendian Zhao , Zhihai Zhao , Jin Wang , Lanxin Zhang , Feng Shi , Jinhui Fu
- 申请人地址: CN CN
- 专利权人: China Petrochemical Corporation,Research Institute of Petroleum Processing, Sinopec
- 当前专利权人: China Petrochemical Corporation,Research Institute of Petroleum Processing, Sinopec
- 当前专利权人地址: CN CN
- 代理机构: Scully, Scott, Murphy & Presser
- 优先权: CN00105687 20000418
- 主分类号: B01J20/34
- IPC分类号: B01J20/34 ; B01J38/12 ; B01J38/42
摘要:
A process for continuously regenerating catalyst particles comprising: passing deactivated catalyst particles downwards in sequence through the first coke-burning zone, second coke-burning zone, oxychlorination zone, and calcination zone in the regenerator, wherein the catalyst particles are contacted with the regeneration gas from the second coke-burning zone, the supplemented dry air, and an inert gas in the first coke-burning zone; introducing an oxygen-containing regeneration gas from the second coke-burning zone into the regenerator, wherein said gas is contacted with the catalyst particles from the first coke burning zone; withdrawing the regeneration gas from the regenerator through the first coke-burning zone and, after the recovery system, recycling it to the second coke-burning zone. The regeneration gas may pass the catalyst bed in either a centrifugal or centripetal way. This process prevents the regeneration gas with a high water content from contacting the catalyst at a high temperature as in the conventional continuous coke-burning processes for regenerating catalyst particles and thereby reduces the decreasing rate of the specific surface area of the catalyst and prolongs its service life.
公开/授权文献
- US20010049328A1 Process for continuously regenerating catalyst particles 公开/授权日:2001-12-06