Title:
【発明の名称】流動床による炭化水素処理における磁性物質の添加
Document Type and Number:
Japanese Patent JPH05504588
Kind Code:
A
Abstract:
By continuously or intermittently adding amounts of magnetically active moieties, e.g. iron compounds, over time so that the moiety deposits on a catalyst or sorbent in a fluid catalytic cracker or similar circulating hydrocarbon conversion unit, older catalyst, being more magnetic, can be readily separated from catalyst which has been in the system a shorter time. Separation is readily accomplished by passing the catalyst and/or sorbent through a magnetic field and discarding the more magnetic 50% by wt. or more preferably 20% by wt., while recycling the remainder back to the hydrocarbon conversion unit.
Inventors:
Hettinger, William Pea, Jr.
Application Number:
JP50484491A
Publication Date:
July 15, 1993
Filing Date:
January 23, 1991
Export Citation:
Assignee:
Ashland Oil Incorporated
International Classes:
B01J8/42; B01J38/00; C10G9/32; C10G11/18; B01J8/24; C10G32/02; (IPC1-7): C10G11/18; C10G9/32; B01J38/00; B01J8/24
Attorney, Agent or Firm:
Kyozo Yuasa (6 people outside)