Method for loading and unloading a catalyst without halting the

Details Method for loading and unloading a catalyst without halting the Method for loading and unloading a catalyst without halting the

1998-02-11

2000-03-14

Griffin, Walter D.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

203 29, 203DIG6, 422191, 422219, 585922, 585923, B01J 804

Patent

active

060368489

ABSTRACT:
The catalyst inside a catalytic reaction column is replaced while running the catalytic reaction by diverting a basically monophase fluid to keep it from passing through the catalyst, evacuating from the column the catalyst that has lost at least a portion of its properties, introducing into the column a quantity of catalyst that is approximately equal to the quantity of catalyst that was evacuated from the column, and restoring the circulation of the basically monophase fluid through the catalyst.

REFERENCES:
patent: 4502946 (1985-03-01), Pronk
patent: 4975036 (1990-12-01), Jagannathan
patent: 5133942 (1992-07-01), Jones
patent: 5198196 (1993-03-01), Jones, Jr. et al.
patent: 5338517 (1994-08-01), Evans, III et al.
patent: 5449501 (1995-09-01), Luebke et al.
patent: 5510089 (1996-04-01), Jones
patent: 5523061 (1996-06-01), Hao et al.

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