Process for recovering catalyst

Details Process for recovering catalyst Process for recovering catalyst

1998-07-20

2000-12-19

Lorin, Francis J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

B32B 312

Patent

active

061625248

ABSTRACT:
The present invention relates to a method of removing a coating, such as a spent catalyst coating, from a carrier such as a metal plate or a honeycomb carrier. The metal plates have a surface which has the catalyst coating. The honeycomb is of the type having a plurality of channels defined by honeycomb walls, the honeycomb walls the having a coating thereon. The method comprises directing a fluid stream which can comprise a cleaning liquid at the coated plate surface or into the honeycomb channels with sufficient force to loosen and remove at least some of the coating from the carrier surface. The carrier can then be separated from the liquid and dried. Where additional coating is to be removed, a stream of gas is directed at the carrier surface with sufficient force to loosen and remove at least some of the coating. The cleaned carrier can then be recoated. The present invention includes reclaimed and recoated articles.

REFERENCES:
patent: 3565830 (1971-02-01), Keith et al.
patent: 3790654 (1974-02-01), Bagley
patent: 3885771 (1975-06-01), Dwyer
patent: 3885977 (1975-05-01), Lachman et al.
patent: 4039482 (1977-08-01), Hoyer
patent: 4335023 (1982-06-01), Dettling et al.
patent: 5820693 (1998-10-01), Patchett et al.

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