Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1996-10-02
1998-10-13
Warden, Jill
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
134 2218, 134 36, 134 37, B08B 900, B08B 302, B08B 500
Patent
active
058206930
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.
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Nugent John M.
Patchett Joseph A.
Speronello Barry K.
Chaudhry Saeed
Warden Jill
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