Title: Gas circulation method for moving bed catalyst regeneration zones
Application Number: 86102807 Application Date: 1986.04.24
Publication Number: 1004217 Publication Date: 1986.10.22
Approval Pub. Date: 1989.12.13 Granted Pub. Date: 1989.12.13
International Classifi-cation: B01J38/26;C10G35/12
Applicant(s) Name: UOP Inc. Address:
Inventor(s) Name: Arthur Raymond Greenwood
Attorney & Agent: LU XINHUA
Abstract:
    A method is disclosed for regenerating particulate catalyst used in a hydrocarbon conversion process such as catalytic reforming. The method is especially applicable to moving bed reactor systems. The catalyst being regenerated slowly moves downward as a dense bed which is contacted with different gas streams at different elevations within the regeneration zone. The invention involves employing a portion of relatively hot combustion gas as a heating gas stream, with the remainder of the combustion gas being cooled and recycled to the combustion zone. This eliminates the need to employ a heater to provide a suitable heating gas stream.
Time: 9
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