B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 23/90 (2006.01) B01J 23/94 (2006.01) B01J 38/06 (2006.01) B01J 38/50 (2006.01) C10G 45/08 (2006.01) C10G 45/16 (2006.01)
Patent
CA 2106900
METHOD FOR THE REACTIVATION OF SPENT ALUMINA-SUPPORTED HYDROTREATING CATALYSTS (D# 79,465-F) ABSTRACT OF THE DISCLOSURE Spent or inactive alumina-supported catalysts removed from a catalytic hydrotreating process and having carbonaceous and metallic deposits thereon are reactivated After a solvent wash to remove process oils, the spent catalyst is contacted with steam at a temperature of 1000 to about 1250° F. far a period of about 2 to about 5 hours to form a reactivated catalyst suitable for reuse in a catalytic hydrotreating process. Optionally, the steam- treated catalyst can be regenerated by contact with an oxygen-containing gas at a temperature of about 700° to about 900° F. to remove carbon deposits from the catalyst, or, alternatively, the steam-treated catalyst can be acid- leached to remove undesired metals and then contacted with an oxygen-containing gas at an elevated temperature to remove carbon deposits.
Hardee Johnnie Ray Jr.
Sherwood David Edward Jr.
Smart & Biggar
Texaco Development Corporation
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