Mineral oils: processes and products – Refining – Sulfur removal
Patent
1994-07-18
1995-08-29
Myers, Helane
Mineral oils: processes and products
Refining
Sulfur removal
208208R, 208 52CT, 208217, 208210, B01J 3666
Patent
active
054457289
ABSTRACT:
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.degree. to about 1250.degree. F. for 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.degree. to about 900.degree. 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.
REFERENCES:
patent: 3108972 (1963-10-01), Relailliau
patent: 4795726 (1989-01-01), Schaper et al.
patent: 4941964 (1990-07-01), Dai et al.
patent: 5047142 (1991-09-01), Sherwood, Jr.
patent: 5087348 (1992-02-01), Dai et al.
patent: 5230791 (1993-07-01), Sherwood, Jr.
patent: 5254513 (1993-10-01), Sherwood, Jr.
Hardee, Jr. Johnnie R.
Sherwood, Jr. David E.
Hunter Walter D.
Morgan Richard A.
Myers Helane
Priem Kenneth R.
Texaco Inc.
LandOfFree
Method for the reactivation of spent alumina-supported hydrotrea does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the reactivation of spent alumina-supported hydrotrea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the reactivation of spent alumina-supported hydrotrea will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1817761