Leo W Brown

US Patent:

6649043, Nov 18, 2003

Filed:

Jul 21, 2000

Appl. No.:

09/620865

Inventors:

Jingguang G. Chen - Hockessin DE
Leo D. Brown - Baton Rouge LA
Gary B. McVicker - Califon NJ
Edward S. Ellis - Fairfax VA
Michele S. Touvelle - Baton Rouge LA
Darryl P. Klein - Ellicott City MD
David E. W. Vaughan - Flemington NJ

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10G 4500

US Classification:

208213, 208217, 585826, 502 34, 502 38, 502 53

Abstract:

A process to regenerate metal oxide desulfurization sorbents using an oxidizing and reducing atmosphere. The sorbents may be mono- or multi-metallic in nature, and preferably comprise Cu, Ni and/or Co. If desired, secondary metals may be incorporated to increase regeneration efficiency and/or capacity. Other additives may be used to suppress hydrocarbon cracking. A sorbent containing Zn may be combined with an Fe, Co, Ni, Mo, or W catalyst or a noble metal catalyst and combinations thereof.

US Patent:

6723230, Apr 20, 2004

Filed:

Jul 21, 2000

Appl. No.:

09/620796

Inventors:

Jingguang G. Chen - Hockessin DE
Leo D. Brown - Baton Rouge LA
Gary B. McVicker - Califon NJ
Edward S. Ellis - Fairfax VA
Michele S. Touvelle - Baton Rouge LA
Darryl P. Klein - Ellicott City MD
David E. W. Vaughan - Flemington NJ

Assignee:

ExxonMobil Research Engineering Company - Annandale NJ

International Classification:

C10G 2500

US Classification:

208213, 208211, 208212, 208217, 208226, 208299, 502 20, 502 34, 502 53

Abstract:

A process to regenerate iron-based hydrogen sulfide sorbents using steam. The steam is preferably mixed with hydrogen-containing gas and/or an inert gas, such as nitrogen. In a preferred embodiment, the sorbent is first exposed to the steam and then exposed to a hydrogen-containing gas at regeneration conditions.

US Patent:

20030178343, Sep 25, 2003

Filed:

Jan 6, 2003

Appl. No.:

10/336948

Inventors:

Jingguang Chen - Hockessin DE, US
Leo Brown - Baton Rouge LA, US
William Baird - Baton Rouge LA, US
Gary McVicker - Califon NJ, US
Edward Ellis - Fairfax VA, US
Michele Touvelle - Centreville VA, US
Darryl Klein - Ellicott City MD, US
David Vaughan - State College PA, US

International Classification:

C10G045/04
C10G045/06
C10G045/10

US Classification:

208/213000, 502/053000, 208/21600R, 208/217000, 208/244000

Abstract:

A process to regenerate a spent hydrogen sulfide sorbent comprised of a sorbent metal selected from Fe, Ni, Co, and Cu on a refractory oxide support using hydrogen gas. The sorbent metal component may be mono- or multi-metallic in nature, and preferably comprise Ni and/or Co. If desired, secondary metals may be incorporated to increase regeneration efficiency and/or capacity. Other additives suppress hydrocarbon cracking.