James Sean Glass

US Patent:

58634177, Jan 26, 1999

Filed:

Dec 20, 1996

Appl. No.:

8/771072

Inventors:

Richard A. Demmin - Baton Rouge LA
James P. Glass - Baton Rouge LA

Assignee:

Exxon Research and Engineering Company - Florham Park NJ

International Classification:

C10G 1118

US Classification:

208113

Abstract:

A FCC process in which spent catalyst is stripped of hydrocarbon in a stripping zone prior to entering the regenerator. In order to maximize the amount of strippable hydrocarbon removed in the stripping zone, a sample of spent catalyst is removed prior to entering the regenerator. The spent catalyst is analyzed for strippable hydrocarbon by conducting the sample to a heated catalyst collection vessel, stripping hydrocarbon from the catalyst using an inert stripping gas, oxidizing the gasses from the collection vessel to carbon dioxide and water, and measuring the amount of carbon dioxide and/or water which amount of carbon dioxide and/or water can be correlated to the amount of strippable hydrocarbon on the catalyst sample.

US Patent:

58826149, Mar 16, 1999

Filed:

Jan 23, 1998

Appl. No.:

/012534

Inventors:

James H. Taylor - Baton Rouge LA
James P. Glass - Baton Rouge LA
Geoffrey R. Say - Baton Rouge LA
Richard P. O'Connor - Baton Rouge LA

Assignee:

Exxon Research and Engineering Company - Florham Park NJ

International Classification:

C01B 1716
C10G 2900

US Classification:

423230

Abstract:

Very low sulfur content hydrocarbon gas is achieved by sequentially contacting the gas first with zinc oxide and then with nickel metal. This has reduced the total sulfur content of natural gas feed for a fluid bed syngas generator to less than 0. 1 ppm and has resulted in greater syngas productivity. A zinc oxide guard bed downstream of the syngas generator reduces the total sulfur content of the syngas to less than 10 vppb and preferably less than 5 vppb. This very low sulfur content syngas is used for sulfur sensitive processes, such as hydrocarbon synthesis. The process is especially useful for natural gas which contains H. sub. 2 S, COS, mercaptans and other sulfur bearing compounds.

US Patent:

58689222, Feb 9, 1999

Filed:

Dec 20, 1996

Appl. No.:

8/771074

Inventors:

James P. Glass - Baton Rouge LA
George A. Swan - Baton Rouge LA

Assignee:

Exxon Research and Engineering Company - Florham Park NJ

International Classification:

C10G 1118

US Classification:

208113

Abstract:

A FCC process in which spent catalyst is stripped of hydrocarbon in a stripping zone prior to entering the regenerator. In order to maximize the amount of strippable hydrocarbon removed in the stripping zone with minimal use of stripping gas, a sample of spent catalyst is removed prior to entering the regenerator. The spent catalyst is analyzed for strippable hydrocarbon by conducting the sample to a heated catalyst collection vessel, evacuating the catalyst, collecting the gases from the collection vessel and analyzing the gases for amount of strippable hydrocarbon on the spent catalyst.

US Patent:

61032069, Aug 15, 2000

Filed:

Nov 6, 1998

Appl. No.:

9/187884

Inventors:

James H. Taylor - Baton Rouge LA
James P. Glass - Baton Rouge LA
Geoffrey R. Say - Baton Rouge LA
Richard P. O'Connor - Baton Rouge LA

Assignee:

Exxon Research and Engineering Co - Florham Park NJ

International Classification:

B01D 4700
C01B 1716
C07C 102
C07C 2700
C07C 2706
B01J 800

US Classification:

423210

Abstract:

Very low sulfur content hydrocarbon gas is achieved by sequentially contacting the gas first with zinc oxide and then with nickel metal. This has reduced the total sulfur content of natural gas feed for a fluid bed syngas generator to less than 0. 1 ppm and has resulted in greater syngas productivity. A zinc oxide guard bed downstream of the syngas generator reduces the total sulfur content of the syngas to less than 10 vppb and preferably less than 5 vppb. This very low sulfur content syngas is used for sulfur sensitive processes, such as hydrocarbon synthesis. The process is especially useful for natural gas which contains H. sub. 2 S, COS, mercaptans and other sulfur bearing compounds.