Chemistry of inorganic compounds – Hydrogen or compound thereof – Elemental hydrogen
Reexamination Certificate
2004-07-08
2008-11-11
Langel, Wayne (Department: 1793)
Chemistry of inorganic compounds
Hydrogen or compound thereof
Elemental hydrogen
C422S211000, C423S653000, C502S337000
Reexamination Certificate
active
07449167
ABSTRACT:
A process for adiabatically prereforming a feedstock, includes: providing an adiabatic reactor; providing a catalyst containing 1-20 wt. % nickel and 0.4-5 wt. % potassium, wherein the catalyst has an overall catalyst porosity of 25-50% with 20-80% of the overall catalyst porosity contributed by pores having pore diameters of at least 500 Å; providing the feedstock containing natural gas and steam, wherein the natural gas contains an initial concentration of higher hydrocarbons, and a ratio of steam to natural gas in the feedstock is from 1.5:1 to 5:1; preheating the feedstock to a temperature of 300-700° C. to provide a heated feedstock; providing the heated feedstock to the reactor; and producing a product containing hydrogen, carbon monoxide, carbon dioxide, unreacted methane, and steam, wherein said product contains a reduced concentration of higher hydrocarbons less than the initial concentration of higher hydrocarbons, to prereform the feedstock.
REFERENCES:
patent: 3436358 (1969-04-01), Poul
patent: 3472763 (1969-10-01), Cosyns et al.
patent: 3533963 (1970-10-01), Senes et al.
patent: 3791993 (1974-02-01), Rostrup-Nielsen
patent: 3882636 (1975-05-01), Horie et al.
patent: 3988425 (1976-10-01), Jockel et al.
patent: 4101449 (1978-07-01), Noda et al.
patent: 4105591 (1978-08-01), Banks et al.
patent: 4707351 (1987-11-01), Lord et al.
patent: 4863712 (1989-09-01), Twigg et al.
patent: 4985231 (1991-01-01), Lywood
patent: 4990481 (1991-02-01), Sato et al.
patent: 5773589 (1998-06-01), Shoji et al.
patent: 6123913 (2000-09-01), Clawson et al.
patent: 6280864 (2001-08-01), Towler et al.
patent: 6299994 (2001-10-01), Towler et al.
patent: 2001/0009653 (2001-07-01), Clawson et al.
patent: 2002/0165417 (2002-11-01), Numaguchi et al.
patent: 2004/0077496 (2004-04-01), Zhao et al.
patent: 2004/0138060 (2004-07-01), Rapier et al.
patent: 2004/0166056 (2004-08-01), Eyman et al.
patent: 1 241 130 (2002-09-01), None
patent: 1 277 697 (2003-01-01), None
patent: 1 503 959 (1967-12-01), None
patent: 969637 (1961-06-01), None
patent: 1155843 (1965-08-01), None
patent: 1150066 (1965-12-01), None
patent: 2004/011138 (2004-02-01), None
patent: WO 2004/011138 (2004-02-01), None
Fogash Kevin Boyle
Garg Diwakar
Genkin Eugene S.
Licht William Robert
Mehta Sanjay
Air Products and Chemicals Inc.
Gourley Keith D.
Hoke, Jr. Bryan C.
Langel Wayne
LandOfFree
Catalyst and process for improving the adiabatic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalyst and process for improving the adiabatic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst and process for improving the adiabatic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4035634