Monolith based catalytic partial oxidation process for syngas production
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C01B-003/02
C01B-003/00
C01B-003/32
C01B-031/18
C01B-031/00
출원번호
US-0657610
(2003-09-08)
발명자
/ 주소
Jiang,Weibin
Park,Seungdoo
Tomczak,Mark S.
Acharya,Divyanshu R.
Tamhankar,Satish S.
Ramachandran,Ramakrishnan
출원인 / 주소
The BOC Group, Inc.
인용정보
피인용 횟수 :
8인용 특허 :
34
초록▼
An improved process for the catalytic partial oxidation of hydrocarbons to produce hydrogen and carbon monoxide and less than ˜2% carbon dioxide is disclosed. The process further permits the reaction to be initiated at room temperature, and utilizes a metal catalyst deposited on a ceria-coated
An improved process for the catalytic partial oxidation of hydrocarbons to produce hydrogen and carbon monoxide and less than ˜2% carbon dioxide is disclosed. The process further permits the reaction to be initiated at room temperature, and utilizes a metal catalyst deposited on a ceria-coated zirconia monolith support, which exhibits high conversions of hydrocarbons to synthesis gas (hydrogen and carbon monoxide).
대표청구항▼
Having thus described the invention, what we claim is: 1. A method for the partial oxidation of hydrocarbons in a reactor to produce hydrogen and carbon monoxide comprising initiating said partial oxidation at a temperature as low as about 10째 C. or higher by the sequential steps of feeding natural
Having thus described the invention, what we claim is: 1. A method for the partial oxidation of hydrocarbons in a reactor to produce hydrogen and carbon monoxide comprising initiating said partial oxidation at a temperature as low as about 10째 C. or higher by the sequential steps of feeding natural gas into said reactor, injecting hydrogen into said reactor and feeding an oxygen-containing gas into said reactor, wherein said natural gas and said oxygen-containing gas contact a reduced metal catalyst consisting essentially of a transition metal selected from the group consisting of nickel, cobalt, iron, platinum, palladium, iridium, rhenium, ruthenium, rhodium, osmium and combinations thereof supported on or in a ceria-coated zirconia monolith support. 2. The method as claimed in claim 1 wherein said hydrogen is injected into said feed gas mixture. 3. The method as claimed in claim 2 wherein said hydrogen is injected between the addition of said hydrocarbon-containing feed gas and said oxygen-containing feed gas. 4. The method as claimed in claim 2 wherein the injection flow of said hydrogen is for about 10 to about 30 seconds. 5. The method as claimed in claim 1 wherein said temperature is greater than 10째 C. and less than 100째 C. 6. The method as claimed in claim 1 wherein said ceria-coated zirconia monolith support is about 5% to about 30% ceria by weight. 7. The method as claimed in claim 6 wherein said hydrogen is present in an amount of about 0.5 to about 4.0 percent by volume of the total flow of said feed gas. 8. The method as claimed in claim 1 wherein said hydrogen is obtained from the product hydrogen. 9. The method as claimed in claim 1 wherein said feed gas is at a pressure of between 1 and 20 atmospheres. 10. The method as claimed in claim 1 wherein said feed gas has a standard gas hourly space velocity of about 50,000 to about 500,000 per hour. 11. The method as claimed in claim 1 wherein said feed gas has a linear velocity of about 0.2 to about 2.0 meters per second. 12. A method for the partial oxidation of hydrocarbons in a reactor to produce hydrogen and carbon monoxide comprising initiating said partial oxidation at a temperature as low as about 10째 C. by the sequential steps of feeding natural gas into said reactor, injecting a continuous stream of hydrogen into said reactor, and feeding an oxygen-containing gas into said reactor, wherein said natural gas and said oxygen-containing gas contact a reduced metal catalyst consisting essentially of a transition metal selected from the group consisting of nickel, cobalt, iron, platinum, palladium, iridium, rhenium, ruthenium, rhodium, osmium and combinations thereof supported on or in a ceria-coated zirconia monolith support. 13. The method as claimed in claim 12 further comprising adding a continuous flow of carbon dioxide to said feed gas. 14. The method as claimed in claim 12 wherein said hydrogen is injected into said feed gas mixture. 15. The method as claimed in claim 14 wherein said hydrogen is present in an amount of about 0.5 to about 4.0 percent by volume of the total flow of said feed gas. 16. The method as claimed in claim 12 wherein said temperature is greater than 10째 C. and less than 100째 C. 17. The method as claimed in claim 12 wherein said ceria-coated zirconia monolith support is about 5% to about 30% ceria by weight. 18. The method as claimed in claim 12 wherein said hydrogen is obtained from the product hydrogen. 19. The method as claimed in claim 12 wherein said feed gas is at a pressure of between 1 and 20 atmospheres. 20. The method as claimed in claim 12 wherein said feed gas has a standard gas hourly space velocity of about 50,000 to about 500,000 per hour. 21. The method as claimed in claim 12 wherein said feed gas has a linear velocity of about 0.2 to about 2.0 meters per second. 22. A method for the partial oxidation of hydrocarbons in a reactor to produce hydrogen and carbon monoxide by the steps of feeding natural gas, an oxygen-containing gas into said reactor, and carbon dioxide into said reactor, wherein said natural gas, said oxygen-containing gas and said carbon dioxide contact a rhodium catalyst supported on or in a ceria-coated zirconia monolith support. 23. The method as claimed in claim 22 wherein said carbon dioxide is present in said feed gas mixture in amounts up to about 80% by volume. 24. The method as claimed in claim 22 wherein said feed gas is at a pressure of between 1 and 20 atmospheres. 25. The method as claimed in claim 22 wherein said feed gas has a standard gas hourly space velocity of about 50,000 to about 500,000 per hour. 26. The method as claimed in claim 22 wherein said feed gas has a linear velocity of about 0.2 to about 2.0 meters per second. 27. The method as claimed 22 wherein said ceria-coated zirconia monolith support is about 5% to about 30% ceria by weight. 28. A method for the partial oxidation of hydrocarbons in a reactor to produce hydrogen and carbon monoxide comprising the sequential steps of feeding natural gas into said reactor, injecting hydrogen at a pressure of about 1.0 bar to about 10.0 bar into said reactor, and feeding an oxygen-containing gas into said reactor thereby contacting a reduced metal catalyst consisting essentially of a transition metal selected from the group consisting of nickel, cobalt, iron, platinum, palladium, iridium, rhenium, ruthenium, rhodium, osmium and combinations thereof supported on or in a ceria-coated zirconia monolith. 29. The method as claimed in claim 28 wherein said pressure is about 1.5 bar to about 3.0 bar. 30. The method as claimed in claim 28 where the ratio of hydrogen to carbon monoxide produced by said partial oxidation is about 2:1 hydrogen to carbon monoxide. 31. The method as claimed in claim 28 wherein said ceria-coated zirconia monolith support is about 5% to about 30% ceria by weight. 32. The method as claimed in claim 28 wherein said transition metal is rhodium.
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