Catalysts for the reduction of ammonia emission from rich-burn exhaust
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/58
B01D-053/94
B01J-035/00
F01N-003/10
출원번호
US-0083154
(2011-04-08)
등록번호
US-8101146
(2012-01-24)
발명자
/ 주소
Fedeyko, Joseph M.
Chen, Hai-Ying
Reining, Arthur J.
출원인 / 주소
Johnson Matthey Public Limited Company
대리인 / 주소
Johnson, Jimmie
인용정보
피인용 횟수 :
71인용 특허 :
4
초록▼
A system for reducing ammonia (NH3) emissions includes (a) a first component comprising a first substrate containing a three-way catalyst, wherein the first component is disposed upstream of a second component comprising a second substrate containing an ammonia oxidation catalyst, wherein said ammon
A system for reducing ammonia (NH3) emissions includes (a) a first component comprising a first substrate containing a three-way catalyst, wherein the first component is disposed upstream of a second component comprising a second substrate containing an ammonia oxidation catalyst, wherein said ammonia oxidation catalyst comprises a small pore molecular sieve supporting at least one transition metal; and (b) an oxygen-containing gas input disposed between the components. For example, a CHA Framework Type small pore molecular sieve may be used. A method for reducing NH3 emission includes introducing an oxygen-containing gas into a gas stream to produce an oxygenated gas stream; and exposing the oxygenated gas stream to an NH3 oxidation catalyst to selectively oxidize at least a portion of the NH3 to N2.
대표청구항▼
1. A system for reducing ammonia (NH3) emissions comprising: (a) a first component comprising a first substrate and a three-way catalyst disposed thereon, wherein the first component is disposed upstream of, and in fluid communication with, a second component comprising a second substrate and an amm
1. A system for reducing ammonia (NH3) emissions comprising: (a) a first component comprising a first substrate and a three-way catalyst disposed thereon, wherein the first component is disposed upstream of, and in fluid communication with, a second component comprising a second substrate and an ammonia oxidation catalyst disposed thereon, wherein said ammonia oxidation catalyst has a first catalyst layer which comprises a small pore molecular sieve supporting at least one transition metal and wherein the first catalyst layer excludes ruthenium (Ru), rhodium (Rh), palladium (Pd), rhenium (Re), iridium (Ir) and platinum (Pt); and(b) an oxygen-containing gas input disposed between said first and second components. 2. The system of claim 1 further comprising: (c) a first gaseous feed stream comprising exhaust gas derived from a rich-burn combustion process, wherein said feed stream is upstream of, and in fluid communication with, the first component; and(d) a conduit disposed between, and in fluid communication with, the first and second components and in fluid communication with said oxygen-containing gas input. 3. The system of claim 2 wherein said oxygen-containing gas input comprises a second gaseous feed stream. 4. The system of claim 1, wherein the small pore molecular sieve is selected from the group consisting of aluminosilicate molecular sieves, metal-substituted aluminosilicate molecular sieves, aluminophosphate (AlPO) molecular sieves, metal-substituted aluminophosphate (MeAlPO) molecular sieves, silico-alunninophosphate (SAPO) molecular sieves, and metal substituted silico-aluminophosphate (MeAPSO) molecular sieves, and mixtures thereof. 5. The system of claim 1, wherein the small pore molecular sieve is selected from the group of Framework Types consisting of CHA, LEV, ERI, AEI, UFI, and DDR, and mixtures and/or intergrowths thereof. 6. The system of claim 1, wherein the small pore molecular sieve comprises a CHA Framework Type. 7. The system of claim 1, wherein the at least one transition metal is selected from the group consisting of chromium (Cr), cerium (Ce), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), and copper (Cu), and mixtures thereof. 8. The system of claim 1, wherein the small pore molecular sieve supporting the at least one transition metal is a Cu-supported CHA Framework Type. 9. The system of claim 1, wherein the ammonia oxidation catalyst further comprises a second catalyst layer comprising a platinum group metal, wherein the first catalyst layer is disposed relative to the second catalyst layer such that the exhaust contacts the first catalyst layer before contacting the second catalyst layer. 10. The system of claim 9, wherein the platinum group metal is selected from the group consisting of ruthenium (Ru), rhodium (Rh), palladium (Pd), rhenium (Re), iridium (Ir) and platinum (Pt), and mixtures thereof. 11. The system of claim 9, wherein the small pore molecular sieve supporting the at least one transition metal in the first catalyst layer is a Cu-supported CHA Framework Type and the platinum group metal in the second catalyst layer is platinum (Pt). 12. A method for reducing ammonia (NH3) emission comprising: introducing an oxygen-containing gas into a gas stream having NH3 and a lambda <1 to provide an oxygenated gas stream; and exposing the oxygenated gas stream to an NH3 oxidation catalyst comprising at least one small pore molecular sieve supporting at least one transition metal to selectively oxidize at least a portion of the NH3 to N2, wherein the at least one transition metal excludes ruthenium (Ru), rhodium (Rh), palladium (Pd), rhenium (Re), iridium (Ir) and platinum (Pt). 13. The method of claim 12 further comprising, upstream of the step of introducing an oxygen-containing gas, the step of: exposing a rich burn exhaust gas to a three-way catalyst for converting nitrogen oxides (NOx), hydrocarbons (HC), and carbon monoxide (CO) to produce the gas stream having NH3 and a lambda <1. 14. The method of claim 13, wherein the rich burn exhaust gas has a temperature in the range from about 400-650° C. 15. The method of claim 12, wherein the oxygen-containing gas is introduced to produce an oxygenated gas stream having an O2:NH3 ratio from about 2:1 to about 1:1. 16. A catalyst article comprising: (a) a catalyst composition having a first catalyst layer comprising (i) a small pore molecular sieve comprising a framework defining pores and having atomic sites; and (ii) at least one transition metal in atomic form disposed at least one of said atomic sites and in oxide form residing freely in at least one of said pores, wherein the first catalyst layer excludes ruthenium (Ru), rhodium (Rh), palladium (Pd), rhenium (Re), iridium (Ir) and platinum (Pt); and(b) a substrate upon which said catalyst is disposed, wherein said catalyst article is adapted to oxidize ammonia generated by catalytic conversion of a rich burn exhaust gas. 17. The catalyst article of claim 16, wherein the small pore molecular sieve is a copper (Cu) supported small pore molecular sieve having from about 0.1 to about 20.0 wt % copper to the total weight of the catalyst. 18. The catalyst of claim 16, wherein the catalyst composition further comprises a second catalyst layer comprising a platinum group metal, wherein the first catalyst layer is disposed upon the second catalyst layer. 19. The catalyst of claim 18, wherein the small pore molecular sieve is a copper (Cu) supported small pore molecular sieve having from about 0.2 to about 4 wt % copper to the total weight of the catalyst.
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Caudle, Matthew T.; Deiterle, Martin; Roth, Stanley A.; Xue, Wen-Mei, Bifunctional catalysts for selective ammonia oxidation.
Bull, Ivor; Xue, Wen Mei; Burk, Patrick; Boorse, R. Samuel; Jaglowski, William M.; Koermer, Gerald S.; Moini, Ahmad; Patchett, Joseph A.; Dettling, Joseph C.; Caudle, Matthew T., Copper CHA zeolite catalysts.
Addiego William P. (Corning NY) Swaroop Srinivas H. (Painted Post NY) Williams Jimmie L. (Painted Post NY) Wusirika Raja R. (Painted Post NY), Multi-stage TWC system.
Phillips, Paul Richard; Chandler, Guy Richard; Green, Alexander Nicholas Michael; Harris, Matthew Eben; Wylie, James Alexander; Gall, Miroslaw; Burgess, Garry Adam, Combining SCR with PNA for low temperature emission control.
Andersen, Paul J.; Casci, John Leonello; Chen, Hai-Ying; Fedeyko, Joseph M., Disordered molecular sieve supports for the selective catalytic reduction of NOx.
Andersen, Paul J.; Casci, John Leonello; Chen, Hai-Ying; Fedeyko, Joseph M., Disordered molecular sieve supports for the selective catalytic reduction of NOx .
Devarakonda, Maruthi Narasinga Rao; McDowell, Robert Earl; Spaulding, Dennis John; von der Ehe, James Kristopher, Emission control in rich burn natural gas engines.
Minta, Moses; Mittricker, Franklin F.; Rasmussen, Peter C.; Starcher, Loren K.; Rasmussen, Chad C.; Wilkins, James T.; Meidel, Jr., Richard W., Low emission power generation and hydrocarbon recovery systems and methods.
Oelkfe, Russell H.; Huntington, Richard A.; Mittricker, Franklin F., Low emission power generation systems and methods incorporating carbon dioxide separation.
Minto, Karl Dean; Denman, Todd Franklin; Mittricker, Franklin F.; Huntington, Richard Alan, Method and system for combustion control for gas turbine system with exhaust gas recirculation.
Mittricker, Franklin F.; Starcher, Loren K.; Rasmussen, Chad C.; Huntington, Richard A.; Hershkowitz, Frank, Methods and systems for controlling the products of combustion.
Mittricker, Franklin F.; Starcher, Loren K.; Rasmussen, Chad; Huntington, Richard A.; Hershkowitz, Frank, Methods and systems for controlling the products of combustion.
Mittricker, Franklin F.; Huntington, Richard A.; Starcher, Loren K.; Sites, Omar Angus, Methods of varying low emission turbine gas recycle circuits and systems and apparatus related thereto.
Wichmann, Lisa Anne; Simpson, Stanley Frank, Methods, systems and apparatus relating to combustion turbine power plants with exhaust gas recirculation.
Huntington, Richard A.; Denton, Robert D.; McMahon, Patrick D.; Bohra, Lalit K.; Dickson, Jasper L., Processing exhaust for use in enhanced oil recovery.
Gupta, Himanshu; Huntington, Richard; Minta, Moses K.; Mittricker, Franklin F.; Starcher, Loren K., Stoichiometric combustion of enriched air with exhaust gas recirculation.
Denton, Robert D.; Gupta, Himanshu; Huntington, Richard; Minta, Moses; Mittricker, Franklin F.; Starcher, Loren K., Stoichiometric combustion with exhaust gas recirculation and direct contact cooler.
Stoia, Lucas John; DiCintio, Richard Martin; Melton, Patrick Benedict; Romig, Bryan Wesley; Slobodyanskiy, Ilya Aleksandrovich, System and method for a multi-wall turbine combustor.
Huntington, Richard A.; Minto, Karl Dean; Xu, Bin; Thatcher, Jonathan Carl; Vorel, Aaron Lavene, System and method for a stoichiometric exhaust gas recirculation gas turbine system.
Valeev, Almaz Kamilevich; Ginesin, Leonid Yul'evich; Shershnyov, Borys Borysovich; Sidko, Igor Petrovich; Meshkov, Sergey Anatolievich, System and method for a turbine combustor.
Slobodyanskiy, Ilya Aleksandrovich; Davis, Jr., Lewis Berkley; Minto, Karl Dean, System and method for barrier in passage of combustor of gas turbine engine with exhaust gas recirculation.
Minto, Karl Dean; Slobodyanskiy, Ilya Aleksandrovich; Davis, Jr., Lewis Berkley; Lipinski, John Joseph, System and method for controlling the combustion process in a gas turbine operating with exhaust gas recirculation.
Huntington, Richard A.; Dhanuka, Sulabh K.; Slobodyanskiy, Ilya Aleksandrovich, System and method for diffusion combustion in a stoichiometric exhaust gas recirculation gas turbine system.
Huntington, Richard A.; Dhanuka, Sulabh K.; Slobodyanskiy, Ilya Aleksandrovich, System and method for diffusion combustion with fuel-diluent mixing in a stoichiometric exhaust gas recirculation gas turbine system.
Huntington, Richard A.; Dhanuka, Sulabh K.; Slobodyanskiy, Ilya Aleksandrovich, System and method for diffusion combustion with oxidant-diluent mixing in a stoichiometric exhaust gas recirculation gas turbine system.
Subramaniyan, Moorthi; Hansen, Christian Michael; Huntington, Richard A.; Denman, Todd Franklin, System and method for exhausting combustion gases from gas turbine engines.
Huntington, Richard A.; Dhanuka, Sulabh K.; Slobodyanskiy, Ilya Aleksandrovich, System and method for load control with diffusion combustion in a stoichiometric exhaust gas recirculation gas turbine system.
Huntington, Richard A.; Mittricker, Franklin F.; Starcher, Loren K.; Dhanuka, Sulabh K.; O'Dea, Dennis M.; Draper, Samuel D.; Hansen, Christian M.; Denman, Todd; West, James A., System and method for oxidant compression in a stoichiometric exhaust gas recirculation gas turbine system.
Biyani, Pramod K.; Leyers, Scott Walter; Miranda, Carlos Miguel, System and method for protecting components in a gas turbine engine with exhaust gas recirculation.
Biyani, Pramod K.; Saha, Rajarshi; Dasoji, Anil Kumar; Huntington, Richard A.; Mittricker, Franklin F., System and method for protecting components in a gas turbine engine with exhaust gas recirculation.
O'Dea, Dennis M.; Minto, Karl Dean; Huntington, Richard A.; Dhanuka, Sulabh K.; Mittricker, Franklin F., System and method of control for a gas turbine engine.
Oelfke, Russell H.; Huntington, Richard A.; Dhanuka, Sulabh K.; O'Dea, Dennis M.; Denton, Robert D.; Sites, O. Angus; Mittricker, Franklin F., Systems and methods for carbon dioxide capture in low emission combined turbine systems.
Thatcher, Jonathan Carl; West, James A.; Vorel, Aaron Lavene, Systems and methods for controlling exhaust gas flow in exhaust gas recirculation gas turbine systems.
Mittricker, Franklin F.; Huntington, Richard A.; Dhanuka, Sulabh K.; Sites, Omar Angus, Systems and methods for controlling stoichiometric combustion in low emission turbine systems.
Borchert, Bradford David; Trout, Jesse Edwin; Simmons, Scott Robert; Valeev, Almaz; Slobodyanskiy, Ilya Aleksandrovich; Sidko, Igor Petrovich; Ginesin, Leonid Yul'evich, Systems and methods for high volumetric oxidant flow in gas turbine engine with exhaust gas recirculation.
Vorel, Aaron Lavene; Thatcher, Jonathan Carl, Systems and methods of estimating a combustion equivalence ratio in a gas turbine with exhaust gas recirculation.
Thatcher, Jonathan Carl; Slobodyanskiy, Ilya Aleksandrovich; Vorel, Aaron Lavene, Systems and methods to respond to grid overfrequency events for a stoichiometric exhaust recirculation gas turbine.
Allen, Jonathan Kay; Borchert, Bradford David; Trout, Jesse Edwin; Slobodyanskiy, Ilya Aleksandrovich; Valeev, Almaz; Sidko, Igor Petrovich; Subbota, Andrey Pavlovich, Turbine system with exhaust gas recirculation, separation and extraction.
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