Integrated engine exhaust and heat process flexible and low emissions combined heat and power process and system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01N-003/10
F01N-005/04
F01N-005/02
출원번호
US-0714119
(2015-05-15)
등록번호
US-9797289
(2017-10-24)
발명자
/ 주소
Kelly, John T.
Castaldini, Carlo
Namazian, Mehdi
출원인 / 주소
ALTEX TECHNOLOGIES CORPORATION
대리인 / 주소
Squire Patton Boggs (US) LLP
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
The invention provides systems and methods for electric power production and integrated combustion and emissions control. The invention may include an engine capable of receiving air and fuel, and producing power and an engine exhaust gas. The invention may also include a first reaction zone receivi
The invention provides systems and methods for electric power production and integrated combustion and emissions control. The invention may include an engine capable of receiving air and fuel, and producing power and an engine exhaust gas. The invention may also include a first reaction zone receiving the engine exhaust gas from the engine configured to combust fuel and air having an equivalence ratio of more than one, thereby generating a first product. The combustion may reduce nitrogen containing species. The invention may also include a second reaction zone receiving the engine exhaust gas from the engine configured to combust fuel and air having an equivalence ratio of less than one, thereby generating a second product. The combustion may reduce or minimize NOx. The invention may also include a mixing zone configured to receive the first product and second product, and mix and react the first and second products, thereby generating an exhaust with reduced NOx levels. This may occur with sufficient residence time and temperature to complete combustion and promote nitrogenous species reduction reactions. For inventions with multiple zones, fuel or air or exhaust gas may be adjusted, diverted or turned off as load is reduced to maintain flame stability for all zones that remaining operational. For inventions with engine exhaust that provides less oxidant than the burner requires, an air eductor means may be arranged between the engine and the burner that entrains needed additional oxidant and simultaneously recovers the flow energy in the turbine exhaust.
대표청구항▼
1. A system, comprising: at least one engine capable of producing power and an engine exhaust gas;a first reaction zone configured to receive at least a portion of the engine exhaust gas from the at least one engine and configured to combust fuel and air having an equivalence ratio of more than one,
1. A system, comprising: at least one engine capable of producing power and an engine exhaust gas;a first reaction zone configured to receive at least a portion of the engine exhaust gas from the at least one engine and configured to combust fuel and air having an equivalence ratio of more than one, thereby generating a first product;a second reaction zone configured to receive at least a portion of the engine exhaust gas from the at least one engine and configured to combust fuel and air having an equivalence ratio of less than one, thereby generating a second product; anda burnout zone configured to receive the first product and second product, and mix and react the first and second products, thereby generating a burnout zone exhaust with reduced NOx levels;wherein in use the burnout zone exhaust produces a flame satisfying a burner load; andwherein in use the combustion of fuel and air in the first and/or second reaction zones is modulated to maintain flame stability in response to changes in the burner load and while the at least one engine is set to operate at a speed that optimizes the at least one engine's power output and efficiency. 2. The system of claim 1 that has multiple first and second reaction zones having the capability to modulate, divert or turn off fuel and/or air to maintain flame stability in response to changes in the burner load. 3. The system of claim 2 wherein the multiple first reaction zones and/or multiple second reaction zones are provided in series. 4. The system of claim 2 wherein the multiple first reaction zones and/or multiple second reaction zones are provided in parallel. 5. The system of claim 2 that has multiple parallel and serial first reaction zones and/or multiple parallel and serial second reaction zones. 6. The system of claim 1 wherein the first reaction zone is a fuel rich zone and the second reaction zone is a fuel lean zone. 7. The system of claim 1 wherein the first reaction zone, the second reaction zone, and/or the burnout zone have separate air and fuel introduction, heat extraction, cooled furnace gas introduction, and/or partial engine exhaust gas introduction. 8. The system of claim 1, wherein the engine exhaust gas exits into an eductor to recover flow energy in a turbine exhaust and entrain additional air into the first and the second reaction zones. 9. The system of claim 1 wherein the burnout zone, the first reaction zone and/or the second reaction zone are configured to receive amine species, exhaust gas, fuel, and/or air and cooled flue gas, steam or another diluent to control temperature. 10. The system of claim 1 further comprising an additional engine configured to produce power and an engine exhaust gas in communication with an additional reaction zone configured to generate an additional product that is received by the burnout zone. 11. The system of claim 1 wherein the at least one engine is a microturbine. 12. The system of claim 1 wherein the at least one engine has a tangential alignment of the engine exhaust gas, thereby promoting a cyclonic flow in the system. 13. The system of claim 1 wherein the first reaction zone is provided within a rich reactor surrounded by a plurality of lean jets. 14. The system of claim 1, wherein the at least one engine is set to operate at a speed that produces a relatively fixed exhaust flow rate. 15. The system of claim 1, wherein the at least one engine is set to operate at a constant speed. 16. The system of claim 1, wherein energy in the engine exhaust gas is used to entrain/educt additional air into the first and the second reaction zones and/or exhaust gas to provide an oxidant for added fuel into the first and the second zones. 17. A system, comprising: at least one engine capable of producing power and engine exhaust gases;a fuel rich zone configured to receive at least a portion of the engine exhaust gases from the at least one engine, and configured to receive and combust fuel and air having an equivalence ratio of more than one, thereby generating a product;a burnout zone configured to receive the product, and mix and react the product with the engine exhaust gases, thereby generating an exhaust with reduced NOx levels;wherein in use a burnout zone exhaust produces a flame satisfying a burner load; andwherein in use the combustion of fuel and air in the fuel rich zone is modulated to maintain flame stability in response to changes in the burner load and while the at least one engine is set to operate at a speed that optimizes the at least one engine's power output and efficiency. 18. The system of claim 17 wherein the fuel rich zone and/or burnout zone is configured to further receive amine species, fuel, or air and cooled flue gas, steam or another diluent to control temperature. 19. The system of claim 17, wherein energy in the engine exhaust gas is used to entrain/educt additional air into the fuel rich and the burnout zones and/or exhaust gas to provide an oxidant for added fuel into the fuel rich and the burnout zones. 20. A method for electric power and heat production, comprising: receiving, at a reaction zone, at least a portion of an engine exhaust gas from at least one engine producing electric power and the engine exhaust gas;combusting, at the reaction zone, fuel and air having an equivalence ratio of more than one, thereby generating a product;receiving, at a burnout zone, the product and an additional input, and mixing and reacting, at the burnout zone, the product and the additional input, thereby generating a burnout zone exhaust with reduced NOx levels;wherein the burnout zone exhaust produces a flame for satisfying a burner load; andwherein the combustion of fuel and air in the burnout zone is modulated to maintain flame stability in response to changes in the burner load and while the at least one engine is set to operate at a speed that optimizes the at least one engine's power output and efficiency. 21. The method of claim 20 wherein the reaction zone is a first reaction zone and the additional input is a product from a second reaction zone receiving at least a portion of the engine exhaust gas from the at least one engine, and configured to combust fuel and air having an equivalence ratio of less than one. 22. The method of claim 21, wherein amine species, fuel, and/or air is added to the burnout zone. 23. The method of claim 21 wherein at least a portion of the engine exhaust gas, fuel, or air is diluted with cooled flue gas, steam or another diluent to control temperature. 24. The method of claim 20 wherein the additional input is an amine species, engine exhaust, fuel, and/or air. 25. The method of claim 20 wherein at least a portion of the engine exhaust gas, fuel, or air is diluted with cooled flue gas, steam or another diluent to control temperature. 26. The method of claim 20, wherein energy in the engine exhaust gas is used to entrain/educt additional air into the reaction and the burnout zones and/or exhaust gas to provide an oxidant for added fuel into the reaction and the burnout zones.
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