[특허]Heating a reaction chamber

Ener-Core Power, Inc.

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특허 상세정보

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Heating a reaction chamber

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-001/00
미국특허분류(USC)	060/737; 431/012
출원번호	US-0870021 (2010-08-27)
등록번호	US-8621869 (2014-01-07)
발명자 / 주소	Prabhu, Edan
출원인 / 주소	Ener-Core Power, Inc.
대리인 / 주소	McDermott Will & Emery LLP
인용정보	피인용 횟수 : 1 인용 특허 : 211

초록
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An air/fuel mixture is received in an oxidation reaction chamber. The air/fuel mixture has a low concentration of fuel, for example, below a lower explosive limit (LEL). The mixture is received while a temperature of a region in the oxidation reaction chamber is below a temperature sufficient to oxidize the fuel. The temperature of the region is raised to at least the oxidation temperature (the temperature sufficient to oxidize the fuel) primarily using heat energy released from oxidizing the air/fuel mixture in a different region in the reaction chamber...

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1. A method for heating an oxidation reaction chamber, the method comprising: receiving an air/fuel mixture in a first inlet and a second inlet of an oxidation reaction chamber, a concentration of the fuel in the received air/fuel mixture being below a lower explosive limit of the fuel, the air/fuel mixture being received in the oxidation reaction chamber while a temperature of a first region in the oxidation reaction chamber is below an oxidation temperature sufficient to oxidize the fuel of the received air/fuel mixture from the first inlet;raising the temperature of the first region to at least the oxidation temperature sufficient to oxidize the fuel of the received air/fuel mixture, the temperature being raised primarily using a portion of the heat energy released from oxidizing the air/fuel mixture in a second, different region in the reaction chamberusing a heater to heat the second region of the reaction chamber to at least the oxidation temperature; andgenerating the heat energy by oxidizing the air/fuel mixture in the second region. 2. The method of claim 1, further comprising: after raising the temperature of the first region to at least the oxidation temperature, receiving additional air/fuel mixture flow in the first region while a temperature of a third region in the oxidation reaction chamber is below the oxidation temperature; andraising the temperature of the third region to at least the oxidation temperature primarily using a portion of the heat energy released from oxidizing the additional air/fuel mixture in the first region. 3. The method of claim 2, wherein raising the temperature of the first region comprises transferring the heat energy from the second region to the first region. 4. The method of claim 3, wherein transferring the heat energy comprises at least one of transferring by convection, transferring by conduction, or transferring by radiation. 5. The method of claim 2, wherein receiving the air/fuel mixture comprises receiving a flow of the air/fuel mixture through a second inlet into the second region, the method further comprising receiving an additional flow of the air/fuel mixture through a first inlet into the first region after raising the temperature of the first region to at least the oxidation temperature. 6. The method of claim 2, further comprising: turning off the heater; andafter turning off the heater, maintaining the temperature of the first region and the temperature of the second region at least at the oxidation temperature primarily using heat energy released from oxidizing the air/fuel mixture in the reaction chamber. 7. The method of claim 1, further comprising raising a temperature substantially throughout the oxidation reaction chamber to at least the oxidation temperature primarily using heat energy released from oxidizing the air/fuel mixture in the reaction chamber. 8. The method of claim 7, further comprising maintaining the temperature substantially throughout the oxidation reaction chamber below a temperature that causes formation of nitrogen oxides. 9. The method of claim 1, wherein raising the temperature of the first region raises a temperature of thermal capacitance material about the region. 10. The method of claim 1, wherein receiving an air/fuel mixture comprises receiving the air/fuel mixture in the oxidation reaction chamber while at least 95 percent of an internal volume of the oxidation reaction chamber is below the oxidation temperature. 11. The method of claim 1, wherein the received air/fuel mixture cannot sustain a flame. 12. The method of claim 1, wherein raising a temperature of the first region comprises raising the temperature of the first region while an internal pressure of the oxidation reaction chamber is at or below two pounds per square inch gauge. 13. The method of claim 12, further comprising raising the internal pressure of the oxidation reaction chamber above two pounds per square inch gauge. 14. The method of claim 13, further comprising communicating oxidation product from an outlet of the oxidation reaction chamber to an inlet of a turbine, wherein raising the internal pressure of the oxidation reaction chamber comprises raising the internal pressure to a pressure at which the turbine outputs energy. 15. A system for oxidizing fuel, the system comprising: an oxidation reaction chamber comprising an internal volume that includes a first region and a second, different region;a first inlet into the reaction chamber arranged to communicate a first air/fuel mixture from fuel and air sources into the first region;a second inlet into the reaction chamber arranged to communicate a second air/fuel mixture from the fuel and air sources into the second region, the second air/fuel mixture flow having a concentration of fuel below a lower explosive limit for the fuel;a heater in the second region arranged to heat the second region to at least an oxidation temperature sufficient to oxidize the fuel of the second air/fuel mixture flow; andthe reaction chamber arranged to communicate to the first region sufficient heat energy from oxidizing the fuel in the second region to raise the temperature of the first region from below the oxidation temperature to at least the oxidation temperature. 16. The system of claim 15, further comprising a fuel distributor disposed in the internal volume and defining a plurality of distributor inlets arranged to communicate fluid into the first region, the plurality of distributor inlets including the first inlet. 17. The system of claim 16, further comprising an additional fuel distributor disposed in the internal volume and defining an additional plurality of distributor inlets arranged to communicate fluid into the second region, the additional plurality of distributor inlets including the second inlet. 18. The system of claim 15, further comprising: a gas turbine having a turbine inlet; andan outlet from the internal volume in fluid communication with the turbine inlet. 19. The system of claim 18, wherein the gas turbine has a turbine outlet, the system further comprising a blower having a blower inlet in fluid communication with the turbine outlet, the blower configured to provide pressure that induces flow from the internal volume into the turbine. 20. The system of claim 15, wherein the internal volume further comprises a plurality of additional regions, the system comprising a plurality of additional inlets arranged to communicate air/fuel mixture into the additional regions, the reaction chamber arranged to communicate to at least one of the additional regions heat energy from oxidizing the fuel in at least one other region to raise the temperature of the additional region from below the oxidation temperature to at least the oxidation temperature. 21. The system of claim 15, further comprising a fuel source having a fuel source outlet in fluid communication with the first inlet and the second inlet. 22. The system of claim 21, further comprising a blower in fluid communication with the fuel source outlet and the first inlet and the second inlet, the blower arranged to provide pressure that induces flow through the first inlet and the second inlet into the internal volume of the reaction chamber. 23. The system of claim 15, wherein the heater comprises an electrical heater. 24. A method of heating an oxidation reaction chamber, the method comprising: receiving an air/fuel mixture to a first inlet of a first region and a second inlet of second region of a reaction chamber, a concentration of the fuel in the received air/fuel mixture below a lower explosive limit of the fuel;raising a temperature of the first region in the oxidation reaction chamber from an initial temperature below an oxidation temperature sufficient to oxidize the air/fuel mixture to at least the oxidation temperature primarily by oxidizing the air/fuel mixture in the reaction chamber;using a heater to heat the second region of the reaction chamber to at least the oxidation temperature; andgenerating the heat energy by oxidizing the air/fuel mixture in the second region. 25. The method of claim 24, wherein raising the temperature of the first region results in an entire inner volume of the reaction chamber being at or above the oxidation temperature. 26. The method of claim 25, further comprising maintaining the entire inner volume below a temperature that causes formation of nitrogen oxides. 27. The method of claim 24, the method further comprising raising a temperature of the second region in the oxidation reaction chamber from an initial temperature of the second region to at least the oxidation temperature by oxidizing additional air/fuel mixture in the first region. 28. The method of claim 24, wherein raising the temperature of the first region comprises raising the temperature of the first region while the first region is at or below two pounds per square inch gauge pressure, the method further comprising pressurizing the oxidation reaction chamber to above two pounds per square inch gauge pressure.

이 특허에 인용된 특허 (211)

이 특허를 인용한 특허 피인용횟수: 1

Maslov, Boris A.; Armstrong, Jeffrey. Gradual oxidation with flue gas. USP2017089726374.

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Heating a reaction chamber

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Heating a reaction chamber

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