Gradual oxidation below flameout temperature
First Claim
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1. An oxidizer for oxidizing fuel, comprising:
- a reaction chamber having (i) one or more inlets that are configured to direct at least one gas of a fuel, oxidant, or diluent, into the reaction chamber and (ii) one or more outlets that are configured to direct reaction products from the reaction chamber;
a heater that is configured to maintain a temperature of the at least one gas, the at least one gas being at or before the one or more inlets, to be above an autoignition temperature of a resulting mixture, comprising the at least one gas, within the reaction chamber, wherein the reaction chamber is configured to oxidize the resulting mixture; and
a controller configured to output instructions to the reaction chamber to maintain a maximum reaction temperature in the reaction chamber below a flameout temperature of the resulting mixture while a calculated adiabatic temperature is above the flameout temperature by controlling at least one of (i) removal of heat from the reaction chamber or (ii) an inlet temperature of the reaction chamber.
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Abstract
Described herein are embodiments of systems and methods for oxidizing gases. In some embodiments, a reaction chamber is configured to receive a fuel gas and maintain the gas at a temperature within the reaction chamber that is above an autoignition temperature of the gas. The reaction chamber may also be configured to maintain a reaction temperature within the reaction chamber below a flameout temperature. In some embodiments, heat and product gases from the oxidation process can be used, for example, to drive a turbine, reciprocating engine, and injected back into the reaction chamber.
365 Citations
26 Claims
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1. An oxidizer for oxidizing fuel, comprising:
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a reaction chamber having (i) one or more inlets that are configured to direct at least one gas of a fuel, oxidant, or diluent, into the reaction chamber and (ii) one or more outlets that are configured to direct reaction products from the reaction chamber; a heater that is configured to maintain a temperature of the at least one gas, the at least one gas being at or before the one or more inlets, to be above an autoignition temperature of a resulting mixture, comprising the at least one gas, within the reaction chamber, wherein the reaction chamber is configured to oxidize the resulting mixture; and a controller configured to output instructions to the reaction chamber to maintain a maximum reaction temperature in the reaction chamber below a flameout temperature of the resulting mixture while a calculated adiabatic temperature is above the flameout temperature by controlling at least one of (i) removal of heat from the reaction chamber or (ii) an inlet temperature of the reaction chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An oxidizer for oxidizing fuel, comprising:
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a reaction chamber having (i) an inlet that is configured to direct at least one gas of a fuel, oxidant, or diluent, into the reaction chamber and (ii) an outlet that is configured to direct reaction products from the reaction chamber; means for maintaining a temperature of an incoming gas, the incoming gas being at or before the inlet, to be above an autoignition temperature of a resulting mixture, comprising the at least one gas, within the reaction chamber, wherein the reaction chamber is configured to oxidize the resulting mixture; and a controller configured to output instructions to the reaction chamber to maintain a maximum reaction temperature in the reaction chamber below a flameout temperature of the resulting mixture while a calculated adiabatic temperature is above the flameout temperature by controlling at least one of (i) removal of heat from the reaction chamber or (ii) an inlet temperature of the reaction chamber. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification