Device for combustion of a carbon containing fuel in a nitrogen free atmosphere and a method for operating said device
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Abstract
The present invention relates to a device for combustion of a carbon containing fuel in a nitrogen free atmosphere, and a method for operating said device. The device may be integrated with a power generation plant (i.e. gas turbine(s)) to obtain an energy efficient process for generation of power with reduced emission of carbon dioxide and NOx to the atmosphere. Furthermore, the device may be integrated with a chemical plant performing endothermic reactions.
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Citations
32 Claims
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1-17. -17. (Cancelled).
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18. A device for combustion of a carbon containing fuel in a nitrogen free atmosphere, wherein said device comprises a hollow shell having an inlet for conveying said fuel, an inlet for conveying a compressed oxygen containing gas stream, an outlet for discharging an oxygen depleted gas stream and an outlet for discharging a bleed stream;
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and said shell encloses one or more heat exchange modules arranged to heat the incoming compressed oxygen containing gas stream;
one or more mixed conducting membrane modules arranged to separate oxygen from said oxygen containing gas stream resulting in an oxygen rich gas stream and said oxygen depleted gas stream;
a first and possibly a second combustion chamber for combustion of said fuel having an inlet connected to said inlet for fuel to convey fuel to said chamber, an inlet connected to said heat exchange module(s) to convey hot oxygen rich gas to said chamber and an outlet connected to said membrane module(s) to convey exhaust gas from the combustion chamber to the membrane module;
a pressure booster installed prior to the first combustion chamber;
means (11,21) for connecting said heat exchanger module(s) and membrane module(s);
means (7,23) for connecting said heat exchanger module(s) and said membrane module(s) to the inlet for the compressed oxygen containing gas stream and the outlet for the oxygen depleted gas stream and means for conveying a part of said exhaust gas stream directly to said heat exchange module(s) and back to said inlet from the combustion chamber. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification