TH31474A - The processes for generating power include the combustion process. - Google Patents

Abstract

DC60 (10/11/40) This invention relates to a process for generating power and/or heat in a combustion process where fuel is combusted with an oxidant, a gaseous mixture of O2/CO2/H2O, supplied from a composite acting membrane capable of separating oxygen from the oxygen-containing gaseous mixture at elevated temperatures. Oxygen is taken from the permeable side of the membrane via a gas flow pathway. The gas flow is a product or a fraction of a product from at least one combustion process. The membrane gas flow pathway can be generated by mixing the recycled fraction of the oxygen-containing exhaust gas and fuel, which is passed over a combustion machine or catalytic or non-catalytic combustion machine. The resulting exhaust gases have high CO2 concentrations and low NOx concentrations. The exhaust gas flow is suitable for direct use in different processes or for injection in geological formations, for long-term deposition, or for increased natural gas and oil extraction. This invention relates to a process for generating power and/or heat in a combustion process where fuel Combustion occurs with an oxidant, a gaseous mixture of O2/CO2/H2O, supplied from an acting membrane. This membrane's ability to separate oxygen from the oxygen-containing gaseous mixture at higher temperatures is achieved. Oxygen is taken from the permeable side of the membrane via the gas flow pathway. The gas flow is a product or a fraction of the products from a minimal number of combustion processes. Membrane gas flow can be generated by mixing the recycled fraction of the exhaust gas with oxygen and fuel, which is passed over a combustion machine, with or without a catalytic converter. This process produces exhaust gases with high CO2 concentrations and low NOx concentrations. The exhaust gas flow is suitable for direct use in various processes, or for injection into geological formations for long-term deposition, or for increased natural gas and oil extraction.

Claims (10)

1. The process for generating power and/or heat in a combustion process where fuel is combusted with an oxidant, and further developed with improved methods for reducing carbon dioxide and nitrogen oxide emissions from such combustion. This is characterized by a gaseous mixture of O2/CO2/H2O being used as an oxidant in the combustion process, and this gaseous mixture being supplied from an acting membrane, which is capable of separating oxygen from the oxygen-containing gaseous mixture at higher temperatures, and where oxygen is received from the transmissive side of the membrane via the gas flow path. 2. The process under claim 1, which is characterized by the passage of a gas as a product, or a portion of a product, from at least one combustion process, the initial membrane acting on the mixture. 3. The process described in Claim 1, which is characterized by the passage of gases by the recycle of the emitted gases containing oxygen and fuel, which is passed through a combustion chamber or catalytic or non-catalytic combustion chamber. 4. The process under claim 1, which is characterized by the passage of gases, is used in the significant portion of the released gases, which are expanded or partially expanded by the first and second combustion processes at the membrane source. 5. The process under claim 1, which is characterized by the passage of gases as emissions from an indirectly burned heat source. 6. The process described in Claim 1 is characterized by the removal of emitted gases containing more than 90% CO2 by volume from the process. 7. The process described in Claim 1 is characterized by air and fuel being fed into the combustion engine, and the resulting mixture/air being fed to the feed side of an acting membrane where the oxygen is depleted, resulting in an emitted gas predominantly nitrogen and CO2. 8. The process described in Claim 1 is characterized by the removal of oxygen and water from the emitted gas, resulting in an emitted gas containing 95-100% CO2. 9. Use of process emissions for power and/or heat generation in combustion processes where fuel is combusted with oxidants as per claims 1-8, where emissions contain more than 90% CO2 by volume, for the purpose of increasing natural gas and oil yields, or for injection into geological formations. 10. The use of gases released from the process under Claim 9, where the released gases contain CO2 and also oxygen, which may, in chemical processes, act as oxidants or neutrons (Claim 10, Figure).