초록 ▼

Exemplary embodiments of the present technology provide systems and methods for producing power from coalbed methane (CBM) with decreased CO2 emissions. For example, a method of producing power according to an exemplary embodiment includes converting a feedstock from a hydrocarbon source into a gas

Exemplary embodiments of the present technology provide systems and methods for producing power from coalbed methane (CBM) with decreased CO2 emissions. For example, a method of producing power according to an exemplary embodiment includes converting a feedstock from a hydrocarbon source into a gas mixture comprising CO2 and H2. The gas mixture is injected into a coalbed to cause CBM to desorb from the coal and CO2 to adsorb onto the coal. The hydrocarbon source is separate from the coalbed, i.e., does not exchange hydrocarbons with the hydrocarbon source. A gas mixture is produced from the coalbed, wherein the produced gas mixture includes H2 and CH4. The gas mixture may be combusted to generate power, while releasing lower amounts of CO2 than would be released from the combustion of pure CH4.

대표청구항 ▼

1. A system for generating a gas suitable for producing power from a coalbed, comprising: a hydrocarbon source;a chemical convertor in fluid communication with the hydrocarbon source configured to convert a feedstock from the hydrocarbon source into a gas mixture comprising CO2 and H2;an injection w

1. A system for generating a gas suitable for producing power from a coalbed, comprising: a hydrocarbon source;a chemical convertor in fluid communication with the hydrocarbon source configured to convert a feedstock from the hydrocarbon source into a gas mixture comprising CO2 and H2;an injection well in direct fluid communication with both the chemical converter and the coalbed configured to inject the gas mixture comprising CO2 and H2 into the coalbed;the coalbed configured to receive the gas mixture and adsorb and sequester a portion of the CO2 in the coalbed, wherein the coalbed is separate from the hydrocarbon source;a production well configured to harvest a production gas from the coalbed, wherein the production gas comprises H2 and CH4 and wherein the production gas comprises greater than about 10 mole H2 and greater than about 10 mole % CH4, wherein the composition of the production gas is on a dry basis; anda pipeline directly connecting the production well to a combustion apparatus that powers an electrical generator, the pipeline configured to deliver the harvested production gas to the combustion apparatus, wherein the pipeline does not have a recycle means with the coalbed. 2. The system of claim 1, wherein the hydrocarbon source comprises a natural gas reservoir, a first coalbed, an oil reservoir, a waste processing facility, or any combinations thereof. 3. The system of claim 1, wherein the chemical convertor comprises an auto-thermal reformer, a steam reformer, a pressure swing reformer, or any combinations thereof. 4. The system of claim 1, wherein the chemical convertor comprises a partial oxidation unit. 5. The system of claim 1, further comprising a cracking unit configured to produce the feedstock. 6. The system of claim 1, wherein the feedstock comprises natural gas, coal, oil, a carbonaceous waste material, or any combinations thereof. 7. The system of claim 1, further comprising a treatment facility configured to treat the production gas to remove particulates, CO water, heavy-end hydrocarbons, or any combinations thereof. 8. The system of claim 1, further comprising a pipeline to convey the production gas to a power plant. 9. The system of claim 1, further comprising an electric power generation system configured to be fed by the production gas.