초록 ▼

The process and system of the invention converts carbonaceous feedstock from fossil fuels and other combustible materials into electrical energy without the production of unwanted greenhouse emissions. The process and system uses a combination of a gasifier to convert the carbonaceous feedstock and

The process and system of the invention converts carbonaceous feedstock from fossil fuels and other combustible materials into electrical energy without the production of unwanted greenhouse emissions. The process and system uses a combination of a gasifier to convert the carbonaceous feedstock and a greenhouse gas stream into a synthesis gas comprising carbon monoxide and hydrogen. One portion of the synthesis gas from the gasifier becomes electrochemically oxidized in an electricity-producing fuel cell into an exit gas comprising carbon dioxide and water. The latter is recycled back to the gasifier after the water is condensed out. The second portion of the synthesis gas from the gasifier is converted into useful hydrocarbon products.

대표청구항 ▼

[ What is claimed is:] [1.] A process for convering carbonaceous feedstock into energy without the production of greenhouse gas emissions comprising:(a) converting a carbonaceous feedstock selected from the group consisting of coal, hydrocarbon oil, natural gas, petroleum coke, oil shale, carbonaceo

[ What is claimed is:] [1.] A process for convering carbonaceous feedstock into energy without the production of greenhouse gas emissions comprising:(a) converting a carbonaceous feedstock selected from the group consisting of coal, hydrocarbon oil, natural gas, petroleum coke, oil shale, carbonaceous-containing waste oil, carbonaceous-containing hazardous waste, carbonaceous-containing medical waste, and mixtures thereof and a greenhouse gas stream in a gasification unit to synthesis gas comprising carbon monoxide and hydrogen;(b) electrochemically oxidizing at least a portion of said synthesis gas from said gasification unit in a first half-cell of a fuel cell to a first half-cell exit comprising carbon dioxide and water;(c) recovering the carbon dioxide from said first half-cell exit gas to serve as at least a portion of said greenhouse gas stream in step (a); and(d) electrochemically reducing an oxygen-containing gas in a second half-cell of said fuel cell completing the circuit and resulting in the production of electrical energy.