US 2008/0184621 A1 · REDUCED-EMISSION GASIFICATION AND OXIDATION OF HYDROCARBON MATERIALS FOR POWER GENERATION

Abstract

A system and process for maximizing the generation of electrical power from a variety of hydrocarbon feedstocks. The hydrocarbon feedstocks are first gasified and then oxidized in a two-chamber system and process using oxygen gas rather than ambient air. Intermediate gases generated in the system and process are recirculated and recycled to the gasification and oxidation chambers in order to maximize energy production. The energy produced through the system and process is used to generate steam and produce power through conventional steam turbine technology. In addition to the release of heat energy, the hydrocarbon feedstocks are oxidized to the pure product compounds of water and carbon dioxide, which are subsequently purified and marketed. The system and process minimizes environmental emissions.

Claims14

Dependent claims

A process for combusting hydrocarbon feedstock streams and recovering the water and carbon dioxide produced during combustion, the process comprising the steps of:

reacting a first hydrocarbon feedstock containing stream with a second stream of substantially pure oxygen in a combustion chamber under conditions producing a reaction product stream comprising carbon dioxide and water vapor;
removing particulate matter from the reaction product stream;
separating the reaction product stream into a recycle stream and an intermediate product stream;
sending the recycle stream back into the combustion chamber after first passing the recycle stream through activated carbon;
scrubbing the intermediate product stream to neutralize and remove acidic impurities;
condensing water vapor from the intermediate product stream;
and
refrigerating the intermediate product stream to condense any remaining water and to liquefy the carbon dioxide.

5 more elements

A system for combusting hydrocarbon feedstock streams and recovering the water and carbon dioxide produced during combustion, the system comprising:

a combustion chamber for reacting a hydrocarbon feedstock and a substantially pure oxygen stream;
a first heat exchanger in fluid communication with said combustion chamber, said first heat exchanger for recovering heat from reaction products of said combustion chamber;
a bag house, downstream of said first heat exchanger, for removing particulate from the reaction products;
a reaction product manifold in fluid communication with said bag house, said manifold comprising a first recirculation line for recycling reaction products to said combustion chamber, and a second product line;
an activated carbon filter in fluid communication with said bag house and said combustion chamber, said activated carbon filter positioned between the manifold and the combustion chamber and arranged and designed to allow the recycled reaction products of the first recirculation line to flow therethrough;
a scrubbing column in fluid communication with said second product line;
a condenser, downstream of said scrubbing column, for condensing water from the reaction product stream;
and
a purification unit, downstream of said condenser, for purifying carbon dioxide from the reaction product stream.

6 more elements

Dependencies are inferred from the claim text.

Reduced-emission gasification and oxidation of hydrocarbon materials for power generation

Life of this patent

Reduced-emission gasification and oxidation of hydrocarbon materials for power generation

Life of this patent

Abstract

Claims14