Patent EP-2360230-A1 (EP)
Inventor: WAIDHAS MANFRED DR
IPC: C07C1/04
Filed: 2010-02-16
Abstract: The method for exploiting emissions of a power plant operated with carbon-based fuel, comprises producing the first emissions comprising carbon-dioxide containing exhaust gas by using an issuer (1) of the plant, where the plant has an electrolysis device (2) for splitting water into hydrogen and oxygen and a chemical reactor (3) arranged downstream to the issuer and electrolysis device and designed to convert a part of the exhaust gases and hydrogen into synthetic basic material or fuel, and supplying the second emissions of the issuer to the electrolysis device and/or chemical reactor. The method for exploiting the emissions of a power plant operated with a carbon-based fuel, comprises producing the first emissions comprising carbon-dioxide containing exhaust gas by using an issuer (1) of the power plant, where the power plant includes an electrolysis device (2) for splitting the water into hydrogen and oxygen and a chemical reactor (3) arranged downstream to the issuer and the electrolysis device and designed for converting a part of the exhaust gases and the hydrogen into a synthetic basic material or fuel, and supplying the second emissions of the issuer to the electrolysis device and/or the chemical reactor in addition to the first emissions containing the part of the exhaust gases for exploitation. A second heat quantity, which is obtained from the second emissions in the form of the waste heat (11) of the issuer, is supplied to the electrolysis device and/or the chemical reactor in addition to a first heat quantity optionally supplied over the first emissions. The second emission is used in the form of the waste heat of a component of the issuer for heating the electrolysis device and/or the chemical reactor. The electrolysis device is partially operated with the second emission in the form of water, which runs out from the issuer. The second emission is partially used in the form of the waste heat of the issuer to produce water vapor outside of the issuer, where the electrolysis device is fed with the water vapor. The oxygen produced in the electrolysis device is partially supplied as oxidation agent (7) to the issuer for its firing. The electrolysis device is supplied with electrical energy from a renewable energy source. The first emission comprises carbon dioxide as the part of the exhaust gases and the synthetic basic material or fuel formed with the exhaust gases is used for firing the issuer. Two different chemical reactors are operated downstream to the electrolysis device for converting the two same or different parts of the exhaust gases and the hydrogen in two different synthetic basic materials or fuels. The carbon dioxide in a first chemical reactor is converted into a hydrocarbon compound or a hydrocarbon derivative with hydrogen as first part of the exhaust gases and the nitrogen in a second chemical reactor is converted to ammonia with hydrogen as the second part of the exhaust gases. The electrolysis device and the chemical reactors are operated at the same pressure level. An independent claim is included for a device for exploiting the emissions of a power plant operated with a carbon-based fuel.