Fuel cell-based system for generating electrical power
A fuel cell and feed material technology, applied in fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problems of uncaptured and lost heat energy
Inactive Publication Date: 2011-01-12
SHELL INT RES MAATSCHAPPIJ BV
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However, almost 50% of the thermal energy provided by combustion is not captured and lost
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[0065] The present invention provides an efficient method for generating electricity from liquid hydrocarbon fuels at high power density in systems utilizing solid oxide fuel cells. Firstly, the method of the present invention is more thermally efficient than the methods disclosed in the prior art. Thermal energy from the fuel cell exhaust is transferred directly into the pre-reforming reactor, and a portion of this thermal energy is subsequently transferred from the pre-reforming reactor to the reforming reactor. Alternatively, thermal energy can also be transferred directly from the fuel cell to the reforming reactor. The direct transfer of thermal energy from the fuel cell's anode exhaust to the pre-reforming reactor is efficient because the transfer is by combining the hot anode exhaust stream from the fuel cell with the feed precursor and This is accomplished by direct molecular mixing of the steam to generate the feed that is then supplied to the reforming reactor. The...
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The present invention relates to a solid oxide fuel cell system. The system includes a pre-reforming reactor, a reforming reactor, a hydrogen separation apparatus and a solid oxide fuel cell. The anode exhaust outlet of the solid oxide fuel cell is operatively connected to an inlet of the pre-reforming reactor so anode exhaust from the fuel cell may enter the pre-reforming reactor. The pre-reforming reactor also has an inlet for a hydrocarbon feed precursor. The reforming reactor is operatively coupled to the pre-reforming reactor so that a feed produced in the pre-reforming reactor from the feed precursor may be fed to the reforming reactor. The reforming reactor is operatively connected to the hydrogen separation apparatus so that hydrogen produced in the reforming reactor may be separated from the reformed product gases. The anode inlet of the solid oxide fuel cell is operatively connected to the hydrogen separation apparatus so hydrogen may be fed from the hydrogen separation apparatus as fuel to the solid oxide fuel cell.
Description
technical field [0001] The present invention relates to fuel cell systems for generating electrical power, and to methods for generating electrical power. In particular, the present invention relates to solid oxide fuel cell systems for generating electrical power and methods of generating electrical power using the systems. Background technique [0002] A solid oxide fuel cell is a fuel cell composed of solid-state components that generate electricity directly from electrochemical reactions. Such fuel cells are useful because they supply high quality reliable electricity, operate cleanly, and are relatively compact power generating devices, making them attractive for use in urban areas. [0003] A solid oxide fuel cell is formed from an anode, a cathode, and a solid electrolyte sandwiched between the anode and cathode. An oxidizable fuel gas, or a gas that can be reformed into an oxidizable fuel gas in the fuel cell, is supplied to the anode, and an oxygen-containing gas ...
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IPC IPC(8): H01M8/06
CPCC01B2203/1258C01B2203/0475H01M8/0662C01B2203/142H01M8/04007H01M8/0612C01B2203/041C01B2203/043C01B3/38Y02E60/50C01B3/382C01B2203/0827C01B2203/0833C01B2203/148C01B2203/0283C01B2203/066H01M8/04097C01B2203/0261Y02E60/525C01B2203/1058H01M2008/1293C01B2203/0233C01B2203/1604
Inventor 崔晶瑜E·E·恩沃尔M·L·乔希S·L·韦林顿
Owner SHELL INT RES MAATSCHAPPIJ BV