Electrochemical generator

 

(57) Abstract:

Usage: in a small transportable electrochemical generators based on fuel cells with molten carbonate electrolyte. The inventive generator includes a fuel cell 1, the device 2 of the preparation and supply of fuel, a heat insulating housing 3, the radiation casing 4, a profiled screen 5, the first and second burners 6 and 7, the duct 8, the device 9 ignition gas valve and piping 10, screw box 11, end-to-end coaxial channel 12. The fuel cell 1 with the device 2 preparation and supply of fuel, in the form of Converter located inside the radiation of the housing 4. Inside the insulating housing 3 is installed the screen 5 that serves as the bottom of the radiation of the casing, and a heating device made in the form of two burners 6, 7 arranged coaxially one above the other and oriented output nozzles counter. The heat from the burners is accumulated by the screen 5 and the walls of the radiation of the housing 4, the screen and the walls serve as a secondary heat source, which provides highly uniform heating of all fuel cell battery. For more uniform heating of the top variable pitch, installed radiation outside of the housing 4. As fuel in the second burner is used anode gas generated inside the battery. 4 C. p. F.-ly, 1 Il.

The invention relates to electrical generators, fuel cell, in particular, with the molten carbonate electrolyte.

The known device [1 and 2] includes a cartridge of a fuel cell with many racks of fuel cells, each of which contains a number of fuel cells with liquid electrolyte in them, which is subject to crystallization; sealed protection, including a fixed housing surrounding the cartridge of a fuel cell; an electrical heating device installed on the power source, which is placed inside the container. The specified device generates an amount of heat sufficient to create the electrolyte temperature above the crystallization temperature, when the cartridge of the fuel cell is not operating and when the heat arrived in the rack of the fuel element and passed through the rack to the heated element. The fuel cell contains a device for supplying oxidant and fuel, and the storage device of the electrolyte is established between the anode and cathode, where quality is the first cooling channel, electric heating device placed inside the cooling channel and the casing is provided with a device for lifting. At least one electric heating device is located between the Chuck of the fuel elements and the inner surface of the protection, including the container. A heating device are long tubular resistive heaters.

Similar enables the creation of an electrochemical generator, operating at low temperatures with the exception of crystallization of the electrolyte when transporting the generator to the filling stations. This is achieved by using a common electric heater installed inside of a cartridge that protects the fuel cell. The heater generates within the cartridge uniform heating of all of the fuel elements. However, to enable electric heater requires an electrical power source. In addition, for heating the phosphoric acid to 150-205aboutWith require a limited amount of heat that can be obtained by means of an electrical heater.

For electrochemical generators, in most cases, typical working conditions, which are readily available Jarod. With these conditions, the generator must generate electrical energy. Therefore, there may be conditions when there is no external source of energy that does not allow you to use the heater and reduces the degree of autonomy of the electrochemical generator as electric power is produced only during the operation of the generator.

The prototype of the invention is an electrochemical device [3] includes a generation section that contains electrochemical elements, a new line of supply of gaseous fuel, the input line of the gaseous oxidant and at least one recirculation channel used fuel, where the canal recirculation fuel passes through the chamber of the generator, in order to unite with a new line of input fuel for education reformiruemoi mixture, where the camera reformer contains the outer part containing reformiruemoi material, the inner part mainly containing a nozzle mixer and the mixer-diffuser, and the middle portion for receiving fuel, where the nozzle of the mixer and the mixer-diffuser preferably located inside the chamber of the reformer and mostly outside the main part of the apparatus, cetecom with the reforming material, moreover, the nozzle of the mixer can operate at temperatures below 400aboutC.

The disadvantage of the prototype is the creation of excess heat coming into the section generation for heating due to direct effects on the fuel cell heating device, consisting of a nozzle mixer and mixer-diffuser.

The technical result of the invention is expected as providing an economical intense heating of all elements of the battery with the molten electrolyte, the melting temperature of which is approximately 500aboutWith increasing plant efficiency through effective use of convective heat of the anode gas generated in the fuel elements.

The purpose of the invention providing a cost-effective electrochemical generator by providing a highly rational process of heat exchange.

The objective is achieved as follows. Electrochemical generator comprising a housing, which houses the fuel battery, the heating device, the feeder oxidant, preparation and supply of fuel, the fuel battery located in the radiation shield, between the housing and the radiation casing formed by the duct, the means of preparation and supply of fuel is placed between the base of the fuel battery and the bottom of the radiation of the casing, the heating device is made of located coaxially one above the other of the first, second burners and screen output nozzles are oriented oppositely, the screen serves as the bottom of the radiation of the casing and is installed around the second burner inlet nozzle which is connected to the internal anode volume of the fuel battery, and the input of the first nozzle of the burner is connected to the feeder source of fuel. In addition, the screen surface is made of profiled. The duct is formed by a screw insert. The insert is made with a variable step height.

The drawing shows an electrochemical generator in the context, where 1 fuel cells; 2 preparation device and fuel supply (Converter), 3 heat insulating casing 4 radiation shield, 5 profiled screen 6 first burner, 7 second burner, 8 flue, 9 unit of the gas ignition, 10 piping and fittings, 11 screw insert, 12 end-to-end coaxial channel.

The generator works as follows.

The process occurs inside the insulating housing 3. The burner 6 is connected to an external feeder source of fuel (not shown) and is designed to heat the fuel cells 1 of the battery to the melting temperature ele fuel from an external source (not shown). The ignition of the burner 6 is performed by the ignition device 9. Fuel burner 6 should be preferably gas (natural gas, biogas, coke and so on). The products of combustion from the burner 6 fall on a heated profiled screen 5, where additional ignition gases. Profiled screen 5 serves as the main fuel-screen TV and a heat accumulator. The heat from the heater (burner and screen) and radiation casing affects the device 2 preparation and supply of fuel, in the form of Converter. As a result, the Converter selects the fuel gas, the supply of the fuel elements 1.

The products of combustion source gas after wrapping profiled screen 5 evenly washed radiation casing 4 and spiraling gas duct 8 with variable pitch is heated uniformly. Heated profiled screen 5 and the radiation casing 4 are intermediate (secondary) emitters, perceiving heat by convection and selective emission of combustion products (CO, H2O CO2), and emit a continuous spectrum to the heating surfaces located within the radiation of the housing 4. This provides more uniform heating elements 1 and 2, located in R 10. Upon reaching the melting temperature of the electrolyte in the fuel cell 1 to the second burner 7 starts flowing gas from the anode space of the fuel element. The ignition of the burner 7 is a torch burner 6, and also due to the supply of gas to the hot surface of the profiled screen 5. The products of combustion from the burner 7 move along the path of the combustion products of the burner 6. Upon reaching the optimal temperature of the fuel cell 1, the gas supply to the burner 6 is stopped. In the process of the electrochemical generator to maintain the operating temperatures of the burner 6 may be periodically switched on and off. In the burner 6 is a through axial channel 12, through which air is supplied to the burner 7. The most preferred form of radiation casing 4 circular in cross-section.

The invention provides uniform heating of the fuel cell and the Converter prevents local overheating of the elements of the battery and Converter, pipelines, located inside the radiation enclosure allows use as a heat source of the anode gas generated in the fuel cells of the battery.

The invention can be industrially carried out using well-known, the chorus is the materials. The design has received confirmation of such decisions and conclusions created and tested a prototype.

1. ELECTROCHEMICAL GENERATOR comprising a housing, which houses the battery, the heating device, the feeder oxidant, prepare and submit to the battery fuel fuel battery located in the radiation shield, between the housing and the radiation casing formed flue and heating device placed outside the radiation casing, characterized in that the treatment device and the fuel is placed between the base of the fuel battery and the bottom of the radiation of the casing, the heating device is made of located coaxially one above the other of the first, second burners and screen output nozzles are oriented oppositely, the screen serves as the bottom of the radiation of the casing and is installed around the second burner, the input nozzle which is connected to the internal anode volume of the fuel battery, and the input of the first nozzle of the burner is connected to the feeder source of fuel.

2. Generator under item 1, characterized in that the screen surface is made of profiled.

3. Generator under item 1, characterized in that the duct is formed a screw is on top.

5. Generator under item 1, wherein the first burner is formed through the coaxial channel.

 

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