CN111175345A - SOFC tail gas utilization research experiment system - Google Patents
SOFC tail gas utilization research experiment system Download PDFInfo
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- CN111175345A CN111175345A CN202010005869.0A CN202010005869A CN111175345A CN 111175345 A CN111175345 A CN 111175345A CN 202010005869 A CN202010005869 A CN 202010005869A CN 111175345 A CN111175345 A CN 111175345A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention relates to an SOFC tail gas utilization research experiment system, which comprises a gas supply device, a heating device, a combustion device and a measuring device which are sequentially connected, wherein the gas supply device is used for generating compressed air and SOFC tail gas with different component contents; the heating device is used for heating the compressed air and SOFC tail gas; the combustion device is used for mixing SOFC tail gas and compressed air and carrying out combustion reaction; the measuring device is used for measuring the technological parameters of the SOFC tail gas combustion reaction process. Compared with the prior art, the invention can simulate different working conditions of the SOFC galvanic pile, and has the advantages of easy parameter adjustment, accurate control, capability of efficiently configuring SOFC tail gas components and the like.
Description
Technical Field
The invention relates to the technical field of SOFC tail gas utilization, in particular to an SOFC tail gas utilization research experiment system.
Background
The fuel cell is a device for directly converting chemical energy of fuel into electric energy, and is known as a fourth generation power generation technology following water power, firepower and nuclear power. A Solid Oxide Fuel Cell (SOFC) is a third-generation fuel cell system having the highest energy conversion efficiency following a Phosphoric Acid Fuel Cell (PAFC) and a Molten Carbonate Fuel Cell (MCFC), and has the advantages of strong adaptability to fuel, high residual heat temperature, direct utilization for cogeneration, high comprehensive fuel utilization rate, and the like. The SOFC has more development potential in the future power generation market, and the development, research and commercialization of the SOFC are important means for solving the problems of energy conservation and environmental protection in the world.
The exhaust gas exhausted from SOFC contains hydrogen, water vapor, carbon monoxide, carbon dioxide and other gases, and has a temperature of over 700 deg.C, wherein hydrogen and carbon monoxide are flammable gases and can be further utilized. In addition, carbon monoxide is a toxic gas, so that the direct emission has a safety problem, and a reasonable tail gas treatment mode is very important for the popularization and application of the SOFC. However, at present, the research on the effective utilization form and the combustion characteristic of the tail gas is relatively short, a large amount of tail gas is needed for experimental tests in mature technical application, but the acquisition of low-concentration combustible gas with high temperature and high water vapor components, such as SOFC tail gas, is relatively difficult, and the most ideal mode is to use the tail gas of the fuel cell for research, but the SOFC cell stack needs to be purchased, so that the cost is high, the service life is short (2-3 years), and the research on the reutilization of the tail gas discharged by the SOFC is not facilitated.
At present, there is a three-electrode cofiring SOFC and a preparation method thereof (CN110137551A) in the prior patent, which combines a proper amount of iron oxide doped in an electrolyte with a cold sintering technique to lower a sintering temperature and realize three-electrode cofiring of an anode, an electrolyte and a cathode at 1150 ℃, but the problem of utilizing the SOFC tail gas is not discussed. The device also refers to a patent "SOFC fuel cell tail gas recycling device (CN 107195936A)", which burns combustible components in fuel cell tail gas for power generation and chemical raw material production, but does not relate to feasibility analysis when tail gas components are changed.
Disclosure of Invention
The invention aims to provide an SOFC tail gas utilization research experiment system for overcoming the defects of high temperature, incapability of effectively utilizing and difficult acquisition of SOFC system tail gas in the prior art.
The purpose of the invention can be realized by the following technical scheme:
an SOFC tail gas utilization research experiment system comprises a gas supply device, a heating device, a combustion device and a measuring device which are sequentially connected, wherein the gas supply device is used for generating compressed air and SOFC tail gas with different component contents; the heating device is used for heating the compressed air and SOFC tail gas; the combustion device is used for mixing SOFC tail gas and compressed air and carrying out combustion reaction; the measuring device is used for measuring the technological parameters of the SOFC tail gas combustion reaction process.
The gas supply device comprises a gas supply mechanism, a steam supply mechanism, an air supply mechanism and an ejector which is connected with gas outlet pipelines of the gas supply mechanism and the steam supply mechanism; the gas at the gas outlet of the ejector is the SOFC tail gas; the air supply mechanism generates compressed air.
The gas supply mechanism comprises a natural gas pipeline connected with a natural gas source, a high-precision real-time gas distribution instrument (MFC), and a hydrogen gas storage bottle, a carbon monoxide gas storage bottle and a carbon dioxide gas storage bottle which are connected with the high-precision real-time gas distribution instrument; the steam supply mechanism comprises a steam generator and a steam pipeline connected with the steam generator; the air supply mechanism comprises an air compressor and an air pipeline connected with the air compressor.
The natural gas pipeline is provided with a pressure gauge, a membrane type gas flow meter and a stop valve; the steam pipeline is provided with a pressure gauge, an orifice plate flowmeter and a pressure reducing valve; and a pressure stabilizing valve, a pressure gauge and a rotor flow meter are arranged on the air pipeline.
According to the characteristics of different gas media, the gas meters with different structures are respectively matched, namely a membrane type gas meter for gas, a pore plate flow meter for measuring water vapor and a rotor flow meter for measuring air; the flow of hydrogen and carbon monoxide is measured by a high-precision real-time gas distribution instrument. Through the set of measuring mechanism, accurate measurement of each raw material gas can be realized, so that the accuracy of experimental data is ensured.
The heating device comprises an SOFC tail gas heating mechanism connected with the ejector and an air heating mechanism connected with the air supply mechanism; the SOFC tail gas heating mechanism comprises a first natural gas full-premixing combustor and a first heat exchanger connected with the first natural gas full-premixing combustor, and a gas outlet of the ejector is connected with the first heat exchanger through a pipeline; the air heating mechanism comprises a second natural gas fully-premixed burner and a second heat exchanger connected with the second natural gas fully-premixed burner, and the air supply mechanism is connected with the second heat exchanger through a pipeline.
The heating device further comprises a burner power controller in signal connection with the first natural gas full premix burner, the second natural gas full premix burner and the ejector.
The combustion device comprises a combustor, wherein the combustor comprises a premixing section and a combustion section; and the SOFC tail gas and the compressed air are mixed in the premixing section and then enter the combustion section for combustion.
The premixing section comprises a premixing chamber and a metal fiber plate arranged in the premixing chamber, and the premixing chamber is provided with an SOFC tail gas inlet and a compressed air inlet; the combustion section includes the combustion chamber and locates foam porous ceramic plate and some firearm in the combustion chamber, be equipped with on the combustion chamber and supply flue gas exhaust gas outlet.
The measuring device comprises thermocouples for measuring the temperature of the gas in the combustion chamber and the premixing chamber, a pressure sensor for measuring the pressure in the combustion chamber and a flue gas analyzer for measuring the components of the flue gas.
The flowmeters for measuring the gas flow are respectively arranged on the corresponding gas pipelines.
The thermocouple is a K-type thermocouple.
The invention is a set of gas distribution test device, can realize the simulation and test of tail gas of the SOFC system under different working conditions, further can research the recycling of the tail gas, and is beneficial to the long-term development of the SOFC power generation system.
The gas supply device of the present invention utilizes hydrogen gas H2Carbon monoxide CO and carbon dioxide CO2And gases such as water vapor and air are mixed according to different proportions so as to simulate the components of the outlet tail gas of the fuel cell under different working conditions. Wherein hydrogen, carbon monoxide andthe carbon oxide is provided by a gas cylinder, and the flow is controlled by a high-precision real-time gas distribution system; the water vapor is generated by a water vapor generator, and the flow is regulated by a valve switch and a high-precision orifice plate flowmeter; the air is controlled and regulated by an air compressor and a rotameter. The gas distribution proportion can be adjusted in real time according to the working condition change of the SOFC.
The heating device can reduce the temperature of the SOFC outlet tail gas of the fuel cell, the SOFC outlet tail gas of the fuel cell is at a high temperature of more than 700 ℃, so that the working condition property of the SOFC outlet tail gas can be well reduced, the high-temperature characteristic of the SOFC outlet tail gas can be simulated, the experimental device adopts two natural gas fully-premixed combustors to heat, one of the natural gas fully-premixed combustors heats compressed air, the other natural gas fully-premixed combustor heats mixed gas and water vapor, and the heated gas is introduced into the combustors to be premixed and combusted. Compared with the high-temperature electric heating technology, the method has the defects of excessive high-grade electric energy consumption, slow heating speed, generally heating temperature not exceeding 600 ℃ and the like; the gas full-premixing combustion heating technology has the advantages of high heating speed, high temperature (which can easily reach the high temperature of more than 1000 ℃), low cost and the like.
The injection device can realize H with different proportions2The proportion of the fuel gas fuel cell stack and the water vapor component is adjusted, the change of the tail gas component of the SOFC stack in different conversion rates is realized, a combustor power controller is connected between the ejector and the full-premixing combustor, the heating power of the full-premixing combustor can be adjusted according to the required temperature of mixed gas, controllable temperature level is guaranteed, and meanwhile, the temperature of the stack in different working states can be controlled.
The principle of the research on the SOFC tail gas reutilization is as follows: if can stable combustion under the tail gas component of certain extent in this experiment the combustor, then guarantee the mixing proportion of fuel cell tail gas, and set up control system, the pressure variation carries out combustor air feed regulation behind fuel cell's the operating condition and the combustor, guarantee the sustainable of burning, to large-scale fuel cell pile, can consider to increase the combustor size or adopt the multi-burner form, the heat that utilizes the burning to emit heats fuel cell's reforming unit, can improve fuel cell device's overall efficiency, realize low calorific value gas's clean processing, realize the clean effective use of the energy, will have important meaning, be favorable to providing design parameter for burner's design. By adopting the method, the physical property parameters of the fuel cell tail gas and the regular relationship between the selection and the design of the combustor can be obtained in advance, so that the SOFC tail gas is more efficiently utilized.
Compared with the prior art, the invention has the following advantages;
(1) according to the invention, the component proportion of the tail gas can be adjusted according to the change of different working conditions of the SOFC, so that the reutilization research of SOFC tail gas with different components can be realized, the gas supply device can accurately measure the flow of high-temperature steam, the whole set of device can simply and efficiently configure the SOFC tail gas components, the effective utilization of the tail gas with different components in change can be researched, and the tail gas components and the characteristics of the fuel cell can be simulated through a reasonable tail gas distribution device, so that the reutilization of the SOFC tail gas is facilitated;
(2) the temperature of SPFC tail gas and compressed air is increased by adopting gas full-premix combustion, and the gas full-premix combustion has the advantages of high heating speed, high efficiency and low energy consumption;
(3) according to the invention, the natural gas full-premix burner is adopted for heating the tail gas, so that the high-temperature control of the tail gas can be realized, and the device has the characteristics of rapid heating and low cost; the integrated differential pressure type flowmeter can accurately measure the flow of high-temperature steam, and the whole device can simply and efficiently configure SOFC tail gas components and help to explore effective utilization of tail gas with different components when the tail gas changes.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure, 1 is a gas supply device, 11 is a carbon dioxide gas cylinder, 12 is a carbon monoxide gas cylinder, 13 is a hydrogen gas cylinder, 14 is a steam generator, 15 is a natural gas source, 16 is a membrane type gas flowmeter, 17 is a stop valve, 18 is a high-precision real-time gas distributor, 19 is a reducer, 110 is a bypass valve, 111 is an orifice flowmeter, 112 is a pressure reducing valve, 113 is an ejector, 114 is a pressure stabilizing valve, 115 is a pressure gauge, 116 is an air compressor, 117 is a rotor flowmeter, 2 is a heating device, 21 is a first natural gas full premix burner, 22 is a first heat exchanger, 23 is a second natural gas full premix burner, 24 is a second heat exchanger, 25 is a burner power controller, 3 is a combustion device, 31 is a premix chamber, 32 is a metal fiber plate, 33 is a combustion chamber, 34 is a foam porous ceramic plate, 35 is an igniter, 4 is a measuring device, 41 is a thermocouple, 42 is a pressure sensor, 43 is a flue gas analyzer, 44 is a data acquisition board, and 45 is a computer.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Examples
An experimental system for research and utilization of SOFC tail gas, as shown in fig. 1, includes a gas supply device 1, a heating device 2, a combustion device 3, and a measurement device 4, which are connected in sequence.
The gas supply device 1 is used for generating compressed air and SOFC tail gas with different component contents, and the gas supply device 1 comprises a gas supply mechanism, a steam supply mechanism, an air supply mechanism and an ejector 113 connected with gas outlet pipelines of the gas supply mechanism and the steam supply mechanism; the gas at the gas outlet of the ejector 113 is SOFC tail gas; the air supply mechanism generates compressed air. The gas supply mechanism comprises a natural gas pipeline connected with a natural gas source 15, a high-precision real-time gas distribution instrument 18, and a hydrogen gas storage bottle 13, a carbon monoxide gas storage bottle 12 and a carbon dioxide gas storage bottle 11 which are connected with the high-precision real-time gas distribution instrument 18, wherein in a laboratory, the hydrogen gas storage bottle 13, the carbon monoxide gas storage bottle 12 and the carbon dioxide gas storage bottle 11 are all steel bottles; the water vapor supply mechanism comprises a steam generator 14 and a steam pipeline connected with the steam generator 14; the air supply mechanism includes an air compressor 115 and an air duct connected to the air compressor 115.
In order to perform more accurate flow control, the natural gas pipeline is provided with a pressure gauge 115, a flow meter 16 and a stop valve 17; the steam pipeline is provided with an integrated differential pressure type flowmeter, a reducer pipe 19 can be arranged according to the pipe diameter difference between the pipe orifice of the steam generator 14 and the steam pipeline to connect the pipe orifice and the steam pipeline, the integrated differential pressure type flowmeter specifically comprises a stop valve 17, a bypass pipeline, a pressure gauge 115, an orifice plate flowmeter 111, a pressure reducing valve 112 and the stop valve 17 which are sequentially arranged along the flow direction of the steam, and the bypass pipeline is also provided with a bypass valve 110; the air pipeline is provided with a pressure stabilizing valve 114, a stop valve 17, a pressure gauge 115, a rotor flow meter 117 and the stop valve 17.
In the gas supply device 1 of the embodiment, hydrogen, carbon monoxide and carbon dioxide are provided by a gas steel cylinder, the proportion is adjusted by a high-precision real-time gas distribution system, natural gas is provided by a pipeline, the gas component at the initial stage only contains hydrogen, the gas component is changed according to the experiment progress condition, gases such as carbon monoxide, carbon dioxide and pipeline natural gas are added, and a water vapor system comprises a water vapor generator, a valve, a pressure gauge, a flowmeter and other parts and can provide high-temperature water vapor; the air system comprises components such as an air compressor, a rotor flow meter, a pressure gauge, a valve and the like, wherein the air compressor can generate 2Mpa compressed air.
The invention utilizes hydrogen H2Carbon monoxide CO and carbon dioxide CO2And gases such as water vapor and air are mixed according to different proportions so as to simulate the components of the outlet tail gas of the fuel cell under different working conditions. Wherein, the hydrogen, the carbon monoxide and the carbon dioxide are provided by a gas steel cylinder, and the flow is controlled by a high-precision real-time gas distribution system and a rotor flow meter; the water vapor is generated by a water vapor generator, and the flow is regulated by a valve switch and a high-precision orifice plate flowmeter; the air is controlled and regulated by an air compressor and a rotameter. The gas distribution proportion can be adjusted in real time according to the working condition change of the SOFC.
The heating device 2 is used for heating compressed air and SOFC tail gas and comprises an SOFC tail gas heating mechanism connected with the ejector 113 and an air heating mechanism connected with an air supply mechanism; the SOFC tail gas heating mechanism comprises a first natural gas full-premixing combustor 21 and a first heat exchanger 22 connected with the first natural gas full-premixing combustor 21, and a gas outlet of the ejector 113 is connected with the first heat exchanger 22 through a pipeline; the air heating mechanisms respectively comprise a second natural gas fully-premixed burner 23 and a second heat exchanger 24 connected with the second natural gas fully-premixed burner 23, and the air supply mechanisms are connected with the second heat exchanger 24 through pipelines. The heating device 2 further comprises a burner power controller 25 in signal connection with the first natural gas full premix burner 21, the second natural gas full premix burner 23 and the ejector 113.
The heating device consists of two fully premixed combustion devices, the mixed gas of gas and steam and compressed air are respectively heated, a combustor power controller is connected between the ejector and the fully premixed combustor, the heating power can be adjusted according to the proportion and the flow condition of the gas and the steam, and the temperature of tail gas is controlled. The fuel cell SOFC outlet tail gas is high temperature above 700 ℃, in order to better reduce the working condition property, the high temperature characteristic of the fuel cell outlet tail gas is simulated, the experimental device adopts two natural gas fully-premixed combustors to heat, one of the combustors heats compressed air, the other heats mixed fuel gas and water vapor, and the heated gas is introduced into the combustor to be premixed and combusted. Compared with the high-temperature electric heating technology, the method has the defects of excessive high-grade electric energy consumption, slow heating speed, generally heating temperature not exceeding 600 ℃ and the like; the gas full-premixing combustion heating technology has the advantages of high heating speed, high temperature which can easily reach over 1000 ℃, low cost and the like. The ejector can realize H with different proportions2The proportion of the fuel gas fuel cell stack and the water vapor component is adjusted, the change of the tail gas component of the SOFC stack in different conversion rates is realized, a combustor power controller is connected between the ejector and the full-premixing combustor, the heating power of the full-premixing combustor can be adjusted according to the required temperature of mixed gas, controllable temperature level is guaranteed, and meanwhile, the temperature of the stack in different working states can be controlled.
The combustion device 3 is used for mixing the SOFC tail gas and the compressed air and performing a combustion reaction; the measuring device 4 is used for measuring technological parameters of the SOFC tail gas combustion reaction process; comprises a combustor, wherein the combustor comprises a premixing section and a combustion section; and mixing the SOFC tail gas and the compressed air in the premixing section, and then entering the combustion section for combustion. The premixing section comprises a premixing chamber 31 and a metal fiber plate 32 arranged in the premixing chamber 31, wherein the premixing chamber 31 is provided with an SOFC tail gas inlet and a compressed air inlet; the combustion section comprises a combustion chamber 33, a foam porous ceramic plate 34 and an igniter 35 which are arranged in the combustion chamber 33, and a gas outlet for discharging flue gas is arranged on the combustion chamber 33. The measuring device 4 comprises a thermocouple 41 for measuring the gas temperature in the combustion chamber 33 and the premixing chamber 31, a pressure sensor 42 for measuring the pressure in the combustion chamber 33 and a flue gas analyzer 43 for measuring the flue gas composition; the thermocouple 41 is a type K thermocouple 41. The pressure sensor 42 and the thermocouple 41 are both connected to a data acquisition board 44, and the data acquisition board 44 is further connected to a computer 45.
The main body of the combustion device is a combustor, which comprises a premixing section and a combustion section, wherein heated gas, water vapor and air are mixed in the premixing section and are combusted in a porous medium of the combustion section. The measuring system comprises four parts of temperature measurement, pressure measurement, flow measurement and flue gas component measurement, wherein the temperature is measured by adopting a K-type thermocouple and is transmitted and stored in real time through a data acquisition system, and data such as pressure, flow, flue gas component and the like are respectively measured in real time by a pressure gauge, a flowmeter and a flue gas analyzer.
The test system of this embodiment can adjust the tail gas component proportion according to the change of SOFC different operating modes, the gas full premix burning rate of heating is fast, high efficiency, the energy consumption is low, if can stably burn under the tail gas component of certain scope in this experiment, then also can carry out appropriate improvement with it, use on large-scale fuel cell pile, utilize it to handle tail gas, and utilize the heat that the burning was given off to come to heat fuel cell's reforming plant, can improve fuel cell device's overall efficiency, realize the clean processing of low calorific value gas, realize the clean effective use of the energy, will have epoch-making meaning.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. The SOFC tail gas utilization research experiment system is characterized by comprising a gas supply device (1), a heating device (2), a combustion device (3) and a measuring device (4) which are sequentially connected, wherein the gas supply device (1) is used for generating compressed air and SOFC tail gas with different component contents; the heating device (2) is used for heating the compressed air and SOFC tail gas; the combustion device (3) is used for mixing SOFC tail gas and compressed air and carrying out combustion reaction; the measuring device (4) is used for measuring the technological parameters of the SOFC tail gas combustion reaction process.
2. The SOFC tail gas utilization research experiment system according to claim 1, wherein the gas supply device (1) comprises a gas supply mechanism, a steam supply mechanism, an air supply mechanism and an ejector (113) connected with gas outlet pipelines of the gas supply mechanism and the steam supply mechanism; the gas at the gas outlet of the ejector (113) is the SOFC tail gas; the air supply mechanism generates compressed air.
3. The SOFC tail gas utilization research experiment system of claim 2, wherein the gas supply mechanism comprises a natural gas pipeline connected with a natural gas source (15), a high-precision real-time gas distributor (18), and a hydrogen gas storage cylinder (13), a carbon monoxide gas storage cylinder (12) and a carbon dioxide gas storage cylinder (11) connected with the high-precision real-time gas distributor (18); the water vapor gas supply mechanism comprises a steam generator (14) and a steam pipeline connected with the steam generator (14); the air supply mechanism comprises an air compressor (115) and an air pipeline connected with the air compressor (115).
4. The SOFC tail gas utilization research experiment system of claim 3, wherein the natural gas pipeline is provided with a pressure gauge (115), a membrane type gas flow meter (16) and a stop valve (17); the steam pipeline is provided with a pore plate flowmeter (111); and a pressure stabilizing valve (114), a pressure gauge (115) and a rotor flow meter (117) are arranged on the air pipeline.
5. The SOFC tail gas utilization research experiment system according to claim 2, wherein the heating device (2) comprises a SOFC tail gas heating mechanism connected with the ejector (113) and an air heating mechanism connected with the air supply mechanism; the SOFC tail gas heating mechanism comprises a first natural gas full-premix burner (21) and a first heat exchanger (22) connected with the first natural gas full-premix burner (21), and a gas outlet of the ejector (113) is connected with the first heat exchanger (22) through a pipeline; the air heating mechanism comprises a second natural gas fully-premixed burner (23) and a second heat exchanger (24) connected with the second natural gas fully-premixed burner (23), and the air supply mechanism is connected with the second heat exchanger (24) through a pipeline.
6. The SOFC tail gas utilization research experiment system of claim 5, wherein the heating device (2) further comprises a burner power controller (25) in signal connection with the first natural gas fully premixed burner (21), the second natural gas fully premixed burner (23) and the ejector (113).
7. SOFC exhaust gas utilization research experiment system according to claim 1, characterized by the combustion arrangement (3) comprising a burner comprising a premixing section and a combustion section; and the SOFC tail gas and the compressed air are mixed in the premixing section and then enter the combustion section for combustion.
8. The SOFC tail gas utilization research experiment system of claim 7, wherein the premixing section comprises a premixing chamber (31) and a metal fiber plate (32) arranged in the premixing chamber (31), and the premixing chamber (31) is provided with an SOFC tail gas inlet and a compressed air inlet; the combustion section includes combustion chamber (33) and locates foam porous ceramic plate (34) and igniter (35) in combustion chamber (33), be equipped with on combustion chamber (33) and supply the exhaust gas outlet of flue gas.
9. SOFC exhaust gas utilization research experiment system according to claim 8, characterized by the measuring device (4) comprising a thermocouple (41) for measuring the gas temperature in the combustion chamber (33) and the premixing chamber (31), a pressure sensor (42) for measuring the pressure in the combustion chamber (33) and a flue gas analyzer (43) for measuring the flue gas composition.
10. The SOFC exhaust utilization research experiment system according to claim 9, wherein the thermocouple (41) is a type K thermocouple (41).
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| CN112285158A (en) * | 2020-10-29 | 2021-01-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Device and method for testing combustion characteristics of metallurgical gas |
| CN114023997A (en) * | 2021-10-19 | 2022-02-08 | 苏州氢澜科技有限公司 | Ejector for fuel cell air circulation and use method thereof |
| CN116908240A (en) * | 2023-07-06 | 2023-10-20 | 浙江省计量科学研究院 | Heat value measuring device and method based on fuel cell |
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