CN115324736A - Combined power generation system of intercooler and fuel cell gas turbine and working method - Google Patents
Combined power generation system of intercooler and fuel cell gas turbine and working method Download PDFInfo
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- CN115324736A CN115324736A CN202210979518.9A CN202210979518A CN115324736A CN 115324736 A CN115324736 A CN 115324736A CN 202210979518 A CN202210979518 A CN 202210979518A CN 115324736 A CN115324736 A CN 115324736A
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- 238000010248 power generation Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 203
- 239000001257 hydrogen Substances 0.000 claims abstract description 75
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 75
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 74
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 58
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000002485 combustion reaction Methods 0.000 claims abstract description 46
- 239000003345 natural gas Substances 0.000 claims abstract description 29
- 239000000112 cooling gas Substances 0.000 claims abstract description 10
- 239000001301 oxygen Substances 0.000 claims description 61
- 229910052760 oxygen Inorganic materials 0.000 claims description 61
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 60
- 230000005611 electricity Effects 0.000 claims description 15
- 229910021529 ammonia Inorganic materials 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 238000000354 decomposition reaction Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000002407 reforming Methods 0.000 claims description 5
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000006057 reforming reaction Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
- F02C7/141—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid
- F02C7/143—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid before or between the compressor stages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
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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 the technical field of associated power generation devices, in particular to a combined power generation system of an intercooler and a fuel cell gas turbine and a working method thereof, wherein the combined power generation system of the intercooler and the fuel cell gas turbine comprises: an air inlet of the low-pressure compressor is communicated with the outside air; the hot end of the intercooler is communicated with the gas outlet of the low-pressure compressor, the cold end of the intercooler is communicated with liquid ammonia, the heat of the low-pressure compressor heats and decomposes the liquid ammonia into hydrogen-rich gas, the hydrogen-rich gas outlet of the intercooler is communicated with the anode inlet of the fuel cell, and the cooling gas outlet of the intercooler is communicated with the cooling gas inlet of the high-pressure compressor; and a gas inlet of the combustion chamber is communicated with a high-pressure gas outlet of the high-pressure compressor, and a gas inlet of the combustion chamber is communicated with natural gas. The combustion efficiency of the gas turbine and the total efficiency of the power generation system are improved; the fuel cell and the gas turbine are used for generating power jointly, so that the working efficiency and the output power of the combined power generation system of the intercooler and the fuel cell gas turbine are improved.
Description
Technical Field
The invention relates to the technical field of power generation devices, in particular to a combined power generation system of an intercooler and a fuel cell gas turbine and a working method.
Background
The ammonia is a clean high-energy density hydrogen carrier, oxygen and water are not required to be introduced for decomposition, the process is simple, the device has a compact structure, the occupied area is small, the hydrogen production purity is high, the miniaturization is easy, and the requirement of a movable hydrogen source is met. Compared with other reforming fuels, ammonia has the advantages of high hydrogen content, no generation of pollution gas, no carbon element and the like. Compared with hydrogen, the ammonia has large volume energy density, is easy to liquefy, store and transport, is safer than other common fuels, and has better economy and little environmental hazard; in addition, the supply of ammonia in the market is sufficient, the annual output reaches more than 2 hundred million tons, the ammonia is a single chemical product with the largest usage in the world at present, wide manufacturing and distribution infrastructures are provided in the world, the uninterrupted supply of fuel can be guaranteed, and the environmental hazard of the ammonia is small.
The power generation industry is a main source of global greenhouse gas emission, so that the power generation industry is determined as a main target industry of carbon dioxide emission reduction, and the distributed power generation of the gas turbine is an important component of the power generation industry. At present, the key point of research on gas turbines is to improve cycle thermal efficiency and reduce carbon emissions, and gas turbines mostly use natural gas as a main fuel, and the incorporation of gases such as ammonia/hydrogen is a main solution for reducing carbon dioxide emissions.
Disclosure of Invention
Therefore, the invention provides a combined power generation system of an intercooler and a fuel cell gas turbine and an operating method thereof, which can reduce the carbon emission of the gas turbine and improve the overall power generation efficiency of the system.
In order to solve the above technical problems, the present invention provides a combined power generation system of an intercooler and a fuel cell gas turbine, comprising: the air inlet of the low-pressure air compressor is communicated with the outside air; the hot end of the intercooler is communicated with the gas outlet of the low-pressure compressor, the cold end of the intercooler is communicated with liquid ammonia, the heat of the low-pressure compressor heats and decomposes the liquid ammonia into hydrogen-rich gas, the hydrogen-rich gas outlet of the intercooler is communicated with the anode inlet of the fuel cell, and the cooling gas outlet of the intercooler is communicated with the cooling gas inlet of the high-pressure compressor; a gas inlet of the combustion chamber is communicated with a high-pressure gas outlet of the high-pressure compressor, a gas inlet of the combustion chamber is communicated with natural gas, a gas inlet of the combustion chamber is communicated with an anode outlet of the fuel cell, a gas outlet of the combustion chamber is communicated with a gas inlet of a high-pressure turbine, and a gas outlet of the high-pressure turbine is connected with a generator; and a cathode inlet of the fuel cell is communicated with an air outlet of the high-pressure turbine, a cathode outlet of the fuel cell is communicated with a low-pressure turbine, and the low-pressure turbine is connected with the generator.
Further, the hydrogen-rich gas is a mixed gas of ammonia vapor and nitrogen, and hydrogen.
Further, the gas produced at the outlet of the anode is unburnt hydrogen-rich gas.
Further, the oxygen content entering the combustion chamber from the high-pressure gas outlet of the high-pressure compressor is larger than the oxygen content required by mixing the unburned hydrogen-rich gas and the natural gas.
Further, after the hydrogen-rich gas and the natural gas are combusted, the generated gas is high-temperature and high-pressure oxygen-rich gas.
Further, the oxygen-enriched gas pushes the high-pressure turbine to do work and generate power, the oxygen-enriched gas is communicated with the cathode inlet and provides unburned oxygen to the fuel cell for power generation, and the oxygen-enriched gas is communicated with the cathode outlet and pushes the low-pressure turbine to do work and generate power.
Further, the low-pressure compressor, the high-pressure turbine, the low-pressure turbine and the generator are coaxially arranged.
Further, a reforming chamber for ammonia decomposition and reforming reaction is arranged in the intercooler.
Further, the fuel cell is a solid oxide fuel cell.
The invention also provides a working method of the combined power generation system of the intercooler and the fuel cell gas turbine, which comprises the following steps: the method comprises the following steps that excess air from the atmosphere is primarily compressed by a low-pressure compressor and then introduced into a hot end of an intercooler, liquid ammonia is introduced into a cold end of the intercooler, the primarily compressed air is cooled through heat exchange, the cooled air is further compressed by a high-pressure compressor and finally introduced into a combustion chamber; liquid ammonia is heated and decomposed in the intercooler to form hydrogen-rich gas, at the moment, the oxygen content in the air in the combustion chamber is more than the amount of oxygen required by the mixture of the hydrogen-rich gas and the natural gas, the hydrogen-rich gas and the natural gas are combusted in excess air to generate high-temperature and high-pressure oxygen-rich gas, the oxygen-rich gas pushes the high-pressure turbine to do work and generate electricity, the oxygen-rich gas after doing work and generating electricity enters the cathode of the fuel cell, and the oxygen-rich gas at the outlet of the cathode of the fuel cell pushes the low-pressure turbine to do work and generate electricity; the hydrogen-rich gas is introduced into the anode of the fuel cell, and generates electrochemical reaction with the oxygen-rich gas at the cathode to generate electricity, and the unburnt hydrogen-rich gas at the outlet of the anode of the fuel cell is doped into natural gas.
The technical scheme of the invention has the following advantages:
1. the invention provides a combined power generation system of an intercooler and a fuel cell gas turbine, which comprises: the air inlet of the low-pressure air compressor is communicated with the outside air; the hot end of the intercooler is communicated with the gas outlet of the low-pressure compressor, the cold end of the intercooler is communicated with liquid ammonia, the heat of the low-pressure compressor heats and decomposes the liquid ammonia into hydrogen-rich gas, the hydrogen-rich gas outlet of the intercooler is communicated with the anode inlet of the fuel cell, and the cooling gas outlet of the intercooler is communicated with the cooling gas inlet of the high-pressure compressor; a gas inlet of the combustion chamber is communicated with a high-pressure gas outlet of the high-pressure compressor, a gas inlet of the combustion chamber is communicated with natural gas, a gas inlet of the combustion chamber is communicated with an anode outlet of the fuel cell, a gas outlet of the combustion chamber is communicated with a gas inlet of a high-pressure turbine, and a gas outlet of the high-pressure turbine is connected with a generator; and a cathode inlet of the fuel cell is communicated with an air outlet of the high-pressure turbine, a cathode outlet of the fuel cell is communicated with a low-pressure turbine, and the low-pressure turbine is connected with the generator.
The combined power generation system of the intercooler and the fuel cell gas turbine utilizes the heat of the intercooler to heat and decompose liquid ammonia so as to prepare hydrogen-rich gas, the extra heat required by the evaporation and decomposition of the liquid ammonia is saved, the generated hydrogen-rich gas can be simultaneously used as fuel of the fuel cell and the gas turbine, namely, the intercooler is communicated with the anode inlet of the fuel cell; meanwhile, hydrogen-rich gas also enters the combustion chamber, and is mixed with natural gas in the combustion chamber and then is combusted, so that the emission of CO2 of the gas turbine is reduced; when liquid ammonia is heated and decomposed into hydrogen-rich gas in the intercooler, the oxygen content in the air in the combustion chamber is more than the oxygen amount required by the mixture of the hydrogen-rich gas and the natural gas, the hydrogen-rich gas and the natural gas are combusted in excess air to generate high-temperature and high-pressure oxygen-rich gas, the oxygen-rich gas pushes the high-pressure turbine to do work and generate power, the oxygen-rich gas after doing work and generating power enters the cathode of the fuel cell, and the oxygen-rich gas at the outlet of the cathode of the fuel cell pushes the low-pressure turbine to do work and generate power, so that the combustion efficiency of the gas turbine and the total efficiency of a power generation system are improved; the fuel cell and the gas turbine are used for generating power jointly, so that the working efficiency and the output power of the combined power generation system of the intercooler and the fuel cell gas turbine are improved.
2. In the combined power generation system of the intercooler and the fuel cell gas turbine, gas generated at the outlet of the anode is unburnt hydrogen-rich gas. And the hydrogen-rich gas from the hydrogen-rich gas outlet of the intercooler enters the anode of the fuel cell, and the hydrogen-rich gas and the oxygen-rich gas react and combust to enable the fuel cell to generate electricity. Wherein the unburned hydrogen-rich gas enters the combustion chamber through the anode outlet to perform further reaction combustion, and the arrangement avoids the waste of the unburned hydrogen-rich gas.
3. The invention provides a combined power generation system of an intercooler and a fuel cell gas turbine, wherein a low-pressure compressor, a high-pressure turbine, a low-pressure turbine and a power generator are coaxially arranged. The low-pressure compressor, the high-pressure turbine, the low-pressure turbine and the generator are coaxially arranged, so that the working performance of the low-pressure compressor, the high-pressure turbine, the low-pressure turbine and the generator is ensured, and the optimal working efficiency is achieved.
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the disclosure, nor is it intended to be used to limit the scope of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of an intercooler and fuel cell gas turbine combined power generation system provided in accordance with the present invention.
Description of reference numerals:
1. a low pressure compressor; 2. an intercooler; 3. a high pressure compressor; 4. a combustion chamber; 5. a high pressure turbine; 6. a fuel cell; 7. a low pressure turbine; 8. an electric generator.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can appreciate, the described embodiments can be modified in various different ways, without departing from the spirit or scope of the present disclosure. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present disclosure, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "straight", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present disclosure. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.
Throughout the description of the present disclosure, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection, either mechanically, electrically, or otherwise in communication with one another; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the disclosure. To simplify the disclosure of the present disclosure, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present disclosure. Moreover, the present disclosure may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The preferred embodiments of the present disclosure will be described below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustrating and explaining the present disclosure and are not intended to limit the present disclosure.
Referring to fig. 1, the present invention provides an intercooler and fuel cell gas turbine combined power generation system, including: the low-pressure compressor 1 is characterized in that an air inlet of the low-pressure compressor 1 is communicated with the outside air; the hot end of the intercooler 2 is communicated with the gas outlet of the low-pressure compressor 1, the cold end of the intercooler 2 is communicated with liquid ammonia, the heat of the low-pressure compressor 1 heats and decomposes the liquid ammonia into hydrogen-rich gas, the hydrogen-rich gas outlet of the intercooler 2 is communicated with the anode inlet of the fuel cell 6, and the cooling gas outlet of the intercooler 2 is communicated with the cooling gas inlet of the high-pressure compressor 3; a gas inlet of the combustion chamber 4 is communicated with a high-pressure gas outlet of the high-pressure compressor 3, a gas inlet of the combustion chamber 4 is communicated with natural gas, a gas inlet of the combustion chamber 4 is communicated with an anode outlet of the fuel cell 6, a gas outlet of the combustion chamber 4 is communicated with a gas inlet of the high-pressure turbine 5, and a gas outlet of the high-pressure turbine 5 is connected with the generator 8; the cathode inlet of the fuel cell 6 is communicated with the air outlet of the high-pressure turbine 5, the cathode outlet of the fuel cell 6 is communicated with the low-pressure turbine 7, and the low-pressure turbine 7 is connected with the generator 8.
The combined power generation system of the intercooler and the fuel cell gas turbine utilizes the heat of the intercooler 2 to heat and decompose liquid ammonia, thereby preparing hydrogen-rich gas, saving extra heat required by evaporation and decomposition of the liquid ammonia, and the generated hydrogen-rich gas can be simultaneously used as fuel of the fuel cell 6 and the gas turbine, namely the intercooler 2 is communicated with the anode inlet of the fuel cell 6; meanwhile, the hydrogen-rich gas also enters the combustion chamber 4, and is mixed with the natural gas in the combustion chamber 4 for combustion, so that the emission of CO2 of the gas turbine is reduced; when liquid ammonia is heated and decomposed into hydrogen-rich gas in the intercooler 2, the oxygen content in the air in the combustion chamber 4 is more than the amount of oxygen required by the mixture of the hydrogen-rich gas and the natural gas, the hydrogen-rich gas and the natural gas are combusted in excess air to generate high-temperature and high-pressure oxygen-rich gas, the oxygen-rich gas pushes the high-pressure turbine 5 to do work and generate electricity, the oxygen-rich gas after doing work and generating electricity enters the cathode of the fuel cell 6, the oxygen-rich gas at the outlet of the cathode of the fuel cell 6 pushes the low-pressure turbine 7 to do work and generate electricity, and the combustion efficiency of the gas turbine and the total efficiency of the power generation system are improved; the fuel cell 6 and the gas turbine are used for generating power jointly, so that the working efficiency and the output power of the combined power generation system of the intercooler and the fuel cell gas turbine are improved.
In some alternative embodiments, the hydrogen-rich gas is a mixture of ammonia vapor and nitrogen, and hydrogen. Namely, the intercooler 2 is used for evaporating and decomposing liquid ammonia, the heat of the low-pressure compressor 1 is used for heating and decomposing the liquid ammonia to prepare hydrogen-rich gas, and specifically, the generated decomposition reaction is as follows: 2NH3 → N2+3H2.
In some alternative embodiments, the gas produced at the anode outlet is unburned hydrogen-rich gas. The hydrogen-rich gas from the hydrogen-rich gas outlet of the intercooler 2 enters the anode of the fuel cell 6, and the hydrogen-rich gas and the oxygen-rich gas react and combust to enable the fuel cell 6 to generate electricity. Wherein the unburned hydrogen-rich gas enters the combustion chamber 4 through the anode outlet for further reaction combustion, which avoids waste of the unburned hydrogen-rich gas.
In some alternative embodiments, the oxygen content entering the combustion chamber 4 from the high-pressure gas outlet of the high-pressure compressor 3 is greater than the oxygen content required for mixing the unburnt hydrogen-rich gas with natural gas. Specifically, the excess air is compressed by a low-pressure compressor 1, enters an intercooler 2 for cooling, then enters a combustion chamber 4 by a high-pressure compressor 3, the oxygen content in the air is more than the oxygen required by the mixture of the hydrogen-rich gas and the natural gas, and the hydrogen-rich gas and the natural gas are combusted in the excess air to generate the high-temperature and high-pressure oxygen-rich gas. This oxygen-rich gas reacts with the hydrogen-rich gas at the anode of the fuel cell 6 to combust, so that the fuel cell 6 generates electricity.
In some optional embodiments, after the air is compressed by the low-pressure compressor 1 to generate high-pressure gas, and enters the intercooler 2 for cooling, the cooled high-pressure gas enters the high-pressure compressor 3 for compression to generate high-pressure gas, and enters the combustion chamber 4, and the high-pressure gas and the hydrogen-rich gas in the combustion chamber 4 are combusted with the natural gas to generate oxygen-rich gas with high temperature and high pressure.
In some optional embodiments, the oxygen-enriched gas pushes the high-pressure turbine 5 to do work and generate power, the oxygen-enriched gas is communicated with the cathode inlet, unburnt oxygen is provided to the fuel cell 6 to generate power, the oxygen-enriched gas is communicated with the cathode outlet and pushes the low-pressure turbine 7 to do work and generate power, and the combustion efficiency of the gas turbine and the overall efficiency of a power generation system are improved; the fuel cell 6 and the gas turbine are used for generating power jointly, so that the working efficiency and the output power of the combined power generation system of the intercooler and the fuel cell gas turbine are improved.
In some alternative embodiments, the low-pressure compressor 1, the high-pressure compressor 3, the high-pressure turbine 5, the low-pressure turbine 7, and the generator 8 are coaxially arranged. The working performance of the low-pressure compressor 1, the high-pressure compressor 3, the high-pressure turbine 5, the low-pressure turbine 7 and the generator 8 is ensured by the coaxially arranged low-pressure compressor 1, the high-pressure compressor 3, the high-pressure turbine 5, the low-pressure turbine 7 and the generator 8, and the optimal working efficiency is achieved.
In some alternative embodiments, the intercooler 2 is provided with a reforming chamber for ammonia decomposition reforming reaction. Through the setting of reforming chamber for liquid ammonia decomposes into hydrogen-rich gas after entering intercooler 2, is about to decompose liquid ammonia into the mist of ammonia steam and nitrogen gas and hydrogen.
In the present embodiment, the fuel cell 6 is a solid oxide fuel cell 6.
The invention also provides a working method of the combined power generation system of the intercooler and the fuel cell gas turbine, which comprises the following steps: excess air from the atmosphere is primarily compressed by a low-pressure compressor and then introduced into the hot end of an intercooler 2, liquid ammonia is introduced into the cold end of the intercooler 2, the primarily compressed air is cooled through heat exchange, the cooled air is further compressed by a high-pressure compressor 3, and finally, the cooled air is introduced into a combustion chamber 4; liquid ammonia is heated and decomposed into hydrogen-rich gas in the intercooler 2, at the moment, the oxygen content in the air in the combustion chamber 4 is more than the amount of oxygen required by the mixture of the hydrogen-rich gas and the natural gas, the hydrogen-rich gas and the natural gas are combusted in excess air to generate high-temperature and high-pressure oxygen-rich gas, the oxygen-rich gas pushes the high-pressure turbine 5 to do work and generate electricity, the oxygen-rich gas after doing work and generating electricity enters the cathode of the fuel cell 6, and the oxygen-rich gas at the outlet of the cathode of the fuel cell 6 pushes the low-pressure turbine 7 to do work and generate electricity; the hydrogen-rich gas is introduced into the anode of the fuel cell 6, and generates electrochemical reaction with the oxygen-rich gas at the cathode to generate electricity, and the unburnt hydrogen-rich gas at the outlet of the anode of the fuel cell 6 is mixed with natural gas.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. An intercooler and fuel cell gas turbine combined power generation system, comprising:
the air inlet of the low-pressure compressor (1) is communicated with the outside air;
the hot end of the intercooler (2) is communicated with the gas outlet of the low-pressure compressor (1), the cold end of the intercooler (2) is communicated with liquid ammonia, the heat of the low-pressure compressor (1) heats and decomposes the liquid ammonia into hydrogen-rich gas, the hydrogen-rich gas outlet of the intercooler (2) is communicated with the anode inlet of the fuel cell (6), and the cooling gas outlet of the intercooler (2) is communicated with the cooling gas inlet of the high-pressure compressor (3);
the gas inlet of the combustion chamber (4) is communicated with the high-pressure gas outlet of the high-pressure gas compressor (3), the gas inlet of the combustion chamber (4) is communicated with natural gas, the gas inlet of the combustion chamber (4) is communicated with the anode outlet of the fuel cell (6), the gas outlet of the combustion chamber (4) is communicated with the gas inlet of the high-pressure turbine (5), and the gas outlet of the high-pressure turbine (5) is connected with the generator (8);
the cathode inlet of the fuel cell (6) is communicated with the air outlet of the high-pressure turbine (5), the cathode outlet of the fuel cell (6) is communicated with the low-pressure turbine (7), and the low-pressure turbine (7) is connected with the generator (8).
2. The intercooler-fuel cell gas turbine combined power generation system according to claim 1, wherein the hydrogen rich gas is a mixed gas of ammonia vapor and nitrogen, and hydrogen.
3. The intercooler-fuel cell gas turbine combined power generation system according to claim 1 or 2, wherein the gas produced at the outlet of the anode is unburnt hydrogen-rich gas.
4. An intercooler-fuel cell gas turbine combined power generation system according to claim 3, wherein the oxygen content entering the combustion chamber (4) from the high-pressure gas outlet of the high-pressure compressor (3) is greater than the oxygen content required for mixing the unburnt hydrogen-rich gas with natural gas.
5. The intercooler-fuel cell gas turbine combined power generation system according to claim 4, wherein the gas generated by combusting the hydrogen rich gas and the natural gas is a high-temperature high-pressure oxygen-rich gas.
6. The intercooler-fuel cell gas turbine combined power generation system of claim 5, wherein the oxygen-enriched gas pushes the high pressure turbine (5) to do work to generate power, the oxygen-enriched gas is communicated with the cathode inlet to provide unburnt oxygen to the fuel cell (6) to generate power, and the oxygen-enriched gas is communicated with the cathode outlet to push the low pressure turbine (7) to do work to generate power.
7. Intercooler-fuel cell gas turbine combined power generation system according to any of claims 4-6, characterized in that the low-pressure compressor (1), the high-pressure compressor (3), the high-pressure turbine (5), the low-pressure turbine (7) and the generator (8) are coaxially arranged.
8. An intercooler-fuel cell gas turbine combined power generation system according to claim 7, wherein the intercooler (2) is provided with a reforming chamber for ammonia decomposition reforming reaction therein.
9. An intercooler-fuel cell gas turbine combined power generation system according to claim 8, wherein the fuel cell (6) is a solid oxide fuel cell (6).
10. A method of operating an intercooler and fuel cell gas turbine combined power generation system according to any one of claims 1-9, comprising:
excessive air from the atmosphere is primarily compressed by a low-pressure compressor and then introduced into the hot end of the intercooler (2), liquid ammonia is introduced into the cold end of the intercooler (2), the primarily compressed air is cooled through heat exchange, the cooled air is further compressed by a high-pressure compressor (3), and finally the cooled air is introduced into a combustion chamber (4);
liquid ammonia is heated and decomposed into hydrogen-rich gas in the intercooler (2), at the moment, the oxygen content in the air in the combustion chamber (4) is more than the oxygen amount required by the mixture of the hydrogen-rich gas and the natural gas, the hydrogen-rich gas and the natural gas are combusted in excess air to generate high-temperature and high-pressure oxygen-rich gas, the oxygen-rich gas pushes the high-pressure turbine (5) to do work and generate power, the oxygen-rich gas after doing work and generating power enters the cathode of the fuel cell (6), and the oxygen-rich gas at the outlet of the cathode of the fuel cell (6) pushes the low-pressure turbine (7) to do work and generate power;
the hydrogen-rich gas is introduced into the anode of the fuel cell (6) and reacts with the oxygen-rich gas at the cathode to generate electricity, and the hydrogen-rich gas which is not burnt out at the anode outlet of the fuel cell (6) is doped into natural gas.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007143937A1 (en) * | 2006-05-12 | 2007-12-21 | Yun Tian | Hybrid power system for vehicle-use fuel cell, automobile including the system, the use of the system and the use of fuel cell stack |
| CN102088099A (en) * | 2010-12-16 | 2011-06-08 | 西安交通大学 | Combined cold-heat-power supplying circulation system driven by solid oxide fuel cell |
| CN102449835A (en) * | 2009-03-30 | 2012-05-09 | 莲花汽车有限公司 | A reheated gas turbine system having a fuel cell |
| DE102015213930A1 (en) * | 2015-07-23 | 2017-01-26 | Siemens Aktiengesellschaft | Gas turbine power plant |
| CN108884761A (en) * | 2016-03-14 | 2018-11-23 | 艾奎诺能源公司 | ammonia cracking |
| CN110300840A (en) * | 2017-03-27 | 2019-10-01 | 株式会社Ihi | Burner and gas turbine engine system |
-
2022
- 2022-08-16 CN CN202210979518.9A patent/CN115324736A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007143937A1 (en) * | 2006-05-12 | 2007-12-21 | Yun Tian | Hybrid power system for vehicle-use fuel cell, automobile including the system, the use of the system and the use of fuel cell stack |
| CN102449835A (en) * | 2009-03-30 | 2012-05-09 | 莲花汽车有限公司 | A reheated gas turbine system having a fuel cell |
| CN102088099A (en) * | 2010-12-16 | 2011-06-08 | 西安交通大学 | Combined cold-heat-power supplying circulation system driven by solid oxide fuel cell |
| DE102015213930A1 (en) * | 2015-07-23 | 2017-01-26 | Siemens Aktiengesellschaft | Gas turbine power plant |
| CN108884761A (en) * | 2016-03-14 | 2018-11-23 | 艾奎诺能源公司 | ammonia cracking |
| CN110300840A (en) * | 2017-03-27 | 2019-10-01 | 株式会社Ihi | Burner and gas turbine engine system |
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