CN115217565A - Combined power generation device system and method adopting ammonia fuel - Google Patents
Combined power generation device system and method adopting ammonia fuel Download PDFInfo
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- CN115217565A CN115217565A CN202210802307.8A CN202210802307A CN115217565A CN 115217565 A CN115217565 A CN 115217565A CN 202210802307 A CN202210802307 A CN 202210802307A CN 115217565 A CN115217565 A CN 115217565A
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 353
- 238000010248 power generation Methods 0.000 title claims abstract description 119
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 105
- 239000000446 fuel Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000003860 storage Methods 0.000 claims abstract description 46
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003546 flue gas Substances 0.000 claims abstract description 37
- 239000007789 gas Substances 0.000 claims description 36
- 238000002485 combustion reaction Methods 0.000 claims description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 241001672018 Cercomela melanura Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/106—Ammonia
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/006—Auxiliaries or details not otherwise provided for
-
- 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
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a combined power generation device system and a method adopting ammonia fuel, wherein the combined power generation device system comprises a liquid ammonia storage device, a first heat exchange device, an ammonia turbine power generation device, an ammonia storage device and an ammonia power generation device which are sequentially connected; the ammonia gas power generation device is connected with the first heat exchange device through a flue gas conveying pipeline; the combined power generation method utilizes the first heat exchange device to recover cold energy of liquid ammonia and heat of flue gas, clean electric power is generated through the ammonia turbine power generation device and the ammonia power generation device, no carbon is discharged in the whole power generation process, and the combined power generation method is environment-friendly and suitable for large-scale popularization and application.
Description
Technical Field
The invention relates to the technical field of green low-carbon power generation, in particular to a combined power generation device system and a method adopting ammonia fuel.
Background
Ammonia is one of the most basic chemical raw materials in the world, is widely applied to the refrigeration industry, and has mature industrial preparation technology and a transportation system. The ammonia is also a zero-carbon clean energy, is considered as an excellent carrier of hydrogen energy, has stable and safe properties, low price and easy storage and transportation, and has wide prospect in an energy system taking the ammonia as the center.
CN114655411A discloses a ship ammonia fuel hybrid power system, a control method, a device and a storage medium thereof. The control device is used for respectively controlling the working states of the electric drive subsystem and the ammonia fuel starting subsystem according to the working modes of the ship and respectively controlling the first clutch and the second clutch to be closed or opened, and the control device can enable the electric drive subsystem and the ammonia fuel starting subsystem to be in hybrid drive with the ship drive device under different ship working mode requirements so as to reduce the energy consumption of the ship power system. The control device can also keep the working state of the energy cleaning subsystem synchronous with the working state of the ammonia fuel starting subsystem, so that the energy cleaning subsystem can timely treat the waste gas discharged by the ammonia fuel starting subsystem, and the waste gas discharged to the atmospheric environment from the ammonia fuel starting subsystem is reduced.
CN113048469A discloses an ammonia boiler for magnetic ring enhanced rotating arc plasma real-time cracking of ammonia fuel based on molten salt energy storage, which comprises an ammonia decomposition box, wherein the ammonia decomposition box comprises a plasma ammonia cracker, a temperature sensor, a gas pressure sensor and a hydrogen component sensor; before the ammonia fuel source is mixed with an air source for combustion, the ammonia fuel source passes through an ammonia decomposition box, and is subjected to cracking in real time by a magnetic ring enhanced rotary arc plasma ammonia cracker to prepare ammonia/hydrogen mixed gas; the plasma igniter and the plasma combustion-supporting device are arranged in a combustion chamber of the ammonia boiler. The proportion of ammonia gas/hydrogen can be accurately adjusted by adjusting the magnetic ring to enhance the discharge power of the rotary arc plasma ammonia cracker, so that the ammonia/hydrogen mixed fuel can be stably combusted in a boiler combustion chamber, and an online ammonia boiler tail gas treatment system performs purification treatment on tail gas by using the existing ammonia fuel of a combustion system so as to reach the emission standard.
CN110994611A discloses auxiliary service system and method for an ammonia internal combustion generator of a thermal power plant and a carbon emission reduction method, and the method comprises the following steps: the auxiliary service control platform (1) controls the power and the generated energy of the ammonia fuel internal combustion generator (4) to meet the requirement of a power grid on auxiliary service of a thermal power plant through a control signal, the ammonia raw material storage and supply system (5) supplies the generated ammonia as a raw material to the ammonia fuel internal combustion generator (4) for power generation, and the generated electric energy is transmitted to the power grid through the power transmission and transformation module (2); flue gas generated by power generation of the ammonia fuel internal combustion generator (4) enters a pulverized coal boiler (303) of the thermal power plant (3) through a flue gas discharge connecting pipeline and is subjected to harmless treatment by using flue gas treatment equipment. The system can effectively improve the auxiliary service regulation capacity of peak regulation, frequency modulation and black start of the thermal power plant, increase the economic benefit of the thermal power plant and simultaneously realize carbon emission reduction of the thermal power plant.
However, the systems do not recover the cold energy of the liquid ammonia, and the energy is wasted to a certain degree.
Therefore, the development of the combined power generation device system and the method adopting the ammonia fuel, which can recover the cold energy of the liquid ammonia and recover the heat energy of the discharged tail gas in the system and obtain clean electric power to the maximum extent, has important significance.
Disclosure of Invention
In view of the problems in the prior art, the invention provides a combined power generation device system and a method adopting ammonia fuel, wherein a first heat exchange device is used for recovering cold energy of liquid ammonia and heat of flue gas, clean power is generated by an ammonia gas turbine power generation device and an ammonia gas power generation device, no carbon emission is generated in the whole power generation process, and the combined power generation device system and the method are environment-friendly.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a combined power generation device system using ammonia fuel, which comprises a liquid ammonia storage device, a first heat exchange device, an ammonia turbine power generation device, an ammonia storage device and an ammonia power generation device which are connected in sequence; the ammonia power generation device is connected with the first heat exchange device through a flue gas conveying pipeline.
The combined power generation device system adopting the ammonia fuel recycles the heat of the flue gas discharged by the ammonia power generation device through the first heat exchange device, and the heat heats liquid ammonia into a gaseous state; the gaseous ammonia enters an ammonia turbine power generation device to generate power; the generated ammonia gas is stored in an ammonia gas storage device, the ammonia fuel capacity and the pressure are kept stable, and then the ammonia gas is used as the fuel of the ammonia gas power generation device for generating power again. The comprehensive utilization efficiency of ammonia fuel in the combined power generation device system is high, the cold energy of liquid ammonia and the heat of flue gas are recycled, and clean electric power is generated by the ammonia turbine power generation device and the ammonia power generation device; and the combined power generation device system replaces the traditional carbon-based fuel with the carbon-free fuel liquid ammonia, so that no carbon is discharged in the whole power generation process, and the combined power generation device system is environment-friendly.
Preferably, a conveying device is arranged between the liquid ammonia storage device and the first heat exchange device.
Preferably, the ammonia gas power generation device includes any one of an ammonia gas turbine power generation device, an ammonia internal combustion power generation device, or an ammonia fuel cell.
Preferably, when the ammonia gas power generation device is an ammonia gas turbine power generation device, a first gas pipeline is arranged on one side of the ammonia gas turbine power generation device.
Preferably, when the compression mode of the compressor in the ammonia gas turbine power generation device is multi-stage intercooling compression, the ammonia gas turbine power generation device is circularly connected with the second heat exchange device through the second gas pipeline.
Preferably, the second heat exchange device is respectively connected with the liquid ammonia storage device and the ammonia storage device.
Preferably, a flue gas discharge pipeline is arranged on one side of the first heat exchange device.
The combined power generation device system adopts the carbon-free fuel liquid ammonia, so that the discharged flue gas does not generate atmospheric pollutants such as carbon dioxide and the like, and the combined power generation device system is environment-friendly.
In a second aspect, the present invention also provides a cogeneration method using ammonia fuel, said cogeneration method being performed using the cogeneration system using ammonia fuel of the first aspect.
Preferably, the combined power generation method comprises the following steps:
(1) Ammonia water in the liquid ammonia storage device enters a first heat exchange device to exchange heat with flue gas discharged from an ammonia power generation device to generate first ammonia gas;
(2) The first ammonia gas drives an ammonia gas turbine power generation device to generate power, the ammonia gas turbine power generation device discharges a second ammonia gas, and the second ammonia gas enters an ammonia gas storage device to be stored;
(3) And the second ammonia gas in the ammonia gas storage device is mixed with the gas conveyed in the first gas pipeline, and the mixed gas enters the ammonia gas power generation device together to drive the ammonia gas power generation device to generate power and generate flue gas.
The combined power generation method adopting the ammonia fuel utilizes the liquid ammonia to exchange heat with the flue gas discharged from the ammonia power generation device, thereby not only recovering the cold energy of the liquid ammonia, but also recovering the heat of the flue gas; clean electric power is generated through the ammonia gas turbine power generation device and the ammonia gas power generation device, the comprehensive utilization efficiency of ammonia fuel is high, no carbon is discharged, and the ammonia fuel has good practical application value.
Preferably, the temperature of the flue gas in step (1) is 100 ℃ to 600 ℃, for example, 100 ℃, 150 ℃, 200 ℃, 300 ℃, 400 ℃ or 600 ℃, but not limited to the recited values, and other values not recited in the range of the values are also applicable.
Preferably, the pressure of the first ammonia gas is 0.5MPa to 12MPa, for example, 0.5MPa, 1MPa, 2MPa, 5MPa, 8MPa or 12MPa, but not limited to the recited values, and other values not recited in the numerical range are also applicable.
Preferably, the pressure of the gas transported in the first gas line in step (3) is 10kPa to 3MPa, and may be, for example, 10kPa, 50kPa, 80kPa, 1MPa, 2MPa or 3MPa, but is not limited to the recited values, and other values not recited in the range of the recited values are also applicable.
Preferably, the oxygen content of the gas is 21% to 99.9% by volume, and may be, for example, 21%, 30%, 40%, 50%, 80%, 90%, or 99.9%, but is not limited to the recited values, and other values not recited within the range of values are also applicable.
As a preferable technical scheme of the invention, the combined power generation method comprises the following steps:
(1) Ammonia water in the liquid ammonia storage device enters a first heat exchange device to exchange heat with flue gas discharged from an ammonia power generation device at the temperature of 100-600 ℃ to generate first ammonia gas with the pressure of 0.5-12 MPa;
(2) The first ammonia gas drives an ammonia gas turbine power generation device to generate power, the ammonia gas turbine power generation device discharges second ammonia gas, and the second ammonia gas enters an ammonia gas storage device to be stored;
(3) And the second ammonia gas in the ammonia gas storage device is mixed with the gas which is conveyed in the first gas pipeline and has the pressure of 10 kPa-3 MPa and the volume percentage content of oxygen of 21-99.9 percent, and the mixture enters an ammonia gas power generation device together to drive the ammonia gas power generation device to generate power and generate flue gas.
Compared with the prior art, the invention at least has the following beneficial effects:
(1) The combined power generation device system adopting the ammonia fuel provided by the invention has the advantages that the structure is simple, the operation is reliable, the cold energy of liquid ammonia and the heat of flue gas are recovered, clean electric power is generated, and zero carbon emission of the combined power generation device system is realized;
(2) The combined power generation method adopting the ammonia fuel provided by the invention has high comprehensive utilization efficiency of the ammonia fuel, and has a large-scale popularization and application prospect.
Drawings
FIG. 1 is a schematic configuration diagram of an integrated power plant system using ammonia fuel according to example 1.
FIG. 2 is a schematic configuration diagram of an integrated power plant system using ammonia fuel according to example 3.
In the figure: 1-a liquid ammonia storage device; 2-a first heat exchange device; 3-an ammonia turbine power plant; 4-ammonia storage means; 5-an ammonia generating unit; 6-a flue gas conveying pipeline; 7-a first gas conduit; 8-a flue gas discharge pipeline; 9-a second heat exchange device; 10-second gas line.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
It is to be understood that in the description of the present invention, the terms "first", "second", and the like 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, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It should be understood by those skilled in the art that the present invention necessarily includes necessary piping, conventional valves and general pump equipment for achieving the complete process, but the above contents do not belong to the main inventive points of the present invention, and those skilled in the art can select the layout of the additional equipment based on the process flow and the equipment structure, and the present invention is not particularly limited to this.
Example 1
The embodiment provides an integrated power plant system using ammonia fuel, and the structure schematic diagram is shown in FIG. 1. The combined power generation device system comprises a liquid ammonia storage device 1, a first heat exchange device 2, an ammonia turbine power generation device 3, an ammonia storage device 4 and an ammonia power generation device 5 which are connected in sequence; the ammonia power generation device 5 is connected with the first heat exchange device 2 through a flue gas conveying pipeline 6.
And a conveying device is arranged between the liquid ammonia storage device 1 and the first heat exchange device 2.
The ammonia gas power generation device 5 is an ammonia gas turbine power generation device; a first gas pipeline 7 is arranged on one side of the ammonia gas turbine power generation device; the compression mode of the compressor in the ammonia gas turbine power generation device is non-multi-stage intercooling compression.
And a flue gas discharge pipeline 8 is arranged on one side of the first heat exchange device 2.
The present embodiment also provides a combined power generation method using ammonia fuel, which is performed by using the above-mentioned combined power generation system using ammonia fuel, and the combined power generation method includes the following steps:
(1) Ammonia water in the liquid ammonia storage device 1 enters a first heat exchange device 2 to exchange heat with flue gas discharged from an ammonia gas turbine power generation device and at the temperature of 600 ℃ to generate first ammonia gas with the pressure of 10 MPa;
(2) The first ammonia gas drives an ammonia gas turbine power generation device 3 to generate power, the ammonia gas turbine power generation device 3 discharges a second ammonia gas, and the second ammonia gas enters an ammonia gas storage device 4 to be stored;
(3) And the second ammonia gas in the ammonia gas storage device 4 is mixed with the gas which is conveyed in the first gas pipeline 7 and has the pressure of 0.5MPa and the volume percentage content of oxygen of 21 percent, and the mixture enters the ammonia gas turbine power generation device together to drive the ammonia gas turbine power generation device to generate power and generate flue gas.
Example 2
This example provides a cogeneration system using ammonia fuel, which is the same as example 1.
The present embodiment also provides a cogeneration method using an ammonia fuel, the cogeneration method being performed using the cogeneration system using an ammonia fuel as described above, the cogeneration method including the steps of:
(1) Ammonia water in the liquid ammonia storage device 1 enters a first heat exchange device 2 to exchange heat with flue gas discharged from an ammonia gas turbine power generation device and with the temperature of 200 ℃ to generate first ammonia gas with the pressure of 0.5 MPa;
(2) The first ammonia gas drives the ammonia gas turbine power generation device 3 to generate power, the ammonia gas turbine power generation device 3 discharges second ammonia gas, and the second ammonia gas enters the ammonia gas storage device 4 to be stored;
(3) And the second ammonia gas in the ammonia gas storage device 4 is mixed with the gas which is conveyed in the first gas pipeline 7 and has the pressure of 3MPa and the volume percentage content of oxygen of 99.9 percent, and the mixture enters the ammonia gas turbine power generation device together to drive the ammonia gas turbine power generation device to generate power and generate flue gas.
Example 3
The embodiment provides a combined power generation device system using ammonia fuel, except that the compression mode of a compressor in the ammonia gas turbine power generation device is multi-stage intercooling compression, and the ammonia gas turbine power generation device is circularly connected with a second heat exchange device 9 through a second gas pipeline 10; the second heat exchange device 9 is the same as that of example 1 except that it is connected to the liquid ammonia storage device 1 and the ammonia storage device 4, respectively, and its schematic structural diagram is shown in fig. 2.
The present embodiment also provides a combined power generation method using ammonia fuel, which is performed by using the above-mentioned combined power generation system using ammonia fuel, and the combined power generation method includes the following steps:
(1) Ammonia water in the liquid ammonia storage device 1 is divided into two paths, wherein one path of ammonia water enters the first heat exchange device 2 and exchanges heat with flue gas discharged from the ammonia gas turbine power generation device and with the temperature of 600 ℃ to generate first ammonia gas with the pressure of 10 MPa; the other path of the ammonia gas enters a second heat exchange device 9 to exchange heat with intermediate gas generated in the ammonia gas turbine power generation device to generate third ammonia gas; the third ammonia enters an ammonia storage device 4 for storage;
(2) The first ammonia gas drives the ammonia gas turbine power generation device 3 to generate power, the ammonia gas turbine power generation device 3 discharges second ammonia gas, and the second ammonia gas enters the ammonia gas storage device 4 to be stored;
(3) And the second ammonia gas in the ammonia gas storage device 4 is mixed with the gas which is conveyed in the first gas pipeline 7 and has the pressure of 0.5MPa and the volume percentage content of oxygen of 21 percent, and the mixture enters the ammonia gas turbine power generation device together to drive the ammonia gas turbine power generation device to generate power and generate flue gas.
In conclusion, the combined power generation device system adopting the ammonia fuel provided by the invention has the advantages that the structure is simple, the operation is reliable, the cold energy of liquid ammonia is recovered, the heat of flue gas is recovered, the comprehensive utilization efficiency of the ammonia fuel is high, and no carbon is discharged; the combined power generation method adopting the ammonia fuel has high comprehensive utilization efficiency of the ammonia fuel and has large-scale popularization and application prospects.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications, equivalent substitutions of selected elements of the present invention, additions of auxiliary elements, selection of specific forms, etc., are intended to fall within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
Claims (10)
1. A combined power generation device system adopting ammonia fuel is characterized by comprising a liquid ammonia storage device, a first heat exchange device, an ammonia turbine power generation device, an ammonia storage device and an ammonia power generation device which are sequentially connected; the ammonia power generation device is connected with the first heat exchange device through a flue gas conveying pipeline.
2. The combined power plant system according to claim 1, wherein a transfer means is provided between the liquid ammonia storage means and the first heat exchange means.
3. The cogeneration system of claim 1 or 2, wherein said ammonia gas power plant comprises any one of an ammonia gas turbine power plant, an ammonia internal combustion power plant, or an ammonia fuel cell.
4. The cogeneration unit system according to any one of claims 1 to 3, wherein when said ammonia gas power generation unit is an ammonia gas turbine power generation unit, a first gas duct is provided on one side of the ammonia gas turbine power generation unit;
preferably, when the compression mode of the compressor in the ammonia gas turbine power generation device is multi-stage intercooling compression, the ammonia gas turbine power generation device is in circulating connection with the second heat exchange device through a second gas pipeline;
preferably, the second heat exchange device is respectively connected with the liquid ammonia storage device and the ammonia storage device.
5. The combined power plant system according to any one of claims 1 to 4, wherein a flue gas discharge duct is provided at one side of the first heat exchange device.
6. A cogeneration method using an ammonia fuel, characterized in that the cogeneration method is performed using the cogeneration apparatus system using an ammonia fuel according to any one of claims 1 to 5.
7. The combined power production method according to claim 6, characterized in that it comprises the steps of:
(1) Ammonia water in the liquid ammonia storage device enters a first heat exchange device to exchange heat with flue gas discharged from an ammonia power generation device to generate first ammonia gas;
(2) The first ammonia gas drives an ammonia gas turbine power generation device to generate power, the ammonia gas turbine power generation device discharges a second ammonia gas, and the second ammonia gas enters an ammonia gas storage device to be stored;
(3) And the second ammonia gas in the ammonia gas storage device is mixed with the gas conveyed in the first gas pipeline, and the mixed gas enters the ammonia gas power generation device together to drive the ammonia gas power generation device to generate power and generate flue gas.
8. The combined power production method according to claim 6 or 7, wherein the temperature of the flue gas of step (1) is 100 ℃ to 600 ℃;
preferably, the pressure of the first ammonia gas is 0.5MPa to 12MPa.
9. The combined power production method according to any one of claims 6 to 8, wherein the pressure of the gas transported in the first gas pipeline in step (3) is 10kPa to 3MPa;
preferably, the volume percentage of oxygen in the gas is 21% to 99.9%.
10. A combined power production method according to any of claims 6-9, characterized in that the combined power production method comprises the steps of:
(1) Ammonia water in the liquid ammonia storage device enters a first heat exchange device to exchange heat with flue gas discharged from an ammonia power generation device at the temperature of 100-600 ℃ to generate first ammonia gas with the pressure of 0.5-12 MPa;
(2) The first ammonia gas drives an ammonia gas turbine power generation device to generate power, the ammonia gas turbine power generation device discharges second ammonia gas, and the second ammonia gas enters an ammonia gas storage device to be stored;
(3) And the second ammonia gas in the ammonia gas storage device is mixed with the gas which is conveyed in the first gas pipeline and has the pressure of 10 kPa-3 MPa and the volume percentage content of oxygen of 21-99.9 percent, and the mixture enters an ammonia gas power generation device together to drive the ammonia gas power generation device to generate power and generate flue gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210802307.8A CN115217565A (en) | 2022-07-07 | 2022-07-07 | Combined power generation device system and method adopting ammonia fuel |
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| CN202210802307.8A CN115217565A (en) | 2022-07-07 | 2022-07-07 | Combined power generation device system and method adopting ammonia fuel |
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