CN118122215A - Wind-solar hydrogen storage ammonia alcohol integrated system and operation method - Google Patents
Wind-solar hydrogen storage ammonia alcohol integrated system and operation method Download PDFInfo
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 160
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 160
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 148
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000003860 storage Methods 0.000 title claims abstract description 62
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims description 21
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 220
- 239000007789 gas Substances 0.000 claims abstract description 103
- 239000002028 Biomass Substances 0.000 claims abstract description 99
- 238000000197 pyrolysis Methods 0.000 claims abstract description 81
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 58
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 58
- 238000010248 power generation Methods 0.000 claims abstract description 50
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 48
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000004202 carbamide Substances 0.000 claims abstract description 40
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000002309 gasification Methods 0.000 claims abstract description 30
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 24
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 12
- 238000004146 energy storage Methods 0.000 claims description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 20
- 239000002918 waste heat Substances 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 18
- 239000001301 oxygen Substances 0.000 claims description 18
- 229910052760 oxygen Inorganic materials 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 14
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 13
- 238000003763 carbonization Methods 0.000 claims description 13
- 239000000446 fuel Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 10
- 239000003546 flue gas Substances 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 7
- 230000002194 synthesizing effect Effects 0.000 claims description 7
- 239000010902 straw Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 claims description 3
- 210000003608 fece Anatomy 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000010871 livestock manure Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
Classifications
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a wind-solar hydrogen-storage ammonia-alcohol integrated system and an operation method, wherein the wind-solar hydrogen-storage ammonia-alcohol integrated system comprises a biomass methanol-producing system, a wind-solar hydrogen-producing system, a pyrolysis gas power generation system and a hydrogen synthesis urea system, the wind-solar hydrogen-producing system generates power through a wind power system and a photovoltaic power generation system, electrolyzes water to produce hydrogen, the biomass methanol-producing system uses biomass as a raw material to carry out pyrolysis gasification to prepare pyrolysis gas and synthesizes methanol together with hydrogen prepared by the wind-solar hydrogen-producing system, pyrolysis gas generated by the biomass methanol-producing system is used as a standby power supply of the wind-solar hydrogen-producing system in the pyrolysis gas power generation system, and the hydrogen synthesis urea system separates nitrogen in air and hydrogen generated by the wind-solar hydrogen-producing system to synthesize ammonia and then synthesizes urea with carbon dioxide in pyrolysis gas of the biomass methanol-producing system. The invention realizes the high-efficiency utilization of wind, light and biomass energy.
Description
Technical Field
The invention relates to an integrated system and an operation method, in particular to a wind-solar hydrogen storage ammonia alcohol integrated system and an operation method, and belongs to the technical field of green energy.
Background
Currently, the widespread use of renewable energy sources presents several challenges, one of which is the uncertainty of energy supply due to the intermittent nature of wind and solar energy, and therefore there is a need to address efficient storage and conversion means to ensure efficient use of energy. A potential solution for the mainstream is to convert renewable energy into hydrogen using the technology of producing hydrogen by electrolysis of water, however this process introduces a new problem: hydrogen presents a difficult transportation challenge, its liquefaction requires very low temperatures (-253 ℃) to be reached, and the energy costs of the liquefaction process are quite high. Therefore, in order to optimize the practical benefit of renewable energy sources in downstream applications, there is a need to explore innovative hydrogen reuse co-production schemes. On the other hand, biomass utilization often involves a complex treatment process, and if biomass gasification is adopted, problems such as feed continuity, more tar generation, greater corrosiveness of gaseous products and the like need to be solved. Meanwhile, in the process of further converting the gasification product into methanol, it is also important to effectively utilize the released carbon dioxide gas in order to minimize adverse effects on the environment. In view of the foregoing, it is necessary to provide a comprehensive energy utilization system, which can effectively integrate methods such as biomass alcohol production, water electrolysis hydrogen production, space division nitrogen production, and the like, optimize the transportation paths of green electricity and green hydrogen, and fully reuse surplus energy products such as carbon dioxide waste gas, synthesis gas waste heat, and the like, so as to provide a renewable energy utilization scheme with higher efficiency, sustainability and economy.
Disclosure of Invention
The invention aims to solve the technical problem of providing a wind-light hydrogen-storage ammonia-alcohol integrated system and an operation method thereof, which realize the efficient utilization of wind-light and biomass energy.
In order to solve the technical problems, the invention adopts the following technical scheme:
The wind-solar hydrogen-ammonia alcohol integrated system comprises a biomass methanol-producing system, a wind-solar hydrogen-producing system, a pyrolysis gas power generation system and a hydrogen synthesis urea system, wherein the wind-solar hydrogen-producing system generates power through a wind power system and a photovoltaic power generation system and electrolyzes water to produce hydrogen, the biomass methanol-producing system uses biomass as a raw material to carbonize, then carries out pyrolysis gasification to prepare pyrolysis gas and synthesizes methanol together with hydrogen prepared by the wind-solar hydrogen-producing system, the pyrolysis gas generated by the biomass methanol-producing system is used as a standby power supply of the wind-solar hydrogen-producing system when the pyrolysis gas generated by the biomass methanol-producing system generates power in the pyrolysis gas power generation system, and the hydrogen synthesis urea system separates nitrogen in air from hydrogen generated by the wind-solar hydrogen-producing system to synthesize ammonia and then synthesizes urea with carbon dioxide in the pyrolysis gas of the biomass methanol-producing system.
Further, the biomass methanol-to-methanol system comprises biomass carbonization equipment, a gasification furnace and a methanol synthesis tower, wherein biomass is input into a feed inlet of the biomass carbonization equipment, biological carbon powder prepared by the biomass carbonization equipment is pyrolyzed in the gasification furnace to generate pyrolysis gas, the pyrolysis gas comprises hydrogen, carbon monoxide and carbon dioxide, and the pyrolysis gas and the hydrogen prepared by the wind-solar hydrogen-making system are together synthesized into methanol in the methanol synthesis tower.
Further, the biomass comprises one or more of straw, wood, and animal manure.
Further, the pressure of the gasification furnace is controlled to be 4.0MPa, the temperature is controlled to be 700-800 ℃, the pressure of the methanol synthesis tower is controlled to be 6.0MPa, and the temperature is controlled to be 300-350 ℃.
Further, the wind-solar hydrogen production system comprises a wind power system, a photovoltaic power generation system, an electric energy storage device, an electrolytic tank and hydrogen storage equipment, wherein electric energy generated by the wind power system and the photovoltaic power generation system is used for supplying power to the electric energy storage device and the electrolytic tank, water is electrolyzed by the electrolytic tank to prepare hydrogen and oxygen, and the hydrogen prepared by the electrolytic tank is sent into the hydrogen storage equipment for storage.
Further, the electric energy storage device adopts one or more of a gravity energy storage device, a chemical energy storage device and a storage battery energy storage device.
Further, the pyrolysis gas power generation system comprises a gas turbine, a waste heat boiler and a steam turbine, the gas turbine adopts pyrolysis gas of the biomass methanol production system to generate power and supplies power for an electrolytic tank of the wind-solar hydrogen production system, high-temperature flue gas of the gas turbine recovers heat energy through a waste heat recovery system, a part of the recovered heat energy heats the waste heat boiler to generate steam, the steam is introduced into the steam turbine to generate power and supplies power for the electrolytic tank of the wind-solar hydrogen production system, and the other part of the recovered heat energy respectively supplies heat energy for the biomass methanol production system and the hydrogen synthesis urea system.
Further, the hydrogen synthesis urea system comprises air separation equipment, a synthesis ammonia tower and urea synthesis equipment, the air separation equipment separates nitrogen and oxygen from air, the separated nitrogen and the biomass methanol preparation system produce hydrogen to synthesize ammonia in the synthesis ammonia tower, and the ammonia and carbon dioxide in pyrolysis gas in the biomass methanol preparation system synthesize urea.
Further, the pressure of the air separation device is controlled at 30MPa, the temperature is controlled at 20-40 ℃, the pressure of the synthetic ammonia tower is controlled at 30MPa, and the temperature is controlled at 400 ℃.
A wind-solar hydrogen storage ammonia alcohol integrated operation method comprises the following steps:
S1, electric energy generated by power generation of a wind power system and a photovoltaic power generation system is used for supplying power to an electrolytic tank, water is electrolyzed by the electrolytic tank to prepare hydrogen and oxygen, the pressure of the electrolytic tank is controlled to be 1.6-3.2MPa, the temperature is controlled to be 80-90 ℃, and the prepared hydrogen is stored in hydrogen storage equipment;
S2, putting biomass into biomass carbonization equipment to carbonize at 160 ℃ to obtain biomass carbon powder, putting the biomass carbon powder into a gasifier, controlling the pressure of the gasifier to be 4.0MPa, controlling the temperature to be 700-800 ℃, introducing oxygen prepared by electrolyzing water in an electrolytic tank into the gasifier and/or separating oxygen separated by air separation equipment, returning slag generated by the gasifier to the field, introducing part of pyrolysis gas generated by the gasifier into a methanol synthesis tower to continuously and circularly synthesize methanol, controlling the pressure of the methanol synthesis tower to be 6.0MPa, controlling the temperature to be 300-350 ℃, and introducing carbon dioxide discharged from the methanol synthesis tower into urea synthesis equipment;
s3, controlling the pressure of the air separation equipment at 30MPa, controlling the temperature at 20-40 ℃, separating air by the air separation equipment to obtain oxygen and nitrogen, synthesizing ammonia gas by the nitrogen and hydrogen in the hydrogen storage equipment in a synthesis ammonia tower, controlling the pressure of the synthesis ammonia tower at 30MPa, controlling the temperature at 400 ℃, synthesizing urea by the ammonia gas and carbon dioxide from the methanol synthesis tower in a urea synthesis equipment, and enabling the urea to be used for replacing biomass;
s4, when the generated energy of the wind power system and the photovoltaic power generation system is larger than the power consumption of the electrolytic tank, the electric energy storage equipment works to store the surplus generated energy;
S5, when the hydrogen storage amount of the hydrogen storage device is larger than a preset maximum value, stopping the operation of the electrolytic tank or reducing the power, and storing the redundant generated energy by the electric energy storage device;
S6, when the generated energy of the wind power system and the photovoltaic power generation system is smaller than the electricity consumption of the electrolytic tank, preferentially consuming the hydrogen stored in the hydrogen storage equipment, and when the hydrogen stored in the hydrogen storage equipment is smaller than a preset minimum value, starting the electric energy storage equipment to supply power for the electrolytic tank;
S7, when the generated energy of the wind power system and the photovoltaic power generation system is smaller than the electric energy consumption of the electrolytic tank, no hydrogen is stored in the hydrogen storage equipment, and no electric energy is stored in the electric energy storage equipment, the pyrolysis gas power generation system is started, and part of pyrolysis gas generated by the gasification furnace is sent into the gas turbine for power generation and supplies power for the electrolytic tank; when the pyrolysis gas generator system is started, a part of methanol prepared by the biomass methanol preparation system is firstly introduced to serve as starting fuel to start the gas turbine, after the gas turbine runs stably, methanol is stopped being input, and then pyrolysis gas is input to serve as power generation fuel;
s8, recovering heat energy in high-temperature waste gas of the gas turbine through a waste heat recovery system, wherein a part of the recovered heat energy is sent into a waste heat boiler to generate steam, the steam is sent into the steam turbine to generate power and supply power for the electrolytic cell, and the other part of the recovered heat energy is sent into the gasification furnace to supply heat energy for the gasification furnace.
Compared with the prior art, the invention has the following advantages and effects:
1. The invention provides a wind-solar hydrogen storage ammonia alcohol integrated system, which takes wind-solar power generation as a main energy source of the system, then takes biomass as a raw material to carry out pyrolysis gasification to obtain pyrolysis gas of hydrogen, carbon monoxide and carbon dioxide, and prepares methanol by the hydrogen in the pyrolysis gas, the carbon monoxide and hydrogen prepared by electrolyzed water, thereby realizing the high-efficiency utilization of bioenergy in biomass;
2. The invention realizes chemical balance, highly utilizes raw materials, and the ratio of hydrogen to carbon monoxide in pyrolysis gas obtained by biomass pyrolysis is 1:2, and the ratio of hydrogen to carbon monoxide in methanol synthesis is 4:2 (namely 2:1), so that 3 hydrogen gases are required to be complemented in pyrolysis gas to realize chemical balance, and the 3 hydrogen gases are complemented by wind, light and electric energy to electrolyze water to produce hydrogen, thereby completing the high-efficiency application of all raw materials of biomass and realizing chemical balance;
3. According to the invention, the fluctuation characteristic of wind-solar power generation is combined, the energy balance is realized by using a main-to-secondary logic sequence of the hydrogen storage device, the electric energy storage device and the gas turbine, when the energy is sufficient, the hydrogen storage is preferentially carried out to store wind-solar energy sources, when the energy is insufficient, the electric energy storage device is used for storing electric energy, the hydrogen storage is preferentially consumed, the electric energy storage is secondarily consumed, and finally the gas turbine is used for generating power by using pyrolysis gas as a fuel to serve as a standby power supply, so that the energy balance is realized, the whole system does not need power supply of an external power grid, and all energy sources are only pure green energy sources of wind, light and biomass;
4. the slag obtained after biomass gasification pyrolysis is rich in fertilizers such as potassium chloride, carbon and hydrogen elements in biomass are completely utilized, and the residual substances are returned to the field for recycling;
5. according to the invention, the hydrogen and the carbon monoxide in the pyrolysis gas are completely synthesized into the methanol, and the rest carbon dioxide in the pyrolysis gas is synthesized into the urea together with the ammonia gas, so that the full utilization of carbon and hydrogen elements in biomass is realized, no carbon dioxide emission is realized, zero carbon emission is realized, the synthesized urea can replace biomass raw materials such as straw with peasants, the raw material problem is solved, and the reasonable commercial operation of the whole system is realized;
6. According to the invention, the gas turbine generates power by taking the pyrolysis gas as the fuel, the generated high-temperature flue gas is recovered by the waste heat recovery system, the heat energy is generated by the waste heat boiler, and the steam is sent into the steam turbine for power generation, so that the recovery of the heat energy of the flue gas is realized, and the energy efficiency of the pyrolysis gas is improved.
Drawings
FIG. 1 is a schematic diagram of a wind-solar hydrogen storage ammonia alcohol integrated system according to the present invention.
Detailed Description
In order to explain in detail the technical solutions adopted by the present invention to achieve the predetermined technical purposes, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that technical means or technical features in the embodiments of the present invention may be replaced without inventive effort, and the present invention will be described in detail below with reference to the accompanying drawings in combination with the embodiments.
As shown in fig. 1, the wind-solar hydrogen-ammonia alcohol storage integrated system comprises a biomass methanol preparation system, a wind-solar hydrogen preparation system, a pyrolysis gas power generation system and a hydrogen synthesis urea system, wherein the wind-solar hydrogen preparation system generates power through a wind power system and a photovoltaic power generation system and electrolyzes water to prepare hydrogen, the biomass methanol preparation system uses biomass as a raw material to carbonize and then carries out pyrolysis gasification to prepare pyrolysis gas and synthesize methanol together with hydrogen prepared by the wind-solar hydrogen preparation system, the pyrolysis gas generated by the biomass methanol preparation system is used as a standby power supply of the wind-solar hydrogen preparation system when the pyrolysis gas power generation system generates power, and the hydrogen synthesis urea system separates nitrogen in air from the hydrogen generated by the wind-solar hydrogen preparation system to synthesize ammonia and then synthesizes urea with carbon dioxide in pyrolysis gas of the biomass methanol preparation system.
The biomass methanol-making system comprises biomass carbonization equipment, a gasification furnace and a methanol synthesis tower, wherein biomass is input into a feed inlet of the biomass carbonization equipment, biomass carbon powder prepared by the biomass carbonization equipment is pyrolyzed in the gasification furnace to generate pyrolysis gas, the pyrolysis gas comprises hydrogen, carbon monoxide and carbon dioxide, and the pyrolysis gas and the hydrogen prepared by the wind-solar hydrogen-making system are synthesized into methanol in the methanol synthesis tower.
Biomass comprises one or more of straw, wood, and animal manure.
The pressure of the gasification furnace is controlled at 4.0MPa, the temperature is controlled at 700-800 ℃, the pressure of the methanol synthesis tower is controlled at 6.0MPa, and the temperature is controlled at 300-350 ℃. The biomass carbonization equipment adopts a double-cylinder double-hearth structure, converts biomass into carbon powder through high-temperature pyrolysis, realizes homogenization treatment of biomass to the greatest extent, and effectively solves common blocking materials and material scattered temperature bases in biomass gasification feeding links, thereby providing a reliable basis for efficient utilization of biomass fuel.
The wind-solar hydrogen production system comprises a wind power system, a photovoltaic power generation system, an electric energy storage device, an electrolytic tank and hydrogen storage equipment, wherein electric energy generated by the wind power system and the photovoltaic power generation system is used for supplying power to the electric energy storage device and the electrolytic tank, water is electrolyzed by the electrolytic tank to prepare hydrogen and oxygen, and the hydrogen prepared by the electrolytic tank is sent into the hydrogen storage equipment for storage.
The electric energy storage device adopts one or more of gravity energy storage device, chemical energy storage device and storage battery energy storage device.
The pyrolysis gas power generation system comprises a gas turbine, a waste heat boiler and a steam turbine, wherein the gas turbine adopts pyrolysis gas of a biomass methanol production system to generate power and supplies power for an electrolytic tank of a wind-solar hydrogen production system, high-temperature flue gas of the gas turbine recovers heat energy through a waste heat recovery system, a part of the recovered heat energy heats the waste heat boiler to generate steam, the steam is introduced into the steam turbine to generate power and supply power for the electrolytic tank of the wind-solar hydrogen production system, and the other part of the recovered heat energy respectively supplies heat energy for the biomass methanol production system and the hydrogen synthesis urea system.
The hydrogen synthesis urea system comprises air separation equipment, a synthesis ammonia tower and urea synthesis equipment, wherein the air separation equipment separates nitrogen and oxygen from air, the separated nitrogen and a biomass methanol-producing system produce hydrogen to synthesize ammonia in the synthesis ammonia tower, and the ammonia and carbon dioxide in pyrolysis gas in the biomass methanol-producing system synthesize urea.
The pressure of the air separation equipment is controlled at 30MPa, the temperature is controlled at 20-40 ℃, the pressure of the synthetic ammonia tower is controlled at 30MPa, and the temperature is controlled at 400 ℃.
A wind-solar hydrogen storage ammonia alcohol integrated operation method comprises the following steps:
S1, electric energy generated by power generation of a wind power system and a photovoltaic power generation system is used for supplying power for an electrolytic tank, water is electrolyzed by the electrolytic tank to prepare hydrogen and oxygen, the pressure of the electrolytic tank is controlled to be 1.6-3.2MPa, the temperature is controlled to be 80-90 ℃, and the prepared hydrogen is stored in hydrogen storage equipment. The wind power system and the photovoltaic power generation system can generate electric energy which can be directly connected to a power grid, and redundant electric energy is sold, so that better economic benefits are achieved.
S2, putting biomass into biomass carbonization equipment to carbonize at 160 ℃ to obtain biomass carbon powder, putting the biomass carbon powder into a gasifier, controlling the pressure of the gasifier to be 4.0MPa, controlling the temperature to be 700-800 ℃, introducing oxygen prepared by electrolysis of water in an electrolytic tank into the gasifier and/or separating oxygen separated by air separation equipment, discharging slag generated by the gasifier through liquid slag discharging equipment and returning to the field, introducing part of pyrolysis gas generated by the gasifier into a methanol synthesis tower to continuously and circularly synthesize methanol, controlling the pressure of the methanol synthesis tower to be 6.0MPa, controlling the temperature to be 300-350 ℃, and introducing carbon dioxide discharged from the methanol synthesis tower into urea synthesis equipment.
S3, controlling the pressure of the air separation equipment at 30MPa, controlling the temperature at 20-40 ℃, separating air by the air separation equipment to obtain oxygen and nitrogen, synthesizing ammonia gas by the nitrogen and hydrogen in the hydrogen storage equipment in a synthesis ammonia tower, controlling the pressure of the synthesis ammonia tower at 30MPa, controlling the temperature at 400 ℃, synthesizing urea by the ammonia gas and carbon dioxide coming out of the methanol synthesis tower in a urea synthesis equipment, and enabling the urea to be used for replacing biomass. The invention uses urea and the brand new commercial mode of replacing biomass raw materials such as straw with potash fertilizer slag of gasification furnace and farmers, thus realizing the in-situ treatment of the final urea product, and the replacement mode and the direct purchasing mode are easier for farmers to accept, thereby forming the operation mode of economically good raw materials and products, and realizing good economic benefit of the whole integrated system.
And S4, when the generated energy of the wind power system and the photovoltaic power generation system is larger than the electricity consumption of the electrolytic tank, the electric energy storage equipment works to store the surplus generated energy.
And S5, when the hydrogen storage quantity of the hydrogen storage device is larger than a preset maximum value, stopping the operation of the electrolytic tank or reducing the power, and storing the energy of the redundant generated energy by the electric energy storage device.
And S6, when the generated energy of the wind power system and the photovoltaic power generation system is smaller than the electricity consumption of the electrolytic tank, preferentially consuming the hydrogen stored in the hydrogen storage equipment, and when the hydrogen stored in the hydrogen storage equipment is smaller than a preset minimum value, starting the electric energy storage equipment to supply power for the electrolytic tank.
And S7, when the generated energy of the wind power system and the photovoltaic power generation system is smaller than the electric energy consumption of the electrolytic tank, no hydrogen is stored in the hydrogen storage equipment, and no electric energy is stored in the electric energy storage equipment, the pyrolysis gas power generation system is started, and part of pyrolysis gas generated by the gasification furnace is sent into the gas turbine for power generation and is supplied to the electrolytic tank. When the pyrolysis gas generator system is started, a part of methanol prepared by the biomass methanol preparation system is firstly introduced to serve as starting fuel to start the gas turbine, after the gas turbine operates stably, methanol input is stopped, and then pyrolysis gas is input to serve as power generation fuel.
S8, recovering heat energy in high-temperature waste gas of the gas turbine through a waste heat recovery system, wherein a part of the recovered heat energy is sent into a waste heat boiler to generate steam, the steam is sent into the steam turbine to generate power and supply power for the electrolytic cell, and the other part of the recovered heat energy is sent into the gasification furnace to supply heat energy for the gasification furnace.
The invention provides a wind-solar hydrogen storage ammonia alcohol integrated system, which takes wind-solar power generation as a main energy source of the system, then takes biomass as a raw material to carry out pyrolysis gasification to obtain pyrolysis gas of hydrogen, carbon monoxide and carbon dioxide, and prepares methanol by the hydrogen in the pyrolysis gas, the carbon monoxide and hydrogen prepared by electrolysis of water, thereby realizing the efficient utilization of bioenergy in biomass. The invention realizes chemical balance, highly utilizes raw materials, and the ratio of hydrogen to carbon monoxide in pyrolysis gas obtained by biomass pyrolysis is 1:2, and the ratio of hydrogen to carbon monoxide in methanol synthesis is 4:2 (i.e. 2:1), so 3 hydrogen gases are needed to be complemented in pyrolysis gas to realize chemical balance, and the 3 hydrogen gases are complemented by wind, light and electric energy to electrolyze water to prepare hydrogen, thereby completing the high-efficiency application of all raw materials of biomass and realizing chemical balance. According to the invention, the fluctuation characteristic of wind-solar power generation is combined, the energy balance is realized by using a logic sequence of a hydrogen storage device, an electric energy storage device and a gas turbine from main to secondary, when the energy is sufficient, the hydrogen storage is preferentially carried out to realize the storage of wind-solar energy sources, when the energy is insufficient, the electric energy storage device is used for storing electric energy, when the wind-solar energy sources are insufficient, the hydrogen storage is preferentially consumed, the electric energy storage is secondarily consumed, and finally the gas turbine is used for generating power by using pyrolysis gas as a fuel to serve as a standby power supply, so that the energy balance is realized, the whole system does not need power supply of an external power grid, and all the energy sources are only wind-solar energy and biomass pure green energy sources. The slag obtained after biomass gasification pyrolysis is rich in fertilizers such as potassium chloride, carbon and hydrogen elements in biomass are completely utilized, and the residual substances are returned to the field for recycling. According to the invention, the hydrogen and the carbon monoxide in the pyrolysis gas are completely synthesized into the methanol, and the rest carbon dioxide in the pyrolysis gas is synthesized into the urea together with the ammonia gas, so that the full utilization of carbon and hydrogen elements in biomass is realized, no carbon dioxide is discharged, zero carbon discharge is realized, and the synthesized urea can replace biomass raw materials such as straw with peasants, so that the raw material problem is solved, and the reasonable commercial operation of the whole system is realized. According to the invention, the gas turbine generates power by taking the pyrolysis gas as the fuel, the generated high-temperature flue gas is recovered by the waste heat recovery system, the heat energy is generated by the waste heat boiler, and the steam is sent into the steam turbine for power generation, so that the recovery of the heat energy of the flue gas is realized, and the energy efficiency of the pyrolysis gas is improved.
The present invention is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other embodiments, such as those described above, of making various modifications and equivalents will fall within the spirit and scope of the present invention.
Claims (10)
1. A scene stores up hydrogen ammonia alcohol integration system which characterized in that: the biomass methanol-to-methanol system uses biomass as a raw material, and then carries out pyrolysis gasification to prepare pyrolysis gas and synthesizes methanol together with hydrogen prepared by the wind-to-light hydrogen-preparing system, the pyrolysis gas generated by the biomass methanol-to-methanol system is used as a standby power supply of the wind-to-light hydrogen-preparing system in the power generation of the wind-to-light power-generating system, and the hydrogen synthesis urea system separates nitrogen in air from hydrogen generated by the wind-to-light hydrogen-preparing system, synthesizes ammonia with carbon dioxide in the pyrolysis gas of the biomass methanol-to-light system after synthesizing the ammonia.
2. The wind-solar hydrogen storage ammonia alcohol integrated system according to claim 1, wherein: the biomass methanol-to-methanol system comprises biomass carbonization equipment, a gasification furnace and a methanol synthesis tower, wherein biomass is input into a feed inlet of the biomass carbonization equipment, biomass carbon powder prepared by the biomass carbonization equipment is thermally decomposed in the gasification furnace to generate pyrolysis gas, the pyrolysis gas comprises hydrogen, carbon monoxide and carbon dioxide, and the pyrolysis gas and the hydrogen prepared by the wind-light hydrogen-making system are together synthesized into methanol in the methanol synthesis tower.
3. The wind-solar hydrogen storage ammonia alcohol integrated system according to claim 2, wherein: the biomass comprises one or more of straw, wood and animal manure.
4. The wind-solar hydrogen storage ammonia alcohol integrated system according to claim 2, wherein: the pressure of the gasification furnace is controlled to be 4.0MPa, the temperature is controlled to be 700-800 ℃, the pressure of the methanol synthesis tower is controlled to be 6.0MPa, and the temperature is controlled to be 300-350 ℃.
5. The wind-solar hydrogen storage ammonia alcohol integrated system according to claim 1, wherein: the wind-solar hydrogen production system comprises a wind power system, a photovoltaic power generation system, an electric energy storage device, an electrolytic tank and hydrogen storage equipment, wherein electric energy generated by the wind power system and the photovoltaic power generation system is used for supplying power to the electric energy storage device and the electrolytic tank, water is electrolyzed by the electrolytic tank to prepare hydrogen and oxygen, and the hydrogen prepared by the electrolytic tank is sent into the hydrogen storage equipment for storage.
6. The wind-solar hydrogen storage ammonia alcohol integrated system according to claim 1, wherein: the electric energy storage device adopts one or more of gravity energy storage device, chemical energy storage device and storage battery energy storage device.
7. The wind-solar hydrogen storage ammonia alcohol integrated system according to claim 5, wherein: the pyrolysis gas power generation system comprises a gas turbine, a waste heat boiler and a steam turbine, wherein the gas turbine adopts pyrolysis gas of a biomass methanol production system to generate power and supplies power for an electrolytic tank of a wind-solar hydrogen production system, high-temperature flue gas of the gas turbine recovers heat energy through a waste heat recovery system, a part of the recovered heat energy heats the waste heat boiler to generate steam, the steam is introduced into the steam turbine to generate power and supply power for the electrolytic tank of the wind-solar hydrogen production system, and the other part of the recovered heat energy respectively supplies heat energy for the biomass methanol production system and the hydrogen synthesis urea system.
8. The wind-solar hydrogen storage ammonia alcohol integrated system according to claim 1, wherein: the hydrogen synthesis urea system comprises air separation equipment, a synthesis ammonia tower and urea synthesis equipment, wherein the air separation equipment separates nitrogen and oxygen from air, the separated nitrogen and a biomass methanol-producing system produce hydrogen to synthesize ammonia in the synthesis ammonia tower, and the ammonia and carbon dioxide in pyrolysis gas in the biomass methanol-producing system synthesize urea.
9. The wind-solar hydrogen storage ammonia alcohol integrated system according to claim 8, wherein: the pressure of the air separation equipment is controlled at 30MPa, the temperature is controlled at 20-40 ℃, the pressure of the synthetic ammonia tower is controlled at 30MPa, and the temperature is controlled at 400 ℃.
10. The wind-solar hydrogen storage ammonia alcohol integrated operation method is characterized by comprising the following steps of:
S1, electric energy generated by power generation of a wind power system and a photovoltaic power generation system is used for supplying power to an electrolytic tank, water is electrolyzed by the electrolytic tank to prepare hydrogen and oxygen, the pressure of the electrolytic tank is controlled to be 1.6-3.2MPa, the temperature is controlled to be 80-90 ℃, and the prepared hydrogen is stored in hydrogen storage equipment;
S2, putting biomass into biomass carbonization equipment to carbonize at 160 ℃ to obtain biomass carbon powder, putting the biomass carbon powder into a gasifier, controlling the pressure of the gasifier to be 4.0MPa, controlling the temperature to be 700-800 ℃, introducing oxygen prepared by electrolyzing water in an electrolytic tank into the gasifier and/or separating oxygen separated by air separation equipment, returning slag generated by the gasifier to the field, introducing part of pyrolysis gas generated by the gasifier into a methanol synthesis tower to continuously and circularly synthesize methanol, controlling the pressure of the methanol synthesis tower to be 6.0MPa, controlling the temperature to be 300-350 ℃, and introducing carbon dioxide discharged from the methanol synthesis tower into urea synthesis equipment;
s3, controlling the pressure of the air separation equipment at 30MPa, controlling the temperature at 20-40 ℃, separating air by the air separation equipment to obtain oxygen and nitrogen, synthesizing ammonia gas by the nitrogen and hydrogen in the hydrogen storage equipment in a synthesis ammonia tower, controlling the pressure of the synthesis ammonia tower at 30MPa, controlling the temperature at 400 ℃, synthesizing urea by the ammonia gas and carbon dioxide from the methanol synthesis tower in a urea synthesis equipment, and enabling the urea to be used for replacing biomass;
s4, when the generated energy of the wind power system and the photovoltaic power generation system is larger than the power consumption of the electrolytic tank, the electric energy storage equipment works to store the surplus generated energy;
S5, when the hydrogen storage amount of the hydrogen storage device is larger than a preset maximum value, stopping the operation of the electrolytic tank or reducing the power, and storing the redundant generated energy by the electric energy storage device;
S6, when the generated energy of the wind power system and the photovoltaic power generation system is smaller than the electricity consumption of the electrolytic tank, preferentially consuming the hydrogen stored in the hydrogen storage equipment, and when the hydrogen stored in the hydrogen storage equipment is smaller than a preset minimum value, starting the electric energy storage equipment to supply power for the electrolytic tank;
S7, when the generated energy of the wind power system and the photovoltaic power generation system is smaller than the electric energy consumption of the electrolytic tank, no hydrogen is stored in the hydrogen storage equipment, and no electric energy is stored in the electric energy storage equipment, the pyrolysis gas power generation system is started, and part of pyrolysis gas generated by the gasification furnace is sent into the gas turbine for power generation and supplies power for the electrolytic tank; when the pyrolysis gas generator system is started, a part of methanol prepared by the biomass methanol preparation system is firstly introduced to serve as starting fuel to start the gas turbine, after the gas turbine runs stably, methanol is stopped being input, and then pyrolysis gas is input to serve as power generation fuel;
s8, recovering heat energy in high-temperature waste gas of the gas turbine through a waste heat recovery system, wherein a part of the recovered heat energy is sent into a waste heat boiler to generate steam, the steam is sent into the steam turbine to generate power and supply power for the electrolytic cell, and the other part of the recovered heat energy is sent into the gasification furnace to supply heat energy for the gasification furnace.
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