CN214836583U - Biomass pure oxygen combustion power generation system - Google Patents

Biomass pure oxygen combustion power generation system Download PDF

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CN214836583U
CN214836583U CN202121188328.2U CN202121188328U CN214836583U CN 214836583 U CN214836583 U CN 214836583U CN 202121188328 U CN202121188328 U CN 202121188328U CN 214836583 U CN214836583 U CN 214836583U
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pure oxygen
flue gas
oxygen combustion
power generation
biomass
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张波
陆续
张向宇
向小凤
徐宏杰
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Xian Thermal Power Research Institute Co Ltd
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Xian Thermal Power Research Institute Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
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    • Y02P20/133Renewable energy sources, e.g. sunlight

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Abstract

The utility model discloses a biomass pure oxygen combustion power generation system, water electrolysis obtains hydrogen and oxygen, and oxygen reaches a pure oxygen combustion boiler; oxygen and fuel are combusted in a pure oxygen combustion boiler, generated raw flue gas is discharged to a flue gas purification system, heat generated by combustion of biomass fuel is connected into a steam turbine to do work through steam of a steam pipeline, a generator of a power plant is driven to generate power, meanwhile, power is supplied to a water electrolysis hydrogen production system, and heat energy conversion of the combustion biomass fuel is realized; flue gas purification system handles former flue gas and obtains solid useless and clean flue gas, and clean flue gas is arranged to carbon dioxide entrapment system in, obtains pure carbon dioxide to clean flue gas processing, collects the storage and utilizes, the utility model discloses to abandoning wind, abandoning light, abandoning the surplus electricity conversion among the energy production such as water, convert oxygen and hydrogen energy into, adopt oxygen to carry out combustion-supporting biomass fuel, save the heat, waste material and the waste gas that produce, when realizing energy conversion, can reduce the emission of carbon dioxide, realize the negative emission of carbon.

Description

Biomass pure oxygen combustion power generation system
Technical Field
The utility model relates to an energy saving and emission reduction field, concretely relates to living beings pure oxygen combustion power generation system.
Background
The phenomena of wind, light and water abandonment of the power plant are severe every year, and a large-scale energy storage system needs to be developed to meet the requirement of a power grid on the consumption of green energy. The hydrogen energy has the characteristics of high energy density, cleanness and high efficiency, and is regarded as the clean energy with the most development potential in the 21 st century.
Currently, over 99% of the global hydrogen consumption is produced by fossil fuels. The direct production of hydrogen from fossil fuels results in significant carbon emissions, contrary to our carbon neutralization goals. The high cost of hydrogen production by water electrolysis is mainly due to electric charge, and the cost is more than 2 times of that of fossil fuel. Coal-fired power plants are carbon dioxide emitting households. In the existing coal-fired generator set, the problem of carbon dioxide capture is not considered in the design stage, and if the carbon capture is realized by a modification mode, the process change is large, and the investment cost is high.
The biomass energy carbon trapping and sealing technology is a novel negative emission technology with great prospect. Because the carbon in the biomass comes from the atmospheric environment and is fixed through photosynthesis, and the biomass can generate a large amount of carbon dioxide in the combustion process, the utilization of the biomass energy is combined with the carbon capture and sealing technology, so that the carbon emission in the energy use process can be reduced, the carbon dioxide concentration in the air can be reduced, the carbon emission in the conventional energy production can be offset in the process, and the purpose of carbon neutralization is achieved; meanwhile, the biomass is burnt in the air, so that the utilization rate of the biomass is low.
SUMMERY OF THE UTILITY MODEL
The carbon that has the living beings burning among the prior art discharges and the higher problem of burning cost, the utility model provides a living beings pure oxygen combustion power generation system.
The utility model discloses a realize through following technical scheme:
a biomass pure oxygen combustion power generation system comprises an electrolyzed water hydrogen production system, a pure oxygen combustion boiler, a flue gas purification system, a carbon dioxide capture system and a power plant; an oxygen outlet of the water electrolysis hydrogen production system is connected with an air inlet of the pure oxygen combustion boiler and is powered by a power plant; the feed inlet of the pure oxygen combustion boiler is connected with the discharge outlet of the biomass fuel storage system, the exhaust outlet is connected with the raw flue gas inlet of the flue gas purification system, and the steam pipeline is connected to the steam turbine; the power output end of the steam turbine is connected with a generator of a power plant to generate electricity; the exhaust port of the flue gas purification system is connected with the air inlet of the carbon dioxide capture system; and a carbon dioxide gas outlet of the carbon dioxide capture system is connected with a gas inlet of the carbon dioxide storage and external supply system.
Further, a hydrogen outlet of the water electrolysis hydrogen production system is respectively connected with a hydrogen energy storage system and a hydrogen energy external supply system.
Furthermore, a steam pipeline of the pure oxygen combustion boiler is also connected to the heat exchange station.
Further, the flue gas purification system is provided with a clean flue gas circulation exhaust port which is connected with the air inlet of the pure oxygen combustion boiler.
Further, a solid waste outlet of the flue gas purification system is connected with a solid waste inlet of the plant ash storage and external supply system.
Further, a gas mixing device is arranged between the gas inlet of the pure oxygen combustion boiler and the oxygen outlet of the water electrolysis hydrogen production system.
Further, the input end of the gas mixing device is also provided with an air inlet.
Furthermore, the power plant also comprises solar power generation, hydraulic power generation or wind power generation.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model relates to a living beings pure oxygen combustion power generation system connects gradually electrolytic water system oxyhydrogen system, pure oxygen burning boiler, flue gas purification system and carbon dioxide entrapment system, electrolytic water hydrogen production system utilizes the residual electricity of power plant, electrolyzes water and forms oxygen and hydrogen, solves the waste of residual electricity, simultaneously arrange oxygen to pure oxygen burning boiler in, the burning of supplementary pure oxygen burning boiler inside biomass fuel makes the fuel burning more ideal, save biomass fuel, reduce the emission of flue gas, can combine the utilization of residual electricity simultaneously, reduce the cost of direct empty division; the heat energy generated by the pure oxygen combustion boiler is transferred to the steam turbine to do work from the steam pipeline, so that the generator of the power plant is driven to generate electricity, and the conversion of biomass energy to electric energy can be realized; flue gas generated by the pure oxygen combustion boiler is sequentially transmitted to the flue gas purification system and the carbon dioxide capture system, so that the flue gas can be purified, captured, stored and utilized. The system can achieve the purpose of negative carbon dioxide emission, eliminate waste in energy production such as wind abandonment, light abandonment, water abandonment and the like, and reduce carbon emission in the hydrogen energy production process.
Furthermore, the system is provided with a hydrogen energy storage system and a hydrogen energy and external supply system, so that the hydrogen can be stored and utilized, the energy is saved, and the utilization rate of the energy is improved.
Further, a solid waste outlet of the flue gas purification system is connected with a solid waste inlet of the plant ash storage and external supply system, and solid waste generated by pure oxygen combustion of biomass is plant ash without other impurities and can be used for fertilizing fields.
Further, be provided with gas mixing device between pure oxygen combustion boiler's the air inlet and the oxygen outlet of electrolysis water hydrogen manufacturing system, gas mixing device's input still is provided with air inlet, and gas mixing device adjusts the proportion of oxygen, clean flue gas and the air that gets into pure oxygen combustion boiler, can realize the regulation and control to the inside burning oxygen volume of pure oxygen combustion boiler and combustion temperature, and then improves biomass fuel's utilization ratio.
Drawings
FIG. 1 is a schematic diagram of a biomass pure oxygen combustion power generation system according to an embodiment of the present invention;
fig. 2 is a flow chart of a biomass pure oxygen combustion power generation system in an embodiment of the present invention.
In the figure: the system comprises an electrolytic water hydrogen production system 1, a pure oxygen combustion boiler 2, a flue gas purification system 3, a carbon dioxide capture system 4, a hydrogen energy storage system 11, a hydrogen energy external supply system 12, a power plant 13, a biomass fuel storage system 21, a steam turbine 22, a heat exchange station 23, a plant ash storage and external supply system 31 and a carbon dioxide storage and external supply system 41.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The utility model discloses to current trade demand, a living beings pure oxygen combustion power generation system that provides, utilize millet electricity hydrogen manufacturing, eliminated and abandoned wind, abandon light, abandon the waste in energy production such as water, carbon emission in the hydrogen energy production process has been reduced, the cost of pure oxygen burning has been reduced, the utilization that has realized living beings can be discharged with the burden of carbon, gu useless plant ash still can fertilize the field utilization, the last few, the technical route is reasonable, and there is not the technological difficulty that is difficult to overcome in the engineering implementation, can produce good economic benefits and social after implementing on a large scale.
A biomass pure oxygen combustion power generation system is shown in figure 2 and comprises an electrolyzed water hydrogen production system 1, a pure oxygen combustion boiler 2, a flue gas purification system 3 and a carbon dioxide capture system 4 which are connected in sequence; the gas outlet of the water electrolysis hydrogen production system 1 is connected with the gas inlet of the pure oxygen combustion boiler 2, and the power plant 13 provides power supply; further, a hydrogen outlet is connected with a hydrogen energy storage system 11 and a hydrogen energy external supply system 12, and hydrogen generated by electrolysis is collected, stored and utilized; the power plant 13 also comprises a water electrolysis hydrogen production system 1 which adopts solar energy, water energy or wind energy and the like, when the power plant generates residual electricity, the water electrolysis hydrogen production system is introduced into the system to perform electrolysis reaction with water to generate oxygen and hydrogen, so that the residual electricity is utilized, and the energy is saved.
The pure oxygen combustion boiler 2 adopts a multi-oxygen combustor, when in combustion, after biomass fuel enters a furnace, firstly primary root oxygen is mixed with part of the biomass fuel, root flame is formed during combustion, unburned biomass fuel enters a hearth, and after secondary oxygen enters the hearth and is fully contacted with the unburned biomass fuel, flameless flame is formed, so that violent reaction occurs and complete combustion is realized.
The feed inlet of pure oxygen combustion boiler 2 connects biomass fuel storage system 21's discharge gate, can realize continuously supplying biomass fuel for pure oxygen combustion boiler 2 and be used for the burning, the former flue gas entry of flue gas clean system 3 is connected to the exhaust port, steam conduit inserts steam turbine 22, can realize that the heat energy that pure oxygen combustion boiler 2 produced passes to steam turbine 22 from steam conduit and does work, drive steam turbine 22 and rotate, the generator electricity generation of power plant 13 is connected to the power take off end of steam turbine 22, be about to convert biomass energy into heat energy in proper order, the process of kinetic energy and electric energy.
The gas vent of gas cleaning system 3 is connected with the air inlet of carbon dioxide entrapment system 4, and is concrete, the solid waste that the burning of living beings pure oxygen produced is the plant ash, does not have other adulterations, can fertilize the field utilization, the plant ash storage is connected to the solid exhaust port and supplies system 31 outward, collect and save solid useless, the utilization in the later stage of being convenient for, further improve the utilization ratio of this system, wherein, can adopt cyclone with former flue gas rotary motion, thereby make the dust separate out under the effect of centrifugal force, obtain solid useless and clean flue gas.
Further, the flue gas purification system 3 is also provided with a clean flue gas circulation exhaust port which is connected with the air inlet of the pure oxygen combustion boiler 2 for adjusting the combustion temperature and realizing the self-adjustment of the internal system.
The carbon dioxide gas outlet of carbon dioxide trap 4 is connected with the air inlet of carbon dioxide storage and external supply system 41, and carbon dioxide in the clean flue gas of carbon dioxide trap 4 entrapment is exported to carbon dioxide storage and external supply system 41 and is stored, and the utilization in the later stage of being convenient for realizes the burden carbon emission of whole process simultaneously.
Specifically, according to the production requirement, the pure oxygen combustion boiler 2 can introduce partial air through an air inlet to realize oxygen-enriched combustion; meanwhile, a gas mixing device is arranged between the gas inlet of the pure oxygen combustion boiler 2 and the oxygen outlet of the electrolyzed water hydrogen production system 1, oxygen obtained by electrolysis, part of clean flue gas discharged by the flue gas purification system 3 and air are mixed according to a certain proportion to obtain mixed gas, and the mixed gas is introduced into the pure oxygen combustion boiler 2 to adjust the combustion oxygen amount and the combustion temperature in the combustion process, so that the utilization rate of the biomass fuel is improved.
When the biomass pure oxygen combustion power generation system is used, as shown in fig. 1, water is input into an electrolyzed water hydrogen production system 1, electrolysis is carried out to obtain hydrogen and oxygen, the generated hydrogen is respectively discharged to a hydrogen energy storage system 11 and a hydrogen energy external supply system 12 for storage and utilization, the oxygen is fed into a pure oxygen combustion boiler 2, a combustion-supporting material, namely oxygen, assists a biomass fuel to be combusted, raw flue gas is generated and is discharged to a flue gas purification system 3, the generated heat is connected into a steam turbine 22 through a steam pipeline to do work so as to drive a generator of a power plant 13 to generate power, the process realizes the process of converting biomass energy into heat energy, kinetic energy and electric energy, and particularly, the steam pipeline of the pure oxygen combustion boiler 2 can also be connected into a heat exchange station 23 for heating the heat exchange station 23;
the flue gas purification system 3 is handled former flue gas and is obtained solid useless and clean flue gas, and the collection to solid useless is realized to the solid waste of wasting discharge to plant ash storage and external supply system 31, contains a large amount of plant ash in the solid useless, and the plant ash can be used to the fertile field, has improved biomass fuel's overall utilization ratio.
The clean flue gas is discharged into the carbon dioxide capture system 4, according to the production requirement, the carbon dioxide capture system 4 can capture the carbon dioxide by adopting an absorption method, an adsorption method, a membrane separation method or a combined scheme, the carbon dioxide in the clean flue gas is captured by the carbon dioxide capture system 4 and is output to the carbon dioxide storage and external supply system 41, the carbon dioxide is collected and utilized, and the negative carbon emission is realized.
Further, inside flue gas circulation pipeline carried the gas mixing device of pure oxygen combustion boiler 2 to some clean flue gas after the raw flue gas purification system 3 purified, sent into the boiler after mixing with pure oxygen and air to adjust the oxygen content of burning and the combustion temperature of pure oxygen combustion boiler 2, improve biomass fuel's utilization ratio.

Claims (8)

1. A biomass pure oxygen combustion power generation system is characterized by comprising a water electrolysis hydrogen production system (1), a pure oxygen combustion boiler (2), a flue gas purification system (3), a carbon dioxide capture system (4) and a power plant (13);
an oxygen outlet of the water electrolysis hydrogen production system (1) is connected with an air inlet of the pure oxygen combustion boiler (2) and is powered by a power plant (13);
the feed inlet of the pure oxygen combustion boiler (2) is connected with the discharge outlet of the biomass fuel storage system (21), the exhaust outlet is connected with the raw flue gas inlet of the flue gas purification system (3), and the steam pipeline is connected to the steam turbine (22); the power output end of the steam turbine (22) is connected with a generator of the power plant (13) to generate electricity;
an exhaust port of the flue gas purification system (3) is connected with an air inlet of the carbon dioxide capture system (4);
and a carbon dioxide gas outlet of the carbon dioxide capturing system (4) is connected with a gas inlet of a carbon dioxide storage and external supply system (41).
2. The biomass pure oxygen combustion power generation system according to claim 1, wherein the hydrogen outlet of the water electrolysis hydrogen production system (1) is respectively connected with the hydrogen energy storage system (11) and the hydrogen energy external supply system (12).
3. The biomass pure oxygen combustion power generation system according to claim 1, wherein the steam pipeline of the pure oxygen combustion boiler (2) is further connected to a heat exchange station (23).
4. The biomass pure oxygen combustion power generation system according to claim 1, wherein the flue gas purification system (3) is provided with a clean flue gas circulation exhaust port which is connected with an air inlet of the pure oxygen combustion boiler (2).
5. The biomass pure oxygen combustion power generation system according to claim 1, wherein the solid waste outlet of the flue gas purification system (3) is connected with the solid waste inlet of the plant ash storage and external supply system (31).
6. The biomass pure oxygen combustion power generation system according to claim 1, characterized in that a gas mixing device is arranged between the gas inlet of the pure oxygen combustion boiler (2) and the oxygen outlet of the electrolyzed water hydrogen production system (1).
7. The biomass pure oxygen combustion power generation system according to claim 6, wherein the input end of the gas mixing device is further provided with an air inlet.
8. The biomass pure oxygen combustion power generation system according to claim 1, wherein the power plant (13) further comprises solar power generation, hydro power generation or wind power generation.
CN202121188328.2U 2021-05-28 2021-05-28 Biomass pure oxygen combustion power generation system Active CN214836583U (en)

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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