CN114665795A - Aluminum-based energy conversion system with zero carbon emission - Google Patents
Aluminum-based energy conversion system with zero carbon emission Download PDFInfo
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- CN114665795A CN114665795A CN202210428008.2A CN202210428008A CN114665795A CN 114665795 A CN114665795 A CN 114665795A CN 202210428008 A CN202210428008 A CN 202210428008A CN 114665795 A CN114665795 A CN 114665795A
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 113
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 105
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000007789 gas Substances 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 238000010248 power generation Methods 0.000 claims abstract description 20
- 238000000227 grinding Methods 0.000 claims abstract description 16
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 15
- 238000004146 energy storage Methods 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 230000000295 complement effect Effects 0.000 claims abstract description 8
- 239000002918 waste heat Substances 0.000 claims abstract description 8
- 230000004913 activation Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 20
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 150000002431 hydrogen Chemical group 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000004137 mechanical activation Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 238000003303 reheating Methods 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 239000002803 fossil fuel Substances 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 238000003860 storage Methods 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910020212 Na2SnO3 Inorganic materials 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910001610 cryolite Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 150000004673 fluoride salts Chemical class 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
- H02S10/12—Hybrid wind-PV energy systems
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/08—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents with metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/16—Electric current supply devices, e.g. bus bars
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a zero-carbon-emission aluminum-based energy conversion system which comprises a wind-solar complementary power generation aluminum production system, a super capacitor and lithium battery hybrid energy storage system, a combustion chamber, a grinding device, a condenser, a gas-solid separation device, a gas turbine, a primary steam turbine, a secondary steam turbine, a heat exchanger, a steam generator, a primary generator and a secondary generator. Aiming at the problem of high energy consumption of electrolytic aluminum, new energy is adopted to directly prepare aluminum and store excess energy; aiming at the reduction of the reaction activity of the aluminum surface oxide film, the combination of various activation modes is adopted to improve the reaction efficiency; aiming at the problem of how to utilize the waste heat of the system, water is utilized for heat exchange, the waste heat of each stage of the system is fully utilized, and the heat loss is reduced. The whole energy conversion system does not consume fossil fuel, and the input energy is new energy mainly comprising solar energy and wind energy, so that zero carbon emission is realized.
Description
Technical Field
The invention relates to an aluminum-based energy conversion system with zero carbon emission.
Background
The rapid development of human society and the large use of fossil fuels lead to environmental problems such as atmospheric pollution, overproof carbon emission, greenhouse effect and the like, and the traditional energy sources represented by petroleum and coal mines have the problem of yield reduction in the future, so that people are forced to preferentially consider abundant resources and environment-friendly resources when selecting energy sources. The aluminum is a metal element with the largest content in the earth crust, has the advantages of wide source, higher energy density, no toxicity, stable storage and the like, can be used as a large-scale energy storage carrier, is electrolyzed by new energy to prepare the aluminum, is transported to a power generation place, and can solve the problem of unstable energy supply of the new energy. However, in an aluminum-based energy conversion system, because an oxidation reaction easily occurs on the surface of aluminum, a dense oxide film is generated, and the reaction is prevented from proceeding, in order to ensure that the reaction is sufficiently performed, the existing method mainly comprises the following steps: (1) the surface oxide film is removed by alkali liquor, the operation is simple, but the corrosion to equipment is caused, and the service life is reduced; (2) the oxide film on the surface of the aluminum particles is damaged through the activation of the additive, so that the aluminum continuously reacts with water at normal temperature, but the preparation and storage requirements of the additive are high, the continuous and efficient reaction is difficult, and the price of part of the additive is high; (3) the grain diameter of the aluminum particles is ground to be nano-grade by using a mechanical grinding mode, the reaction activity of the aluminum particles is improved, and the full reaction is ensured, but the high activity of the superfine aluminum powder makes the superfine aluminum powder difficult to store in the air at normal temperature, must be stored in inert gas and difficult to use under normal conditions; (4) high temperature activation is relied on, but the requirement on equipment is high, good refractory materials are required to be used, and the manufacturing cost is increased. In addition, the existing system has insufficient heat utilization in the reaction process, so that part of available energy is lost, and the cost of the aluminum-based energy system is overhigh and the energy utilization rate is low. For a related system of aluminum-based energy conversion, the technical difficulty to be solved urgently is how to ensure higher energy conversion rate while reducing the power generation cost.
Disclosure of Invention
Aiming at the problems, the invention provides an aluminum-based energy conversion system with zero carbon emission by analyzing the quality and the combination of various technologies and utilizing the combination of various technologies on the basis of considering environmental protection and reducing system cost, and the energy conversion system taking aluminum as fuel is obtained by utilizing a new energy aluminum production mode, a combined activation mode and a waste heat utilization mode.
The invention is realized by adopting the following technical scheme:
a zero-carbon-emission aluminum-based energy conversion system comprises a wind-solar complementary power generation aluminum production system, an aluminum water reactor, a steam generator, a gas-solid separation device, a heat exchanger, a condenser, a gas turbine, a primary steam turbine, a secondary steam turbine, a primary generator and a secondary generator;
electrolyzing aluminum by using electric energy generated by a wind-solar complementary power generation aluminum production system;
conveying the newly manufactured aluminum blocks to an aluminum water reactor, wherein the aluminum water reactor consists of a grinding device, a combustion chamber and heating equipment, the heating equipment is used for reheating water returned from the system to enable the water to meet the reaction requirement, the aluminum blocks are ground to be small in particle size in the grinding device and then are conveyed to the combustion chamber, and the reaction rate of the aluminum water is promoted by using high temperature;
the main component of the gas from the combustion chamber is hydrogen mixed with trace aluminum powder particles and water vapor, the mixed gas is subjected to primary heat exchange through a steam generator, heat is transferred to water to generate water vapor, and the water vapor enters a secondary steam turbine to do work to push a secondary generator to generate electricity;
separating the mixture of the aluminum powder particles and the gas by a gas-solid separation device to obtain a mixed high-temperature gas of hydrogen and water vapor; feeding the hydrogen-water mixed gas into a heat exchanger, and heating the recycled liquid water by using waste heat; hydrogen-water mixed gas enters a condenser, liquid water and hydrogen are separated in a cooling and condensing mode, the hydrogen is sent to a gas turbine to be combusted and release heat, the gas turbine is pushed to do work, the high-temperature steam which comes out is sent to a first-stage steam turbine to do work, a first-stage generator is pushed to generate power, and meanwhile liquid water is obtained; the liquid water obtained by the condenser and the steam turbine is recycled, one part of the liquid water is used as a raw material for aluminum-based reaction in the combustion chamber, and the other part of the liquid water is heated by the heat exchanger and then sent to the steam generator for recycling.
The invention has the further improvement that the wind-solar hybrid power generation aluminum production system consists of a wind driven generator, a solar panel, a controller, a super capacitor and a lithium battery hybrid energy storage system; when the electric energy generated by wind power generation and solar power generation is excessive, the surplus energy is used for directly preparing aluminum, and the wind power generator and the solar panel charge the hybrid energy storage system of the super capacitor and the lithium battery through the controller to store the electric energy.
The invention is further improved in that when the electric energy is insufficient, the electric energy stored by the super capacitor and the lithium battery is controlled by the controller to be input into the electrolytic bath, so that the stable energy supply of the aluminum production process is ensured.
The further improvement of the invention is that the new energy capacity utilization ways are divided into direct aluminum production and excess energy storage, when the capacity is excessive, the excess electric energy is stored through a hybrid energy storage system of a super capacitor and a lithium battery, and if the capacity is insufficient, the power supply in the aluminum production process is ensured to be continuous and stable through the timely stored energy supplement.
The further improvement of the invention is that the high-temperature activation and mechanical activation of the reaction aluminum are coupled, the aluminum block firstly enters a grinding chamber, the grain diameter of the aluminum block is ground by the mechanical grinding method and then is sent to a combustion chamber, saturated wet steam with the temperature of more than 230 ℃ is introduced, the aluminum powder can be strongly oxidized, the conversion rate is close to 100 percent, and the reaction time lasts for tens of seconds.
The invention is further improved in that the grinding is carried out mechanically in a grinding device to a particle size of 20 μm or less.
A further development of the invention consists in that 2mol/LNaAlO are added to the aluminum water reactor2The solution further improves the activity of the aluminum.
A further improvement of the invention consists in adding Na to the aluminum water reactor2SnO3Or NaOH solids to further increase the activity of the aluminum.
The invention has at least the following beneficial technical effects:
(1) the surplus wind and light energy are stored by taking aluminum as an energy carrier, and the nonuniformity of new energy power generation on time and space is solved by a heat and power cogeneration system taking aluminum as fuel.
(2) The outlet water of the secondary steam turbine has higher temperature and is led to the reactor to improve the initial temperature of reactants; the heat exchanger is used for exchanging heat, so that the temperature of water entering the steam generator is increased, and the steam generation difficulty is reduced; the water entering the steam generator comes from a combined branch of the gas turbine and the first-stage steam turbine, and the energy of the water at the outlet of the combined branch is fully utilized; condensate at the condenser, slightly below saturation temperature, is also fed to the generator. The heat energy is fully utilized in the production process, and the total energy utilization rate is improved.
(3) The gas turbine and the steam turbine are used for combined power generation, the gas turbine fully utilizes the low-grade heat of the hydrogen, and the generated steam is introduced into the steam turbine to do work for power generation.
(4) The whole aluminum-based energy conversion system essentially uses wind energy and solar energy to replace fossil fuel, new energy which is abundant in reserves, environment-friendly and unstable is used as a storage medium in an aluminum form to replace the fossil fuel, substances generated in the process are mainly water vapor, and the substances are recycled in the reaction system, so that zero carbon emission is realized.
Drawings
FIG. 1 is a schematic diagram of a zero carbon emission aluminum-based energy conversion system of the present invention;
fig. 2 is a schematic diagram of the waste heat utilization route of the zero-carbon-emission aluminum-based energy conversion system of the invention.
Description of reference numerals:
1 is an aluminum water reactor, 2 is a steam generator, 3 is a gas-solid separation device, 4 is a heat exchanger, 5 is a condenser, 6 is a gas turbine, 7 is a first-stage steam turbine, 8 is a first-stage generator, 9 is Al2O3The device comprises a channel, a channel 10, an electrolytic bath, a channel 11, a controller 12, a lithium battery 14, a super capacitor 13, a cryolite channel, a fluoride salt channel and an inert anode material channel 15, a secondary steam turbine 16, a secondary generator 17, a wind and light complementary power generation system 18, an excess electricity storage process 19, a liquid water channel 20, a water supplementing channel 21, a high-temperature water vapor channel 22, a hydrogen channel 23 and a low-temperature water vapor channel 24.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the zero-carbon-emission aluminum-based energy conversion system provided by the invention comprises an aluminum water reactor 1, a steam generator 2, a gas-solid separation device 3, a heat exchanger 4, a condenser 5, a gas turbine 6, a primary steam turbine 7, a primary generator 8 and Al2O3A channel 9, an electrolytic bath 10, an aluminum purification, clarification and casting process 11, a controller 12, a lithium battery 14, a super capacitor 13, a cryolite, fluoride salt and inert anode material channel 15, a secondary steam turbine 16, a secondary generator 17, a wind and light complementary power generation system 18, an excess electric quantity storage process 19, a liquid water channel 20, a water replenishing channel 21,a high-temperature water vapor passage 22, a hydrogen gas passage 23, and a low-temperature water vapor passage 24. The system integrates an aluminum water reaction heat release process, a waste heat utilization process and a multi-stage preheating process, adopts a method of performing gas-solid separation by using a membrane material, combines a new energy aluminum production process, and utilizes an aluminum water reaction to perform cogeneration.
(1) Northwest China has abundant wind energy and solar energy, but is limited by the problems of transportation and unstable new energy, and is difficult to directly generate electricity on a large scale. An aluminum production plant is built in a place with rich wind and light energy, and the wind and light complementary power generation system 18 is used for generating electric energy for directly electrolyzing and producing aluminum to realize the storage of energy. In order to ensure the stable energy supply in the aluminum production process, a hybrid energy storage system of the super capacitor 13 and the lithium battery 14 is introduced, when the generated energy of the unit is excessive, the excessive electric quantity is introduced into the hybrid energy storage system of the super capacitor 13 and the lithium battery 14 for storage, and if the generated energy of the unit is insufficient, the electric energy in the hybrid energy storage system of the super capacitor 13 and the lithium battery 14 is released for supplement, so that the stable aluminum production process is ensured. And transporting the prepared aluminum blocks to a power generation place to realize storage and transportation of new energy.
(2) Sending an aluminum block into an aluminum water reactor 1, wherein the aluminum water reactor 1 consists of a grinding device, heating equipment and a combustion chamber, the aluminum block firstly enters the grinding device, the particle size of aluminum particles is ground to be less than 20 mu m by utilizing a mechanical grinding (such as ball milling) mode, the aluminum block is sent into the combustion chamber, saturated wet steam at 350 ℃ is introduced, the aluminum particles become more plastic at high temperature, meanwhile, the saturated wet steam promotes solid deformation, the mechanical strain on the aluminum particles causes the damage of surface oxide films, so that the aluminum can fully react with water, the reaction time is about 66s, the conversion rate is close to 100%, and meanwhile, NaAlO can be selectively added into the reactor 12Or Na2SnO3E.g. Na2SnO30.1g of NaOH and 0.2g of NaOH, so as to further improve the activity of the aluminum.
(3) The aluminum reacts with saturated wet steam in the aluminum water reactor 1 to generate hydrogen, two-phase mixed gas of the hydrogen, the water vapor and aluminum oxide particles comes out from the reactor 1, the mixed gas is introduced into the steam generator 2 to absorb part of heat by liquid water, and the liquid water is converted into the water vapor and is introduced into the secondary steam turbine 16 to do work to push the secondary generator 17 to work. An outlet of the steam generator 2 is provided with a gas-solid separation device 3 for separating alumina particles, and the alumina particles can be used as raw materials to be sent to an aluminum production plant after being collected. The remaining hydrogen-water mixed gas is heated and recycled by the heat exchanger 4 to form liquid water, then the liquid water is cooled, condensed and separated by the condenser 5 to form mixed water vapor, pure hydrogen is obtained and then the pure hydrogen is sequentially sent to the gas turbine 6 and the first-stage steam turbine 7 to do work, the first-stage generator 8 is pushed to generate electricity, after the liquid water obtained in the process absorbs heat by the heat exchanger 4, part of the liquid water is sent to the steam generator 2 to be recycled, and part of the liquid water is sent to the aluminum water reactor 1 to be converted into saturated wet steam by the heating equipment to participate in the reaction.
In order to ensure the smooth process of the process when the new energy is adopted for the electrolytic production of aluminum, a hybrid energy storage system of a super capacitor 13 and a lithium battery 14 is required to be introduced for storing the surplus electric energy, and the surplus electric energy is supplemented when the electric energy is not supplied enough; the mist that comes out from the aluminium water reactor contains solid particle, can lead to the fact destruction to the steam turbine blade, consequently, the mist need carry out the edulcoration before getting into the steam turbine, but because the mist temperature is too high, directly get rid of not only extravagant energy also to the higher requirement of equipment simultaneously, consequently, the mist is advanced to be gone into steam generator 2, give water heat transfer, loop through gas-solid separation again, heat exchanger, get into the steam turbine at last, realize the ladder grade utilization of waste heat, and energy utilization rate is improved. Meanwhile, the energy conversion system essentially stores unstable new energy in the form of aluminum to replace fossil fuel, and the main substance generated in the process is water and participates in the whole energy system again, so that zero carbon emission is realized.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The aluminum-based energy conversion system with zero carbon emission is characterized by comprising a wind-solar complementary power generation aluminum production system, an aluminum water reactor (1), a steam generator (2), a gas-solid separation device (3), a heat exchanger (4), a condenser (5), a gas turbine (6), a primary steam turbine (7), a secondary steam turbine (16), a primary generator (8) and a secondary generator (17);
electrolyzing aluminum by using electric energy generated by a wind-solar complementary power generation aluminum production system;
conveying the newly manufactured aluminum blocks to an aluminum water reactor (1), wherein the aluminum water reactor (1) consists of a grinding device, a combustion chamber and a heating device, the heating device is used for reheating water returned from the system to enable the water to meet the reaction requirement, the aluminum blocks are ground to be small in particle size in the grinding device and then sent to the combustion chamber, and the reaction rate of the aluminum water is promoted by using high temperature;
the main component of gas from the combustion chamber is hydrogen, trace aluminum powder particles and water vapor are mixed, the mixed gas is subjected to primary heat exchange through a steam generator (2), heat is transferred to water to generate water vapor, and the water vapor enters a secondary steam turbine (16) to do work to push a secondary generator (17) to generate electricity;
separating the mixture of the aluminum powder particles and the gas by a gas-solid separation device (3) to obtain a mixture of hydrogen and water vapor; feeding the hydrogen-water mixed gas into a heat exchanger (4), and heating the recycled liquid water by using waste heat; hydrogen-water mixed gas enters a condenser (5), liquid water and hydrogen are separated in a cooling and condensing mode, the hydrogen is sent to a gas turbine (6) to be combusted and released, the gas turbine (6) is pushed to do work, the high-temperature steam which comes out is sent to a first-stage steam turbine (7) to do work, a first-stage generator (8) is pushed to generate power, and meanwhile liquid water is obtained; the liquid water obtained by the condenser (5) and the steam turbine is recycled, one part of the liquid water is used as a raw material for aluminum-based reaction in the combustion chamber, and the other part of the liquid water is heated by the heat exchanger (4) and then sent to the steam generator (2) for recycling.
2. The zero-carbon-emission aluminum-based energy conversion system as claimed in claim 1, wherein the wind-solar hybrid power generation aluminum production system is composed of a wind power generator, a solar panel, a controller (12), a super capacitor (13) and a lithium battery (14) hybrid energy storage system; when the electric energy generated by wind power generation and solar power generation is surplus, the surplus energy except the energy directly used for manufacturing aluminum is used for charging the hybrid energy storage system of the super capacitor (13) and the lithium battery (14) through the controller (12) by the wind power generator and the solar panel, and the electric energy is stored.
3. The system as claimed in claim 2, wherein when the electric energy is insufficient, the electric energy stored in the super capacitor (13) and the lithium battery (14) is controlled by the controller (12) to be input into the electrolytic cell to ensure a stable energy supply for the aluminum production process.
4. The system for converting aluminum-based energy with zero carbon emission as claimed in claim 3, wherein the new energy capacity utilization path is divided into direct aluminum production and excess energy storage, when the capacity is excessive, the excess energy is stored by the super capacitor (13) and lithium battery (14) hybrid energy storage system, and if the capacity is insufficient, the power supply is kept stable and stable in the aluminum production process by timely supplementing the stored energy.
5. The aluminum-based energy conversion system with zero carbon emission as claimed in claim 1, wherein the reaction aluminum high-temperature activation and mechanical activation are coupled, the aluminum block firstly enters the grinding chamber, the particle size of the aluminum block is ground by the mechanical grinding and then sent to the combustion chamber, saturated wet steam with the temperature of 230 ℃ above is introduced, the aluminum powder is strongly oxidized, the conversion rate is close to 100%, and the reaction time lasts for tens of seconds.
6. The system of claim 5, wherein the grinding device is configured to mechanically grind the aluminum-based energy conversion system to a particle size of 20 μm or less.
7. According to the rightThe zero-carbon-emission aluminum-based energy conversion system as claimed in claim 1, wherein 2mol/L AlO is added into the aluminum water reactor (1)2The solution further improves the activity of the aluminum.
8. The system of claim 1, wherein Na is added to the Al-water reactor (1)2SnO3Or NaOH solids to further increase the activity of the aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210428008.2A CN114665795B (en) | 2022-04-22 | 2022-04-22 | Aluminum-based energy conversion system with zero carbon emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210428008.2A CN114665795B (en) | 2022-04-22 | 2022-04-22 | Aluminum-based energy conversion system with zero carbon emission |
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| CN115893314A (en) * | 2022-10-13 | 2023-04-04 | 清华大学 | Aluminum water hydrogen production device and energy storage system |
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| US20090019853A1 (en) * | 2006-01-24 | 2009-01-22 | Bengt Nilsson | Method and Arrangement for Energy Conversion in Stages |
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| US20090019853A1 (en) * | 2006-01-24 | 2009-01-22 | Bengt Nilsson | Method and Arrangement for Energy Conversion in Stages |
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