CN111853762A - Zero-carbon-emission energy conversion system based on metal fuel - Google Patents

Zero-carbon-emission energy conversion system based on metal fuel Download PDF

Info

Publication number
CN111853762A
CN111853762A CN201910786342.3A CN201910786342A CN111853762A CN 111853762 A CN111853762 A CN 111853762A CN 201910786342 A CN201910786342 A CN 201910786342A CN 111853762 A CN111853762 A CN 111853762A
Authority
CN
China
Prior art keywords
metal
combustion
fuel
energy conversion
carbon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910786342.3A
Other languages
Chinese (zh)
Inventor
张家瑞
马立坤
夏智勋
冯运超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National University of Defense Technology
Original Assignee
National University of Defense Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by National University of Defense Technology filed Critical National University of Defense Technology
Priority to CN201910786342.3A priority Critical patent/CN111853762A/en
Publication of CN111853762A publication Critical patent/CN111853762A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
    • F23C10/06—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone the circulating movement being promoted by inducing differing degrees of fluidisation in different parts of the bed
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • F23C10/24—Devices for removal of material from the bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • F23C10/24—Devices for removal of material from the bed
    • F23C10/26—Devices for removal of material from the bed combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts
    • 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
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The invention discloses a zero-carbon emission energy conversion system based on metal fuel, which comprises a metal particle supply device, an air source, a metal combustion system, a metal electrolysis reduction system and a heat engine, wherein the metal particle supply device conveys metal fuel particles to the metal combustion system to be combusted with an oxidant conveyed by the air source to generate an oxidation reaction, heat generated by the oxidation reaction is converted into secondary energy through the heat engine, solid metal oxide generated in the oxidation reaction is conveyed to the metal electrolysis reduction system to perform a reduction reaction, metal generated after the reduction reaction is processed into metal fuel particles and then conveyed to the metal combustion system again through the metal particle supply device, so that the metal fuel can be recycled, compared with the traditional thermal power generation, the metal fuel combustion does not generate any toxic substance or greenhouse gas, and the carbon emission level is 7 g/kW.h through experimental measurement, only 6.7 per mill of coal-fired power generation. The purposes of zero carbon emission and stable combustion power supply are achieved.

Description

Zero-carbon-emission energy conversion system based on metal fuel
Technical Field
The invention belongs to the field of metal fuel and renewable energy, and particularly relates to a zero-carbon-emission energy conversion system based on metal fuel.
Background
At present, the proportion of fossil fuel in world energy consumption reaches more than 80%, but the fossil fuel has potential energy crisis and is easy to cause regional fluctuation. More troublesome is that the exploitation, transportation and combustion of fossil fuels can cause great damage to the environment, and particularly, the combustion of hydrocarbon fuels can emit greenhouse gases, cause global climate change and cause serious ecological problems. Therefore, the search for environmentally friendly renewable energy has been a focus of international social attention. In the twenty-first century, the application of renewable energy sources is rapidly developed, the power generation amount accounts for more than 20% of the total global power generation amount, but the renewable energy sources represented by water power, wind power and solar energy have obvious volatility, randomness and regional distribution imbalance, and if the renewable energy sources are applied in a large scale, the stability of the whole power grid can be adversely affected, so that the renewable energy sources become one of the key factors for restricting the further development of the renewable energy sources. There is therefore a need to find new energy storage vehicles that can be recycled to address the energy crisis.
Disclosure of Invention
The invention aims to solve the technical problem of providing a zero-emission energy conversion system based on metal fuel, which can realize stable combustion, can convert secondary energy by using heat released by combustion, can recycle and reutilize products after combustion and does not generate greenhouse gas.
In order to solve the problem, the technical scheme adopted by the invention is as follows:
the zero-carbon emission energy conversion system based on the metal fuel comprises a metal particle supply device, an air source, a metal combustion system, a metal electrolysis reduction system and a heat engine, wherein the metal particle supply device conveys metal fuel particles to the metal combustion system to be combusted with an oxidant conveyed by the air source to generate an oxidation reaction, heat generated by the oxidation reaction is converted into secondary energy through the heat engine, a metal solid oxide generated in the oxidation reaction is conveyed to the metal electrolysis reduction system to perform a reduction reaction, and metal generated after the reduction reaction is processed into the metal fuel particles and then conveyed to the metal combustion system again through the metal particle supply device.
Furthermore, the metal combustion system comprises a combustion chamber, a heat exchanger, a gas-solid separator and a metal oxide collector, metal fuel particles are conveyed into the combustion chamber through a metal particle supply device and are combusted with an oxidant provided by a gas source to generate an oxidation reaction, waste heat in waste gas generated by combustion is recovered through the heat exchanger, and after the temperature of the waste gas is reduced, metal solid oxide in the waste gas is collected into the metal oxide collector through the gas-solid separator.
Further, the metal particle supply device comprises positive and negative electrode plates which are opposite and vertical, the positive and negative electrode plates are respectively connected with the positive and negative electrodes of the direct current power supply, an insulating material is surrounded on the peripheries of the positive and negative electrode plates which are opposite and vertical, a sealed cavity is formed between the insulating material and the positive and negative electrode plates which are opposite and vertical, a through hole is formed in the negative electrode plate, a powder conveying pipe connected with the combustion chamber is inserted into the through hole, air is introduced into the sealed cavity to serve as fluidizing gas, and the fluidizing gas is mixed with the metal fuel particles dispersed by the electric field and then is conveyed into the combustion chamber through the powder conveying pipe.
Further, the particle size of the metal fuel particles is 5-10 microns.
Further, the powder conveying pipe is made of ceramic materials.
Further, the oxidant is air or a mixture of air and oxygen.
Further, the metal fuel particles are aluminum and iron.
Further, the metal electrolysis reduction system uses a renewable energy power generation system for power supply.
Further, the secondary energy source is electrical or mechanical energy.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to a zero-carbon emission energy conversion system based on metal fuel, which can stably burn by using the metal fuel, wherein the heat energy generated by the metal fuel in the oxidation reaction process can drive a heat engine to carry out thermoelectric conversion to output electric energy or mechanical energy, gas-solid separation is carried out on waste gas generated by burning, solid metal oxide in the waste gas is recovered, the metal oxide is subjected to electrolytic reduction reaction by a metal electrolytic reduction system, and the reduced metal is used as the metal fuel again after passing through a metal granulation technology, so that the metal fuel can be recycled. The carbon emission level of the system is only 7 g/kW.h and only 6.7 per mill of coal-fired power generation through experimental measurement. Substantially zero carbon emissions are achieved.
Drawings
FIG. 1 is a schematic diagram of the energy conversion of the present invention;
FIG. 2 is a schematic view of a metal thermoelectric conversion system;
FIG. 3 is a pictorial view of an energy conversion device of the present invention;
FIG. 4 is a schematic view of a metal particle supply apparatus using electric field dispersion;
FIG. 5 is a schematic view of a combustion chamber;
fig. 6 is a schematic diagram of the energy density of a common fuel and a metal fuel.
Fig. 7 is a schematic diagram of an aluminum-based thermal power plant system.
Detailed Description
Fig. 1 to 7 show an embodiment of a zero-carbon-emission energy conversion system based on metal fuel according to the present invention, which includes a metal particle supply device, a gas source, a metal combustion system, a metal electrolysis reduction system, and a heat engine, wherein the metal particle supply device supplies metal fuel particles to the metal combustion system, the metal fuel particles are combusted with an oxidant supplied by the gas source to generate an oxidation reaction, heat generated by the oxidation reaction is converted into secondary energy by the heat engine, a metal solid oxide generated in the oxidation reaction is supplied to the metal electrolysis reduction system to perform a reduction reaction, and metal generated after the reduction reaction is processed into metal fuel particles and then supplied to the metal combustion system again by the metal particle supply device. The invention uses metal as fuel to replace traditional fossil fuel, especially metal powder fuel represented by aluminum and iron, and has the characteristics of abundant reserves, convenient transportation, high combustion heat value, environmental protection and the like, the combustion product is mainly solid metal oxide, no toxic substance or greenhouse gas is generated, and the experimental measurement shows that the carbon emission level is 7 g/kW.h, and is only 6.7 per mill of coal-fired power generation. And the metal fuel can be recycled, after the metal is combusted to generate oxidation reaction, a large amount of heat energy generated by the oxidation reaction can be subjected to thermoelectric conversion through a heat engine to output electric energy or generate mechanical energy by acting externally, and the metal oxide generated by combustion can be subjected to metal electrolytic reduction to obtain the combustible high-heat-value metal fuel again, so that the metal fuel can be recycled. Compared with renewable energy sources such as wind energy, solar energy and the like, the solar energy power generation device does not depend on weather factors, can stably burn to generate power and can be recycled. In this embodiment, the oxidant is air or a mixture of air and oxygen. A mixture of air and oxygen may be used for combustion supporting immediately after ignition of the metal fuel, and only air may be supplied when combustion is stable.
In this embodiment, the metal combustion system includes a combustion chamber, a heat exchanger, a gas-solid separator and a metal oxide collector, and the metal fuel particles are conveyed into the combustion chamber through the metal particle supply device and are combusted with an oxidant provided by the gas source to generate an oxidation reaction, and the waste gas generated by the combustion recovers the waste heat in the waste gas through the heat exchanger, and after the temperature of the waste gas is reduced, the metal oxide solid in the waste gas is collected into the metal oxide collector through the gas-solid separator. The working principle of the metal combustion system is as follows: the metal particle supply device fluidizes and conveys metal fuel particles to the combustion chamber, the metal fuel particles are combusted in the combustion chamber and release a large amount of heat under the action of heat wake, then the heat engine utilizes the heat energy to generate electricity or do work outwards, in addition, the heat carried by waste gas generated by combustion passes through the heat exchanger, water in the heat exchanger can be heated into hot water or water vapor for industrial production or domestic use, the temperature of the waste gas is reduced after the waste gas passes through the heat exchanger, and then the metal oxide particles in the waste gas are separated and collected into the metal oxide collector through the gas-solid separator. In this embodiment, the heat exchanger mainly reduces the temperature of the exhaust gas, and can heat the condensing agent in the heat exchanger, and the condensing agent is generally water. The gas-solid separator is mainly used for recovering metal oxides, waste gas is introduced into the gas-solid separator, gas-solid two-phase flow carrying metal oxide particles enters the gas-solid separator along the tangential direction to form a rotational flow, the speed of the metal oxide particles is gradually reduced after the metal oxide particles collide with the wall surface of the separator and fall into a collector at the bottom, and waste gas can be directly discharged into the environment.
In this embodiment, in order to promote the combustion of the metal aluminum particles and create a thermal environment suitable for the ignition and combustion of the aluminum particles, the combustion chamber employs a planar flame burner as shown in fig. 5, specifically, the combustion chamber is named as a micron-sized metal particle ignition combustion test device as application No. 201611143143.3. The burner uses methane for combustion in the initial stage of combustion, and the oxidant is a mixture of air and oxygen. After passing through the gas flow controller, air and oxygen are firstly primarily mixed with methane gas in a premixing cavity of the flat flame furnace through an oxidant pipeline, and then are further fully mixed through a steel ball area, wherein the steel ball is made of 304 stainless steel. To ensure the homogeneity of the premixed flame downstream of the burner plate, the burner plate surface was provided with a large number of micropores with a diameter of 0.8 mm. In order to prevent cold air in the environment from interfering with the planar flame burner and affecting the flame temperature, a rectangular protective cover with a length of 600mm was installed downstream of the furnace plate in this experiment. After the metal fuel particles are stably combusted in the combustor, the methane gas is shut off, and combustion is performed only by using the metal fuel particles.
In this embodiment, the metal fuel particles have a particle size of 5-10 microns, and the metal particles can be treated by application number 94114891.2, entitled: the superfine homogeneous aluminum powder is obtained by the preparation method.
In this embodiment, the metal particle supply device includes positive and negative electrode plates facing each other, the positive and negative electrode plates are respectively connected to positive and negative electrodes of the dc power supply, an insulating material is surrounded around the positive and negative electrode plates facing each other, a sealed cavity is formed between the insulating material and the positive and negative electrode plates facing each other, a through hole is formed in the negative electrode plate, a powder conveying pipe connected to the combustion chamber is inserted into the through hole, air is introduced into the sealed cavity as fluidizing gas, and the fluidizing gas is mixed with the metal particles dispersed by the electric field to form a gas-solid two-phase flow, which enters the combustion chamber through the powder conveying pipe. In the embodiment, the periphery between the positive plate and the negative plate is sealed by using an insulating material, namely polytetrafluoroethylene, to form a sealed cavity, air is introduced to serve as fluidizing gas, and under the action of the fluidizing gas, after the two plates are electrified, the metal particles reciprocate between the plates under the action of electric field force, and the dispersed metal particles are mixed with the fluidizing gas to form a gas-solid two-phase flow which is input into the combustion chamber through the powder conveying pipe. In the embodiment, the powder conveying pipe is made of a ceramic material and has the characteristics of insulation and high temperature resistance, and in the embodiment, the powder conveying pipe is 1mm in inner diameter, 2mm in outer diameter and 200mm in length. The distance between the positive electrode plate and the negative electrode plate is adjustable, and gas-solid two-phase flow (mixture of the fluidized gas and the metal particles) with different particle concentrations can be obtained by adjusting the voltage between the two electrode plates and the flow rate of the fluidized gas.
In this embodiment, the metal fuel particles used are aluminum and iron, but it is needless to say that magnesium, sodium, potassium and various alloy powders may be used, because these two metals are most stored in the earth crust.
The metal electrolytic reduction system in this embodiment is only required to be reduced by a conventional metal electrolytic reduction method. Electrolytic aluminum is a well established technology. The metal electrolytic reduction system uses a renewable energy power generation system for power supply. Renewable energy refers to solar energy, wind energy, and the like. The metal electrolysis reduction system and the metal combustion system do not need to be finished in one place, and as the solid metal fuel is convenient to store and transport, the 'energy' trade can be carried out between different countries and regions by land transportation or sea transportation; the power is generated in an energy demand place in a metal combustion mode, and the generated solid metal oxide is collected and transported to an area rich in renewable energy sources for metal electrolytic reduction, so that a cycle is completed. The energy input of the whole system is renewable energy sources such as solar energy, wind energy and the like, and the system does not generate greenhouse gases theoretically.
The present invention can achieve better effects than thermal power generation as shown in the following theory and experiments.
The ideal fuel should have the characteristics of abundant reserves, low price, safety, no toxicity, high energy density and the like. Aluminum (8 wt%) and iron (5 wt%) are two most abundant metals in the earth crust, and the combustion products are solid metal oxides, and do not generate any toxic, harmful substances and greenhouse gases during combustion. The volumetric energy density and the mass energy density of the metal fuel can be calculated according to the combustion heat value of the metal fuel, as shown in fig. 6, the volumetric energy density of the metal aluminum and the metal iron is much higher than that of the fossil fuel such as diesel oil, gasoline, liquefied natural gas and the like, but after the metal is granulated, the packing density of the metal powder is not more than 64% of the original metal density due to the existence of the filling gaps, so the energy density of the metal powder is generally 30-50% of the original energy density. Even so, the energy density of the aluminum particles (33.48 MJ/dm)3About 9300Wh/L) is still 30 times that of the lithium battery. Therefore, from the viewpoint of energy storage per unit volume, aluminum metal has great advantages as an energy storage carrier. And the metal powder fuel represented by aluminum and iron has the characteristics of abundant reserves, convenient transportation, high combustion heat value, environmental protection and the like, and the combustion product is mainly solid metal oxide, does not generate any toxic substance or greenhouse gas, and is expected to become a solution for replacing fossil fuel in the future.
Taking metallic aluminum as an example, firstly, the reduction process of alumina is described, in the industry, raw materials such as bauxite, anode paste and the like and a large amount of electric energy are consumed for smelting metallic aluminum at present, and the energy consumed for obtaining the required raw materials and the energy consumed in the smelting process are shown in table 1.
TABLE 1 energy required for 1 kg of aluminum
Mass (kg) Energy (MJ)
Bauxite ore 4 1.1
Refining of alumina / 26.1
Anode paste 0.54 2.4
Heating alumina / 14
Electric energy / 56
Total up to 100
1 kg of aluminum is smelted by 100MJ of energy, in the system, the aluminum oxide is recycled, so the consumed energy is about:
100-1.1-26.1＝72.8MJ/kg
the mass energy density of metal aluminum is 31MJ/kg, so the theoretical cycle efficiency of adopting aluminum as an energy storage carrier is as follows:
31MJ/72.8MJ＝43％
(II) in the aluminum-fired power generation process, the thermal power generation efficiency is defined as:
ηpg＝ηhηtηg(1)
wherein eta ish、ηt、ηgThe heat transfer efficiency of the boiler, the turbine efficiency and the generator efficiency, respectively. The heat transfer efficiency is defined as:
Figure BDA0002178168590000061
wherein q is1For heat loss of the exhaust gas, q2Is a loss of heat from the slag. The aluminum particles do not generate any gas during combustion, the main component of the flue gas is nitrogen in the air, the temperature of the discharged flue gas is assumed to be 125 ℃, and the reaction equation is carried out according to the temperature
4Al+3(O2+3.76N2)→2Al2O3+11.28N2(3)
Can obtain the product
q2＝mNCp,NΔTN＝303.557KJ/kg (4)
Wherein m isNMass of nitrogen in the air required for the combustion of the unit mass of aluminium, C p,NFor its specific heat, Δ TNFor nitrogen temperature rise, 100K is taken.
q2＝mmoCp,moΔT＝1.983MJ/kg (5)
Wherein m ismoMass of metal oxide produced per mass of aluminum burned, Cp,moAnd for specific heat, 1050J/(kg. K) is taken, delta T is melting and slag temperature rise, 1000K is taken, and the formula (2) is obtained: etah92.60%. Reference thermal power generation efficiency level, ηt＝42％，ηg99%, the thermal power generation efficiency η using metallic aluminum as fuelpg＝38.50％。
The electric energy cycle efficiency of the system is the ratio of the electric energy obtained by burning the aluminum to the electric energy consumed by smelting the aluminum if only the conversion and utilization of the electric energy are considered, namely:
31MJ*38.50％/56MJ＝21.31％
compared with transportable energy storage batteries (lithium batteries and the like), the energy storage technology based on metal fuel has the advantages of long service life, high energy density and the like, and has the main disadvantage of low electric energy circulation efficiency.
(III) Power Generation cost estimation
It is reported that the electricity abandonment of renewable energy in 2017 exceeds 1000 hundred million degrees, and the cost of the energy conversion system is mainly the cost for purchasing anode paste and transporting metals and oxides thereof, assuming that the electricity abandonment is taken as an energy source for electrolytic reduction of alumina. The price of the anode paste is 1400 yuan/ton, the transportation cost of the metallic aluminum and the oxidation of the metallic aluminum is 15.51 minutes/ton kilometer, and the transportation mileage refers to the route of 'Hami nan-Zheng +/-800 kV extra-high voltage direct current transmission engineering', and is 2210 kilometers per pass. Therefore, the theoretical cost of power generation of the system is about 0.5022 yuan/degree. If the inert electrode is adopted, the cost of anode paste can be saved, but the energy consumption for smelting aluminum can be increased, and if the electric energy is from surplus renewable energy sources, the theoretical cost of the system for generating electricity is only the cost for transporting metals and oxides thereof, which is about 0.2787 yuan per degree and is equivalent to the cost of generating electricity by burning coal, and if the environmental cost generated by discharging greenhouse gases is considered, the scheme is superior to the cost of generating electricity by burning coal.
Since electrolytic aluminum and thermal power generation are both mature technologies in the industry, for the invention, based on the existing technical foundation, the large-scale development is realized, and the energy conversion process of the invention can be realized only by powdering the metal aluminum and supplying the powder as fuel to the boiler of the thermal power plant for combustion, as shown in fig. 7, the feasibility is strong, and the invention has the foundation of rapid popularization and application. The difference lies in that in the tail gas discharge stage of the thermal power plant, an additional gas-solid separator is needed to recover the metal oxide particles, and then the recovered metal oxide particles are subjected to metal electrolysis reduction to form metal, and are recycled.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.

Claims (9)

1. A zero-carbon-emission energy conversion system based on metal fuel, characterized in that: the device comprises a metal particle supply device, an air source, a metal combustion system, a metal electrolysis reduction system and a heat engine, wherein the metal particle supply device conveys metal fuel particles to the metal combustion system to be combusted with an oxidant conveyed by the air source to generate an oxidation reaction, heat generated by the oxidation reaction is converted into secondary energy through the heat engine, a metal solid oxide generated in the oxidation reaction is conveyed to the metal electrolysis reduction system to perform a reduction reaction, and metal generated after the reduction reaction is taken as metal fuel and conveyed to the metal combustion system again through the metal particle supply device.
2. The metal-fuel based zero-carbon-emissions energy conversion system of claim 1, wherein: the metal combustion system comprises a combustion chamber, a heat exchanger, a gas-solid separator and a metal oxide collector, metal fuel particles are conveyed into the combustion chamber through a metal particle supply device and are combusted with an oxidant provided by a gas source to generate an oxidation reaction, waste gas generated by combustion is recovered by the waste heat in the waste gas through the heat exchanger, and after the temperature of the waste gas is reduced, the metal solid oxide in the waste gas is collected into the metal oxide collector through the gas-solid separator.
3. The metal-fuel based zero-carbon-emissions energy conversion system of claim 2, wherein: the metal particle supply device comprises positive and negative electrode plates which are opposite and vertical, the positive and negative electrode plates are respectively connected with the positive and negative electrodes of a direct current power supply, an insulating material is surrounded on the peripheries of the positive and negative electrode plates which are opposite and vertical, a sealed cavity is formed between the insulating material and the positive and negative electrode plates which are opposite and vertical, a through hole is formed in the negative electrode plate, a powder conveying pipe connected with a combustion chamber is inserted into the through hole, air is introduced into the sealed cavity as fluidizing gas, and the fluidizing gas is mixed with metal fuel particles dispersed by an electric field and then is conveyed into the combustion chamber through the powder conveying pipe.
4. The metal-fuel based zero-carbon-emissions energy conversion system of claim 3, wherein: the particle size of the metal fuel particles is 5-10 microns.
5. The metal-fuel based zero-carbon-emissions energy conversion system of claim 3, wherein: the powder conveying pipe is made of ceramic materials.
6. The metal-fuel based zero-carbon-emissions energy conversion system of claim 1, wherein: the oxidant is air or a mixture of air and oxygen.
7. A metal fuel based zero carbon emission energy conversion system according to any one of claims 1 to 6, characterized in that: the metal fuel particles are aluminum and iron.
8. A metal fuel based zero carbon emission energy conversion system according to any one of claims 1 to 6, characterized in that: the metal electrolysis reduction system uses a renewable energy power generation system for power supply.
9. The metal-fuel based zero-carbon-emissions energy conversion system of claim 8, wherein: the secondary energy is electric energy or mechanical energy.
CN201910786342.3A 2019-08-23 2019-08-23 Zero-carbon-emission energy conversion system based on metal fuel Pending CN111853762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910786342.3A CN111853762A (en) 2019-08-23 2019-08-23 Zero-carbon-emission energy conversion system based on metal fuel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910786342.3A CN111853762A (en) 2019-08-23 2019-08-23 Zero-carbon-emission energy conversion system based on metal fuel

Publications (1)

Publication Number Publication Date
CN111853762A true CN111853762A (en) 2020-10-30

Family

ID=72970626

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910786342.3A Pending CN111853762A (en) 2019-08-23 2019-08-23 Zero-carbon-emission energy conversion system based on metal fuel

Country Status (1)

Country Link
CN (1) CN111853762A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113092659A (en) * 2021-03-30 2021-07-09 中国人民解放军国防科技大学 High-temperature and high-pressure environment metal powder ignition combustion test device capable of working stably

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113092659A (en) * 2021-03-30 2021-07-09 中国人民解放军国防科技大学 High-temperature and high-pressure environment metal powder ignition combustion test device capable of working stably

Similar Documents

Publication Publication Date Title
CN1683472A (en) Method for complex optimum using oil shale
Buscheck Hybrid-energy technology enabled by heat storage and oxy-combustion for power and industrial-heat applications with near-zero or negative CO2 emissions
CN204333127U (en) Packaged type solid oxide fuel cell power generating system
JP6411430B2 (en) Energy saving system for integrated combustion equipment
CN113028376A (en) Ammonia chemical looping combustion power generation system and method
CN111853762A (en) Zero-carbon-emission energy conversion system based on metal fuel
CN108428919B (en) Hybrid power generation system and method based on direct carbon fuel cell
CN210861065U (en) Zero-carbon-emission energy conversion system based on metal fuel
Karpenko et al. Using plasma-fuel systems at Eurasian coal-fired thermal power stations
WO2014030368A1 (en) Method for utilizing aluminum as fuel
CN114658536B (en) Carbon chemical energy storage system
TWI600825B (en) Emission-free devices and methods for performing mechanical work and producing electric and thermal energy
CN210765158U (en) Thermal power plant and high-temperature coal coking furnace coupling system
Chen et al. An available method utilizing the waste heat in a direct carbon fuel cell
CN112282878A (en) Power generation system using magnesium as fuel and working method thereof
Komori et al. CO2 emission reduction method through various gas turbine fuels applications
CN205779066U (en) A kind of combined cycle power plant utilizing tail of semi coke to generate electricity
CN104393317A (en) Moveable solid oxide fuel cell electricity generation system
McConohy Aluminum Combustion Thermophotovoltaic for High Energy Density, Long Duration Power Applications
NL2027780B1 (en) Electricity generation
CN214745627U (en) Chemical looping combustion power generation system of ammonia
CN219640720U (en) Silicomanganese ore furnace tail gas cascade utilization system
CN101508926A (en) Circulation combustion power generation technology of aluminum, iron oxide fuel
CN219603617U (en) Hydrogen rapid electric heating device and pure hydrogen shaft furnace reduction system
CN107267251A (en) A kind of boiler dirt-resistant additive and its preparation and application

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination