Semi-coke disposal system and method coupled with aluminum fuel energy storage for stable combustion of coal-fired units

Abstract

The present disclosure provides a semi-coke disposal system and method for stable combustion coupling of coal-fired units and aluminum fuel energy storage. In the system, an Al2O3 electrolyzer is powered by a renewable energy power generation device. The anode outlet of the Al2O3 electrolyzer is connected to the inlet of a condenser. The inlet and outlet of a first gas mixer are respectively connected to the first outlet of the condenser and the inlet of an oxygen-enriched air storage tank. The inlet and outlet of a coal mill are respectively connected to the first outlet of the oxygen-enriched air storage tank and the inlet of a semi-gasification combustor. The outlet of the semi-gasification combustor is connected to the outlet of a semi-coke combustor. The semi-coke fuel is crushed by the coal mill and sent into the semi-gasification combustor for stable combustion with oxygen-enriched air in the oxygen-enriched air storage tank as the gasification background gas. The system combines coal-fired power plants, new energy power generation, coal-based solid waste utilization, and ecological restoration, improves the utilization rate of coal-based solid waste, expands its application field, builds a multi-element coupled energy system, and reduces carbon emissions.

Description

Technical Field

[0001] This disclosure pertains to the field of coal-fired power generation technology, specifically relating to a semi-coke disposal system and method for stable combustion coupled with aluminum fuel energy storage in coal-fired units. Background Technology

[0002] With the increasing proportion of renewable energy generation, coal-fired power units are facing increasingly frequent peak-shaving demands. However, coal-fired power units generally suffer from unstable combustion, decreased efficiency, and increased pollutant emissions when operating at low loads. To address these issues, various solutions have been proposed in existing technologies, such as:

[0003] Oxygen-enriched combustion technology increases the oxygen concentration at the burner outlet and enhances combustion stability, but it also has problems such as high oxygen production costs and system complexity.

[0004] Plasma ignition technology: It uses high-temperature plasma to ignite pulverized coal, improving combustion stability under low load, but it has problems such as large equipment investment and high operation and maintenance costs.

[0005] Biomass co-firing technology: This technology mixes biomass with pulverized coal for combustion, which improves combustion efficiency, but it also has problems such as limited biomass resources and high fuel pretreatment costs.

[0006] On the other hand, aluminum fuel, as a new type of fuel with high energy density and clean, pollution-free characteristics, has received widespread attention in recent years. The main product of aluminum fuel combustion is alumina, which can be recycled and reused, thus achieving a circular economy.

[0007] In addition, the development of my country's coal chemical industry will generate a large amount of semi-coke. Lump semi-coke can be reused as a chemical product, while powdered semi-coke is a typical coal-based solid waste fuel. The traditional treatment method is to landfill semi-coke as waste, which not only wastes resources but also pollutes the environment.

[0008] To address the aforementioned issues, it is necessary to propose a reasonably designed and effective semi-coke disposal system and method for stable combustion of coal-fired power units coupled with aluminum fuel energy storage. Summary of the Invention

[0009] The present disclosure aims to at least solve one of the technical problems existing in the prior art, and provides a semi-coke disposal system and method for stable combustion coupled with aluminum fuel energy storage in coal-fired power units.

[0010] This disclosure provides a semi-coke disposal system for a coal-fired power unit with stable combustion coupled with aluminum fuel energy storage, including a boiler, an Al2O3 electrolyzer, a condenser, a first gas mixer, an oxygen-enriched air storage tank, a coal mill, and a semi-gasification burner; wherein the boiler is equipped with a semi-gasification burner nozzle, an H2 combustion nozzle, a semi-coke burner nozzle, and a burnout air nozzle.

[0011] The Al2O3 electrolyzer is powered by a renewable energy power generation device. The anode outlet of the Al2O3 electrolyzer is connected to the inlet of the condenser to transport the water vapor O2 generated by electrolysis to the condenser.

[0012] The inlet and outlet of the first gas mixer are connected to the first outlet of the condenser and the inlet of the oxygen-enriched air storage tank, respectively, so as to extract dry O2 in the condenser and mix it with air to form oxygen-enriched air, which is then transported to the oxygen-enriched air storage tank for storage.

[0013] The inlet and outlet of the coal mill are respectively connected to the first outlet of the oxygen-enriched air storage tank and the inlet of the semi-gasification burner, and the outlet of the semi-gasification burner is connected to the nozzle of the semi-coke burner; wherein...

[0014] After being crushed by the coal mill, the semi-coke fuel is fed into the semi-gasification burner as background gas by the oxygen-enriched air in the oxygen-enriched air storage tank for stable combustion.

[0015] Optionally, the second outlet of the oxygen-enriched air storage tank is connected to the burnout air nozzle to deliver the oxygen-enriched air in the oxygen-enriched air storage tank as oxygen-enriched burnout air into the boiler burnout zone.

[0016] Optionally, the system further includes a condensate reservoir, the inlet of which is connected to the second outlet of the condenser, for collecting condensate after the condensation of water vapor O2 as makeup water for the boiler.

[0017] Optionally, the system further includes an Al-H2O reactor, an H2-H2O separator, an aluminum powder storage tank, and a second gas mixer;

[0018] The inlet and outlet of the aluminum powder storage tank are connected to the cathode outlet of the Al2O3 electrolyzer and the inlet of the Al-H2O reactor, respectively; the first outlet of the Al-H2O reactor is connected to the inlet of the H2-H2O separator; wherein...

[0019] The aluminum powder in the Al-H2O reactor reacts chemically with part of the steam extracted from the steam turbine to form a mixed gas, which is then transported to the H2-H2O separator for separation.

[0020] The first inlet and the second inlet of the second gas mixer are respectively connected to the first outlet of the oxygen-enriched air storage tank and the water vapor outlet of the H2-H2O separator, and the outlet of the second gas mixer is connected to the inlet of the coal mill.

[0021] The second gas mixer is used to mix the extracted oxygen-enriched air with water vapor to obtain a vaporized background gas.

[0022] Optionally, the hydrogen outlet of the H2-H2O separator is connected to the H2 combustion nozzle of the boiler to send H2 as a combustion-supporting fuel into the furnace of the boiler for combustion.

[0023] Optionally, the second outlet of the Al-H2O reactor is connected to the inlet of the Al2O3 electrolyzer to transport the Al2O3 generated in the Al-H2O reactor to the Al2O3 electrolyzer for electrolysis.

[0024] Optionally, an Al2O3 storage device may also be included;

[0025] The Al2O3 storage device is connected between the Al-H2O reactor and the Al2O3 electrolyzer.

[0026] Optionally, the system also includes an aluminum particle storage device;

[0027] The aluminum particle storage device is connected between the cathode of the Al2O3 electrolyzer and the aluminum powder storage device.

[0028] Optionally, the H2 combustion nozzle and the semi-gasification burner nozzle are sequentially disposed below the semi-coke burner nozzle.

[0029] Another aspect of this disclosure provides a method for handling semi-coke in a coal-fired power unit with stable combustion coupled with aluminum fuel energy storage, using the semi-coke handling system for a coal-fired power unit with stable combustion coupled with aluminum fuel energy storage described above.

[0030] This disclosure discloses a semi-coke disposal system and method for stable combustion coupled with aluminum fuel energy storage in coal-fired power units. The system utilizes redundant electricity from a renewable energy power generation unit to power an Al2O3 electrolyzer. The oxygen generated during electrolysis is mixed with air to form oxygen-enriched air. This oxygen-enriched air, combined with semi-coke fuel, enables semi-gasification and stable combustion of the semi-coke fuel in a semi-gasification burner. By combining redundant electricity from the renewable energy power generation unit with thermal power generation, the carbon emissions of the power system are significantly reduced. This system integrates coal-fired power plants, new energy power generation, coal-based solid waste utilization, and ecological restoration, not only improving the utilization rate of coal-based solid waste and expanding its application areas, but also constructing a multi-coupled energy system that reduces the system's carbon emissions. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a semi-coke disposal system for stable combustion coupled with aluminum fuel energy storage in a coal-fired unit, as described in one embodiment of this disclosure. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0033] like Figure 1 As shown, one aspect of this disclosure provides a semi-coke disposal system for a coal-fired unit with stable combustion coupled with aluminum fuel energy storage, including a boiler 1, an Al2O3 electrolyzer 2, a condenser 3, a first gas mixer 4, an oxygen-enriched air storage tank 5, a coal mill 6, and a semi-gasification burner 7. The boiler 1 is equipped with a semi-gasification burner nozzle 8, an H2 combustion nozzle 9, a semi-coke burner nozzle 10, and a burnout air nozzle 11.

[0034] Al2O3 electrolyzer 2 is powered by a renewable energy power generation device. The anode outlet of Al2O3 electrolyzer 2 is connected to the inlet of condenser 3 to transport the water vapor O2 generated during electrolysis to condenser 3. The renewable energy power generation device can be a wind power generation device or a photovoltaic power generation device, which uses the redundant electricity generated by wind power and photovoltaic power generation to power Al2O3 electrolyzer 2, thereby reducing the carbon emissions of the power system.

[0035] The inlet and outlet of the first gas mixer 4 are connected to the first outlet of the condenser 3 and the inlet of the oxygen-enriched air storage tank 5, respectively, so as to extract dry O2 in the condenser 3 and mix it with air to form oxygen-enriched air, which is then transported to the oxygen-enriched air storage tank 5 for storage.

[0036] The inlet and outlet of the coal mill 6 are connected to the first outlet of the oxygen-enriched air storage tank 5 and the inlet of the semi-gasification burner 7, respectively. The outlet of the semi-gasification burner 7 is connected to the nozzle 10 of the semi-coke burner.

[0037] In this process, the semi-coke fuel is crushed by the coal mill 6 and then fed into the semi-gasification burner 7 by the oxygen-enriched air in the oxygen-enriched air storage tank 5 as the gasification background gas for stable combustion.

[0038] Specifically, the redundant electricity generated by wind and photovoltaic power generation supplies power to the Al2O3 electrolyzer 2. At the anode of this electrolyzer, water vapor O2 is generated. This water vapor O2 enters the condenser 3 and is condensed to obtain dry O2. The dry O2 enters the first gas mixer 4 and is mixed with air to prepare oxygen-enriched air. The obtained oxygen-enriched air is then transported to the oxygen-enriched air storage tank 5 for collection and storage. Semi-coke fuel is crushed by the coal mill 6, and the oxygen-enriched air in the oxygen-enriched air storage tank 5 is used as the gasification background gas and fed into the semi-gasification burner 7 for steady combustion.

[0039] This disclosure discloses a semi-coke disposal system for coal-fired power units with coupled aluminum fuel energy storage and stable combustion. It utilizes redundant electricity from a renewable energy power generation unit to power an Al2O3 electrolyzer. The oxygen generated during electrolysis is mixed with air to form oxygen-enriched air. This oxygen-enriched air, combined with semi-coke fuel, enables stable semi-gasification combustion of the semi-coke fuel in a semi-gasification burner. By combining redundant electricity from the renewable energy power generation unit with thermal power generation, the system significantly reduces carbon emissions from the power system. This system integrates coal-fired power plants, new energy power generation, coal-based solid waste utilization, and ecological restoration. It not only improves the utilization rate of coal-based solid waste and expands its application areas but also constructs a multi-coupled energy system, reducing the system's carbon emissions.

[0040] For example, such as Figure 1 As shown, the second outlet of the oxygen-enriched air storage tank 5 is connected to the burnout air nozzle 11 so that the oxygen-enriched air in the oxygen-enriched air storage tank 5 is sent into the burnout zone of the boiler as oxygen-enriched burnout air.

[0041] Specifically, the oxygen-enriched air in the oxygen-enriched air storage tank 5 is divided into two streams. One stream is introduced into the coal mill 6 as the gasification background gas for semi-coke fuel, and the other stream is sent to the boiler combustion zone through the burnout air nozzle 11 as oxygen-enriched burnout air. The oxygen-enriched air can burn within the boiler combustion zone, improving boiler combustion efficiency and reducing NO₂ levels. x emission.

[0042] For example, such as Figure 1 As shown, the system also includes a condensate storage tank. The inlet of the condensate storage tank is connected to the second outlet of the condenser 3, and is used to collect the condensate after the water vapor O2 is condensed to serve as boiler feedwater.

[0043] Specifically, the water vapor in the water-containing steam O2 generated by the Al2O3 electrolyzer 2 is condensed by the condenser 3 to form condensate. The condensate has high purity and can be collected by the condensate storage tank and used as boiler feedwater, thus saving energy.

[0044] For example, such as Figure 1 As shown, the system also includes an Al-H2O reactor 12, an H2-H2O separator 13, an aluminum powder storage tank 14, and a second gas mixer 15.

[0045] The inlet and outlet of the aluminum powder storage tank 14 are connected to the cathode outlet of the Al2O3 electrolyzer 2 and the inlet of the Al-H2O reactor 12, respectively. The first outlet of the Al-H2O reactor 12 is connected to the inlet of the H2-H2O separator 13.

[0046] In the Al-H2O reactor 12, aluminum powder reacts chemically with part of the steam extracted from the steam turbine to form a mixed gas, which is then transported to the H2-H2O separator 13 for separation.

[0047] The first inlet and the second inlet of the second gas mixer 15 are respectively connected to the first outlet of the oxygen-enriched air storage tank 5 and the water vapor outlet of the H2-H2O separator 13, and the outlet of the second gas mixer 15 is connected to the inlet of the coal mill 6.

[0048] The second gas mixer 15 is used to mix the extracted oxygen-enriched air with water vapor to obtain vaporized background gas.

[0049] Specifically, after electrolysis in Al2O3 electrolyzer 2, aluminum particles are generated at the cathode. After crushing and other processes, the aluminum particles are converted into aluminum powder and stored in aluminum powder storage tank 14. The aluminum powder in aluminum powder storage tank 14 enters Al-H2O reactor 12 and reacts chemically with part of the turbine extraction steam to form a hydrogen mixture. Using the turbine extraction steam as the working fluid in Al-H2O reactor 12 can improve the reaction efficiency.

[0050] The hydrogen-rich gas mixture enters the H2-H2O separator 13 and is separated into H2 and water vapor. The oxygen-rich air in the oxygen-rich air storage tank 5 and the water vapor generated by the H2-H2O separator 13 both enter the second gas mixer 15 for mixing to obtain the gasification background gas for semi-coke fuel.

[0051] When the unit is running at low load, the semi-coke fuel is crushed by the coal mill 6 and then fed into the semi-gasification burner 7 as the gasification background gas through the mixture of water vapor and oxygen-enriched air in the second gas mixer 15. This improves the stable combustion performance of the semi-gasification burner 7 and further enhances the unit's stable combustion capability at low load.

[0052] In this embodiment, the aluminum fuel energy storage system is combined with the coal-fired unit to achieve efficient and clean disposal of low-volatile fuel semi-coke and stable combustion of the unit under low load, which greatly reduces the use of high-quality coal resources.

[0053] For example, such as Figure 1 As shown, the hydrogen outlet of the H2-H2O separator 13 is connected to the H2 combustion nozzle 9 of the boiler 1 to send H2 as a combustion-supporting fuel into the furnace of the boiler 1 for combustion.

[0054] Specifically, the H2-H2O separator 13 separates the high-temperature H2 from the hydrogen mixture and sends it to the furnace of boiler 1 for combustion through the H2 combustion nozzle 9. Using turbine-extracted steam as the working fluid in the Al-H2O reactor can improve reaction efficiency and generate high-temperature H2. Furthermore, the H2 can be fed into the furnace for combustion under low-load conditions, improving the unit's low-load stable combustion capability.

[0055] For example, such as Figure 1As shown, the second outlet of the Al-H2O reactor 12 is connected to the inlet of the Al2O3 electrolyzer 2 to transport the Al2O3 generated in the Al-H2O reactor 12 to the Al2O3 electrolyzer 2 for electrolysis.

[0056] Specifically, the aluminum powder in the aluminum powder storage tank 14 enters the Al-H2O reactor 12 and reacts chemically with part of the steam extracted from the steam turbine to generate Al2O3. The Al2O3 formed is transported to the Al2O3 electrolyzer 2 to participate in the electrolysis process again, realizing the recycling of Al2O3 and saving resources.

[0057] For example, such as Figure 1 As shown, the system also includes an Al2O3 storage tank 16, which is connected between the Al-H2O reactor 12 and the Al2O3 electrolyzer 2. Specifically, the Al2O3 produced in the Al-H2O reactor 12 can be transported to the Al2O3 storage tank 16 for collection and storage. When the Al2O3 electrolyzer 2 is electrolyzing, the Al2O3 stored in the Al2O3 storage tank 16 can be transported to the Al2O3 electrolyzer 2.

[0058] For example, such as Figure 1 As shown, the system also includes an aluminum particle storage device 17, which is connected between the cathode of the Al2O3 electrolyzer 2 and the aluminum powder storage device 14.

[0059] Specifically, the aluminum particles generated at the cathode during electrolysis in Al2O3 electrolyzer 2 can be transported to aluminum particle storage tank 17 for collection and storage. The aluminum particles in aluminum particle storage tank 17 are then processed into aluminum powder through processes such as crushing.

[0060] For example, such as Figure 1 As shown, the H2 combustion nozzle 9 and the semi-gasification burner nozzle 10 are sequentially arranged below the semi-coke burner nozzle 8. Utilizing the heat generated by H2 combustion and the semi-gasification burner to assist in the combustion of semi-coke can improve the unit's stable combustion performance under full load.

[0061] For example, such as Figure 1 As shown, the system also includes a dust collector 18, an induced draft fan 19, and a chimney 20 connected in sequence; wherein, the inlet of the dust collector 18 is connected to the boiler 1, and the flue gas generated by the combustion of the boiler 1 can be dusted in the dust collector 18 and then discharged through the induced draft fan 19 and the chimney 20.

[0062] Another aspect of this disclosure provides a method for handling semi-coke in a coal-fired power unit with stable combustion coupled with aluminum fuel energy storage. The method employs the semi-coke handling system for a coal-fired power unit with stable combustion coupled with aluminum fuel energy storage described above. The structure of this system has been described in detail above and will not be repeated here.

[0063] The operation method of the semi-coke disposal system of the coal-fired unit with stable combustion coupled with aluminum fuel energy storage in this embodiment of the present disclosure is as follows:

[0064] 1) The redundant power generation from wind power and photovoltaic power generation is used to provide power to Al2O3 electrolyzer 2 to prepare aluminum particles and water vapor O2.

[0065] 2) After the aluminum particles are crushed, they are obtained as aluminum powder and stored in aluminum powder storage tank 14. The water vapor O2 is dried in condenser 3 and then mixed with air in first gas mixer 4 to obtain oxygen-enriched air, which is then stored in oxygen-enriched air storage tank 5.

[0066] 3) The oxygen-enriched air and the H2O(g) separated in the H2-H2O separator 13 are mixed in the second gas mixer 15 to prepare the gasification background gas. When there is no H2O(g), the oxygen-enriched air is used alone as the gasification background gas.

[0067] 4) Part of the steam extracted from the turbine reacts chemically with aluminum powder in the Al-H2O reactor 12. The resulting Al2O3 is collected and re-enters the Al2O3 electrolyzer 2 for electrolysis, while the mixture of H2 and H2O(g) is passed into the H2O reactor 2. 2- H2O separator 13.

[0068] 5) After being crushed by the coal mill 6, the semi-coke fuel is fed into the semi-gasification burner 7 by the gasification background gas in the second gas mixer 15 for stable combustion.

[0069] 6) Part of the oxygen-enriched air in the oxygen-enriched air storage tank 5 is sent into the furnace through the burnout air nozzle 11 as oxygen-enriched burnout air.

[0070] 7) The flue gas generated by the combustion of boiler 1 can be removed by dust collector 18 and then discharged through induced draft fan 19 and chimney 20.

[0071] This disclosure discloses a semi-coke disposal system and method for coal-fired power units with coupled aluminum fuel energy storage. This system combines a metallic aluminum fuel energy storage system with a coal-fired power unit, achieving efficient and clean disposal of low-volatile semi-coke and stable combustion under low loads, significantly reducing the use of high-quality coal resources. Furthermore, this system integrates coal-fired power plants, new energy power generation, coal-based solid waste utilization, and ecological restoration, not only improving the utilization rate of coal-based solid waste and expanding its application areas, but also constructing a multi-coupled energy system and reducing its carbon emissions.

[0072] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the embodiments of this disclosure, and the embodiments of this disclosure are not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the embodiments of this disclosure, and these modifications and improvements are also considered to be within the protection scope of the embodiments of this disclosure.

Claims

1. A semi-coke disposal system for stable combustion coupled with aluminum fuel energy storage in a coal-fired power unit, characterized in that, The system includes a boiler, an Al2O3 electrolyzer, a condenser, a first gas mixer, an oxygen-enriched air storage tank, a coal mill, and a semi-gasification burner; wherein the boiler is equipped with a semi-gasification burner nozzle, an H2 combustion nozzle, a semi-coke burner nozzle, and a burnout air nozzle. The Al2O3 electrolyzer is powered by a renewable energy power generation device. The anode outlet of the Al2O3 electrolyzer is connected to the inlet of the condenser to transport the water vapor O2 generated by electrolysis to the condenser. The inlet and outlet of the first gas mixer are connected to the first outlet of the condenser and the inlet of the oxygen-enriched air storage tank, respectively, so as to extract dry O2 in the condenser and mix it with air to form oxygen-enriched air, which is then transported to the oxygen-enriched air storage tank for storage. The inlet and outlet of the coal mill are respectively connected to the first outlet of the oxygen-enriched air storage tank and the inlet of the semi-gasification burner, and the outlet of the semi-gasification burner is connected to the nozzle of the semi-coke burner; wherein... After being crushed by the coal mill, the semi-coke fuel is fed into the semi-gasification burner as background gas by the oxygen-enriched air in the oxygen-enriched air storage tank for stable combustion. The system also includes an Al-H2O reactor, an H2-H2O separator, an aluminum powder storage tank, and a second gas mixer; The inlet and outlet of the aluminum powder storage tank are connected to the cathode outlet of the Al2O3 electrolyzer and the inlet of the Al-H2O reactor, respectively; the first outlet of the Al-H2O reactor is connected to the inlet of the H2-H2O separator; wherein... The aluminum powder in the Al-H2O reactor reacts chemically with part of the steam extracted from the steam turbine to form a mixed gas, which is then transported to the H2-H2O separator for separation. The first inlet and the second inlet of the second gas mixer are respectively connected to the first outlet of the oxygen-enriched air storage tank and the water vapor outlet of the H2-H2O separator, and the outlet of the second gas mixer is connected to the inlet of the coal mill. The second gas mixer is used to mix the extracted oxygen-enriched air with water vapor to obtain gasification background gas; wherein, when the unit is running at low load, the semi-coke fuel is crushed by the coal mill and then the mixture of water vapor and oxygen-enriched air in the second gas mixer is sent to the semi-gasification burner as gasification background gas for stable combustion. The second outlet of the Al-H2O reactor is connected to the inlet of the Al2O3 electrolyzer to transport the Al2O3 generated in the Al-H2O reactor to the Al2O3 electrolyzer for electrolysis, thereby realizing the recycling of Al2O3 and saving resources. The H2 combustion nozzle and the semi-gasification burner nozzle are sequentially arranged below the semi-coke burner nozzle. The heat generated by H2 combustion and the semi-gasification burner helps to ignite the semi-coke, which can improve the unit's stable combustion performance under full load.

2. The system according to claim 1, characterized in that, The second outlet of the oxygen-enriched air storage tank is connected to the burnout air nozzle so that the oxygen-enriched air in the oxygen-enriched air storage tank is sent into the burnout zone of the boiler as oxygen-enriched burnout air.

3. The system according to claim 1, characterized in that, The system also includes a condensate reservoir, the inlet of which is connected to the second outlet of the condenser, for collecting condensate after the condensation of water vapor O2 as makeup water for the boiler.

4. The system according to claim 1, characterized in that, The hydrogen outlet of the H2-H2O separator is connected to the H2 combustion nozzle of the boiler to send H2 as a combustion-supporting fuel into the furnace of the boiler for combustion.

5. The system according to claim 4, characterized in that, It also includes an Al2O3 storage device; The Al2O3 storage device is connected between the Al-H2O reactor and the Al2O3 electrolyzer.

6. The system according to claim 1, characterized in that, The system also includes an aluminum particle storage device; The aluminum particle storage device is connected between the cathode of the Al2O3 electrolyzer and the aluminum powder storage device.

7. A method for handling semi-coke in a coal-fired power unit with coupled aluminum fuel energy storage for stable combustion, characterized in that, The semi-coke disposal system of coal-fired unit with stable combustion coupled with aluminum fuel energy storage as described in any one of claims 1 to 6.

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