Integrated intelligent energy-saving device and method for preparing coal ash carbon sequestration slurry

Abstract

The invention discloses an integrated intelligent energy-saving device and method for preparing coal ash carbon sequestration slurry, the device comprises a reaction kettle and a display arranged at the front end of the reaction kettle, the top end of the reaction kettle is provided with a CO2 gas inlet connector connected with a CO2 rectifier, and a pressure gauge connector is arranged at a position symmetrical to the CO2 gas inlet connector; the two connecting ports and the feeding pipeline connecting port are distributed in a triangular shape; four circulating diaphragm pumps are arranged on the periphery of the reaction kettle, diaphragms are connected with four circulating feeding connecting ports in the top end of the reaction kettle and the bottom end of the reaction kettle through pipelines, the four circulating feeding connecting ports are connected with four spraying system row pipes with different lengths in the reaction kettle, and spraying system nozzles are uniformly arranged at the bottoms of the row pipes; ultrasonic connectors connected with ultrasonic probes are respectively arranged on the cylinder walls in four directions of the reaction kettle, and a stirring system bearing is arranged at the central position in the reaction kettle. The method can be used for preparing the coal ash carbon sequestration slurry and testing the CO2 absorption capacity of the coal ash carbon sequestration slurry, so that theoretical guidance is provided for industrial popularization of real coal ash carbon sequestration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fly ash carbon sequestration, in particular to a fly ash carbon sequestration slurry preparation integrated intelligent energy-saving device and method. BACKGROUND

[0002] Fly ash is a large amount of industrial solid waste generated by coal-fired power plants. Its large-scale storage not only occupies land resources, but also poses environmental risks such as dust and leachate pollution. In recent years, the technology of using fly ash to mineralize and store CO2 has attracted widespread attention due to its dual environmental benefits of "waste treatment with waste". This technology mainly uses the carbonation reaction between the alkaline components such as calcium and magnesium in fly ash and CO2 to generate stable carbonates, thereby achieving long-term storage of CO2 and improving the stability of fly ash, which has certain fire prevention potential.

[0003] However, the existing fly ash carbon sequestration process still faces a series of technical bottlenecks. First, the active calcium components in fly ash are mostly wrapped in silicate or exist in the form of insoluble minerals, resulting in slow direct carbonation reaction rate and low carbon sequestration efficiency. For example, the carbon sequestration rate of the traditional gas-liquid phase separation process is only 3.18%, far from the theoretical potential. Second, the existing process generally relies on high-pressure reaction kettles, long-time stirring, and complex processes such as multi-stage pretreatment, which has the problems of large equipment footprint and high energy consumption, making it difficult to realize continuous and large-scale operation. In addition, fly ash slurry is prone to settling and caking during the reaction process, which limits the CO2 mass transfer and reaction interface, further restricting the overall carbon sequestration effect. Finally, the existing experimental devices are mostly operated in a dispersed mode, lacking integrated intelligent control from material transportation, mixing, reaction to circulation, and have low system integration, which seriously hinders the transformation of the technology from the laboratory to engineering application.

[0004] To solve the problems of the prior art, the fly ash carbon sequestration slurry preparation integrated intelligent energy-saving device and method disclosed by the present application has the following advantages: 1. High-efficiency carbon sequestration: By integrating multiple technical means such as ultrasonic crushing, slurry circulation spraying, and gas explosion mass transfer enhancement, the system can effectively destroy the wrapping layer on the surface of fly ash particles, expose the internal active components, significantly enhance the mass transfer efficiency and reaction rate of CO2 in the gas-liquid-solid three-phase system, and greatly improve the overall carbon sequestration performance.

[0005] 2. Energy saving: The system optimizes the combination of key process parameters to significantly reduce the energy consumption and operating cost per unit of processing capacity while ensuring sufficient reaction, achieving a balance between efficiency and energy saving.

[0006] 3. Intelligent and controllable: The device is equipped with multi-channel sensor detection units and an intelligent control system, which can realize the precise proportioning, automatic conveying and real-time monitoring and linkage control of materials such as fly ash, additives and CO2, greatly improving the convenience, repeatability and process stability of operation.

[0007] 4. Convenient integration: Adopting a modular integrated design, it organically integrates the storage, conveying, mixing, reaction, circulation and monitoring of materials into one system. The system has a compact structure and coordinated functions, which facilitates rapid on-site installation, commissioning and operation and maintenance management.

[0008] 5. Resource Synergy: The system design is compatible with industrial solid wastes such as calcium carbide slag as a supplementary calcium source, which not only effectively reduces raw material costs, but also realizes the synergistic resource utilization of various solid wastes, which meets the requirements of green circular economy and sustainable development. Summary of the Invention

[0009] The purpose of this invention is to provide an integrated intelligent energy-saving device and method for preparing fly ash carbon fixation slurry. This device can not only collect and recycle fly ash and carbide slag from thermal power plants to absorb CO2 gas generated by power generation, but also is very convenient to operate and has high accuracy and reliability in absorbing CO2 gas.

[0010] To achieve the above objectives, this invention provides an integrated intelligent energy-saving device and method for preparing fly ash carbonization slurry. The experimental method includes the following steps: S1. Industrial waste fly ash and carbide slag are stored in fly ash storage tank and carbide slag storage tank respectively. The two storage tanks are connected to a mixing device. Fly ash and carbide slag from the two storage tanks are introduced into the mixing device along with tap water for mixing. The mixed mixture is then introduced into a storage tank for later use. S2. Pre-start the circulating diaphragm pump near the storage tank to pump the fly ash and carbide slag mixture in the storage tank to the reactor. Observe the LCD display of the reactor. After the liquid level reaches the maximum limit, turn off the circulating diaphragm pump. S3. Simultaneously turn on four circulating diaphragm pumps to circulate the fly ash and carbide slag mixture between the circulating diaphragm pumps and the reactor for 10 minutes. Then turn on the bearing of the stirring system to fully stir the fly ash and carbide slag mixture inside the reactor and observe and record the readings of the pressure gauge and the reactor's LCD display (temperature, CO2 concentration, liquid level). S4. After the stirring system bearing has been running for 10 minutes, turn on the CO2 storage tank and CO2 rectifier to allow CO2 gas to enter the reactor at a stable pressure and come into contact with the fly ash and carbide slag mixture. At this time, record the pressure and CO2 concentration data on the reactor's LCD screen. Carbon fixation (CO2 absorption) begins. Simultaneously, turn on the ultrasonic probe to break up the solidified fly ash and carbide slag mixture and improve the carbon fixation effect. During the carbon fixation process, record the pressure gauge and reactor LCD screen readings every 2 minutes. S5. Once the CO2 concentration no longer changes, the carbon fixation device has basically completed the carbon fixation work. Record the final pressure gauge and LCD display readings of the reactor. At this time, close the CO2 storage cylinder and CO2 rectifier, and turn off the four circulating diaphragm pumps. Finally, open the exhaust valve at the top of the reactor to release the internal pressure of the reactor. S6. Repeat steps S1, S2, S3, S4, and S5. CO2 can be absorbed by utilizing the combustion waste from thermal power plants, namely fly ash and carbide slag, thereby reducing carbon emissions to the natural environment.

[0011] Preferably, the reactor used for carbon fixation of fly ash and carbide slag is connected to a CO2 rectifier, a circulating diaphragm pump, and an ultrasonic probe, respectively. A pressure gauge and an exhaust valve are provided at the top of the reactor, and a discharge valve is provided at the bottom of the reactor.

[0012] Preferably, the reactor has a CO2 inlet port at the top for connection to a CO2 rectifier, and a pressure gauge port symmetrically positioned therefor connection to a pressure gauge. The two ports are triangularly distributed with the feed pipeline port. Four circulating diaphragm pumps are located around the reactor. The diaphragms are connected to the four circulating feed ports at the top and bottom of the reactor via pipelines. At the same time, a feed pipeline port at the top of the reactor is connected to the circulating diaphragm pump near the storage tank via a feed delivery pipeline. The four circulating feed ports are connected to four spray system pipes of different lengths inside the reactor. Spray system nozzles are evenly arranged at the bottom of the pipes. Ultrasonic ports for connection to ultrasonic probes are located on the four sides of the reactor wall. A stirring system bearing is located at the center of the reactor interior, and stirring system blades are arranged in two layers at the bottom of the bearing.

[0013] Preferably, the CO2 inlet at the top of the reactor is connected to the CO2 rectifier via a pipeline, the CO2 rectifier is connected to two CO2 storage cylinders via a pipeline, and the storage tank is connected to the circulating diaphragm pump and stirring device near the storage tank via pipelines.

[0014] Preferably, one end of the mixing device is connected to the storage tank via a pipeline, while the other end has three ports. The left and right ports are connected to the fly ash storage tank and the carbide slag storage tank, respectively, and the middle port is used to supply clean water.

[0015] Therefore, the integrated intelligent energy-saving device and method for preparing fly ash carbonization slurry using the above-described structure has the following advantages: 1. High-efficiency carbon fixation: By integrating multiple technologies such as ultrasonic crushing, slurry circulation spraying and gas explosion mass transfer enhancement, the synergistic effect can effectively destroy the surface coating of fly ash particles, expose the internal active components, significantly enhance the mass transfer efficiency and reaction rate of CO2 in the gas-liquid-solid three-phase system, and thus greatly improve the overall carbon fixation performance.

[0016] 2. Energy saving and consumption reduction: By optimizing the combination of key process parameters, the system significantly reduces energy consumption and operating costs per unit of processing volume while ensuring that the reaction proceeds fully, thus achieving a balance between high efficiency and energy saving.

[0017] 3. Intelligent and controllable: The device is equipped with multi-channel sensor detection units and an intelligent control system, which can realize the precise proportioning, automatic conveying and real-time monitoring and linkage control of materials such as fly ash, additives and CO2, greatly improving the convenience, repeatability and process stability of operation.

[0018] 4. Convenient integration: Adopting a modular integrated design, it organically integrates the storage, conveying, mixing, reaction, circulation and monitoring of materials into one system. The system has a compact structure and coordinated functions, which facilitates rapid on-site installation, commissioning and operation and maintenance management.

[0019] 5. Resource Synergy: The system design is compatible with industrial solid wastes such as calcium carbide slag as a supplementary calcium source, which not only effectively reduces raw material costs, but also realizes the synergistic resource utilization of various solid wastes, which meets the requirements of green circular economy and sustainable development.

[0020] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the complete device structure of the integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 2 This is a schematic diagram of the reactor structure of an integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention; Figure 3 This is a top view of the internal structure of the reactor of the integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 4 This is a bottom view of the internal structure of the reactor of the integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 5 This is a schematic diagram of the CO2 storage cylinder structure of the integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 6 This is a schematic diagram of the CO2 rectifier structure of an integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 7 This is a schematic diagram of the storage tank structure of an integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 8 This is a schematic diagram of the structure of a fly ash (carbide slag) storage tank in an integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 9 This is a schematic diagram of the three-port structure of the stirring device of the integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 10 This is a schematic diagram of the single-port structure of the stirring device of the integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 11 This is a schematic diagram of the circulating diaphragm pump structure of an integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 12 This is a top view of the spray system pipe structure of the integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 13 This is a bottom view of the spray system pipe arrangement structure of the integrated intelligent energy-saving device and method for preparing fly ash carbon-fixing slurry according to the present invention. Figure 14 This is a schematic diagram of the ultrasonic probe structure of an integrated intelligent energy-saving device and method for preparing fly ash carbonization slurry according to the present invention. Figure Labels

[0022] 1. CO2 storage cylinder; 2. CO2 rectifier; 3. Top exhaust valve of the reactor; 4. Pressure gauge; 5. Feed delivery pipeline; 6. Reactor LCD display; 7. Ultrasonic connection port; 8. Fly ash storage tank; 9. Calcium carbide slag storage tank; 10. Stirring device; 11. Storage tank; 12. Reactor; 13. Circulating diaphragm pump; 14. Pipeline; 15. Circulating feed connection port; 16. Top exhaust valve connection port of the reactor; 17. CO2 inlet connection port; 18. Pressure gauge connection port; 19. Feed pipeline connection port; 20. Spray system pipe; 21. Stirring system bearing; 22. Stirring system fan blade; 23. Spray system nozzle; 24. Ultrasonic probe; 25. Bottom discharge valve of the reactor. Detailed Implementation

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. Example

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 11 , Figure 12 , Figure 13 , Figure 14 As shown, the reactor 12 used for carbon fixation of fly ash and carbide slag is connected to a CO2 rectifier 2, a circulating diaphragm pump 13, and an ultrasonic probe 24. A pressure gauge 4 and a top exhaust valve 3 are located at the top of the reactor 12, and a bottom discharge valve 25 is located at the bottom. A CO2 inlet 17 connected to the CO2 rectifier 2 is located at the top of the reactor, and a pressure gauge inlet 18 connected to the pressure gauge 4 is located symmetrically thereon. The two inlets and the feed pipe inlet 19 are arranged in a triangular pattern. Four circulating diaphragm pumps 13 are located around the reactor 12, and the circulating diaphragm pumps 13 are connected to the four circulating feed inlets at the top of the reactor 12. The reactor 12 is connected to the bottom of the reactor 12 via a pipe 14. At the same time, the top of the reactor 12 is provided with a feed pipe connection port 19, which is connected to the circulating diaphragm pump 13 near the storage tank via a feed conveying pipe 5. The four circulating feed connection ports 15 are connected to four spray system pipes 20 of different lengths inside the reactor 12. Spray system nozzles 23 are evenly arranged at the bottom of the pipes. The four sides of the reactor 12 are provided with ultrasonic connection ports 7 for connecting ultrasonic probes 24. The reactor 12 is provided with a stirring system bearing 21 at the center of the reactor. The bottom of the bearing is provided with two layers of stirring system blades 22. The reactor 12 is also provided with a reactor LCD display 6 on the outside.

[0026] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7As shown, the reactor is equipped with a reactor top exhaust valve connection port 6. The CO2 inlet connection port 17 at the top of the reactor 12 is connected to the CO2 rectifier 2 through a pipeline. The CO2 rectifier 2 is connected to two CO2 storage cylinders 1 through a pipeline 14. The storage tank 11 is connected to the circulating diaphragm pump 13 and the stirring device 10 near the storage tank 11 through a pipeline 14.

[0027] like Figure 1 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown, one end of the stirring device 10 is connected to the storage tank 11 via a pipe 14, while the other end has three ports. The left and right ports are connected to the fly ash storage tank 8 and the carbide slag storage tank 9, respectively, and the middle port is used to supply clean water. This invention proposes an integrated intelligent energy-saving device and method for preparing fly ash carbon fixation slurry, the steps of which include: S1. Industrial waste fly ash and carbide slag are stored in fly ash storage tank and carbide slag storage tank respectively. The two storage tanks are connected to a mixing device. Fly ash and carbide slag from the two storage tanks are introduced into the mixing device along with tap water for mixing. The mixed mixture is then introduced into a storage tank for later use. S2. Pre-start the circulating diaphragm pump near the storage tank to pump the fly ash and carbide slag mixture in the storage tank to the reactor. Observe the LCD display of the reactor. After the liquid level reaches the maximum limit, turn off the circulating diaphragm pump. S3. Simultaneously turn on four circulating diaphragm pumps to circulate the fly ash and carbide slag mixture between the circulating diaphragm pumps and the reactor for 10 minutes. Then turn on the bearing of the stirring system to fully stir the fly ash and carbide slag mixture inside the reactor and observe and record the readings of the pressure gauge and the reactor's LCD display (temperature, CO2 concentration, liquid level). S4. After the stirring system bearing has been running for 10 minutes, turn on the CO2 storage tank and CO2 rectifier to allow CO2 gas to enter the reactor at a stable pressure and come into contact with the fly ash and carbide slag mixture. At this time, record the pressure and CO2 concentration data on the reactor's LCD screen. Carbon fixation (CO2 absorption) begins. Simultaneously, turn on the ultrasonic probe to break up the solidified fly ash and carbide slag mixture and improve the carbon fixation effect. During the carbon fixation process, record the pressure gauge and reactor LCD screen readings every 2 minutes. S5. Once the CO2 concentration no longer changes, the carbon fixation device has basically completed the carbon fixation work. Record the final pressure gauge and LCD display readings of the reactor. At this time, close the CO2 storage cylinder and CO2 rectifier, and turn off the four circulating diaphragm pumps. Finally, open the exhaust valve at the top of the reactor to release the internal pressure of the reactor. S6. Repeat steps S1, S2, S3, S4, and S5. CO2 can be absorbed by utilizing the combustion waste from thermal power plants, namely fly ash and carbide slag, thereby reducing carbon emissions to the natural environment.

[0028] Therefore, the integrated intelligent energy-saving device and method for preparing fly ash carbonization slurry using the above-described structure has the following advantages: 1. High-efficiency carbon fixation: By integrating multiple technologies such as ultrasonic crushing, slurry circulation spraying and gas explosion mass transfer enhancement, the synergistic effect can effectively destroy the surface coating of fly ash particles, expose the internal active components, significantly enhance the mass transfer efficiency and reaction rate of CO2 in the gas-liquid-solid three-phase system, and thus greatly improve the overall carbon fixation performance.

[0029] 2. Energy saving and consumption reduction: By optimizing the combination of key process parameters, the system significantly reduces energy consumption and operating costs per unit of processing volume while ensuring that the reaction proceeds fully, thus achieving a balance between high efficiency and energy saving.

[0030] 3. Intelligent and controllable: The device is equipped with multi-channel sensor detection units and an intelligent control system, which can realize the precise proportioning, automatic conveying and real-time monitoring and linkage control of materials such as fly ash, additives and CO2, greatly improving the convenience, repeatability and process stability of operation.

[0031] 4. Convenient integration: Adopting a modular integrated design, it organically integrates the storage, conveying, mixing, reaction, circulation and monitoring of materials into one system. The system has a compact structure and coordinated functions, which facilitates rapid on-site installation, commissioning and operation and maintenance management.

[0032] 5. Resource Synergy: The system design is compatible with industrial solid wastes such as calcium carbide slag as a supplementary calcium source, which not only effectively reduces raw material costs, but also realizes the synergistic resource utilization of various solid wastes, which meets the requirements of green circular economy and sustainable development.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A fly ash carbon sequestration slurry preparation integrated intelligent energy-saving device and method, the method steps comprising: S1, industrial waste fly ash and carbide slag are respectively stored in fly ash storage tank and carbide slag storage tank, two storage tanks are connected with stirring device, fly ash and carbide slag from two storage tanks and tap water are introduced into stirring device for mixing and stirring, and the mixture after stirring is introduced into storage pool for standby; S2, the circulating diaphragm pump close to the storage pool is opened in advance, the fly ash and carbide slag mixture in the storage pool is pumped into the reaction kettle, the liquid crystal display of the reaction kettle is observed, the circulating diaphragm pump is closed after the liquid level is displayed to the maximum limit; S3, four circulating diaphragm pumps are opened at the same time, the fly ash and carbide slag mixture is circulated in the circulating diaphragm pump and the reaction kettle for 10 minutes, then the stirring system bearing is opened, the fly ash and carbide slag mixture in the reaction kettle is fully stirred, and the pressure gauge and the reaction kettle liquid crystal display readings (temperature, CO2 concentration, liquid level) are observed and recorded; S4, after the stirring system bearing runs for 10 minutes, the CO2 storage tank and the CO2 rectifier are opened, the CO2 gas enters the reaction kettle at a stable pressure to contact with the fly ash and carbide slag mixture, at this time, the pressure and CO2 concentration data in the reaction kettle liquid crystal display are recorded, carbon sequestration (CO2 absorption) starts, the ultrasonic probe is opened synchronously to break the consolidated fly ash and carbide slag mixture and improve the carbon sequestration effect, the pressure gauge and the reaction kettle liquid crystal display readings are recorded every 2 minutes during the carbon sequestration process; S5, when the CO2 concentration no longer changes, the carbon sequestration device basically completes the carbon sequestration work, the last pressure gauge and the reaction kettle liquid crystal display readings are recorded, at this time, the CO2 storage tank and the CO2 rectifier are closed, the four circulating diaphragm pumps are closed, and finally the exhaust valve at the top of the reaction kettle is opened to release the internal pressure of the reaction kettle; S6, repeat steps S1, S2, S3, S4 and S5, the fly ash and carbide slag waste from the thermal power plant can be used to absorb CO2, thereby reducing carbon emissions to the natural environment.

2. An integrated intelligent energy-saving device and method for preparing a fly ash carbon sequestration slurry, characterized in that: The reaction kettle for fly ash and carbide slag carbon sequestration is connected with the CO2 rectifier, the circulating diaphragm pump and the ultrasonic probe, a pressure gauge and an exhaust valve at the top of the reaction kettle are provided, and a bottom discharge valve is also provided at the bottom of the reaction kettle.

3. The integrated intelligent energy-saving device and method for preparing fly ash carbon sequestration slurry according to claim 2, characterized in that: A CO2 inlet port connected with the CO2 rectifier is provided at the top of the reaction kettle, a pressure gauge connection port is provided at the symmetrical position of the CO2 inlet port for connecting with the pressure gauge, the two connection ports and the inlet pipe connection port are triangularly distributed, four circulating diaphragm pumps are provided around the reaction kettle, the diaphragm is connected with the four circulating inlet connection ports at the top of the reaction kettle and the bottom through pipes, at the same time, an inlet pipe connection port is provided at the top of the reaction kettle and connected with the circulating diaphragm pump close to the storage pool through the inlet conveying pipe, the four circulating inlet connection ports are connected with four different length spray system discharge pipes inside the reaction kettle, the spray system nozzles are uniformly arranged at the bottom of the discharge pipes; ultrasonic connection ports for connecting with the ultrasonic probes are provided on the four direction cylinder walls of the reaction kettle, a stirring system bearing is provided at the center position inside the reaction kettle, and stirring system fan blades are arranged in two layers at the bottom of the bearing.

4. The integrated intelligent energy-saving device and method for preparing fly ash carbon sequestration slurry according to claim 2, characterized in that: The CO2 inlet connection port at the top end of the reaction kettle is connected with a CO2 rectifier through a pipeline, the CO2 rectifier is connected with two CO2 gas cylinders through a pipeline, and the storage tank is connected with a circulating diaphragm pump and a stirring device close to the storage tank through a pipeline.

5. The integrated intelligent energy-saving device and method for preparing fly ash carbon sequestration slurry according to claim 2, characterized in that: One end of the stirring device is connected with the storage tank through a pipeline, and the other end has three ports, two of which are connected with a fly ash storage tank and a carbide slag storage tank respectively, and the middle port is used for supplying clean water.

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