Curing device for carbon dioxide in flue gas and experimental device

Abstract

The invention relates to a device for curing carbon dioxide in flue gas and an experimental device. The experimental device comprises a water supply unit, an ammonia water unit, a mineral unit, a turbulent ball tower and a simulated flue gas supply unit, the mineral unit comprises a first slurry tank and a mineral liquid conveying pipeline, the tail end of the mineral liquid conveying pipeline is connected with a second slurry tank, and the second slurry tank is connected with the bottom of the turbulent ball tower; the ammonia water unit comprises an ammonia water conveying pipeline; the tail end of the ammonia water conveying pipeline is connected with a second slurry tank; the second slurry tank is connected with a mixed liquid conveying pipeline, the mixed liquid conveying pipeline is provided with a first liquid inlet pipeline and a second liquid inlet pipeline, and the first liquid inlet pipeline and the second liquid inlet pipeline are connected to a first inlet and a second inlet of the turbulent ball tower respectively; the liquid inlet temperature of the first inlet is lower than that of the second inlet; the simulated flue gas supply unit comprises an air pipeline, a carbon dioxide pipeline and a simulated flue gas pipeline. According to the experimental device, by optimizing the process, the carbon dioxide absorption rate is higher, and the device is small in overall size and low in cost.

Description

Technical Field

[0001] The invention relates to the technical field of carbon dioxide treatment emitted in industrial production, and in particular to a device and an experimental device for solidifying carbon dioxide in flue gas. Background Art

[0002] Cement kiln is an important equipment in the cement production process. The gases emitted during the production process mainly include: carbon dioxide, nitrogen oxides, sulfur dioxide, hydrogen, etc. These gases mainly come from fuel combustion and pyrolysis reactions of raw materials, among which carbon dioxide has the largest emission, accounting for about 60% of the total emissions. Other industries that use fossil fuels such as coal also produce CO2 gas. The capture and storage of CO2 gas has received widespread attention in the industry. Chemical absorption is a common method for separating and capturing CO2 in flue gas. The absorbent is mainly ammonia water, which then further reacts with some industrial waste residues to solidify carbon dioxide. In the actual treatment process, a certain amount of CO2 will escape when using a spray tower for treatment. If the CO2 absorption rate needs to be further improved, other carbon capture equipment needs to be configured, making the entire treatment system complex, large in footprint, and high in cost. Therefore, it is necessary to further optimize the treatment process, but the prior art also lacks a device for experimenting with the actual curing effect. Summary of the invention

[0003] The purpose of the present invention is to provide a carbon dioxide solidification experimental device in flue gas, so as to determine the optimal carbon dioxide solidification process through experiments; at the same time, to provide a carbon dioxide solidification device in flue gas with high CO2 absorption rate and relatively simple structure.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] The experimental device for solidification of carbon dioxide in flue gas includes a water supply unit, an ammonia water unit, a mineral unit, a turbulent ball tower and a simulated flue gas supply unit;

[0006] The mineral unit includes a first slurry tank and a mineral liquid delivery pipeline, the end of the mineral liquid delivery pipeline is connected to a second slurry tank, and the second slurry tank is connected to the bottom of the turbulent ball tower;

[0007] The ammonia water unit comprises an ammonia water tank and an ammonia water delivery pipeline, and the end of the ammonia water delivery pipeline is connected to the second slurry tank;

[0008] The water supply unit comprises a first water supply branch and a second water supply branch, which are used to supply water to the first slurry tank and the ammonia water tank respectively;

[0009] The top of the turbulent ball tower is provided with an air outlet, and the turbulent ball tower is provided with a first inlet and a second inlet in sequence below the air outlet, the second slurry tank is connected with a mixed liquid delivery pipeline, the mixed liquid delivery pipeline is provided with a first liquid inlet pipeline and a second liquid inlet pipeline, the first liquid inlet pipeline and the second liquid inlet pipeline are connected to the first inlet and the second inlet respectively, and the ends of the first liquid inlet pipeline and the second liquid inlet pipeline are provided with spray heads; the first liquid inlet pipeline passes through a cooling heat exchanger, so that the liquid inlet temperature of the first inlet is lower than the liquid inlet temperature of the second inlet;

[0010] The simulated smoke supply unit includes an air pipeline, a carbon dioxide pipeline and a simulated smoke pipeline. The ends of the air pipeline and the carbon dioxide pipeline are connected to the simulated smoke pipeline so that simulated smoke with a set proportion of carbon dioxide passes through the simulated smoke pipeline.

[0011] Furthermore, the first slurry tank is used for adding phosphogypsum.

[0012] Furthermore, the first slurry tank is connected to a first circulation pipeline, two ends of the first circulation pipeline are connected to the upper and lower sides of the first slurry tank, and the first circulation pipeline includes a first circulation pump.

[0013] Furthermore, the mixed liquor delivery pipeline includes a first mixed liquor delivery pipeline, a second mixed liquor delivery pipeline and a reflux pipeline, one end of the first mixed liquor delivery pipeline is connected to the bottom of the second slurry tank, the other end of the first mixed liquor delivery pipeline is connected to the inlet of the hydrocyclone separator, one end of the second mixed liquor delivery pipeline is connected to the discharge port of the hydrocyclone separator, and the reflux port at the bottom of the hydrocyclone separator is connected to the second slurry tank through the reflux pipeline.

[0014] Furthermore, the first mixed liquid delivery pipeline passes through a temperature-raising heat exchanger, so that the temperature of the mixed liquid in the first mixed liquid delivery pipeline reaches 55-65°C.

[0015] Furthermore, the temperature of the first liquid inlet pipeline reaches 15-25° C. after passing through the cooling heat exchanger.

[0016] Furthermore, the first mixed liquid delivery pipeline is connected to a discharge pipeline via a three-way joint, and the first mixed liquid delivery pipeline is provided with an electric valve, which is used to switch the delivery direction of the mixed liquid; the discharge pipeline includes a discharge pump, and the discharge pipeline transports the mixed liquid after the reaction is completed to the washing filter.

[0017] Furthermore, the air pipeline includes an air intake filter and a booster fan.

[0018] Furthermore, a first carbon dioxide detector for detecting the initial carbon dioxide concentration is provided on the simulated flue gas pipeline, and the gas outlet at the top of the turbulent ball tower is connected to an exhaust pipe, on which a second carbon dioxide detector is provided.

[0019] A device for solidifying carbon dioxide in flue gas, including a water supply unit, an ammonia water unit, a mineral unit, a turbulent ball tower and a flue gas supply unit;

[0020] The mineral unit includes a first slurry tank and a mineral liquid delivery pipeline, the end of the mineral liquid delivery pipeline is connected to a second slurry tank, and the second slurry tank is connected to the bottom of the turbulent ball tower;

[0021] The ammonia water unit comprises an ammonia water tank and an ammonia water delivery pipeline, and the end of the ammonia water delivery pipeline is connected to the second slurry tank;

[0022] The water supply unit comprises a first water supply branch and a second water supply branch, which are used to supply water to the first slurry tank and the ammonia water tank respectively;

[0023] The top of the turbulent ball tower is provided with an air outlet, and the turbulent ball tower is provided with a first inlet and a second inlet in sequence below the air outlet, the second slurry tank is connected with a mixed liquid delivery pipeline, the mixed liquid delivery pipeline is provided with a first liquid inlet pipeline and a second liquid inlet pipeline, the first liquid inlet pipeline and the second liquid inlet pipeline are connected to the first inlet and the second inlet respectively, and the ends of the first liquid inlet pipeline and the second liquid inlet pipeline are provided with spray heads; the first liquid inlet pipeline passes through a cooling heat exchanger, so that the liquid inlet temperature of the first inlet is lower than the liquid inlet temperature of the second inlet;

[0024] The flue gas supply unit comprises a flue gas pipeline for receiving the flue gas to be treated.

[0025] Beneficial effects of the present invention:

[0026] A certain concentration of ammonia water and phosphogypsum liquid (or other industrial mineral waste) are mixed in the second slurry tank and then pumped into the turbulent ball tower to react chemically with the simulated flue gas (containing a certain proportion of carbon dioxide) entering the turbulent ball tower and be carbonated to achieve carbon capture and solidification and resource utilization of industrial waste. When the simulated flue gas moves upward through the turbulent ball tower, it first reacts with the solution sprayed from the end of the second mixed liquid delivery pipeline. The solution temperature is high at this time, which is conducive to chemical reactions and improves the reaction effect. The part of the gas that does not participate in the reaction continues to move upward and reacts with the solution sprayed from the end of the first mixed liquid delivery pipeline. The solution temperature is low at this time, which is more conducive to the absorption of carbon dioxide gas. Therefore, the carbon dioxide gas that does not participate in the reaction flows to the bottom of the turbulent ball tower with the solution and continues to participate in the reaction, and the carbon dioxide absorption rate is higher. There is basically no CO2 in the exhaust gas after being treated by the carbon dioxide solidification experimental device in flue gas of the present invention. The carbon dioxide solidification device manufactured based on the process principle of the solidification experimental device does not need to use other equipment for secondary capture treatment. The whole device occupies a small area and is easy to operate. It can improve the carbon dioxide absorption rate while effectively reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a schematic diagram of the experimental device for solidifying carbon dioxide in flue gas of the present invention;

[0028] Figure 2 yes Figure 1 Segmented area diagram of the schematic diagram;

[0029] Figure 3 yes Figure 2 Partial map of area A in the middle;

[0030] Figure 4 yes Figure 2 Partial map of area B in the middle;

[0031] Figure 5 yes Figure 2 Partial map of the middle C area;

[0032] Figure 6 yes Figure 2 Partial map of area D in the middle.

[0033] The names corresponding to the marks in the figure are: 1. water tank; 2. ammonia water tank; 3. second feed pump; 4. first slurry tank; 5. first feed pump; 6. first circulation pump; 7. second discharge pump; 8. first discharge pump; 9. standby discharge pump; 10. second slurry tank; 11. heating heat exchanger; 12. first mixed liquid conveying pipeline; 13. hydrocyclone separator; 14. second mixed liquid conveying pipeline; 15. cooling heat exchanger; 16. second liquid inlet pipeline; 17. first liquid inlet pipeline; 18. Turbulent ball tower; 19. Carbon dioxide cylinder; 20. Air pipeline; 21. Booster fan; 22. Air intake filter; 23. Air inlet; 24. Electric heater; 25. Simulated flue gas pipeline; 26. Water pump; 27. Discharge pipeline; 28. Electric three-way valve; 29. ​​First washing filter; 30. Second washing filter; 31. Ammonium sulfate storage tank; 32. Third discharge pump; 33. Reflux pipeline; 34. Ammonia delivery pipeline; 35. Exhaust pipe. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] Embodiment 1:

[0036] like Figure 1 As shown in FIG. 1 , the experimental device for solidifying carbon dioxide in flue gas includes a water supply unit, an ammonia water unit, a mineral unit, a turbulent ball tower 18, a simulated flue gas supply unit and a filtration unit. Figure 1 The display is divided into Figure 2 The four main areas of ABCD are divided into Figures 3 to 6 .

[0037] The mineral unit includes a first slurry tank 4 and a mineral liquid delivery pipeline, the end of which is connected to a second slurry tank 10, which is connected to the bottom of a turbulent ball tower 18. The mineral liquid delivery pipeline includes a first feed pump 5. The first slurry tank 4 is used to add phosphogypsum, which is dissolved and mixed with water to form a phosphogypsum liquid of a certain concentration according to a set ratio.

[0038] The first slurry tank 4 is connected to a first circulation pipeline, both ends of which are connected to the upper and lower sides of the first slurry tank 4 , and the first circulation pipeline includes a first circulation pump 6 .

[0039] The ammonia water unit includes an ammonia water tank 2 and an ammonia water delivery pipeline 34, the end of which is connected to the second slurry tank 10. Ammonia water can be added to the ammonia water tank 2, and ammonia water and water are configured into an ammonia solution of a certain concentration according to a set ratio. The ammonia water delivery pipeline 34 includes a second feed pump 3.

[0040] The water supply unit includes a water tank 1, a first water supply branch, and a second water supply branch. The first water supply branch and the second water supply branch are used to supply water to the first slurry tank 4 and the ammonia water tank 2 respectively. A flow meter and an electric valve are provided on the water supply branch. The first water supply branch and the second water supply branch are both connected to the bottom of the water tank 1. The first water supply branch and the second water supply branch. The water tank 1 is connected to the tap water pipeline to replenish water to the water tank 1.

[0041] Ammonia water and phosphogypsum liquid enter the second slurry tank 10 and mix, and after being pumped into the turbulent ball tower 18, a chemical reaction occurs with the carbon dioxide in the turbulent ball tower 18, and finally a mixture containing calcium carbonate and ammonium sulfate is generated, so as to realize the solidification of carbon and the resource utilization of industrial waste phosphogypsum. In other embodiments, calcium carbide slag or the like can also be added to the first slurry tank 4 instead of phosphogypsum, which has the effect of final solidification, but the chemical reactions are different and the final products are different.

[0042] A packing layer is provided in the turbulent ball tower 18. The packing layer and its principle are prior art and will not be described in detail. The top of the turbulent ball tower 18 has an air outlet. The turbulent ball tower 18 is provided with a first inlet and a second inlet in sequence below the air outlet. The second slurry tank 10 is connected to a mixed liquid delivery pipeline, and the mixed liquid delivery pipeline is provided with a first liquid inlet pipeline 17 and a second liquid inlet pipeline 16. The first liquid inlet pipeline 17 and the second liquid inlet pipeline 16 are connected to the first inlet and the second inlet, respectively. Spray heads are provided at the ends of the first liquid inlet pipeline 17 and the second liquid inlet pipeline 16 for spraying downward. The first liquid inlet pipeline 17 passes through the cooling heat exchanger 15, so that the inlet temperature of the first inlet is lower than the inlet temperature of the second inlet.

[0043] The mixed liquor delivery pipeline includes a first mixed liquor delivery pipeline 12, a second mixed liquor delivery pipeline 14 and a reflux pipeline 33. One end of the first mixed liquor delivery pipeline 12 is connected to the bottom of the second slurry tank 10, and the other end of the first mixed liquor delivery pipeline 12 is connected to the inlet of the hydrocyclone 13. One end of the second mixed liquor delivery pipeline 14 is connected to the discharge port at the top of the hydrocyclone 13, and the reflux port at the bottom of the hydrocyclone 13 is connected to the second slurry tank 10 through the reflux pipeline 33.

[0044] The first mixed liquid delivery pipeline 12 passes through a temperature-raising heat exchanger 11, so that the temperature of the mixed liquid in the first mixed liquid delivery pipeline 12 reaches 60°C, which is the optimal value; in other embodiments, 55-65°C can also be selected as needed. The first mixed liquid delivery pipeline 12 includes a first discharge pump 8, and the first discharge pump 8 is also connected in parallel with a spare discharge pump 9. The first discharge pump 8 pumps the mixed liquid into the turbulent ball tower 18, and sprays it downward through the end spray head.

[0045] The temperature-raising heat exchanger 11 is a heat exchanger which adopts the existing oil bath heating principle, so that the temperature of the mixed liquid in the first mixed liquid conveying pipeline 12 reaches 60°C.

[0046] The other end of the first mixed liquid delivery pipeline 12 is connected to the inlet of the hydrocyclone 13. The hydrocyclone 13 is used to separate the solid particles generated by the reaction from the liquid. The solid particles flow back to the second slurry tank 10 with a part of the liquid, and a part of the liquid is transported upward through the second mixed liquid delivery pipeline 14 and flows through the cooling heat exchanger 15, so that the temperature of the liquid in the second mixed liquid delivery pipeline 14 is reduced. One path in the cooling heat exchanger 15 flows cold water, which is provided by a chiller. The temperature of the first liquid inlet pipeline 17 after passing through the cooling heat exchanger 15 reaches 20°C, and in other embodiments it can also be 15-25°C.

[0047] The simulated smoke supply unit includes an air pipeline 20, a carbon dioxide pipeline and a simulated smoke pipeline 25. The ends of the air pipeline 20 and the carbon dioxide pipeline are connected to the simulated smoke pipeline 25 so that simulated smoke with a set proportion of carbon dioxide, such as a volume fraction of 25%, passes through the simulated smoke pipeline 25.

[0048] The air pipeline 20 includes an air intake filter 22 and a booster fan 21. Since it is a simulated flue gas, air can be used directly. The air inlet 23 is filtered through the air intake filter 22 to filter impurities in the air, and then the booster fan 21 is used to increase the pressure and mix it upward into the simulated flue gas pipeline 25. The front end of the carbon dioxide pipeline is connected to the carbon dioxide cylinder 19 to provide carbon dioxide, and a flow meter is connected to the carbon dioxide pipeline. In order to conduct experiments, this embodiment artificially configures a gas containing a certain proportion of carbon dioxide. The simulated flue gas pipeline 25 can heat the flue gas passing through to 50°C through an electric heater 24.

[0049] The simulated flue gas pipeline 25 is provided with a first carbon dioxide detector for detecting the initial carbon dioxide concentration. The gas outlet at the top of the turbulent ball tower 18 is connected to an exhaust pipe 35, which is used to discharge the gas after carbon capture, and a second carbon dioxide detector is provided on the exhaust pipe 35. The turbulent ball tower 18 is provided with at least one third carbon dioxide detector for detecting the carbon dioxide concentration in the gas during the reaction process. The third carbon dioxide detector is provided with two upper and lower ones, both below the spray head of the second liquid inlet pipeline 16, for understanding the reaction effect.

[0050] When the simulated flue gas moves upward through the turbulent ball tower 18, it first reacts with the solution sprayed from the end of the second mixed liquid delivery pipeline 14. The temperature of the solution at this time is high, which is conducive to chemical reactions and improves the reaction effect. The part of the gas that does not participate in the reaction continues to move upward and reacts with the solution sprayed from the end of the first mixed liquid delivery pipeline 12. The temperature of the solution at this time is low, which is more conducive to the absorption of carbon dioxide gas. As a result, the carbon dioxide gas that does not participate in the reaction flows to the bottom of the turbulent ball tower 18 along with the solution and continues to participate in the reaction, thereby improving the final carbon dioxide absorption and solidification effect. After experimental verification, the carbon dioxide absorption rate in the simulated flue gas can reach 99%. If there is no cooling and secondary spraying of the first mixed liquid delivery pipeline, the carbon dioxide absorption rate is about 90%, and the CO2 in the tail gas still needs to be captured and treated for the second time. Adding a new capture device will increase the equipment footprint, make the operation complicated, and increase the cost investment.

[0051] The first mixed liquid delivery pipeline 12 is connected to the discharge pipeline 27 through a three-way joint. The first mixed liquid delivery pipeline 12 is provided with an electric valve, and the delivery direction of the mixed liquid is switched by opening or closing the electric valve. The discharge pipeline 27 includes a second discharge pump 7, and the discharge pipeline 27 delivers the mixed liquid after the reaction to the washing filter. The mixed liquid after the reaction contains calcium carbonate, ammonium sulfate, and unreacted ammonia water or phosphogypsum liquid. In this embodiment, two washing filters are provided, a first washing filter 29 and a second washing filter 30. When one of them is full, it is switched to the other washing filter by using an electric three-way valve 28. The washing filter is provided with a liquid level detector and an electric stirring element. A filter screen is provided in the washing filter, which can realize solid-liquid separation, calcium carbonate remains on the top, and ammonium sulfate can flow down and further flow into the ammonium sulfate storage tank 31; the ammonium sulfate solution in the ammonium sulfate storage tank 31 can be supplied to the subsequent process through the third discharge pump 32. The electric stirring element is used for stirring. During the stirring process, the water pump 26 can be used to inject water into the washing filter for dilution. The water pump 26 is connected to the water injection pipeline, and one end of the water injection pipeline is connected to the water tank 1. The pressurized pipeline can also be used to pressurize the washing filter to provide pressure in the container and improve the filtering effect. The pressurized pipeline is connected to the pressurized pipeline, and the pressurized pipeline provides high-pressure air.

[0052] The above is the main structure and principle of the experimental device for solidification of carbon dioxide in flue gas, which is mainly used in the laboratory. During the experiment, the first mixed liquid delivery pipeline 12 can be used without cooling the mixed liquid, and the turbulent ball tower 18 retains an inlet, and a carbon dioxide absorption rate can be measured as a comparison to verify the effects of different processes.

[0053] Based on the optimal process solution of the above-mentioned embodiment 1, this design concept is applied to the actual scene with some minor changes.

[0054] The device for solidifying carbon dioxide in flue gas includes a water supply unit, an ammonia water unit, a mineral unit, a turbulent ball tower 18, a flue gas supply unit and a filtration unit. The mineral unit includes a first slurry tank 4 and a mineral liquid delivery pipeline, the end of which is connected to a second slurry tank 10, and the second slurry tank 10 is connected to the bottom of the turbulent ball tower 18. The ammonia water unit includes an ammonia water tank 2 and an ammonia water delivery pipeline 34, the end of which is connected to the second slurry tank 10. The water supply unit includes a first water supply branch and a second water supply branch, which are used to provide water to the first slurry tank 4 and the ammonia water tank 2, respectively. The top of the turbulent ball tower 18 has an air outlet, and the turbulent ball tower 18 is provided with a first inlet and a second inlet in sequence below the air outlet. The second slurry tank 10 is connected to a mixed liquid delivery pipeline, and the mixed liquid delivery pipeline is provided with a first liquid inlet pipeline 17 and a second liquid inlet pipeline 16. The first liquid inlet pipeline 17 and the second liquid inlet pipeline 16 are connected to the first inlet and the second inlet, respectively, and the ends of the first liquid inlet pipeline 17 and the second liquid inlet pipeline 16 are provided with spray heads. The first liquid inlet pipeline 17 passes through the cooling heat exchanger 15, so that the liquid inlet temperature of the first inlet is lower than the liquid inlet temperature of the second inlet. The flue gas supply unit includes a flue gas pipeline for accessing the flue gas to be treated.

[0055] The main components and connection methods of the device for solidifying carbon dioxide in flue gas are the same as those in Example 1, and will not be described in detail. The difference is that no carbon dioxide cylinder is provided, and the air inlet in Example 1 directly enters real flue gas; the real flue gas has a high temperature and does not need to be heated by an electric heater.

[0056] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. Experimental device for solidification of carbon dioxide in flue gas, characterized by: Including water supply unit, ammonia water unit, mineral unit, turbulent ball tower and simulated flue gas supply unit; The mineral unit includes a first slurry tank and a mineral liquid delivery pipeline, the end of the mineral liquid delivery pipeline is connected to a second slurry tank, and the second slurry tank is connected to the bottom of the turbulent ball tower; The ammonia water unit comprises an ammonia water tank and an ammonia water delivery pipeline, and the end of the ammonia water delivery pipeline is connected to the second slurry tank; The water supply unit comprises a first water supply branch and a second water supply branch, which are used to supply water to the first slurry tank and the ammonia water tank respectively; The top of the turbulent ball tower is provided with an air outlet, and the turbulent ball tower is provided with a first inlet and a second inlet in sequence below the air outlet, the second slurry tank is connected with a mixed liquid delivery pipeline, the mixed liquid delivery pipeline is provided with a first liquid inlet pipeline and a second liquid inlet pipeline, the first liquid inlet pipeline and the second liquid inlet pipeline are connected to the first inlet and the second inlet respectively, and the ends of the first liquid inlet pipeline and the second liquid inlet pipeline are provided with spray heads; the first liquid inlet pipeline passes through a cooling heat exchanger, so that the liquid inlet temperature of the first inlet is lower than the liquid inlet temperature of the second inlet; The simulated smoke supply unit includes an air pipeline, a carbon dioxide pipeline and a simulated smoke pipeline. The ends of the air pipeline and the carbon dioxide pipeline are connected to the simulated smoke pipeline so that simulated smoke with a set proportion of carbon dioxide passes through the simulated smoke pipeline.

2. The experimental device for solidifying carbon dioxide in flue gas according to claim 1, characterized in that: The first slurry tank is used for adding phosphogypsum.

3. The experimental device for solidifying carbon dioxide in flue gas according to claim 2, characterized in that: The first slurry tank is connected to a first circulation pipeline, two ends of the first circulation pipeline are connected to the upper and lower sides of the first slurry tank, and the first circulation pipeline includes a first circulation pump.

4. The experimental device for solidifying carbon dioxide in flue gas according to claim 1, characterized in that: The mixed liquor delivery pipeline includes a first mixed liquor delivery pipeline, a second mixed liquor delivery pipeline and a reflux pipeline, one end of the first mixed liquor delivery pipeline is connected to the bottom of the second slurry tank, the other end of the first mixed liquor delivery pipeline is connected to the inlet of the hydrocyclone separator, one end of the second mixed liquor delivery pipeline is connected to the discharge port of the hydrocyclone separator, and the reflux port at the bottom of the hydrocyclone separator is connected to the second slurry tank through the reflux pipeline.

5. The experimental device for solidifying carbon dioxide in flue gas according to claim 4, characterized in that: The first mixed liquid delivery pipeline passes through a temperature-raising heat exchanger, so that the temperature of the mixed liquid in the first mixed liquid delivery pipeline reaches 55-65°C.

6. The experimental device for solidifying carbon dioxide in flue gas according to claim 5, characterized in that: The temperature of the first liquid inlet pipeline reaches 15-25°C after passing through the cooling heat exchanger.

7. The experimental device for solidifying carbon dioxide in flue gas according to claim 4, characterized in that: The first mixed liquid delivery pipeline is connected to a discharge pipeline via a three-way joint. The first mixed liquid delivery pipeline is provided with an electric valve, which is used to switch the delivery direction of the mixed liquid. The discharge pipeline includes a discharge pump, and the discharge pipeline transports the mixed liquid after the reaction is completed to the washing filter.

8. The experimental device for solidifying carbon dioxide in flue gas according to claim 1, characterized in that: The air pipeline includes an air intake filter and a booster fan.

9. The experimental device for solidifying carbon dioxide in flue gas according to claim 1, characterized in that: The simulated flue gas pipeline is provided with a first carbon dioxide detector for detecting the initial carbon dioxide concentration, and the gas outlet at the top of the turbulent ball tower is connected to an exhaust pipe, on which a second carbon dioxide detector is provided.

10. A device for solidifying carbon dioxide in flue gas, characterized in that: Including water supply unit, ammonia water unit, mineral unit, turbulent ball tower and flue gas supply unit; The mineral unit includes a first slurry tank and a mineral liquid delivery pipeline, the end of the mineral liquid delivery pipeline is connected to a second slurry tank, and the second slurry tank is connected to the bottom of the turbulent ball tower; The ammonia water unit comprises an ammonia water tank and an ammonia water delivery pipeline, and the end of the ammonia water delivery pipeline is connected to the second slurry tank; The water supply unit comprises a first water supply branch and a second water supply branch, which are used to supply water to the first slurry tank and the ammonia water tank respectively; The top of the turbulent ball tower is provided with an air outlet, and the turbulent ball tower is provided with a first inlet and a second inlet in sequence below the air outlet, the second slurry tank is connected with a mixed liquid delivery pipeline, the mixed liquid delivery pipeline is provided with a first liquid inlet pipeline and a second liquid inlet pipeline, the first liquid inlet pipeline and the second liquid inlet pipeline are connected to the first inlet and the second inlet respectively, and the ends of the first liquid inlet pipeline and the second liquid inlet pipeline are provided with spray heads; the first liquid inlet pipeline passes through a cooling heat exchanger, so that the liquid inlet temperature of the first inlet is lower than the liquid inlet temperature of the second inlet; The flue gas supply unit comprises a flue gas pipeline for receiving the flue gas to be treated.

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