Experimental device for sealing carbon dioxide in waste incineration fly ash

Abstract

The utility model relates to the technical field of solid waste resource utilization and carbon dioxide sealing, in particular to an experimental device for sealing carbon dioxide in waste incineration fly ash, which comprises a tank body and a tank cover. The tank body is in sealed connection with the tank cover, a water inlet pipe, a carbon dioxide gas inlet pipe and an ammonia gas inlet pipe are arranged on the tank body, an ash inlet hopper and a gas pressure sensor are arranged on the tank cover, control valves are mounted on the water inlet pipe and an ash inlet pipe of the ash inlet hopper, check valves are respectively arranged on the carbon dioxide gas inlet pipe and the ammonia gas inlet pipe, and the gas pressure sensor is arranged on the gas pressure sensor. A carbon dioxide gas inlet pipe and an ammonia gas inlet pipe are arranged and are connected with the aeration head at the same time. The fly ash-carbon dioxide double-waste co-treatment device realizes fly ash-carbon dioxide double-waste co-treatment, plays a positive role in realizing carbon peak reaching and carbon neutralization, is good in sealing performance, ensures the stability and accuracy of experimental exploration, is beneficial to exploring the optimal process condition of carbon dioxide storage, and plays a positive role in industrial amplification.

Description

Technical Field

[0001] The utility model relates to the technical field of solid waste resource utilization and carbon dioxide sealing, and in particular to an experimental device for sealing carbon dioxide in fly ash from garbage incineration. Background Art

[0002] The management of hazardous and harmful wastes is an integral part of global environmental issues and a prominent issue in my country's environmental protection. Municipal waste incineration is an important means of disposing of urban domestic waste. The incineration process produces a large amount of fly ash. Waste incineration fly ash contains many harmful heavy metals such as lead, cadmium, and zinc. More importantly, incineration fly ash is also enriched with toxic components such as dioxins and furans that are carcinogenic to humans. Existing environmental laws and regulations at home and abroad have classified it as hazardous waste, emphasizing that it must be handled safely.

[0003] The carbon dioxide storage technology is actually to store carbon dioxide in a specific natural or artificial "container", and use physical, chemical, biochemical and other methods to seal the carbon dioxide for hundreds of years or even longer, instead of releasing it into the atmosphere; forests, oceans, bottom layers, chemical reactors, etc. can all be used as "containers" for storing carbon dioxide. By sealing carbon dioxide, the greenhouse effect can be reduced, global warming can be slowed down, the ecosystem can be protected, and solutions to climate change can be provided.

[0004] The impact of waste incineration fly ash and carbon dioxide on people's lives and the environment cannot be ignored. Therefore, after people's exploration, it is currently possible to use waste incineration fly ash to seal carbon dioxide, thereby achieving the dual waste treatment of fly ash and carbon dioxide; but in actual application, the storage capacity of carbon dioxide by waste incineration fly ash is limited, and the application effect is difficult to meet people's expectations. Therefore, an experimental device that can stably explore the process conditions and parameters of waste incineration fly ash sealing carbon dioxide is a problem that existing laboratories need to solve. Utility Model Content

[0005] The purpose of the utility model is to provide an experimental device for sealing carbon dioxide in waste incineration fly ash in view of the deficiencies of the above-mentioned prior art, so as to achieve stable and accurate exploration of the process conditions and parameters of sealing carbon dioxide in waste incineration fly ash in the laboratory, thereby providing data support for industrial applications.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an experimental device for sealing carbon dioxide in fly ash from garbage incineration, comprising a tank body, a tank cover is sealedly installed on the tank body, a water inlet pipe, a carbon dioxide inlet pipe and an ammonia inlet pipe are arranged on the tank body, and an ash inlet hopper and an air pressure sensor are sealedly installed on the tank cover; control valves are respectively installed on the water inlet pipe and the ash inlet hopper, and check valves are respectively installed on the carbon dioxide inlet pipe and the ammonia inlet pipe.

[0007] Furthermore, the carbon dioxide inlet pipe and the ammonia inlet pipe are simultaneously connected to the aeration head in the tank body.

[0008] Furthermore, the tank body is placed on a magnetic stirrer, a magnet is placed in the tank body, and the magnet cooperates with the magnetic stirrer.

[0009] Furthermore, a mounting hole is provided on the tank cover, the mounting hole is connected to the tank body, and the air pressure sensor is threadedly connected to the mounting hole; a connecting groove is provided on the tank cover, the connecting groove is connected to the tank body, a sealing plug is threadedly connected through the connecting groove, a through hole is provided in the sealing plug, an elastic rubber ring is provided between the sealing plug and the connecting groove, the ash inlet pipe of the ash inlet hopper extends to the interior of the tank body through the through hole in the sealing plug, the elastic rubber ring and the connecting groove in sequence, and the control valve is installed on the ash inlet pipe of the ash inlet hopper.

[0010] Furthermore, a clamping head is arranged around the mouth of the can body, a clamping groove is arranged around the inner side of the can cover, a plurality of clamping grooves and clamping heads are arranged and matched in pairs, and a sealing gasket is arranged around the inner side of the can cover.

[0011] Furthermore, a limiting block is provided at one end of the slot, and the limiting block is arranged in the needle direction.

[0012] Beneficial effects of the utility model:

[0013] 1. The introduction of ammonia can effectively increase the storage capacity of carbon dioxide, realizing the co-treatment of fly ash and carbon dioxide;

[0014] 2. The device has good sealing performance, and the experimental results are stable and accurate, which plays a positive role in exploring the optimal process conditions;

[0015] 3. A large amount of calcium oxide in fly ash reacts to form calcium carbonate, heavy metal lead forms lead carbonate precipitation under the action of carbon dioxide, and other heavy metals are dissolved in the solution under the action of bicarbonate, so that the heavy metal leaching of fly ash meets the standard requirements and helps protect the environment;

[0016] 4. Using fly ash from waste incineration to seal carbon dioxide not only reduces costs, but also achieves energy conservation, environmental protection and easy operation, and plays a positive role in achieving carbon peak and carbon neutrality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the tank body and the tank cover of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the can cover of the utility model;

[0020] Figure 4 It is a schematic diagram (sectional view) of the structure of the can cover of the utility model.

[0021] The names corresponding to the marks in the figure are:

[0022] 1. Ash hopper; 2. Water inlet pipe; 3. Tank body; 4. Magnet; 5. Air pressure sensor; 6. Tank cover; 7. Carbon dioxide inlet pipe; 8. Check valve; 9. Ammonia inlet pipe; 10. Magnetic stirrer; 11. Aeration head; 12. Control valve; 13. Sealing cock; 14. Mounting hole; 15. Connecting groove; 16. Tank mouth; 17. Clamp; 18. Clamping groove; 19. Limit block; 20. Elastic rubber ring; 21. Sealing gasket. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0024] Embodiments of the present utility model:

[0025] like Figure 1-4 As shown, in the experimental device of this embodiment, a tank body 3 is provided, a magnet 4 is placed in the tank body 3, the magnet 4 cooperates with a magnetic stirrer 10, a water inlet pipe 2 is provided on the tank body 3, a control valve 12 is provided on the water inlet pipe 2, and a carbon dioxide inlet pipe 7 and an ammonia inlet pipe 9 are provided at the same time, the carbon dioxide inlet pipe 7 and the ammonia inlet pipe 9 are connected to the aeration head 11 at the same time, and check valves 8 are respectively provided on the carbon dioxide inlet pipe 7 and the ammonia inlet pipe 9.

[0026] A tank cover 6 is sealedly connected to the tank body 3, and an ash hopper 1 and an air pressure sensor 5 are arranged on the tank cover 6, wherein a mounting hole 14 is opened on the tank cover 6, and the air pressure sensor 5 is threadedly connected to the mounting hole 14, and a connecting groove 15 is arranged on the tank cover 6, and the connecting groove 15 is threadedly connected to the sealing plug 13, and an elastic rubber ring 20 is arranged between the bottom of the connecting groove 15 and the sealing plug 13, and a through hole is arranged in the sealing plug 13, and the ash inlet pipe of the ash hopper 1 passes through the through hole in the sealing plug 13, the elastic rubber ring 20 and the connecting groove 15 and extends into the tank body 3, and a control valve 12 is installed on the ash inlet pipe of the ash hopper 1; when the sealing plug 13 is tightened, the sealing plug 13 compresses the elastic rubber ring 20 to deform, and after deformation, the inner ring of the elastic rubber ring 20 is sealed and connected to the ash inlet pipe.

[0027] A clamping head 17 is arranged around the tank mouth 16 of the tank body 3, and a clamping groove 18 is arranged around the inner side of the tank cover 6. The clamping groove 18 is rotatably matched with the clamping head 17, and a limiting block 19 is arranged at one end of the clamping groove 18. There are multiple clamping heads 17 and the clamping grooves 18, and they are matched in pairs. The limiting blocks 19 are arranged at the same time relative to the clamping grooves 18, and a sealing gasket 21 is arranged around the inner side of the tank cover 6.

[0028] The principle of this utility model is:

[0029] When the present invention is used, the magnet 4 is first placed in the tank body 3, and the tank body 3 is placed on the magnetic stirrer 10, and then the notch between the clamping head 17 of the tank body 3 and the clamping groove 18 of the tank cover 6 is aligned, and the tank cover 6 is pressed down and rotated to achieve a sealed connection between the tank cover 6 and the tank body 3; at this time, the ash inlet hopper 1 is inserted into the tank body 3 and the sealing cock 13 is tightened to achieve the connection and sealing of the ash inlet hopper 1 (for the convenience of cleaning, the ash inlet hopper 1 should not be fixedly connected to the tank cover 6), and then the air pressure sensor 5 is screwed on and the power is turned on.

[0030] During the experimental operation, fly ash generated by the incineration of domestic waste is added to the tank body 3 through the ash inlet hopper 1, and water is added to the tank body 3 through the water inlet pipe 2. Under stirring conditions, carbon dioxide and ammonia are introduced into the tank body 3 through the carbon dioxide inlet pipe 7 and the ammonia inlet pipe 9. The reactions involved are as follows:

[0031] NH3+CO2+H2O=NH4HCO3

[0032] The purpose of introducing ammonia is to make carbon dioxide more soluble in water and thus be sealed; during the experimental operation, when the pressure detector value exceeds the safety range, stop adding gas, do not stop stirring, and continue to introduce gas when the pressure returns to a safe value, and repeat this process until the pressure cannot drop, indicating that the carbon dioxide is already saturated and sealed. The amount of carbon dioxide introduced is recorded by the flow meter on the gas cylinder (it should be noted that if there is no flow meter on the gas cylinder, a flow meter must be installed to record the flow of carbon dioxide).

[0033] During the experiment, by adjusting the experimental parameters, such as the ratio of carbon dioxide and ammonia, stirring intensity, the ratio of fly ash and water, etc., the optimal experimental parameters were explored to provide data support for the actual engineering. The utility model device is used for the co-treatment of fly ash and carbon dioxide, and plays a positive role in achieving carbon peak and carbon neutrality.

Claims

1. An experimental device for storing carbon dioxide in fly ash from garbage incineration, characterized by: The invention comprises a tank body (3), a tank cover (6) is sealedly mounted on the tank body (3), a water inlet pipe (2), a carbon dioxide inlet pipe (7) and an ammonia inlet pipe (9) are arranged on the tank body (3), an ash inlet hopper (1) and an air pressure sensor (5) are sealedly mounted on the tank cover (6); control valves (12) are respectively mounted on the water inlet pipe (2) and the ash inlet hopper (1), and check valves (8) are respectively mounted on the carbon dioxide inlet pipe (7) and the ammonia inlet pipe (9).

2. The experimental device for storing carbon dioxide in fly ash from garbage incineration according to claim 1, characterized in that: The carbon dioxide inlet pipe (7) and the ammonia inlet pipe (9) are simultaneously connected to the aeration head (11) in the tank body (3).

3. The experimental device for storing carbon dioxide in fly ash from garbage incineration according to claim 1 is characterized by: The tank body (3) is placed on a magnetic stirrer (10), a magnet (4) is placed in the tank body (3), and the magnet (4) cooperates with the magnetic stirrer (10).

4. The experimental device for storing carbon dioxide in fly ash from garbage incineration according to claim 1 is characterized by: The tank cover (6) is provided with a mounting hole (14), the mounting hole (14) is connected to the tank body (3), and the air pressure sensor (5) is threadedly connected to the mounting hole (14); a connecting groove (15) is provided on the tank cover (6), the connecting groove (15) is connected to the tank body (3), a sealing plug (13) is threadedly connected through the connecting groove (15), a through hole is provided in the sealing plug (13), an elastic rubber ring (20) is provided between the sealing plug (13) and the connecting groove (15), an ash inlet pipe of the ash inlet hopper (1) extends to the interior of the tank body (3) through the through hole in the sealing plug (13), the elastic rubber ring (20) and the connecting groove (15) in sequence, and a control valve (12) is installed on the ash inlet pipe of the ash inlet hopper (1).

5. The experimental device for storing carbon dioxide using fly ash from garbage incineration according to claim 1 is characterized by: A clamping head (17) is arranged around the mouth (16) of the tank body (3), a clamping groove (18) is arranged around the inner side of the tank cover (6), a plurality of clamping grooves (18) and clamping heads (17) are arranged and matched in pairs, and a sealing gasket (21) is arranged around the inner side of the tank cover (6).

6. The experimental device for storing carbon dioxide using fly ash from garbage incineration according to claim 5, characterized in that: A limiting block (19) is arranged at one end of the clamping slot (18), and the limiting block (19) is arranged in the needle direction.

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