CN219015051U - Waste heat utilization device beneficial to carbon neutralization electrolysis flue gas - Google Patents
Waste heat utilization device beneficial to carbon neutralization electrolysis flue gas Download PDFInfo
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- CN219015051U CN219015051U CN202222786533.XU CN202222786533U CN219015051U CN 219015051 U CN219015051 U CN 219015051U CN 202222786533 U CN202222786533 U CN 202222786533U CN 219015051 U CN219015051 U CN 219015051U
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Abstract
The utility model discloses a waste heat utilization device beneficial to carbon neutralization electrolysis flue gas, which relates to the technical field of flue gas treatment and comprises an electrolytic tank, a waste heat recovery tank and a tail gas treatment tank, wherein a tail gas recovery pipe is arranged at the top end of the electrolytic tank in a penetrating manner, one end of the tail gas recovery pipe, which is far away from the electrolytic tank, is connected with a curved radiating pipe, one end of the curved radiating pipe, which is far away from the tail gas recovery pipe, is fixedly connected with a tail gas inlet pipe, and the tail gas inlet pipe is fixedly connected with a drainage pipe. According to the utility model, the heat generated by electrolysis in the electrolytic tank and the surplus heat of electric energy enter the curved radiating pipe through the tail gas recovery pipe, so that the tail gas heat in the curved radiating pipe is absorbed by the hot water through the pipe wall of the curved radiating pipe, and the heat in the tail gas can be rapidly absorbed by the hot water due to the large surface contact area of the curved radiating pipe, and when the water temperature is raised to a usable value due to the heat absorbed by the hot water, the hot water is recovered and used through the hot water recovery pipe.
Description
Technical Field
The utility model relates to the technical field of flue gas treatment, in particular to a waste heat utilization device beneficial to carbon neutralization and electrolysis of flue gas.
Background
The yield of electrolytic aluminum in 2020 is about 3708 ten thousand tons, the total electricity consumption is about 5005.8 hundred million kilowatt-hours, and the total electricity consumption is about 6.5% of the total electricity consumption in 2020 national society. As can be seen, the electrolytic aluminum industry has the characteristic of high power consumption, and at present, in the process of electrolytic aluminum, the average electric energy actually consumed per ton of aluminum is about 13000 kilowatt-hours, while the theoretical average electric energy consumed per ton of aluminum is about 6320 kilowatt-hours.
Therefore, in the process of electrolyzing aluminum, the utilization efficiency of electric energy is less than half, and for the industrial concept of realizing carbon neutralization, the industrial technology needs to be innovated, and the waste heat in the electrolytic tank is recycled, so that the utilization efficiency of electric energy in the process of electrolyzing aluminum is improved.
Therefore, it is necessary to provide a waste heat utilization device for carbon neutralization of electrolysis flue gas to solve the above problems.
Disclosure of Invention
(one) solving the technical problems
The utility model aims at: the utility model provides a waste heat utilization device which is beneficial to carbon neutralization of electrolytic flue gas, and aims to solve the problems that the utilization efficiency of electric energy in the electrolytic process of the existing electrolytic aluminum device is too low, and a large amount of electric energy can not be recycled due to heat dissipation.
(II) technical scheme
The utility model adopts the following technical scheme for realizing the purposes:
the waste heat utilization device for facilitating carbon neutralization of electrolytic flue gas comprises an electrolytic tank, a waste heat recovery tank and a tail gas treatment tank, wherein a tail gas recovery pipe is arranged at the top end of the electrolytic tank in a penetrating manner, one end of the tail gas recovery pipe away from the electrolytic tank and a curved radiating pipe are arranged, one end of the curved radiating pipe away from the tail gas recovery pipe is fixedly connected with a tail gas inlet pipe, the tail gas inlet pipe is fixedly connected with a drainage pipe, and the lower end of the drainage pipe is fixedly connected with a gas guide pipe;
the heat-insulating cotton is filled in a cavity between the heat-insulating pipeline and the tail gas recovery pipe, the interior of the waste heat recovery tank is loaded with warm water, the interior of the waste heat recovery tank is provided with a hot water recovery pipe in a penetrating way, and the part of the curved radiating pipe, which is about four fifths of the part, is immersed in the normal-temperature water;
the external upper surface fixedly connected with drainage motor support frame of tail gas treatment groove, drainage motor support frame and drainage motor fixed connection, the output shaft and the drainage rotary shaft fixed connection of drainage motor, the external fixedly connected with drainage fan wheel of drainage rotary shaft, the inside upper end of tail gas treatment groove is provided with the tail gas absorption treatment jar, the upper end fixedly connected with tail gas emission pipe of tail gas absorption treatment jar.
Further, the inside upper end of electrolysis trough is provided with the baffle, the inlet port has been seted up to the upper surface of baffle, the baffle is close to the upper surface fixedly connected with guide fan of tail gas recovery pipe.
Further, the lower end of the air duct is L-shaped, and a plurality of air holes are uniformly formed in the outer part of the air duct.
Further, the tail gas absorption treatment tank is composed of five groups of active carbon layers and four groups of filter cotton layers, and the active carbon layers and the filter cotton layers are arranged in a staggered mode.
Further, the tail gas treatment tank is internally filled with a weak alkaline solution, and the weak alkaline solution is sodium bicarbonate solution.
Further, the upper surface fixedly connected with guide block of tail gas treatment groove, drainage swivel joint is in the rotation hole inside of guide block.
(III) beneficial effects
The beneficial effects of the utility model are as follows:
1. when the device is used, the heat generated by electrolysis in the electrolytic tank and the surplus heat of electric energy enter the curved radiating pipe through the tail gas recovery pipe, the curved radiating pipe is arranged in normal temperature water, so that the tail gas heat in the curved radiating pipe is absorbed by the normal temperature water through the pipe wall of the curved radiating pipe, the heat in the tail gas can be quickly absorbed by the normal temperature water due to the large surface contact area of the curved radiating pipe, the temperature of the normal temperature water rises, after the water temperature rises to a usable value due to the heat absorbed by the normal temperature water, the hot water is recovered and used through the hot water recovery pipe, the tail gas after the heat is absorbed enters the tail gas inlet pipe through the curved radiating pipe and then enters the drainage pipe through the tail gas inlet pipe, the tail gas generated by electrolysis enters the gas guide pipe, so that the tail gas generated by electrolysis is neutralized with sodium bicarbonate in the tail gas treatment tank, the water-soluble acidic substances in the tail gas are absorbed, the water-insoluble acidic substances are doped in the tail gas, the tail gas is upwards entered into the tail gas absorption treatment tank, and the water-insoluble acidic substances are adsorbed by the active carbon layer and the cotton layer, and the water-insoluble acidic substances are discharged from the tail gas absorption tank, so that the tail gas can reach the safety emission standard.
2. According to the utility model, the partition plate and the air inlet port are arranged, so that a partition area is formed at the upper end of the inside of the electrolytic tank, and therefore, the tail gas can only enter through the air inlet port, and the guide fan is arranged and used for accelerating the air flow above the partition plate, so that the tail gas is accelerated to enter the tail gas recovery pipe under the action of negative pressure of air flow, and the tail gas recovery utilization efficiency is improved.
3. According to the utility model, under the driving action of the drainage fan, the drainage fan drives the drainage rotating shaft to rotate, and the drainage rotating shaft drives the drainage fan wheel to rotate, so that negative pressure is formed in the drainage tube under the rotating action of the drainage fan wheel, and the tail gas is accelerated to enter the drainage tube.
Drawings
FIG. 1 is a schematic view of a three-dimensional structure of the present utility model;
FIG. 2 is a schematic diagram of a cross-sectional structure of the present utility model;
FIG. 3 is a schematic view showing the internal structure of the electrolytic cell of the present utility model;
FIG. 4 is a schematic view showing the internal structure of the waste heat recovery tank of the present utility model;
FIG. 5 is a schematic view showing the internal structure of the exhaust treatment tank according to the present utility model;
FIG. 6 is a schematic view of a connection structure of the drainage mechanism of the present utility model;
fig. 7 is a schematic diagram of a top view connection structure of the present utility model.
Reference numerals: 1. an electrolytic cell; 2. a waste heat recovery tank; 3. a tail gas treatment tank; 4. a tail gas recovery pipe; 5. a curved radiating pipe; 6. a tail gas inlet pipe; 7. a drainage tube; 8. an air duct; 9. a heat preservation pipeline; 10. thermal insulation cotton; 11. normal temperature water; 12. a hot water recovery pipe; 13. a drainage motor support frame; 14. a drainage motor; 15. drainage rotating shaft; 16. a drainage fan wheel; 17. a tail gas absorption treatment tank; 18. a tail gas discharge pipe; 19. a partition plate; 20. guiding a fan; 21. an air inlet port; 22. and a guide block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-7, a waste heat utilization device for facilitating carbon neutralization of electrolysis flue gas comprises an electrolysis tank 1, a waste heat recovery tank 2 and a tail gas treatment tank 3, wherein a weakly alkaline solution is contained in the tail gas treatment tank 3, the weakly alkaline solution is sodium bicarbonate solution, a guide block 22 is fixedly connected to the upper surface of the tail gas treatment tank 3, a drainage rotating shaft 15 is rotatably connected in a rotating hole of the guide block 22, a tail gas recovery pipe 4 is arranged at the top end of the electrolysis tank 1 in a penetrating manner, one end of the tail gas recovery pipe 4, far away from the electrolysis tank 1, is connected with a curved radiating pipe 5, one end of the curved radiating pipe 5, far away from the tail gas recovery pipe 4, is fixedly connected with a tail gas inlet pipe 6, the tail gas inlet pipe 6 is fixedly connected with a drainage pipe 7, the lower end of the drainage pipe 7 is fixedly connected with a gas guide pipe 8, the lower end of the gas guide pipe 8 is of an L-shaped shape, and a plurality of air holes are uniformly formed in the outer part of the gas guide pipe 8;
the outside of the tail gas recovery pipe 4 is sleeved with a heat preservation pipeline 9, a cavity between the heat preservation pipeline 9 and the tail gas recovery pipe 4 is filled with heat preservation cotton 10, the inside of the waste heat recovery tank 2 is loaded with warm water 11, the inside of the waste heat recovery tank 2 is provided with a hot water recovery pipe 12 in a penetrating way, and the part of the curved radiating pipe 5, which is about four fifths, is immersed in the normal temperature water 11;
the outside upper surface fixedly connected with drainage motor support frame 13 of tail gas treatment groove 3, drainage motor support frame 13 and drainage motor 14 fixed connection, the output shaft and the drainage rotary shaft 15 fixed connection of drainage motor 14, the outside fixedly connected with drainage fan wheel 16 of drainage rotary shaft 15, the inside upper end of tail gas treatment groove 3 is provided with tail gas absorption treatment jar 17, tail gas absorption treatment jar 17 comprises active carbon layer and cotton filter layer, the active carbon layer is five groups, cotton filter layer is four groups, active carbon layer and cotton filter layer are crisscross to be set up, the upper end fixedly connected with tail gas emission pipe 18 of tail gas absorption treatment jar 17.
In this embodiment, when in use, the heat generated by electrolysis in the electrolytic tank 1 and the surplus heat of electric energy enter the curved radiating pipe 5 through the tail gas recovery pipe 4, and the curved radiating pipe 5 is placed in the low-temperature water 11, so that the tail gas heat in the curved radiating pipe 5 is absorbed by the low-temperature water through the pipe wall of the curved radiating pipe 5, and the heat in the tail gas can be quickly absorbed by the normal-temperature water 11 due to the large surface contact area of the curved radiating pipe 5, so that the temperature of the normal-temperature water 11 is increased, and when the temperature of the water is increased to a usable value due to the heat absorbed by the normal-temperature water 11, the hot water is recovered and used through the hot water recovery pipe 12.
The tail gas after heat is absorbed enters the tail gas inlet pipe 6 through the curved radiating pipe 5, then enters the drainage pipe 7 through the tail gas inlet pipe 6, the tail gas in the drainage pipe 7 enters the air duct 8, so that the tail gas generated by electrolysis and sodium bicarbonate in the tail gas treatment tank 3 are subjected to neutralization reaction, water-soluble acidic substances in the tail gas are absorbed, water-insoluble acidic substances are doped in the tail gas and enter the tail gas absorption treatment tank 17 upwards, and water-insoluble acidic substances are adsorbed through the active carbon layer and the filter cotton layer, so that the tail gas discharged from the tail gas discharge pipe 18 reaches the safety discharge standard.
Example 2
Referring to fig. 3, this embodiment is further optimized based on embodiment 1, specifically, a partition plate 19 is disposed at an upper end of an inside of the electrolytic tank 1, an air inlet 21 is disposed on an upper surface of the partition plate 19, and a guiding fan 20 is fixedly connected to an upper surface of the partition plate 19, which is close to the tail gas recovery pipe 4.
In this embodiment, through setting up baffle 19 and inlet port 21, be convenient for form the partition region in the inside upper end of electrolysis trough 1 to make the tail gas only get into through inlet port 21, through setting up guide fan 20, be used for accelerating the air flow of baffle 19 top, thereby under the air current negative pressure effect, the accelerating tail gas enters into in the tail gas recovery pipe 4, improves tail gas recycle efficiency.
Example 3
Referring to fig. 6, the present embodiment is optimized based on example 1 or example 2, specifically, the upper surface of the tail gas treatment tank 3 is fixedly connected with a guide block 22, and the drainage rotating shaft 15 is rotatably connected inside a rotation hole of the guide block 22.
In this embodiment, under the driving action of the drainage fan 14, the drainage fan 14 drives the drainage rotating shaft 15 to rotate, and the drainage rotating shaft 15 drives the drainage fan wheel 16 to rotate, so that under the rotation action of the drainage fan wheel 16, negative pressure is formed in the drainage tube 7, and the tail gas is accelerated to enter the drainage tube 7.
To sum up: in the utility model, when in use, the heat generated by electrolysis in the electrolytic tank 1 and the redundant heat of electric energy enter the curved radiating pipe 5 through the tail gas recovery pipe 4, the curved radiating pipe 5 is arranged in the normal temperature water 11, so that the tail gas heat in the curved radiating pipe 5 is absorbed by the normal temperature water through the pipe wall of the curved radiating pipe 5, the heat in the tail gas can be quickly absorbed by the normal temperature water 11 due to the large surface contact area of the curved radiating pipe 5, the temperature of the normal temperature water 11 is increased, when the water temperature is increased to a usable value due to the heat absorbed by the normal temperature water 11, the hot water is recovered and used through the hot water recovery pipe 12, the tail gas after the heat is absorbed enters the tail gas inlet pipe 6 through the curved radiating pipe 5 and then enters the drainage pipe 7 through the tail gas inlet pipe 6, the tail gas in the drainage pipe 7 enters the gas guide pipe 8, the tail gas generated by electrolysis and sodium bicarbonate in the tail gas treatment tank 3 are subjected to neutralization reaction to absorb water-soluble acidic substances in the tail gas, the water-insoluble acidic substances are doped in the tail gas and enter the tail gas absorption treatment tank 17 upwards, the water-insoluble acidic substances are adsorbed through the activated carbon layer and the filter cotton layer, so that the tail gas discharged from the tail gas discharge pipe 18 reaches the safe discharge standard, a partition area is conveniently formed at the upper end of the inside of the electrolysis tank 1 by arranging the partition plate 19 and the air inlet port 21, the tail gas can only enter through the air inlet port 21, the guide fan 20 is arranged to accelerate the air flow above the partition plate 19, so that the tail gas is accelerated to enter the tail gas recovery pipe 4 under the action of negative pressure of air flow, the tail gas recovery utilization efficiency is improved, under the driving action of the guide fan 14, the drainage fan 14 drives the rotation shaft of the drainage rotation shaft 15, and the drainage rotation shaft 15 drives the drainage fan wheel 16 to rotate, so that negative pressure is formed in the drainage tube 7 under the rotation action of the drainage fan wheel 16, and the tail gas is accelerated to enter the drainage tube 7.
The present utility model is not limited to the preferred embodiments, but the patent protection scope of the utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings are included in the scope of the utility model.
Claims (6)
1. The utility model provides a do benefit to waste heat utilization equipment of carbon neutralization electrolysis flue gas which characterized in that: the device comprises an electrolytic tank (1), a waste heat recovery tank (2) and a tail gas treatment tank (3), wherein the top end of the electrolytic tank (1) is provided with a tail gas recovery pipe (4) in a penetrating manner, one end of the tail gas recovery pipe (4) away from the electrolytic tank (1) and a curved radiating pipe (5), one end of the curved radiating pipe (5) away from the tail gas recovery pipe (4) is fixedly connected with a tail gas inlet pipe (6), the tail gas inlet pipe (6) is fixedly connected with a drainage pipe (7), and the lower end of the drainage pipe (7) is fixedly connected with a gas guide pipe (8);
the heat-insulating cotton heat-insulating device is characterized in that a heat-insulating pipeline (9) is sleeved outside the tail gas recovery pipe (4), heat-insulating cotton (10) is filled in a cavity between the heat-insulating pipeline (9) and the tail gas recovery pipe (4), the interior of the waste heat recovery tank (2) is loaded with hot water (11), a hot water recovery pipe (12) is arranged in the interior of the waste heat recovery tank (2) in a penetrating way, and a part of the curved radiating pipe (5) which is about four fifths of the part is immersed in normal-temperature water (11);
the utility model discloses a tail gas treatment tank, including tail gas treatment tank (3), drainage motor support frame (13) of outside upper surface fixedly connected with, drainage motor support frame (13) and drainage motor (14) fixed connection, the output shaft and the drainage pivot (15) fixed connection of drainage motor (14), the outside fixedly connected with drainage fan wheel (16) of drainage pivot (15), the inside upper end of tail gas treatment tank (3) is provided with tail gas absorption treatment tank (17), the upper end fixedly connected with tail gas emission pipe (18) of tail gas absorption treatment tank (17).
2. The waste heat utilization device for facilitating carbon neutralization of electrolysis flue gas according to claim 1, wherein: the electrolytic cell is characterized in that a partition plate (19) is arranged at the upper end of the inside of the electrolytic cell (1), an air inlet port (21) is formed in the upper surface of the partition plate (19), and a guide fan (20) is fixedly connected to the upper surface of the partition plate (19) close to the tail gas recovery pipe (4).
3. The waste heat utilization device for facilitating carbon neutralization of electrolysis flue gas according to claim 1, wherein: the lower end of the air duct (8) is L-shaped, and a plurality of air holes are uniformly formed in the outer part of the air duct (8).
4. The waste heat utilization device for facilitating carbon neutralization of electrolysis flue gas according to claim 1, wherein: the tail gas absorption treatment tank (17) is composed of five groups of active carbon layers and four groups of filter cotton layers, and the active carbon layers and the filter cotton layers are arranged in a staggered mode.
5. The waste heat utilization device for facilitating carbon neutralization of electrolysis flue gas according to claim 1, wherein: the tail gas treatment tank (3) is internally filled with a weak alkaline solution, and the weak alkaline solution is sodium bicarbonate solution.
6. The waste heat utilization device for facilitating carbon neutralization of electrolysis flue gas according to claim 1, wherein: the upper surface of the tail gas treatment tank (3) is fixedly connected with a guide block (22), and the drainage rotating shaft (15) is rotationally connected inside a rotating hole of the guide block (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222786533.XU CN219015051U (en) | 2022-10-22 | 2022-10-22 | Waste heat utilization device beneficial to carbon neutralization electrolysis flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222786533.XU CN219015051U (en) | 2022-10-22 | 2022-10-22 | Waste heat utilization device beneficial to carbon neutralization electrolysis flue gas |
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| Publication Number | Publication Date |
|---|---|
| CN219015051U true CN219015051U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222786533.XU Active CN219015051U (en) | 2022-10-22 | 2022-10-22 | Waste heat utilization device beneficial to carbon neutralization electrolysis flue gas |
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| CN (1) | CN219015051U (en) |
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2022
- 2022-10-22 CN CN202222786533.XU patent/CN219015051U/en active Active
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