Flue gas dedusting, desulfurizing and purifying device for rotary kiln
By designing a rotary kiln flue gas dust removal and desulfurization purification device including a primary filter box, a water tank and a filter box, the problem of poor filtration and desulfurization effects in flue gas treatment in the prior art is solved, and efficient flue gas purification effect is achieved .
Patent Information
- Application Number
- CN202421040917.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-14
AI Technical Summary
In the flue gas treatment of rotary kilns, the filter structure is single and multiple filtration cannot be achieved, resulting in poor filtration and desulfurization effects, affecting the flue gas purification effect.
A rotary kiln flue gas dust removal and desulfurization purification device including a primary filter box, a water tank and a filter box is designed. The initial filter box is initially filtered through a filter mesh, and the water tank mixes the dust and impurities in the flue gas through the spray head to improve the filtration effect; the filter box is secondary filtered and purified through the zeolite adsorption layer, sponge filter layer and activated carbon filter layer. At the same time, efficient desulfurization is achieved through the mixing of the flue gas heater and sodium bicarbonate powder.
Multiple filtration and efficient desulfurization of flue gas are achieved, which significantly improves the flue gas treatment effect and ensures the purification quality of flue gas.
Smart Images
Figure CN222468518U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flue gas purification, in particular to a rotary kiln flue gas dust removal, desulfurization and purification device. Background Art
[0002] With the continuous development of modern industry, more and more attention has been paid to the control of industrial pollution. Common industrial pollution includes waste gas, waste water and waste residue. For example, the harmful substances such as SO2 produced in the combustion process of industrial boilers, if not strictly and effectively desulfurized and discharged into the atmosphere, will irritate the human respiratory tract. After being inhaled into the blood, it will have toxic side effects on the whole body, and in severe cases, it will induce cancer. According to statistics, the total amount of SO2 emitted into the atmosphere in my country in 2011 was 11.141 million tons, of which 80% came from combustion;
[0003] In the prior art, rotary kiln flue gas treatment usually adopts the method of direct filtration with a filter to purify dust impurities in the flue gas. The filtration structure is single and impurities in the flue gas cannot be filtered multiple times. The filtration effect is not good and the desulfurization effect is not good, which affects the flue gas purification effect. Utility Model Content
[0004] The utility model aims to provide a rotary kiln flue gas dust removal and desulfurization purification device, which has the characteristics of good desulfurization effect, high desulfurization efficiency, good desulfurization effect and good flue gas treatment effect.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary kiln flue gas dust removal, desulfurization and purification device, comprising a primary filter box and a water tank, a filter box is arranged on one side of the water tank, the primary filter box, the water tank and the filter box are connected by a pipeline, the other side of the filter box is connected to a flue gas heater through a smoke guide pipe, a fan is arranged on the outer wall of the smoke guide pipe, a mixing chamber and a sodium bicarbonate powder bin are arranged on the other side of the flue gas heater, the flue gas heater and the mixing chamber are connected by a pipeline, a powder outlet pipeline is connected between the sodium bicarbonate powder bin and the mixing chamber, and one side of the mixing chamber is connected to a flue gas desulfurization reactor through a pipeline.
[0006] In order to mix water with dust impurities in the flue gas, as a preferred rotary kiln flue gas dust removal, desulfurization and purification device of the utility model, a plurality of nozzles are arranged at the inner top of the water tank, a water pump is installed on the top of the water tank, and the water pump is connected to the plurality of nozzles.
[0007] In order to improve the filtering effect of flue gas, as a preferred rotary kiln flue gas dust removal, desulfurization and purification device of the utility model, the interior of the filter box is provided with a zeolite adsorption layer, a sponge filter layer and an activated carbon filter layer in sequence from top to bottom.
[0008] In order to filter the sundries and large particles of impurities in the flue gas, as a preferred rotary kiln flue gas dust removal, desulfurization and purification device of the utility model, a filter is arranged inside the primary filter box.
[0009] For smoke intake and exhaust, as a preferred rotary kiln flue gas dust removal, desulfurization and purification device of the utility model, the side of the primary filter box away from the water tank is connected to a smoke intake pipe, and the outer wall of the flue gas desulfurization reactor is connected to a smoke exhaust pipe.
[0010] In order to facilitate drainage, as a preferred rotary kiln flue gas dust removal, desulfurization and purification device of the utility model, a drainage pipe is connected to the lower part of the outer wall of the water tank.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] Start the fan, and the smoke from the rotary kiln enters the primary filter box through the smoke inlet pipe, and the dirt and large particles in the smoke are filtered through the filter, so as to filter the smoke. Then the smoke enters the water tank, and the water pump is connected to the external water source. Water is sprayed through multiple nozzles, so that the water and dust impurities in the smoke are mixed to improve the filtering effect. The smoke is further introduced into the filter box, and the particles of different sizes in the smoke are filtered twice in turn through the zeolite adsorption layer, the sponge filter layer and the activated carbon filter layer, and the harmful substances are adsorbed by the activated carbon filter layer, so that the smoke is fully filtered and purified, and the filtering effect is good;
[0013] The purified flue gas enters the flue gas heater for heating and then is introduced into the mixing chamber, while the sodium bicarbonate powder in the sodium bicarbonate powder bin is introduced into the mixing chamber through the powder outlet pipe, so that the heated flue gas and the sodium bicarbonate powder are fully mixed, and finally enters the flue gas desulfurization reactor for desulfurization, with good desulfurization effect. The flue gas is heated by the flue gas heater to increase the temperature of the flue gas, thereby activating the activity of the sodium bicarbonate powder, ensuring the desulfurization efficiency, good desulfurization effect and excellent flue gas treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 This is the internal structure diagram of the water tank of the utility model;
[0016] Figure 3 This is the internal structure diagram of the filter box of the utility model;
[0017] Figure 4 This is the internal structure diagram of the primary filter box of the utility model.
[0018] In the figure: 1. primary filter box; 2. water tank; 3. filter box; 4. flue gas heater; 5. smoke guide pipe; 6. fan; 7. mixing chamber; 8. sodium bicarbonate powder bin; 9. powder outlet pipe; 10. flue gas desulfurization reactor; 11. nozzle; 12. water pump; 13. zeolite adsorption layer; 14. sponge filter layer; 15. activated carbon filter layer; 16. filter; 17. smoke inlet pipe; 18. smoke exhaust pipe; 19. drain pipe. DETAILED DESCRIPTION
[0019] See also Figures 1 to 4 A rotary kiln flue gas dust removal, desulfurization and purification device comprises a primary filter box 1 and a water tank 2, a filter box 3 is arranged on one side of the water tank 2, the primary filter box 1, the water tank 2 and the filter box 3 are connected through a pipeline, the other side of the filter box 3 is connected to a flue gas heater 4 through a smoke guide pipe 5, a fan 6 is arranged on the outer wall of the smoke guide pipe 5, a mixing chamber 7 and a sodium bicarbonate powder bin 8 are arranged on the other side of the flue gas heater 4, the flue gas heater 4 and the mixing chamber 7 are connected through a pipeline, a powder outlet pipeline 9 is connected between the sodium bicarbonate powder bin 8 and the mixing chamber 7, and one side of the mixing chamber 7 is connected to a flue gas desulfurization reactor 10 through a pipeline.
[0020] In this embodiment: the fan 6 is started, the rotary kiln smoke enters the primary filter box 1 through the smoke inlet pipe 17, and the dirt and large particles in the smoke are filtered through the filter 16, so that the smoke is initially filtered, and then the smoke enters the water tank 2, the water pump 12 is connected to the external water source, and the water is sprayed through a plurality of nozzles 11, so that the water and the dust impurities in the smoke are mixed to improve the filtering effect, and the smoke is further introduced into the filter box 3, and the particles of different sizes in the smoke are filtered for a second time through the zeolite adsorption layer 13, the sponge filter layer 14 and the activated carbon filter layer 15 in turn, and the smoke is filtered through the filter 16. The activated carbon filter layer 15 absorbs harmful substances and fully filters and purifies the flue gas. The purified flue gas enters the flue gas heater 4 and is heated before being introduced into the mixing chamber 7. The sodium bicarbonate powder in the sodium bicarbonate powder bin 8 is introduced into the mixing chamber 7 through the powder outlet pipe 9, so that the heated flue gas and the sodium bicarbonate powder are fully mixed. Finally, the flue gas enters the flue gas desulfurization reactor 10 for desulfurization, and the desulfurization effect is good. The flue gas is heated by the flue gas heater 4 to increase the temperature of the flue gas, thereby activating the activity of the sodium bicarbonate powder and ensuring the desulfurization efficiency. Finally, the desulfurized flue gas is discharged through the exhaust pipe 18.
[0021] As a technical optimization solution of the utility model, a plurality of nozzles 11 are arranged at the inner top of the water tank 2 , and a water pump 12 is installed on the top of the water tank 2 , and the water pump 12 is connected to the plurality of nozzles 11 .
[0022] In this embodiment, the water pump 12 is connected to an external water source, and water is sprayed out through a plurality of nozzles 11, so that the water is mixed with dust and impurities in the flue gas to improve the filtering effect.
[0023] As a technical optimization solution of the utility model, a zeolite adsorption layer 13, a sponge filter layer 14 and an activated carbon filter layer 15 are sequentially arranged inside the filter box 3 from top to bottom.
[0024] In this embodiment: the particles of different sizes in the flue gas are filtered twice in sequence through the zeolite adsorption layer 13, the sponge filter layer 14 and the activated carbon filter layer 15, and the harmful substances are adsorbed by the activated carbon filter layer 15 to fully filter and purify the flue gas.
[0025] As a technical optimization solution of the present invention, a filter screen 16 is provided inside the primary filter box 1 .
[0026] In this embodiment, a filter screen 16 is disposed inside the primary filter box 1, and dirt and large particles of impurities in the flue gas are filtered through the filter screen 16, thereby performing primary filtration on the flue gas.
[0027] As a technical optimization solution of the utility model, a side of the primary filter box 1 away from the water tank 2 is connected to a smoke inlet pipe 17 , and an outer wall of the flue gas desulfurization reactor 10 is connected to a smoke exhaust pipe 18 .
[0028] In this embodiment, the smoke from the rotary kiln is introduced into the interior of the primary filter box 1 through the smoke inlet pipe 17 , and the filtered and purified smoke is discharged through the smoke exhaust pipe 18 .
[0029] As a technical optimization solution of the present utility model, a drainage pipe 19 is connected to the lower part of the outer wall of the water tank 2 .
[0030] In this embodiment: a drain pipe 19 is connected to the lower part of the outer wall of the water tank 2 to facilitate the discharge of waste water containing impurities and dirt.
[0031] Working principle: Start the fan 6, the rotary kiln smoke enters the primary filter box 1 through the smoke inlet pipe 17, and the dirt and large particles in the smoke are filtered through the filter 16, so as to filter the smoke. Then the smoke enters the water tank 2, the water pump 12 is connected to the external water source, and the water is sprayed through multiple nozzles 11, so as to mix the water and the dust impurities in the smoke to improve the filtering effect. The smoke is further introduced into the filter box 3, and the particles of different sizes in the smoke are filtered for the second time through the zeolite adsorption layer 13, the sponge filter layer 14 and the activated carbon filter layer 15 in turn, and then the smoke is filtered through the filter box 3. The activated carbon filter layer 15 absorbs harmful substances, fully filters and purifies the flue gas, and the purified flue gas enters the flue gas heater 4 for heating and then is introduced into the mixing chamber 7, while the sodium bicarbonate powder in the sodium bicarbonate powder bin 8 is introduced into the mixing chamber 7 through the powder outlet pipe 9, so that the heated flue gas and the sodium bicarbonate powder are fully mixed, and finally enters the flue gas desulfurization reactor 10 for desulfurization, with a good desulfurization effect. The flue gas is heated by the flue gas heater 4 to increase the temperature of the flue gas, thereby activating the activity of the sodium bicarbonate powder and ensuring the desulfurization efficiency. Finally, the desulfurized flue gas is discharged through the exhaust pipe 18.
[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A rotary kiln flue gas dust removal, desulfurization and purification device, comprising a primary filter box (1) and a water tank (2), characterized in that: A filter box (3) is provided on one side of the water tank (2); the primary filter box (1), the water tank (2) and the filter box (3) are connected via a pipeline; the other side of the filter box (3) is connected to a flue gas heater (4) via a smoke guide pipe (5); a fan (6) is provided on the outer wall of the smoke guide pipe (5); a mixing chamber (7) and a sodium bicarbonate powder bin (8) are provided on the other side of the flue gas heater (4); the flue gas heater (4) and the mixing chamber (7) are connected via a pipeline; a powder outlet pipeline (9) is connected between the sodium bicarbonate powder bin (8) and the mixing chamber (7); and one side of the mixing chamber (7) is connected to a flue gas desulfurization reactor (10) via a pipeline.
2. A rotary kiln flue gas dust removal, desulfurization and purification device according to claim 1, characterized in that: A plurality of nozzles (11) are arranged at the top of the interior of the water tank (2), a water pump (12) is installed at the top of the water tank (2), and the water pump (12) is connected to the plurality of nozzles (11).
3. A rotary kiln flue gas dust removal, desulfurization and purification device according to claim 1, characterized in that: The interior of the filter box (3) is provided with a zeolite adsorption layer (13), a sponge filter layer (14) and an activated carbon filter layer (15) in sequence from top to bottom.
4. A rotary kiln flue gas dust removal, desulfurization and purification device according to claim 1, characterized in that: A filter screen (16) is arranged inside the primary filter box (1).
5. The rotary kiln flue gas dust removal, desulfurization and purification device according to claim 1, characterized in that: The side of the primary filter box (1) away from the water tank (2) is connected to a smoke inlet pipe (17), and the outer wall of the flue gas desulfurization reactor (10) is connected to a smoke exhaust pipe (18).
6. A rotary kiln flue gas dust removal, desulfurization and purification device according to claim 1, characterized in that: A drainage pipe (19) is connected to the lower portion of the outer wall of the water tank (2).