Odor purification device for industrial hazardous waste treatment

Abstract

The utility model belongs to the technical field of peculiar smell and flue gas purification equipment, and particularly discloses a peculiar smell purification device for industrial hazardous waste treatment, which comprises an air inducing pipe, an air supply header pipe, an alkali washing mechanism, an activated carbon adsorption box and a primary fan, an air suction port and an air outlet of the secondary fan are communicated with the induced air pipe and the air supply header pipe respectively, a gas inlet pipeline is communicated between the air supply header pipe and the alkali washing mechanism, a gas outlet of the alkali washing mechanism and an inlet of the activated carbon adsorption box are communicated with a gas outlet pipeline, and an outlet of the activated carbon adsorption box is communicated with an air suction port of the primary fan. And an air outlet of the primary fan is communicated to a chimney. According to the utility model, the air inducing pipe is arranged between the material pit and the crushing room, peculiar smell gas is fed into the air supply header pipe by virtue of the secondary fan, the peculiar smell gas passes through the air supply header pipe and then is subjected to alkali washing purification of the alkali washing mechanism and filtering operation of the activated carbon adsorption box, and the purified and filtered gas is introduced into the chimney from the air outlet of the primary fan and is discharged into the atmosphere.

Description

Technical Field

[0001] The utility model relates to the technical field of odor and smoke purification equipment, and in particular to an odor purification device for industrial hazardous waste treatment. Background Art

[0002] Hazardous waste, referred to as hazardous waste, refers to solid waste that is listed in the national hazardous waste list or identified as having hazardous characteristics according to the national hazardous waste identification standards and identification methods. Hazardous waste needs to be strictly treated before it can be discharged. Hazardous waste treatment refers to the safe and environmentally friendly treatment of hazardous waste to prevent environmental pollution and human health risks.

[0003] At present, hazardous waste is transported to the temporary storage warehouse in the hazardous waste treatment plant in the form of ton bags or barrels. Part of it is sent to the material pit for processing. After the hazardous waste is poured into the material pit with barrels, it is sent to the crushing room for crushing and then sent to the material pit. Finally, the hazardous waste in the material pit is sent to the incineration building for incineration.

[0004] However, the hazardous waste piled up in the material pit will volatilize a certain amount of foul-smelling gas. In addition, in the hazardous waste crushing room on one side of the material pit, not only smoke and gas will be produced during the crushing process, but also foul-smelling gas will be emitted, polluting the environment. The unpleasant smell will affect the work of the workers. Utility Model Content

[0005] The utility model aims to provide an odor purification device for industrial hazardous waste treatment to solve the problem that hazardous waste accumulated in the material pits in the existing hazardous waste treatment plants volatilizes malodorous gases, and that malodorous gases also exist in the hazardous waste crushing room, and the unpleasant odor affects the work of the staff.

[0006] To achieve the above-mentioned purpose, the basic scheme provided by the utility model is: an odor purification device for industrial hazardous waste treatment, comprising an induced draft duct, an air supply main duct, an alkali washing mechanism, an activated carbon adsorption box and a primary air fan, a secondary air fan is provided on the side of the air supply main duct close to the crushing room and the material pit, the air suction port and the air outlet of the secondary air fan are respectively connected to the induced draft duct and the air supply main duct, a gas inlet pipeline is connected between the air supply main duct and the alkali washing mechanism, a gas outlet pipeline is connected between the air outlet of the alkali washing mechanism and the inlet of the activated carbon adsorption box, the outlet of the activated carbon adsorption box is connected to the air suction port of the primary air fan, and the air outlet of the primary air fan is connected to the chimney.

[0007] The principle and beneficial effect of the utility model are as follows: the utility model arranges induced draft ducts in the material pit and the crushing room, and respectively arranges secondary fans, with the help of the secondary fans the odorous gas is sent into the air supply main pipe, and under the suction force of the primary fan, after passing through the air supply main pipe, it undergoes alkali washing purification of the alkali washing mechanism and filtering operation of the activated carbon adsorption box, the purified and filtered gas meets the emission standards, and is led from the air outlet of the primary fan to the chimney and discharged into the atmosphere, thereby completing the operation of odorous gas purification treatment.

[0008] Solution 2, which is the preferred basic solution, the alkali washing mechanism includes an alkali washing tower, a filtering unit for filtering gas and a circulation unit, the flue gas inlet pipeline is connected to the vicinity of the bottom of the alkali washing tower, the alkali washing tower is connected to an alkali liquid inlet pipeline and a water inlet pipeline, the alkali liquid inlet pipeline in the alkali washing tower is connected to a plurality of nozzles, one side of the alkali washing tower is connected to a water outlet pipe, and the alkali liquid inlet pipeline and the water outlet pipeline are respectively connected to the circulation unit;

[0009] An alkali washing mechanism is provided to carry out alkali washing on the acidic gas. The gas enters from the bottom of the alkali washing tower through the gas inlet pipeline. Alkaline liquids such as sodium hydroxide are introduced into the alkali washing tower through the alkali liquid inlet pipeline. The gas is sprayed with alkali washing by a nozzle. The alkaline liquid can be recycled through the circulation unit, and the gas is purified by alkali washing through the filtration unit and the spraying of the alkaline liquid.

[0010] Solution 3, which is a preferred solution of Solution 2, the filtration unit comprises a first orifice plate and a second orifice plate, the first orifice plate and the second orifice plate are respectively fixed to the inside of the alkali washing tower, and the first orifice plate and the second orifice plate are respectively provided with fillers for adsorbing impurities;

[0011] The first orifice plate and the second orifice plate are provided to increase the residence time of the gas in the alkali washing tower, and the gas is better purified by providing fillers to achieve a good purification effect.

[0012] Solution 4, which is a preferred embodiment of Solution 3, the circulation unit comprises a circulation box and a circulation pump, the inlet of the circulation pump is connected to the circulation box, the outlet of the circulation pump is connected to the alkali solution inlet pipeline with a first circulation pipeline, the first circulation pipeline is connected to the alkali washing tower with a second circulation pipeline, the second circulation pipeline in the alkali washing tower is connected to a plurality of nozzles identical to those on the alkali solution inlet pipeline, and the circulation box is connected to a drainage pipeline;

[0013] When the circulation pump is turned on, the alkaline proportioning liquid in the circulation box is sent to the alkali washing tower through the first circulation pipeline and the second circulation pipeline for spraying, thereby realizing recycling.

[0014] Option 5 is a preferred option of Option 4. The circulation box is connected to a liquid level meter. By setting the liquid level meter, the operator can detect the liquid level in the circulation box. When the liquid level in the circulation box reaches the set maximum liquid level value, the operator stops introducing the sodium hydroxide alkaline solution into the alkali washing tower through the alkali solution inlet pipeline.

[0015] Option six is ​​a preferred option of option four. A pH meter is connected to the circulation box. By setting up the pH meter, the operator can detect the pH value of the circulating liquid in the circulation box at any time. During use, the staff will regularly detect the iodine value of the activated carbon and regularly replace the activated carbon according to the iodine value to maintain a good filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of an odor purification device for industrial hazardous waste treatment according to the utility model;

[0017] Figure 2 The utility model is a schematic diagram of the internal structure of an alkaline washing mechanism in an odor purification device for industrial hazardous waste treatment. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below through specific implementation methods:

[0019] The figure marks in the drawings of the specification include: 1. induced draft duct; 2. primary fan; 3. main air supply duct; 4. gas inlet pipeline; 5. alkali washing tower; 6. gas outlet pipeline; 7. activated carbon adsorption box; 8. secondary fan; 9. alkali solution inlet pipeline; 10. second circulation pipeline; 11. nozzle; 12. second orifice plate; 13. packing; 14. first orifice plate; 15. water outlet pipeline; 16. circulation box; 17. water pump; 18. first circulation pipeline; 19. pH meter; 20. liquid level meter; 21. water inlet pipeline; 22. drainage pipeline.

[0020] like Figure 1 and Figure 2 As shown: an odor purification device for industrial hazardous waste treatment, comprising an induced draft duct 1, an air supply main duct 3, an alkali washing mechanism, an activated carbon adsorption box 7 and a primary fan 2, a secondary fan 8 is arranged on one side of the air supply main duct 3, the air suction port of the secondary fan 8 is connected to the induced draft duct 1, the number of induced draft ducts 1 is set according to the number of material pits and crushing rooms on site, the air outlet of the induced draft fan is connected to the air supply main duct 3, the end of the air supply main duct 3 away from the alkali washing mechanism is connected to a temporary storage for storing hazardous waste, the secondary fan 8 extracts the gas from the material pit and the crushing room through the induced draft duct 1 and sends it into the air supply main duct 3, the diameter of the induced draft duct 1 is 400 mm, the diameter of the air supply main duct 3 is 550 mm, and a gas inlet pipeline 4 is connected between the air supply main duct 3 and the alkali washing mechanism.

[0021] The alkali washing mechanism includes an alkali washing tower 5, a filtering unit and a circulation unit. The filtering unit includes a first orifice plate 14 and a second orifice plate 12. The circulation unit includes a circulation box 16 and a circulation pump 17. The gas inlet of the alkali washing tower 5 is arranged near the bottom of the alkali washing tower 5. The gas inlet pipeline 4 is connected to the gas inlet of the alkali washing tower 5. The first orifice plate 14 and the second orifice plate 12 are respectively fixedly connected to the inner wall of the alkali washing tower 5. The first orifice plate 14 and the second orifice plate 12 are respectively provided with fillers 13. The fillers 13 are used to adsorb impurities in the gas. The adsorbent as the filler 13 is filled in a container with good air permeability such as a polyhedral ball or a Boolean ring.

[0022] The alkali washing tower 5 is connected with an alkali liquid inlet pipeline 9 and a water inlet pipeline 21. The alkali liquid inlet pipeline 9 is passed with an alkaline sodium hydroxide solution. The alkaline sodium hydroxide solution and the water of the water inlet pipeline 21 are proportioned in the alkali washing tower 5 according to the ratio set by the operator, and are mixed in the alkali washing tower 5 to form an alkaline proportioning liquid. The circulation box 16 is arranged on one side of the alkali washing tower 5. The inlet of the circulation box 16 and the water outlet of the alkali washing tower 5 are connected with the water outlet pipeline 15. The circulation pump 17 is fixedly connected to the circulation box 16. The inlet of the circulation pump 17 is connected to the circulation box 16. The circulation box 16 is connected with a liquid level meter 20 and a pH meter 19 for detecting the pH value of the alkaline proportioning liquid. The bottom of the circulation box 16 is connected with a drainage pipeline 22.

[0023] A first circulation pipeline 18 is connected between the outlet of the circulation pump 17 and the alkali liquid inlet pipeline 9, and a second circulation pipeline 10 is connected between the first circulation pipeline 18 and the alkali washing tower 5. The alkali liquid inlet pipeline 9 and the second circulation pipeline 10 located in the alkali washing tower 5 are respectively connected to a plurality of nozzles 11 for spraying; the alkali liquid inlet pipeline 9 located in the alkali washing tower 5 is higher than the second orifice plate 12, and the second circulation pipeline 10 is located in the alkali washing tower 5 between the first orifice plate 14 and the second orifice plate 12. A gas outlet pipeline 6 is connected between the gas outlet at the top of the alkali washing tower 5 and the activated carbon adsorption box 7, and the outlet of the activated carbon adsorption box 7 is connected to the air intake of the primary fan 2, and the air outlet of the primary fan 2 is connected to the chimney.

[0024] The implementation method of this embodiment is as follows: when in use, the primary fan 2 is in a normally open state and extracts the odorous gas from the pile of materials in the temporary storage for purification. The operator turns on the secondary fan 8 near the induced draft duct 1 in the material pit and the crushing room, and the odorous gas is extracted and sent into the air supply main 3 through the secondary fan 8. Alkaline solutions such as sodium hydroxide are introduced into the alkali washing tower 5 through the alkali solution inlet pipeline 9, and water and alkaline solution are introduced into the alkali washing tower 5 through the water inlet pipeline 21 to form an alkaline proportioning liquid.

[0025] The alkaline proportioning liquid is sprayed down through the nozzle 11 on the alkali liquid inlet pipeline 9 to form an alkaline water curtain. The odorous gas enters the alkali washing tower 5 through the air supply main pipe 3 and the gas inlet pipeline 4. The odorous gas moves from bottom to top and passes through the first orifice plate 14 and the second orifice plate 12 in sequence. The alkaline proportioning liquid in the alkali washing tower 5 is discharged from the water outlet pipeline 15 into the circulation box 16. The water and the alkaline solution are further mixed fully. When the liquid level meter 20 measures that the liquid level in the circulation box 16 reaches the set maximum liquid level value, the alkali liquid inlet pipeline 9 is stopped. Alkaline liquid is passed into the alkali washing tower 5, and the circulation pump 17 is turned on. The liquid in the circulation box 16 is sent back into the alkali washing tower 5 through the first circulation pipeline 18 and the second circulation pipeline 10 respectively, and the gas is sprayed with the nozzle 11 to realize the recycling of the alkaline proportioning liquid; when the pH meter 19 measures that the liquid in the circulation box 16 is weakly acidic or acidic, the liquid in the circulation box 16 is discharged through the drainage pipeline 22, and the alkaline liquid inlet pipeline 9 continues to be used to pass alkaline liquid into the alkali washing tower 5 to maintain a good alkali washing effect.

[0026] The gas purified by alkali washing in the alkali washing tower 5 is discharged from the gas outlet pipeline 6 to the activated carbon adsorption box 7, and the impurities in the gas are further adsorbed by the activated carbon adsorption box 7 to avoid clogging and damage to the primary fan 2. During use, the staff regularly tests the iodine value of the activated carbon and replaces the activated carbon regularly according to the iodine value to maintain a good filtering effect; then the filtered gas is sent to the chimney through the primary fan 2 for discharge.

[0027] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An odor purification device for industrial hazardous waste treatment, characterized in that: The invention comprises an induced draft pipe (1), an air supply main pipe (3), an alkali washing mechanism, an activated carbon adsorption box (7) and a primary fan (2); a secondary fan (8) is provided on one side of the air supply main pipe (3) close to the crushing room and the material pit; an air intake and an air outlet of the secondary fan (8) are respectively connected to the induced draft pipe (1) and the air supply main pipe (3); a gas inlet pipeline (4) is connected between the air supply main pipe (3) and the alkali washing mechanism; a gas outlet pipeline (6) is connected between the air outlet of the alkali washing mechanism and the inlet of the activated carbon adsorption box (7); the outlet of the activated carbon adsorption box (7) is connected to the air intake of the primary fan (2); and the air outlet of the primary fan (2) is connected to a chimney.

2. The odor purification device for industrial hazardous waste treatment according to claim 1 is characterized in that: The alkali washing mechanism comprises an alkali washing tower (5), a filtering unit for filtering gas, and a circulation unit. The gas inlet pipeline (4) is connected to the vicinity of the bottom of the alkali washing tower (5). The alkali washing tower (5) is connected to an alkali liquid inlet pipeline (9) and a water inlet pipeline (21). The alkali liquid inlet pipeline (9) located in the alkali washing tower (5) is connected to a plurality of nozzles (11). One side of the alkali washing tower (5) is connected to a water outlet pipeline (15). The alkali liquid inlet pipeline (9) and the water outlet pipeline (15) are respectively connected to the circulation unit.

3. The odor purification device for industrial hazardous waste treatment according to claim 2 is characterized in that: The filtering unit comprises a first orifice plate (14) and a second orifice plate (12), wherein the first orifice plate (14) and the second orifice plate (12) are respectively fixed to the inside of the alkali washing tower (5), and fillers (13) for adsorbing impurities are respectively laid on the first orifice plate (14) and the second orifice plate (12).

4. The odor purification device for industrial hazardous waste treatment according to claim 3 is characterized in that: The circulation unit comprises a circulation box (16) and a circulation pump (17); the inlet of the circulation pump (17) is connected to the circulation box (16); the outlet of the circulation pump (17) is connected to an alkali liquid inlet pipeline (9) and a first circulation pipeline (18); a second circulation pipeline (10) is connected between the first circulation pipeline (18) and an alkali washing tower (5); a plurality of nozzles (11) identical to those on the alkali liquid inlet pipeline (9) are connected to the second circulation pipeline (10) located in the alkali washing tower (5); and the circulation box (16) is connected to a drainage pipeline (22).

5. The odor purification device for industrial hazardous waste treatment according to claim 4 is characterized in that: The circulation box (16) is connected to a liquid level meter (20).

6. The odor purification device for industrial hazardous waste treatment according to claim 4 is characterized in that: The circulation box (16) is connected to a pH meter (19).

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