Environment-friendly electroplating waste gas treatment tower

Abstract

The utility model relates to an environment-friendly electroplating waste gas treatment tower, which comprises a particle separation mechanism, a spray tower and a condensation filtering mechanism, the particle separation mechanism adopts the design of a multi-stage cyclone separator, the trapping efficiency is improved, at least two spray areas are arranged in the spray tower, a plurality of atomization nozzles are arranged in each spray area, and the condensation filtering mechanism is arranged on the spray tower. The lower part of the spray tower is also provided with a filler area, the purification efficiency is improved, the spray tower is externally connected with a circulating device, the spray liquid can be recycled, the waste gas spray tower disclosed by the utility model can be used for effectively treating electroplating waste gas, the waste gas cannot pollute the environment after being discharged, and the spray tower is relatively simpler in structure and relatively lower in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment tower technical field, concretely is environmental protection electroplating waste gas treatment tower. BACKGROUND

[0002] A large amount of waste gas such as acid waste gas, nitrogen oxide waste gas and various different types and different concentration waste gas can be produced in the electroplating process, the traditional waste gas treatment method is to spray the waste gas through the waste gas spray tower and treat in the spraying solution by adding chemical solvent, so as to achieve the purpose of treatment, the existing waste gas spray tower is not complete for the treatment of waste gas, and long-term emission still affects the environment.

[0003] Therefore, it is necessary to design a treatment tower with higher treatment efficiency and lower cost. UTILITY MODEL CONTENT

[0004] In order to solve the above problems, the environmental protection electroplating waste gas treatment tower provided by the utility model has simple overall structure, improved treatment efficiency, good cost control and reduced use cost.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The environmental protection electroplating waste gas treatment tower comprises a particle separation mechanism, a spray tower and a condensation filtering mechanism, the particle separation mechanism is designed in a multi-stage cyclone separator, the capture efficiency is improved, at least two spray zones are arranged in the spray tower, a plurality of atomizing nozzles are arranged in each spray zone, a filler zone is further arranged at the lower part of the spray tower, the purification efficiency is improved, a circulating device is connected to the outside of the spray tower, the spray liquid can be recycled, the cost is saved, the condensation filtering mechanism comprises a condensation part and a filtering part in communication, an ultrasonic wave emitting head is arranged in the condensation part, water injection self-cleaning can be realized, and the internal airflow channel is an S-shaped channel, the filtering part is connected to the exhaust direction of the condensation part, and a plurality of filtering fillers are arranged in the filtering part.

[0007] Optionally, in an embodiment of the utility model, the spray zone is provided with spray pipes in star-shaped radial shape to realize full-angle coverage spraying.

[0008] Optionally, in an embodiment of the utility model, the gas inlet of the spray tower is connected with a ring distributor, the ring distributor is a ring pipe structure, a plurality of air holes are arranged on the upward part of the ring pipe structure to make the airflow uniformly enter the tower.

[0009] Optionally, in an embodiment of the utility model, the internal airflow channel of the condensation part is an S-shaped channel.

[0010] Optionally, in an embodiment of the present application, the condensing part is internally provided with a plurality of condensing pipes, and the condensing pipes are arranged in an up-and-down staggered manner to increase the contact time and contact area of the condensing pipes with the exhaust gas.

[0011] Optionally, in an embodiment of the present application, the gas inlet of the cyclone separator is in a spiral structure to reduce the vortex turbulence of the gas flow and improve the separation efficiency.

[0012] Optionally, in an embodiment of the present application, the inner wall surface of the cyclone separator is coated with a polyurethane coating to reduce the adhesion of particulate matters to the inner wall.

[0013] Optionally, in an embodiment of the present application, the filtering part is sequentially provided from top to bottom with inorganic fiber filter material, PTFE filter membrane and activated carbon for removing micro-particles, organic gas, volatile substances and water vapor.

[0014] Optionally, in an embodiment of the present application, the circulating device comprises a sedimentation tank, a circulating water pump and a connecting water pipe, the connecting water pipe is connected with the water outlet of the circulating water pump and the spraying pipe, the water inlet of the circulating water pump is connected with the upper part of the sedimentation tank, and the sedimentation tank is connected with the bottom of the spraying tower.

[0015] Optionally, in an embodiment of the present application, the particle separation mechanism is provided with two cyclone separators, and the gas flow rotation directions of the two cyclone separators are opposite.

[0016] Advantages of the present application

[0017] The environmental protection electroplating exhaust gas treatment tower has the following advantages: the tower is provided with a plurality of cyclone separators, which can separate the particles in the gas with high efficiency; the annular distributor is arranged in the spraying tower, so that the gas can be uniformly dispersed into the spraying tower; the spraying tower is provided with a plurality of spraying zones, and the spraying pipes of the spraying zones are distributed in a star-shaped radial manner to realize 360° coverage and ensure the treatment effect of the gas; the spraying tower is further connected with a circulating system, so that the spraying liquid can be recycled to reduce the use cost; the condensing and filtering mechanism is integrated into the spraying tower, which saves space and realizes more efficient treatment. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description.

[0019] Fig. 1 It is a whole structure schematic view of the embodiment 1 of the present application;

[0020] Fig. 2 It is a spraying pipe bottom view of the embodiment 1 of the present application;

[0021] Fig. 3 Figure 1 is a schematic diagram of the annular distributor of the present application;

[0022] The reference signs are explained as follows: particle separation mechanism 1, cyclone separator 101, treatment tower 2, spraying zone 201, annular distributor 202, packing zone 203, spraying pipe 204, atomizing nozzle 2041, sedimentation tank 205, circulating water pump 206, connecting pipe 207, condensation and filtration mechanism 3, condensation part 301, filtration part 302, condensation pipe 303. DETAILED DESCRIPTION

[0023] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined application purposes, the specific embodiments, structures, features and effects according to the present application are described in detail as follows in combination with the drawings and preferred embodiments. Embodiment 1

[0024] In order to improve the waste gas treatment efficiency, an environmental protection electroplating waste gas treatment tower 2 is designed, and the specific scheme is as follows:

[0025] As shown in Figs. 1-3 The environmental protection electroplating waste gas treatment tower 2 comprises a particle separation mechanism 1, a spraying tower and a condensation and filtration mechanism 3. The particle separation mechanism 1 is designed by using a multi-stage cyclone separator 101 to improve the trapping efficiency. At least two spraying zones 201 are arranged in the spraying tower. A plurality of atomizing nozzles 2041 are arranged in each spraying zone 201. A packing zone 203 is further arranged at the lower part of the spraying tower to improve the purification efficiency. A circulating device is connected to the spraying tower to recycle the spraying liquid, thereby saving the cost. The condensation and filtration mechanism 3 comprises a condensation part 301 and a filtration part 302 which are communicated. An ultrasonic wave emitting head is arranged in the condensation part 301 to realize water injection self-cleaning. The internal airflow channel is an S-shaped channel. The filtration part 302 is connected to the exhaust direction of the condensation part 301. A plurality of layers of filtration packing are arranged in the filtration part 302.

[0026] The spraying zone 201 is provided with spraying pipes 204 which are radially arranged in a star shape to realize full-angle coverage spraying. The packing zone 203 at the lower part of the spraying tower can be provided with corrugated packing to promote the contact between the waste gas and the spraying liquid and improve the absorption and purification efficiency of the gas.

[0027] In the present embodiment, two spraying zones 201 are arranged in the spraying tower. Six spraying pipes 204 are arranged in the same spraying zone 201. One spraying pipe 204 is arranged at every 60° on the same plane. The spraying pipes 204 can realize 360° coverage when spraying to ensure that the passing gas is sprayed.

[0028] The annular distributor 202 is connected to the gas inlet of the spraying tower. The annular distributor 202 is in the form of a ring pipe structure. A plurality of air holes are formed in the upward part of the ring pipe structure to make the airflow uniformly enter the tower.

[0029] The airflow passage inside the condensing part 301 is an S-shaped passage to slow down the speed of airflow flow, increase the contact area of waste gas with the condensing pipe 303, and improve the waste gas treatment efficiency. The lower surface of the S-shaped passage is provided with an inclined surface to facilitate the downward flow of condensed water.

[0030] A plurality of condensing pipes 303 are arranged inside the condensing part 301, and the condensing pipes 303 are arranged in an up-and-down staggered manner to increase the contact time and contact area of the condensing pipes 303 with the waste gas. The plurality of condensing pipes 303 are arranged along the S-shaped passage, and the plurality of condensing pipes 303 are connected in series. The water inlet end and the water outlet end of the condensing pipe 303 are connected with the outside to realize the supply of cold water.

[0031] The inlet of the cyclone separator 101 is provided with a spiral structure to reduce the vortex disorder of airflow and improve the separation efficiency.

[0032] The inner wall surface of the cyclone separator 101 is coated with a polyurethane coating to reduce the adhesion of particulate matter to the inner wall.

[0033] The filter part 302 is sequentially provided with inorganic fiber filter material, PTFE filter membrane, and activated carbon from top to bottom for removing small particles, organic gas, volatile substances, and water vapor. In this embodiment, the filter part 302 is provided as a box body, and the fillers inside are supported by trays. When replacement is needed, the corresponding tray can be taken out.

[0034] The activated carbon has a large specific surface area and strong adsorption capacity, which can effectively remove organic pollutants. It is particularly suitable for removing organic solvents and other volatile substances that may exist in electroplating waste gas; the PTFE filter membrane is used to further remove small particles and droplets in the waste gas, and has good filtering effect on micrometer-sized particles and water vapor. The corrosion resistance of the PTFE membrane makes it very effective in treating acidic or alkaline substances in electroplating waste gas; the inorganic fiber filter material is used to remove larger particles and some more difficult to remove pollutants, preventing particles and pollutants from entering the exhaust gas flow.

[0035] The circulating device includes a sedimentation tank 205, a circulating water pump 206, and a connecting water pipe. The connecting water pipe is connected with the water outlet end of the circulating water pump 206 and the spraying pipe 204, respectively. The water inlet end of the circulating water pump 206 is connected with the upper part of the sedimentation tank 205, and the sedimentation tank 205 is connected with the bottom of the spraying tower. In this embodiment, a partition is arranged between the sedimentation tank 205 and the bottom of the spraying tower, so that the connected part is in an S shape, ensuring that the spraying water in the sedimentation tank 205 flows relatively slowly, and improving the sedimentation efficiency.

[0036] The particle separation mechanism 1 is provided with two cyclone separators 101, the airflow rotation directions of the two cyclone separators 101 are opposite, the two cyclone separators 101 are connected in series, the air inlet of the first cyclone separator 101 is used for waste gas to enter, the air outlet of the first cyclone separator 101 is connected with the air inlet of the second cyclone separator 101, and the air outlet of the second cyclone separator 101 is connected with the air inlet of the spray tower. Through the multiple cyclone separators 101, the separation efficiency is improved, the burden of the subsequent treatment mechanism is reduced, and the overall processing capacity of the system is improved.

[0037] The processing flow is as follows:

[0038] After the waste gas enters the cyclone separator 101, the size particles in the waste gas are separated and removed through the treatment of the two-stage cyclone separator 101. The treated waste gas enters the spray tower, the spray pipe 204 in the spray tower starts to spray to cool the waste gas, and some harmful substances such as acid gas in the waste gas are removed through the spray liquid. The sprayed waste gas enters the condensation filtering mechanism 3 for condensation, further reduces the temperature of the waste gas, and is finally discharged after multiple filtration.

[0039] The waste gas spray tower of the scheme adopts multiple cyclone separators 101 to pretreat the waste gas and separate the size particles in the gas. The annular distributor 202 is arranged in the spray tower, so that the gas can be uniformly dispersed into the spray tower. The spray tower is provided with multiple spray zones 201, and the spray pipes 204 of the spray zones 201 are distributed in a star-shaped radial manner, which can realize 360° coverage and ensure the treatment effect of the gas. The spray tower is also connected with a circulating system, which can recycle the spray liquid and reduce the use cost. The post-treatment is connected with the condensation filtering mechanism 3, which integrates condensation and filtration together, saves space, realizes more efficient treatment, can treat complex waste gas generated from the electroplating process, and is suitable for different types of pollutants. Embodiment 2

[0040] In this embodiment, the structure of the treatment tower 2 is basically the same as that of embodiment 1, and the difference lies in that the different spray zones 201 are connected through pipelines, each spray zone 201 is provided with a separate water collecting pool and a circulating device, and different spray zones 201 can spray different spray liquids to remove different substances in the gas and play different treatment roles.

[0041] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. Therefore, the present application should be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims.

[0042] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the equivalent embodiments with the disclosed technical content without departing from the technical solution range of the present application. Any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical solution content of the present application shall still fall within the scope of the technical solution of the present application.

Claims

1. An environmental-friendly electroplating exhaust gas treatment tower, characterized in that, The utility model relates to a kind of waste gas purification device, including particle separation mechanism, spray tower and condensation filtering mechanism, the particle separation mechanism uses multistage cyclone separator design, improves trapping efficiency, at least two spray zones are equipped in the spray tower, multiple atomizing nozzles are equipped in each spray zone, the lower part of the spray tower is also equipped with filler zone, improve purification efficiency, the circulating device is connected outside the spray tower, can be recycled spray liquid, save cost, the condensation filtering mechanism includes the condensation part and filtering part, ultrasonic emission head is equipped in the condensation part, can realize water injection self-cleaning and internal airflow passage is S type passage, the filtering part is connected in the exhaust direction of the condensation part, multiple layers of filter fillings are equipped in the filtering part.

2. The environmentally friendly electroplating exhaust gas treatment tower according to claim 1, characterized in that: The spray zone is equipped with star-shaped radial spray pipes to achieve full-angle coverage spraying.

3. The environmentally friendly electroplating exhaust gas treatment tower according to claim 1, characterized in that: The gas inlet of the spray tower is connected with a ring distributor, which is a ring pipe structure.

4. The environmentally friendly electroplating exhaust gas treatment tower according to claim 1, characterized in that: The internal airflow passage of the condensation part is an S-shaped passage.

5. The environmentally friendly electroplating exhaust gas treatment tower according to claim 1, characterized in that: The condensation part is equipped with multiple condensing pipes arranged in an up-down staggered manner to increase the contact time and contact area of the condensing pipes with waste gas.

6. The environmentally friendly electroplating exhaust gas treatment tower according to claim 1, characterized in that: The gas inlet of the cyclone separator is a spiral structure to reduce vortex turbulence and improve separation efficiency.

7. The environmentally friendly electroplating exhaust gas treatment tower according to claim 1, characterized in that: The inner wall surface of the cyclone separator is coated with a polyurethane coating to reduce the adhesion of particulate matter to the inner wall.

8. The environmentally friendly electroplating exhaust gas treatment tower according to claim 1, characterized in that: The filtering part is sequentially composed of inorganic fiber filter material, PTFE filter membrane and activated carbon from top to bottom to remove small particles, organic gas, volatile substances and water vapor.

9. The environmentally friendly electroplating exhaust gas treatment tower according to claim 1, characterized in that: The circulating device includes a sedimentation tank, a circulating water pump and a connecting water pipe, the connecting water pipe is connected with the water outlet of the circulating water pump and the spray pipe respectively, the water inlet of the circulating water pump is connected with the upper part of the sedimentation tank, and the sedimentation tank is connected with the bottom of the spray tower.

10. The environmentally friendly electroplating exhaust gas treatment tower according to claim 1, characterized in that: The particle separation mechanism is equipped with two cyclone separators, and the airflow rotation directions of the two cyclone separators are opposite.

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