Industrial waste gas purification treatment device

Abstract

The utility model discloses an industrial waste gas purification treatment device and relates to the technical field of environmental protection. The device comprises a smoke exhaust pipe, a filter cartridge, a spraying tank, a liquid storage pool, an air injection spiral pipe, a heat exchange spiral pipe and a spraying disc, the exhaust end of the smoke exhaust pipe is communicated with and fixedly connected with the upper end of the filter cartridge, and the heat exchange spiral pipe is arranged in an inner cavity of the smoke exhaust pipe; two layers of stainless steel filter screens are fixed on the inner wall of the filter cartridge; a hollow spraying disc is fixed on the inner wall of the upper part of the spraying tank; and an air injection spiral pipe is arranged in the spraying tank below the spraying disc. By arranging the exhaust pipe, the heat exchange spiral pipe, the filter cartridge, the spraying tank, the spraying disc and the air injection spiral tank, the industrial waste gas treatment device solves the problems that high temperature contained in industrial waste gas cannot be recycled during treatment, streamlined waste gas treatment is lacked, and the spraying area, the air outlet amount and the air outlet position are unstable during spraying treatment of the waste gas; the processing efficiency is reduced; and the cost is increased.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection technology, and in particular relates to an industrial waste gas purification and treatment device. Background Technology

[0002] Industrial waste gas refers to gaseous waste generated during industrial production processes, including both production gases and exhaust gases. Its accounting scope includes waste gas components other than wastewater and solid waste generated in industrial production. Industrial waste gas can be classified into three types based on its composition: sulfur dioxide, soot, and particulate matter. These waste gases are harmful to us and need to be eliminated as much as possible. However, industrial waste gas cannot be directly emitted, as the pollutants it contains will pollute the atmospheric environment. Therefore, it must be purified to meet emission standards before it can be released. However, the following drawbacks still exist in the actual purification process:

[0003] 1. First of all, industrial waste gas usually contains high temperature after it is generated. Direct discharge is too wasteful. In order to meet the needs of environmental protection and energy conservation, as well as the concept of cost reduction and efficiency improvement, the high temperature of industrial waste gas should be utilized.

[0004] 2. Secondly, industrial waste gas treatment requires different treatment processes depending on the types of impurities it contains. A single treatment method cannot meet the requirements for purification treatment. For example, particulate matter has its own treatment method, and sulfides have their own treatment methods. The waste gas should be treated in a streamlined manner to meet the requirements of various pollutants.

[0005] 3. Finally, most waste gases require spray treatment. However, unstable waste gas intake and non-centered spray position can lead to waste of spray liquid, reduced treatment efficiency, and slowed treatment process. Utility Model Content

[0006] The purpose of this utility model is to provide an industrial waste gas purification and treatment device. By setting up an exhaust pipe, heat exchange spiral tube, filter cylinder, spray tank, spray plate, and jet spiral tank, it solves the problems of the inability to recover and utilize the high temperature contained in industrial waste gas, the lack of water-based waste gas treatment, and the instability of the spray area, gas output, and gas output position during the spray treatment, which leads to reduced treatment efficiency and increased costs.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model relates to an industrial waste gas purification and treatment device, comprising an exhaust pipe, a filter cylinder, a spray tank, a liquid storage tank, an air jet spiral pipe, a heat exchange spiral pipe, and a spray plate. The exhaust end of the exhaust pipe is connected and fixedly connected to the upper end of the filter cylinder, and a heat exchange spiral pipe is installed in the inner cavity of the exhaust pipe. Two layers of stainless steel filter screens are fixed on the inner wall of the filter cylinder. The filter cylinder above the stainless steel filter screens has a gravel layer, a sand layer, and an activated carbon layer distributed from top to bottom. The spray tank is located next to the filter cylinder, and a hollow spray plate is fixed on the inner wall of the upper part of the spray tank. An air jet spiral pipe is installed in the spray tank below the spray plate. A liquid storage tank is installed at the bottom of the spray tank.

[0009] Furthermore, an inlet pipe and an outlet pipe are respectively fixed through both ends of the heat exchange spiral tube. The inlet pipe extends upward through the side wall of the flue pipe and extends outward, while the outlet pipe extends downward through the side wall of the flue pipe and extends outward.

[0010] Furthermore, the upper end of the spray tank is provided with symmetrically distributed acid tanks and alkali tanks, and the top of each acid tank and alkali tank is screwed with a tank cap. The outer periphery of each acid tank and alkali tank is fixed with a bracket arranged in a ring array, and the bottom end of the bracket is fixed to the upper end of the spray tank.

[0011] Furthermore, the bottom ends of the acid tank and the alkali tank are also fixed with outlet pipes, the bottom end of which passes through the top of the spray tank and extends into the inner cavity of the spray plate for fixation. A valve is fixed on the outlet pipe between the acid tank, the alkali tank and the spray pipe.

[0012] Furthermore, the bottom of the spray disc is fixed with nozzles that are evenly distributed.

[0013] Furthermore, the sidewall of the jet spiral tube is provided with air holes arranged in a spiral linear array, and the end of the jet spiral tube near its center is a closed end, while the end away from its center is connected to an air inlet pipe. The end of the air inlet pipe away from the jet spiral tube passes through the sidewall of the spray tank and extends into the filter cylinder. The connection between the air inlet pipe and the filter cylinder is fixed, and the port of the air inlet pipe is lower than the position of the stainless steel filter screen.

[0014] Furthermore, the bottom end of the filter cylinder is screwed with a base, the bottom end of the spray tank is open, the top end of the liquid storage tank is open, and the cross-sectional dimension of the liquid storage tank is larger than the cross-sectional dimension of the spray tank. The outer periphery of the spray tank is fixed with legs arranged in a ring array, and the bottom of the legs is flush with the bottom surface of the liquid storage tank.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model solves the problem of the inability to recover and utilize the high temperature contained in industrial waste gas during treatment by setting up an exhaust pipe and a heat exchange spiral tube. The industrial waste gas to be treated is discharged from the exhaust pipe. At this time, the industrial waste gas contains a large amount of heat. At this time, cold water can be injected from the water inlet pipe, enter the heat exchange spiral tube, and then be discharged from the water outlet pipe, so that the cold water is heated up and at the same time, it carries away a large amount of heat from the waste gas. This achieves two goals at once, realizing both the recovery and utilization of waste heat and the cooling of waste gas.

[0017] 2. This utility model solves the problem of the lack of streamlined treatment for industrial waste gas due to the different types of pollutants requiring different treatment methods. By setting up a filter cylinder, spray tank, spray plate, and jet spiral tank, the industrial waste gas first enters the filter cylinder, passing through a layer of crushed stone, a layer of sand, a layer of activated carbon, and two layers of stainless steel filter screens to remove particulate impurities and avoid affecting subsequent processes. The waste gas is then injected into the jet spiral tube from the inlet pipe and sprayed out into the spray tank from the air hole. Utilizing the corresponding properties of the waste gas (containing sulfides means acidity), the corresponding acid or alkali tank is opened to inject the corresponding neutralizing liquid, which enters the spray plate and sprays downwards to neutralize the waste gas.

[0018] 3. This utility model solves the problem of unstable spray area, gas output, and gas outlet position during waste gas spraying treatment, which leads to reduced treatment efficiency and increased costs, by setting up a spray disc and a jet spiral tube. The spray disc has a disc-shaped structure that can cover all cross-sectional positions of the entire spray tank. The evenly arranged nozzles ensure that the sprayed treatment liquid (acid or alkali) is sprayed out more evenly and makes more comprehensive contact with the waste gas. The jet spiral tube has a planar spiral structure with evenly distributed air holes on its inner curved surface, which also ensures that the waste gas is discharged evenly. This makes the contact between the treatment liquid and the waste gas more sufficient, and will not waste the treatment liquid due to uneven waste gas distribution, nor will it reduce the purification efficiency due to uneven distribution of the treatment liquid. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 A three-dimensional view of an industrial waste gas purification and treatment device;

[0021] Figure 2 A cross-sectional view of an industrial waste gas purification and treatment device;

[0022] Figure 3 This is a cross-sectional view of the filter cartridge;

[0023] Figure 4 This is a cross-sectional view of the spray tank and its connection to the jet spiral pipe.

[0024] Figure 5 This is a structural diagram of a jet propeller tube;

[0025] Figure 6 This is a bottom view of the spray plate.

[0026] Figure label:

[0027] 1. Exhaust pipe; 2. Filter cartridge; 201. Base; 202. Crushed stone layer; 203. Sand and gravel layer; 204. Activated carbon layer; 205. Stainless steel filter screen; 3. Spray tank; 301. Alkali tank; 302. Acid tank; 303. Tank cover; 304. Support; 305. Support leg; 306. Liquid outlet pipe; 307. Valve; 4. Liquid storage tank; 5. Jet spiral pipe; 501. Air inlet pipe; 502. Air hole; 6. Heat exchange spiral pipe; 601. Water inlet pipe; 602. Water outlet pipe; 7. Spray plate; 701. Nozzle. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Please see Figure 1-6 As shown, this utility model is an industrial waste gas purification and treatment device, including a flue pipe 1, a filter cylinder 2, a spray tank 3, a liquid storage tank 4, a jet spiral pipe 5, a heat exchange spiral pipe 6, and a spray plate 7. The exhaust end of the flue pipe 1 is connected to the upper end of the filter cylinder 2 and fixedly connected. The heat exchange spiral pipe 6 is installed in the inner cavity of the flue pipe 1. Two layers of stainless steel filter screens 205 are fixed on the inner wall of the filter cylinder 2. The filter cylinder 2 above the stainless steel filter screens 205 has a gravel layer 202, a sand layer 203, and an activated carbon layer 204 distributed from top to bottom. The spray tank 3 is located next to the filter cylinder 2. A hollow spray plate 7 is fixed on the inner wall of the upper part of the spray tank 3. The spray spiral pipe 5 is installed in the spray tank 3 below the spray plate 7. The liquid storage tank 4 is installed at the bottom of the spray tank 3.

[0030] The exhaust pipe 1 is used to discharge industrial waste gas. It is equipped with a heat exchange spiral pipe 6 inside to remove heat from the waste gas, realize the recovery and utilization of waste heat, and reduce the temperature of the waste gas for subsequent treatment. The waste gas then enters the filter cylinder 2 and passes through the crushed stone layer 202, the sand and gravel layer 203, the activated carbon layer 204, and two layers of stainless steel filter screens 205 from top to bottom to remove particulate impurities inside and prevent particulate impurities from affecting the subsequent treatment process.

[0031] After being filtered, the exhaust gas enters the spray tank 3. The filtered exhaust gas is sprayed from the jet spiral tube 5 into the spray tank 3. At this time, the corresponding treatment liquid (the liquid in the acid tank 302 or the alkali tank 301) enters the spray plate 7, is sprayed downwards, and comes into contact with the exhaust gas discharged from the jet spiral tube 5 to achieve spray neutralization treatment. Finally, the neutralized liquid falls into the storage tank 4 for collection.

[0032] The heat exchange spiral tube 6 has an inlet pipe 601 and an outlet pipe 602 fixed at both ends respectively. The inlet pipe 601 extends upward through the side wall of the flue pipe 1 and extends outward. The outlet pipe 602 extends downward through the side wall of the flue pipe 1 and extends outward.

[0033] External cold water is introduced into the heat exchange spiral tube 6 through the inlet pipe 601 and then discharged from the outlet pipe 602 to achieve circulation. This utilizes the waste heat of the exhaust gas to heat the cold water while simultaneously reducing the temperature of the exhaust gas, achieving two goals at once and contributing to the treatment of exhaust gas.

[0034] The upper end of the spray tank 3 is provided with symmetrically distributed acid tank 302 and alkali tank 301, and the top of the acid tank 302 and alkali tank 301 are screwed with tank caps 303. The outer periphery of the acid tank 302 and alkali tank 301 are fixed with brackets 304 arranged in a ring array, and the bottom of the brackets 304 is fixed to the upper end of the spray tank 3.

[0035] The acid tank 302 stores acidic treatment solution, and the alkali tank 301 stores alkali treatment solution. The top of both tanks is sealed with a lid 303. Both the acid tank 302 and the alkali tank 301 are fixed to the spray tank 3 by a bracket 304, which facilitates the corresponding treatment according to the substances contained in the waste gas. This changes the conventional single treatment tank design, eliminating the need to change different treatment solutions. Only the corresponding acid tank 302 and alkali tank 301 need to be opened.

[0036] The bottom ends of acid tank 302 and alkali tank 301 are also fixed with outlet pipes 306. The bottom end of outlet pipe 306 passes through the top of spray tank 3 and extends into the inner cavity of spray plate 7 for fixation. A valve 307 is fixed on outlet pipe 306 between acid tank 302, alkali tank 301 and spray pipe.

[0037] When spraying is required, open valve 307 under alkaline tank 301 (valve 307 under acid tank 302 is closed) to allow the alkaline treatment liquid to exit through the outlet pipe 306 below and enter the spray plate 7.

[0038] The bottom of the spray plate 7 is fixed with nozzles 701 that are evenly distributed; the treatment liquid in the spray plate 7 is sprayed out from the nozzles 701 at its bottom.

[0039] The side wall of the jet spiral tube 5 is provided with air holes 502 arranged in a spiral linear array. The end of the jet spiral tube 5 near its center is a closed end, and the end away from its center is connected to an air inlet pipe 501. The end of the air inlet pipe 501 away from the jet spiral tube 5 passes through the side wall of the spray tank 3 and extends into the filter cylinder 2. The connection between the air inlet pipe 501 and the filter cylinder 2 is fixed. The port of the air inlet pipe 501 is lower than the position of the stainless steel filter screen 205.

[0040] After being filtered by the filter cartridge 2, the exhaust gas enters the jet spiral tube 5 through the air inlet pipe 501 and is evenly sprayed out through the air hole 502, making the distribution of exhaust gas more uniform.

[0041] The bottom of the filter cylinder 2 is screwed with a base 201. The bottom of the spray tank 3 is open, and the top of the liquid storage tank 4 is open. The cross-sectional dimension of the liquid storage tank 4 is larger than that of the spray tank 3. The outer periphery of the spray tank 3 is fixed with support legs 305 arranged in a ring array, and the bottom of the support legs 305 is flush with the bottom surface of the liquid storage tank 4. The bottom of the filter cylinder 2 is equipped with a detachable base 201, so that the stainless steel filter screen 205 and other internal components can be removed and replaced. The large-sized liquid storage tank 4 allows for the detection of the acidity or alkalinity of the liquid inside at any time to determine whether it can be discharged.

[0042] The specific working principle of this utility model is as follows: First, industrial waste gas is discharged from the exhaust pipe 1 and introduced into the filter cylinder 2. During this process, the industrial waste gas contains a large amount of heat. At this time, cold water can be injected from the water inlet pipe 601, enter the heat exchange spiral tube 6, and then be discharged from the water outlet pipe 602, so that the cold water is heated and at the same time, it carries away a large amount of heat from the waste gas. After the waste gas enters the filter cylinder 2, it passes through the crushed stone layer 202, the sand and gravel layer 203, the activated carbon layer 204, and two layers of stainless steel filter screens 205 from top to bottom to remove particulate impurities inside. The waste gas filtered by the filter cylinder 2 enters the spray nozzle from the air inlet pipe 501. Inside the spiral tube 5, the gas is evenly sprayed into the spray tank 3 through the air hole 502. Depending on the nature of the waste gas (containing sulfides means it is acidic), the corresponding acid tank 302 or alkali tank 301 is opened. If the waste gas contains sulfides, the valve 307 under the alkali tank 301 is opened (the valve 307 under the acid tank 302 is closed), so that the alkaline treatment liquid is discharged through the outlet pipe 306 below and enters the spray plate 7. The treatment liquid in the spray plate 7 is sprayed out from the nozzle 701 at its bottom and comes into contact with the waste gas discharged from the spiral tube 5 to achieve spray neutralization treatment. Finally, the neutralized liquid falls into the storage tank 4 for collection.

[0043] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. An industrial waste gas purification and treatment device, comprising a flue pipe (1), a filter cylinder (2), a spray tank (3), a liquid storage tank (4), a jet spiral pipe (5), a heat exchange spiral pipe (6), and a spray plate (7), characterized in that: The exhaust end of the flue pipe (1) is connected to the upper end of the filter cylinder (2) and fixedly connected. A heat exchange spiral tube (6) is provided in the inner cavity of the flue pipe (1). Two layers of stainless steel filter screens (205) are fixed on the inner wall of the filter cylinder (2). The filter cylinder (2) above the stainless steel filter screens (205) is provided with a gravel layer (202), a sand layer (203) and an activated carbon layer (204) distributed from top to bottom. The spray tank (3) is located next to the filter cylinder (2). A hollow spray plate (7) is fixed on the inner wall of the upper part of the spray tank (3). An air jet spiral tube (5) is provided in the spray tank (3) below the spray plate (7). A liquid storage tank (4) is provided at the bottom of the spray tank (3).

2. The industrial waste gas purification and treatment device according to claim 1, characterized in that: The heat exchange spiral tube (6) has an inlet pipe (601) and an outlet pipe (602) fixed at both ends respectively. The inlet pipe (601) extends upward through the side wall of the flue pipe (1) and extends outward. The outlet pipe (602) extends downward through the side wall of the flue pipe (1) and extends outward.

3. The industrial waste gas purification and treatment device according to claim 1, characterized in that: The upper end of the spray tank (3) is provided with symmetrically distributed acid tank (302) and alkali tank (301), and the top of the acid tank (302) and alkali tank (301) are screwed with tank caps (303). The outer periphery of the acid tank (302) and alkali tank (301) is fixed with brackets (304) arranged in a ring array, and the bottom end of the brackets (304) is fixed to the upper end of the spray tank (3).

4. The industrial waste gas purification and treatment device according to claim 3, characterized in that: The bottom ends of the acid tank (302) and the alkali tank (301) are also fixed with outlet pipes (306). The bottom end of the outlet pipe (306) passes through the top of the spray tank (3) and extends into the inner cavity of the spray plate (7) for fixation. A valve (307) is fixed on the outlet pipe (306) between the acid tank (302), the alkali tank (301) and the spray pipe.

5. The industrial waste gas purification and treatment device according to claim 1, characterized in that: The bottom of the spray plate (7) is fixed with nozzles (701) that are evenly distributed.

6. The industrial waste gas purification and treatment device according to claim 1, characterized in that: The side wall of the jet spiral tube (5) is provided with air holes (502) arranged in a spiral linear array. The end of the jet spiral tube (5) near its center is a closed end, and the end away from its center is connected to an air inlet pipe (501). The end of the air inlet pipe (501) away from the jet spiral tube (5) passes through the side wall of the spray tank (3) and extends into the filter cylinder (2). The connection between the air inlet pipe (501) and the filter cylinder (2) is fixed. The port of the air inlet pipe (501) is lower than the position of the stainless steel filter screen (205).

7. The industrial waste gas purification and treatment device according to claim 1, characterized in that: The bottom end of the filter cylinder (2) is screwed with a base (201), the bottom end of the spray tank (3) is open, the top end of the liquid storage tank (4) is open, and the cross-sectional dimension of the liquid storage tank (4) is larger than the cross-sectional dimension of the spray tank (3). The outer periphery of the spray tank (3) is fixed with legs (305) arranged in a ring array, and the bottom of the legs (305) is flush with the bottom surface of the liquid storage tank (4).

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