Waste gas treatment device with recovery function

Abstract

The utility model discloses a waste gas treatment device with recovery function, which relates to the technical field of waste gas treatment, and comprises a pretreatment unit, a purification unit and a recovery unit, the pretreatment unit comprises a cyclone separator and a wet spray tower, the air outlet of the cyclone separator is fixedly connected with the bottom of the wet spray tower, and the purification unit is connected with the recovery unit. The purification unit comprises an adsorption tower and a catalytic combustion box, an outlet of the wet spray tower is fixedly connected with an inlet of the adsorption tower, the top of the catalytic combustion box is fixedly connected with the bottom of the adsorption tower, and the recovery unit comprises a condensation recovery box and a distillation purification box. Through cooperative work of the pretreatment unit, the purification unit and the recovery unit, efficient purification of waste gas and recycling of recoverable resources are achieved, the environment-friendly requirement is met, the production cost of enterprises is reduced, and the resource utilization rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a waste gas treatment device with a recovery function. Background Technology

[0002] Industrial production processes, such as chemical, coating, and printing industries, generate large amounts of waste gas containing pollutants such as organic solvents, heavy metal particles, and harmful gases. However, most existing waste gas treatment devices focus on purifying the pollutants in the waste gas to meet environmental emission standards, often neglecting the utilization of some recyclable resources, leading to resource waste. For example, the organic solvents in the waste gas have high economic value; direct emission not only wastes resources but also increases production costs for enterprises. Furthermore, some waste gas treatment devices suffer from low purification efficiency, complex processing procedures, and high energy consumption, making it difficult to achieve efficient and economical treatment of waste gas. Therefore, we propose a waste gas treatment device with a recovery function. Utility Model Content

[0003] In view of the problems existing in the above-mentioned waste gas treatment devices with recycling function, this utility model is proposed.

[0004] Therefore, the purpose of this utility model is to provide a waste gas treatment device with a recycling function, which solves the problem that most existing waste gas treatment devices focus on purifying pollutants in waste gas to meet environmental emission standards, but often neglect the utilization of some recyclable resources in waste gas, resulting in resource waste. For example, the organic solvents contained in waste gas have high economic value, and direct discharge not only wastes resources but also increases the production costs of enterprises. At the same time, some waste gas treatment devices have problems such as low purification efficiency, complex treatment process, and high energy consumption, making it difficult to achieve efficient and economical treatment of waste gas.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A waste gas treatment device with a recovery function includes a pretreatment unit, a purification unit, and a recovery unit. The pretreatment unit includes a cyclone separator and a wet scrubbing tower. The outlet of the cyclone separator is fixedly connected to the bottom of the wet scrubbing tower. The purification unit includes an adsorption tower and a catalytic combustion chamber. The outlet of the wet scrubbing tower is fixedly connected to the inlet of the adsorption tower. The top of the catalytic combustion chamber is fixedly connected to the bottom of the adsorption tower. The recovery unit includes a condensation recovery chamber and a distillation purification chamber. The outlet of the adsorption tower is penetratingly connected to one side of the condensation recovery chamber. The bottom of the condensation recovery chamber is penetratingly connected to the top of the distillation purification chamber. A first discharge port is fixedly installed on one side of the distillation purification chamber.

[0007] Preferably, both the wet scrubbing tower and the condensation recovery tank are equipped with a temperature sensor, a pressure sensor, and a concentration sensor. A controller is fixedly installed on the surface of the condensation recovery tank. The controller is electrically connected to the temperature sensor, the pressure sensor, and the concentration sensor, and is also electrically connected to the pretreatment unit, the purification unit, and the recovery unit.

[0008] Preferably, the wet spray tower is equipped with multiple layers of spray heads, and each of the multiple layers of spray heads is equipped with a demister at the top.

[0009] Preferably, the condensation recovery box is equipped with a precooling section, a cryogenic section, and a fine cooling section.

[0010] Preferably, a second discharge port is provided on one side of the catalytic combustion chamber.

[0011] Preferably, the connection points of the pretreatment unit, purification unit and recycling unit are all equipped with solenoid valves, and multiple solenoid valves are electrically connected to the controller.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] 1. This utility model achieves efficient purification of waste gas and recycling of recyclable resources through the coordinated work of the pretreatment unit, purification unit and recovery unit. It not only meets environmental protection requirements, but also reduces enterprise production costs and improves resource utilization. At the same time, temperature sensors, pressure sensors and concentration sensors monitor and intelligently control the waste gas treatment process in real time to ensure that each treatment unit is in the best operating state, thereby improving the efficiency and stability of waste gas treatment.

[0014] 2. This utility model, through innovative design such as the multi-stage condensation structure of the demister and condensation recovery device in the wet spray tower, further optimizes the waste gas treatment process and improves the practicality and maintainability of the equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the wet spray tower of this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the condensation recovery tank of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Pretreatment unit; 2. Purification unit; 3. Recovery unit; 4. Cyclone separator; 5. Wet spray tower; 6. Adsorption tower; 7. Catalytic combustion chamber; 8. Condensation recovery chamber; 9. Distillation purification chamber; 10. First discharge port; 11. Temperature sensor; 12. Pressure sensor; 13. Concentration sensor; 14. Controller; 15. Multi-layer spray head; 16. Demister; 17. Precooling section; 18. Deep cooling section; 19. Fine cooling section; 20. Second discharge port; 21. Solenoid valve. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] This utility model discloses a waste gas treatment device with a recycling function.

[0023] This utility model provides, for example Figure 1-3 The waste gas treatment device with recovery function shown includes a pretreatment unit 1, a purification unit 2, and a recovery unit 3. The pretreatment unit 1 includes a cyclone separator 4 and a wet scrubbing tower 5. The outlet of the cyclone separator 4 is fixedly connected to the bottom of the wet scrubbing tower 5. The purification unit 2 includes an adsorption tower 6 and a catalytic combustion chamber 7. The outlet of the wet scrubbing tower 5 is fixedly connected to the inlet of the adsorption tower 6, and the top of the catalytic combustion chamber 7 is fixedly connected to the bottom of the adsorption tower 6. The recovery unit 3 includes a condensation recovery chamber 8 and a distillation purification chamber 9. The outlet of the adsorption tower 6 is connected through to one side of the condensation recovery chamber 8, and the bottom of the condensation recovery chamber 8 is connected through to the top of the distillation purification chamber 9. A first discharge port 10 is fixedly installed on one side of the distillation purification chamber 9. The coordinated operation of the pretreatment unit 1, the purification unit 2, and the recovery unit 3 achieves efficient purification of waste gas and recycling of recyclable resources.

[0024] This utility model discloses a waste gas treatment device with a recovery function. The wet spray tower 5 and the condensation recovery box 8 are both equipped with a temperature sensor 11, a pressure sensor 12, and a concentration sensor 13. A controller 14 is fixedly installed on the surface of the condensation recovery box 8. The controller 14 is electrically connected to the temperature sensor 11, the pressure sensor 12, and the concentration sensor 13, respectively. The controller 14 is also electrically connected to the pretreatment unit 1, the purification unit 2, and the recovery unit 3, respectively, to ensure that each treatment unit is in the optimal operating state, thereby improving the waste gas treatment efficiency and stability.

[0025] This utility model discloses a waste gas treatment device with a recovery function. The wet spray tower 5 is equipped with multiple spray heads 15 inside. Each of the multiple spray heads is equipped with a demister 16 at the top to remove water mist carried in the waste gas and prevent water mist from entering the subsequent treatment unit and affecting the treatment effect.

[0026] This utility model discloses a waste gas treatment device with a recovery function. The condensation recovery box 8 is equipped with a pre-cooling section 17, a deep cooling section 18 and a fine cooling section 19. By condensing at different temperature gradients, the recovery efficiency of organic solvents is improved.

[0027] This utility model discloses a waste gas treatment device with a recycling function. The catalytic combustion box 7 has a second discharge port 20 on one side to facilitate the discharge of waste.

[0028] This utility model discloses a waste gas treatment device with a recovery function. The connection between the pretreatment unit 1, the purification unit 2 and the recovery unit 3 is provided with a solenoid valve 21, and multiple solenoid valves 21 are electrically connected to the controller 14 to facilitate the control of the device.

[0029] In operation, after the exhaust gas enters the device, each unit works in an orderly manner to achieve efficient treatment and resource recovery. First, in the pretreatment unit 1, the exhaust gas enters the cyclone separator 4, where centrifugal force separates large dust particles and solid impurities. Then, it enters the wet scrubbing tower 5, where multi-layer spray nozzles 15 spray washing liquid to further remove fine dust, water-soluble pollutants, and some harmful gases. The demister 16 removes water mist carried in the exhaust gas. Next, in the purification unit 2, the pretreated exhaust gas enters the adsorption tower 6 filled with activated carbon adsorbent, where residual organic solvents and organic pollutants are adsorbed. When the activated carbon is saturated, hot air desorption sends the organic pollutants to catalytic combustion. Inside the chamber 7, the organic solvent vapors are combusted and decomposed into carbon dioxide and water under the action of a catalyst. Then, in the recovery unit 3, the organic solvent vapors desorbed from the adsorption tower 6 enter the condensation recovery chamber 8, where they are initially liquefied and recovered through a multi-stage condensation structure. After passing through the distillation purification chamber 9, high-purity organic solvents are obtained. Throughout the process, the controller 14 monitors parameters such as temperature, pressure, and pollutant concentration in real time through temperature sensor 11, pressure sensor 12, and concentration sensor 13. The controller 14 controls the actuators based on the feedback data and adjusts the operating parameters of each unit to achieve automated and intelligent operation. The waste heat recovery system can also recover the heat generated by catalytic combustion for preheating waste gas or providing a heat source for distillation.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waste gas treatment device with a recovery function, comprising a pretreatment unit (1), a purification unit (2), and a recovery unit (3), characterized in that, The pretreatment unit (1) includes a cyclone separator (4) and a wet spray tower (5). The outlet of the cyclone separator (4) is fixedly connected to the bottom of the wet spray tower (5). The purification unit (2) includes an adsorption tower (6) and a catalytic combustion chamber (7). The outlet of the wet spray tower (5) is fixedly connected to the inlet of the adsorption tower (6). The top of the catalytic combustion chamber (7) is fixedly connected to the bottom of the adsorption tower (6). The recovery unit (3) includes a condensation recovery chamber (8) and a distillation purification chamber (9). The outlet of the adsorption tower (6) is connected through one side of the condensation recovery chamber (8). The bottom of the condensation recovery chamber (8) is connected through the top of the distillation purification chamber (9). A first discharge port (10) is fixedly installed on one side of the distillation purification chamber (9).

2. The waste gas treatment device with recovery function according to claim 1, characterized in that, The wet spray tower (5) and the condensation recovery tank (8) are equipped with a temperature sensor (11), a pressure sensor (12) and a concentration sensor (13). A controller (14) is fixedly installed on the surface of the condensation recovery tank (8). The controller (14) is electrically connected to the temperature sensor (11), the pressure sensor (12) and the concentration sensor (13) respectively, and the controller (14) is electrically connected to the pretreatment unit (1), the purification unit (2) and the recovery unit (3) respectively.

3. The waste gas treatment device with recovery function according to claim 1, characterized in that, The wet spray tower (5) is equipped with multiple spray heads (15) inside, and each of the multiple spray heads is equipped with a demister (16) at the top.

4. The waste gas treatment device with recovery function according to claim 1, characterized in that, The condensation recovery box (8) is equipped with a precooling section (17), a cryogenic section (18), and a fine cooling section (19).

5. The waste gas treatment device with recovery function according to claim 1, characterized in that, The catalytic combustion chamber (7) is provided with a second discharge port (20) on one side.

6. The waste gas treatment device with recovery function according to claim 1, characterized in that, The pretreatment unit (1), purification unit (2) and recycling unit (3) are all equipped with solenoid valves (21), and multiple solenoid valves (21) are electrically connected to the controller (14).

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