A vortex pre-separation adsorption device for hydrogen peroxide tail gas

Abstract

The utility model discloses a kind of whirl flow pre-separation adsorption devices for hydrogen peroxide tail gas, it is related to tail gas adsorption device technical field, including cyclone separation tank, the upper portion lateral wall of cyclone separation tank is fixedly connected with inlet pipe, one side of cyclone separation tank is provided with adsorption tank, the top surface of adsorption tank and cyclone separation tank top surface are fixedly connected with communicating pipe, the inner wall of cyclone separation tank is fixedly connected with helical flow guide plate, the inner top surface of cyclone separation tank is fixedly connected with exhaust pipe, the utility model is combined design by tangent inlet, helical flow guide, central exhaust and preliminary dehumidification, realize the pre-separation of most liquid phase aromatic hydrocarbons and solid particles in tail gas, liquid drop content in gas after pretreatment is effectively reduced and water vapor content is reduced, substantially reduce the processing load of subsequent adsorption tank, avoid that adsorption material is directly contacted with a large number of liquid drops and quickly fails, provide high-quality inlet condition for depth adsorption.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust gas adsorption devices, and in particular to a vortex pre-separation adsorption device for hydrogen peroxide exhaust gas. Background Technology

[0002] Hydrogen peroxide is a key material in the fields of environmental protection, medical care, electronics and new energy. The market demand for it grows by more than 10% annually. More than 95% of its production capacity relies on the anthraquinone process. The oxidation process of this process generates a large amount of exhaust gas, which needs to be treated before it can be discharged.

[0003] However, in existing technologies, traditional ice machine methods and turbine expander cooling methods can only condense and separate some heavy aromatics. They are not effective at separating small-sized liquid aromatic droplets, resulting in a low overall organic matter recovery rate. Furthermore, when the cooled exhaust gas directly enters the adsorption device, the large number of entrained droplets and high concentrations of aromatics can cause the adsorbent to become saturated quickly. Traditional adsorption materials such as activated carbon fiber have short service life and require frequent regeneration, which not only increases operation and maintenance costs but also poses risks of low regeneration efficiency, safety hazards, and secondary pollution. Utility Model Content

[0004] The purpose of this invention is to address the problems of traditional icing machine and turbine expander cooling methods, which can only condense and separate some heavy aromatics, have poor separation effect on liquid aromatic droplets with small particle size, have low overall organic matter recovery rate, and when the cooled exhaust gas directly enters the adsorption device, the large number of entrained droplets and high concentration of aromatics will cause the adsorbent to saturate rapidly. Traditional adsorption materials such as activated carbon fiber have short service life and require frequent regeneration, which not only increases operation and maintenance costs, but also has problems such as low regeneration efficiency, safety hazards and secondary pollution risks. Therefore, a vortex pre-separation adsorption device for hydrogen peroxide exhaust gas is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a vortex pre-separation adsorption device for hydrogen peroxide tail gas, comprising a vortex separator, an air inlet pipe fixedly connected to the upper side wall of the vortex separator, an adsorption tank disposed on one side of the vortex separator, a connecting pipe fixedly connected between the top surface of the adsorption tank and the top surface of the vortex separator, a spiral guide plate fixedly connected to the inner wall of the vortex separator, an exhaust pipe fixedly connected to the inner top surface of the vortex separator, the exhaust pipe being disposed inside the spiral guide plate, a plurality of connecting holes being opened through the outer wall of the exhaust pipe, a dehumidifying filter element fixedly connected to the inner top surface of the exhaust pipe, and one end of the connecting hole being inserted into the inner wall of the dehumidifying filter element.

[0006] Preferably, a guide cone is provided below the exhaust pipe, the guide cone is fixedly connected to the bottom surface of the cyclone separator, and the bottom surface of the cyclone separator is fixedly connected to a drain pipe.

[0007] Preferably, an installation plate is inserted into the outer wall of the adsorption tank, and a handle is fixedly connected to the outer wall of the installation plate.

[0008] Preferably, the adsorption tank is provided with a composite adsorption filter element inside, and the composite adsorption filter element is fixedly connected to the inner side wall of the mounting plate.

[0009] Preferably, the bottom surface of the adsorption tank is provided with an air intake hole, and a fan is installed on the bottom surface of the adsorption tank.

[0010] Preferably, the air inlet of the fan is connected to the inner wall of the air intake hole.

[0011] Preferably, a support frame is fixedly connected to the outer wall of the cyclone separator.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the combined design of tangential air intake, spiral flow guidance, central exhaust and preliminary dehumidification achieves the pre-separation of most liquid aromatics and solid particles in the exhaust gas. The droplet content in the gas after pretreatment is effectively reduced and the water vapor content is also reduced, which greatly reduces the processing load of the subsequent adsorption tank and avoids the adsorption material from failing rapidly due to direct contact with a large number of droplets, thus providing excellent air intake conditions for deep adsorption.

[0013] 2. In this utility model, the residual VOCs are further adsorbed by the composite adsorption filter element, which improves the adsorption efficiency and ensures that the final emission gas meets the standards. With the plug-in mounting plate and handle design, the replacement time of the adsorption filter element is greatly shortened and the maintenance cost is reduced. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a vortex pre-separation adsorption device for hydrogen peroxide tail gas. Figure 2 This utility model provides a rear view structural schematic diagram of a vortex pre-separation adsorption device for hydrogen peroxide tail gas. Figure 3 This utility model provides a schematic diagram of the internal structure of the cyclone separator tank of a cyclone pre-separation adsorption device for hydrogen peroxide tail gas. Figure 4 This invention presents a schematic diagram of the internal structure of the adsorption tank of a vortex pre-separation adsorption device for hydrogen peroxide tail gas.

[0015] Legend: 1. Cyclone separator; 11. Drain pipe; 12. Spiral guide plate; 13. Exhaust pipe; 14. Guide cone; 15. Connecting hole; 16. Dehumidifying filter element; 2. Inlet pipe; 3. Support frame; 4. Adsorption tank; 41. Mounting plate; 42. Handle; 43. Composite adsorption filter element; 44. Suction hole; 5. Connecting pipe; 6. Fan. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a vortex pre-separation adsorption device for hydrogen peroxide tail gas, including a vortex separator 1. An air inlet pipe 2 is fixedly connected to the upper side wall of the vortex separator 1. An adsorption tank 4 is provided on one side of the vortex separator 1. A connecting pipe 5 is fixedly connected between the top surface of the adsorption tank 4 and the top surface of the vortex separator 1. A spiral guide plate 12 is fixedly connected to the inner wall of the vortex separator 1. An exhaust pipe 13 is fixedly connected to the inner top surface of the vortex separator 1. The exhaust pipe 13 is located inside the spiral guide plate 12. Multiple connecting holes 15 are opened through the outer wall of the exhaust pipe 13. A dehumidifying filter element 16 is fixedly connected to the inner top surface of the exhaust pipe 13. One end of the connecting hole 15 is inserted into the inner wall of the dehumidifying filter element 16.

[0019] The specific setup and function of this embodiment are described below. The intake pipe 2 adopts a tangential fixed connection design, allowing the hydrogen peroxide exhaust gas to enter along the tangential direction of the upper sidewall of the cyclone separator 1, directly imparting initial rotational kinetic energy to the airflow. The spiral guide plate 12 is fixed to the inner wall of the cyclone separator 1, guiding the incoming exhaust gas to form a regular, high-speed spiral airflow, enhancing centrifugal force, and ensuring that aromatic droplets and particles in the exhaust gas are efficiently thrown towards the tank wall, improving pre-separation efficiency. The exhaust pipe 13 is fixed to the inner top surface of the cyclone separator 1 and located inside the spiral guide plate 12, forming a central airflow channel to prevent short-circuiting of unseparated gases and simultaneously providing dedicated airflow for gas extraction. The gas is separated by a cyclone separator 13. The gas is uniformly introduced into the exhaust pipe 13 through the connecting hole 15, which avoids local airflow congestion and ensures smooth gas flow. The dehumidifying filter element 16 is fixed to the top surface of the exhaust pipe 13 and is inserted into one end of the connecting hole 15 to perform preliminary dehumidification on the gas entering the exhaust pipe 13, removing some water vapor from the exhaust gas and reducing the moisture loss of the adsorption material in the subsequent adsorption tank 4. The connecting pipe 5 connects the top surfaces of the cyclone separator 1 and the adsorption tank 4, stably delivering the pretreated gas to the adsorption tank 4 for deep purification, ensuring smooth connection between the two units and no gas leakage.

[0020] Example 2: Figure 1 - Figure 4 As shown, a guide cone 14 is provided below the exhaust pipe 13. The guide cone 14 is fixedly connected to the bottom surface of the cyclone separator 1. The bottom surface of the cyclone separator 1 is fixedly connected to the drain pipe 11. An installation plate 41 is inserted into the outer wall of the adsorption tank 4. A handle 42 is fixedly connected to the outer wall of the installation plate 41. A composite adsorption filter element 43 is provided inside the adsorption tank 4. The composite adsorption filter element 43 is fixedly connected to the inner side wall of the installation plate 41. An air intake hole 44 is opened through the bottom surface of the adsorption tank 4. A fan 6 is installed on the bottom surface of the adsorption tank 4. The air intake end of the fan 6 is connected to the inner wall of the air intake hole 44. A support frame 3 is fixedly connected to the outer wall of the cyclone separator 1.

[0021] The overall effect of this embodiment is that the drain pipe 11 is fixedly connected to the bottom surface of the cyclone separator 1, which efficiently discharges the liquid aromatics gathered by the guide cone 14, realizing the recycling and reuse of aromatic solvents and improving resource utilization. The mounting plate 41 is inserted into the outer wall of the adsorption tank 4 to provide an installation carrier for the composite adsorption filter element 43. The composite adsorption filter element 43 is made of a highly stable hydrophilic macroporous adsorption resin material containing hydrogen bonds, which deeply adsorbs residual aromatic VOCs in the pretreated gas, thereby achieving precise removal of harmful substances. Meanwhile, a plug-in design is adopted, which facilitates quick disassembly and installation. The handle 42 is fixed to the outer wall of the mounting plate 41, providing a force point for the insertion and removal of the mounting plate 41, reducing the difficulty of replacing the composite adsorption filter element 43 and improving the convenience of equipment maintenance. The fan 6 is installed on the bottom surface of the adsorption tank 4, and its air inlet end is connected to the inner wall of the air suction hole 44. Through the negative pressure suction, it provides power for the gas flow of the entire device, ensuring that the exhaust gas enters from the air inlet pipe 2, is discharged after pre-separation and adsorption, and the negative pressure intensity can be adjusted to adapt to different processing volume requirements.

[0022] The operating method and working principle of this device are as follows: Turn on the blower 6. The negative pressure suction of the blower 6 draws the hydrogen peroxide exhaust gas tangentially into the cyclone separator 1 along the inlet pipe 2. Guided by the spiral guide plate 12, the exhaust gas forms a high-speed spiral airflow. After centrifugal separation, the liquid aromatics and particles are thrown against the tank wall and converge at the bottom of the cyclone separator 1 along the guide cone 14. The gas is then discharged and recovered through the drain pipe 11. The preliminarily separated gas enters the exhaust pipe 13 and flows evenly through the dehumidifying filter element 16 via the connecting hole 15. After removing some water vapor, the gas is transported to the adsorption tank 4 through the connecting pipe 5. The gas comes into full contact with the composite adsorption filter element 43 in the adsorption tank 4, and the residual aromatic VOCs are adsorbed and removed. The purified gas enters the fan 6 through the suction port 44 and is discharged to the atmosphere by the fan 6. The recovered aromatic solvent is collected periodically through the drain pipe 11. When the VOCs emission concentration exceeds the standard or the pressure loss of the fan 6 is too large, the mounting plate 41 can be pulled out by the handle 42, the composite adsorption filter element 43 can be replaced and reinstalled.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A vortex pre-separation adsorption device for hydrogen peroxide tail gas, comprising a vortex separator (1), characterized in that: An air inlet pipe (2) is fixedly connected to the upper side wall of the cyclone separator (1). An adsorption tank (4) is provided on one side of the cyclone separator (1). A connecting pipe (5) is fixedly connected between the top surface of the adsorption tank (4) and the top surface of the cyclone separator (1). A spiral guide plate (12) is fixedly connected to the inner wall of the cyclone separator (1). An exhaust pipe (13) is fixedly connected to the inner top surface of the cyclone separator (1). The exhaust pipe (13) is located inside the spiral guide plate (12). Multiple connecting holes (15) are opened through the outer wall of the exhaust pipe (13). A dehumidifying filter element (16) is fixedly connected to the inner top surface of the exhaust pipe (13). One end of the connecting hole (15) is inserted into the inner wall of the dehumidifying filter element (16).

2. The vortex pre-separation adsorption device for hydrogen peroxide tail gas according to claim 1, characterized in that: A guide cone (14) is provided below the exhaust pipe (13). The guide cone (14) is fixedly connected to the bottom surface of the cyclone separator (1). The bottom surface of the cyclone separator (1) is fixedly connected to a drain pipe (11).

3. The vortex pre-separation adsorption device for hydrogen peroxide tail gas according to claim 1, characterized in that: An installation plate (41) is inserted into the outer wall of the adsorption tank (4), and a handle (42) is fixedly connected to the outer wall of the installation plate (41).

4. The vortex pre-separation adsorption device for hydrogen peroxide tail gas according to claim 3, characterized in that: The adsorption tank (4) is equipped with a composite adsorption filter element (43), which is fixedly connected to the inner wall of the mounting plate (41).

5. The vortex pre-separation adsorption device for hydrogen peroxide tail gas according to claim 4, characterized in that: The bottom surface of the adsorption tank (4) is provided with an air intake hole (44), and a fan (6) is installed on the bottom surface of the adsorption tank (4).

6. The vortex pre-separation adsorption device for hydrogen peroxide tail gas according to claim 5, characterized in that: The air inlet of the fan (6) is connected to the inner wall of the air intake hole (44).

7. The vortex pre-separation adsorption device for hydrogen peroxide tail gas according to claim 1, characterized in that: The outer wall of the cyclone separator (1) is fixedly connected to a support frame (3).

Images