Low-concentration vocs adsorption ozone catalytic decomposition treatment device

Abstract

This utility model discloses a low-concentration VOCs adsorption ozone catalytic decomposition treatment device, relating to the field of waste gas treatment technology. Addressing the problems in existing technologies where strict requirements are placed on waste gas composition and catalysts are prone to chlorine and sulfur ion poisoning leading to failure and affecting equipment operation, the following solution is proposed: A treatment shell is included, with a cover plate hinged to one side of its outer wall, and an inlet pipe is inserted into the top of the cover plate. This utility model introduces low-concentration VOCs gas into the heating shell through a fixed pipe and a movable pipe. An oxygen tank, along with an oxygen delivery pipe and an inlet pipe, delivers oxygen to the heating shell to participate in the catalytic reaction. The heating shell heats the reaction environment. Under the action of the catalyst, VOCs react with oxygen (O₂) to produce harmless substances such as CO₂ and H₂O, which are discharged through the outlet pipe. An adsorption shell filled with activated carbon adsorbs the generated fine particulate matter.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a low-concentration VOCs adsorption ozone catalytic decomposition treatment device. Background Technology

[0002] Volatile organic compounds (VOCs), as highly reactive components in the atmosphere, not only directly harm human health but also form secondary pollutants such as photochemical smog and organic aerosols, becoming important precursors to PM2.5 and ozone. It is estimated that in 2015, my country's total anthropogenic VOC emissions reached 30 million tons, with industrial VOC emissions accounting for 55.5% of the total. In July 2016, the Ministry of Industry and Information Technology and the Ministry of Finance issued the "Action Plan for Reducing Volatile Organic Compounds in Key Industries," aiming to reduce industrial VOC emissions by 3.3 million tons by 2018 compared to 2015 levels. Therefore, researching and developing VOC purification technologies to reduce VOC emissions is crucial for improving ambient air quality and protecting human health, and is also an urgent need for sustainable socio-economic development.

[0003] Current catalytic decomposition devices have some drawbacks in actual operation. For example, RCO / CO equipment has strict requirements on the composition of exhaust gas, and the catalyst is prone to poisoning by chlorine, sulfur and other ions, which can lead to failure and affect the operating performance of the equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a low-concentration VOCs adsorption ozone catalytic decomposition treatment device, which overcomes the deficiencies of existing technologies and effectively solves the problems of strict requirements on the composition of waste gas, easy poisoning of catalysts by chlorine and sulfur ions leading to failure, and thus affecting the operating performance of the equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-concentration VOCs adsorption ozone catalytic decomposition treatment device includes a treatment shell. A cover plate is hinged to one side of the outer wall of the treatment shell, and an air inlet pipe is inserted into the top of the cover plate. A delivery pipe is inserted and fixed to the top of the air inlet pipe, and an oxygen tank is inserted into one end of the delivery pipe. A water storage shell is inserted and fixed to the bottom of the treatment shell, and a water outlet pipe with a control valve is inserted and fixed to the bottom of the water storage shell. A catalytic mechanism is provided inside the treatment shell, and the catalytic mechanism includes a heating shell, an air outlet pipe inserted and movable to one end of the heating shell, a fixed pipe disposed at the other end of the heating shell, a movable pipe inserted and movable to one end of the fixed pipe, a limiting ring sleeved and fixed to one end of the outer wall of the movable pipe, and a telescopic spring sleeved and movable to the outer wall of the movable pipe.

[0007] Low-concentration VOCs gas enters the heating shell through a fixed pipe and a movable pipe. In conjunction with an oxygen tank, oxygen is delivered to the heating shell through a delivery pipe and an inlet pipe to participate in the catalytic reaction. The heating shell raises the temperature of the reaction environment. Under the action of the catalyst, VOCs react with oxygen (O2) to produce harmless substances such as CO2 and H2O, which are discharged through the outlet pipe. The fine particulate matter generated can be adsorbed by setting an adsorption shell filled with activated carbon.

[0008] Preferably, the top of the cover plate has a through hole, and a sealing ring is bonded and fixed inside the through hole, with the sealing ring forming an interference fit with the air intake pipe.

[0009] The sealing ring ensures a tight seal between the cover and the air intake pipe as the air intake pipe moves up and down on the top of the cover.

[0010] Preferably, a first connecting block is welded and fixed to the other side of the outer wall of the processing shell, and support legs are welded and fixed to both ends of the bottom of the processing shell.

[0011] The processing shell is supported and lifted by the set support legs.

[0012] Preferably, a second connecting block is welded and fixed to the other side of the outer wall of the cover plate, and the second connecting block is rotatably connected with a buckle, and the second connecting block and the first connecting block are fastened together by the buckle.

[0013] By flipping the buckle, the second connecting block is connected and fixed to the first connecting block, thus splicing and fixing the cover plate to the processing shell.

[0014] Preferably, the top of the outer wall of the heating shell is provided with an insertion hole, and the insertion hole and the bottom end of the air inlet pipe form a plug-in sealing fit.

[0015] After the cover plate is spliced ​​and fixed to the processing shell, the bottom end of the air inlet pipe is inserted and connected to the inside of the heating shell by pressing down.

[0016] Preferably, the vent pipe and the fixed pipe are welded and fixed to both ends of the treatment shell, and the movable pipe and one end of the heating shell are connected in an insertion fit. The heating shell is filled with a catalyst, and one end of the vent pipe is inserted and fixed to an adsorption shell filled with activated carbon.

[0017] By leveraging the elastic extension and retraction of the telescopic spring, the movable tube is inserted into the fixed tube, which moves the heating shell toward the fixed tube and separates the heating shell from the gas outlet tube. This allows the heating shell to be removed from the processing shell. The catalyst used in the process employs a variety of oxides (such as MnOx-CeO2) to synergistically enhance activity and stability. The adsorption shell filled with activated carbon can adsorb the generated fine particulate matter.

[0018] The beneficial effects of this utility model are as follows:

[0019] Low-concentration VOCs gas is introduced into the heating shell through fixed and movable pipes. Oxygen is delivered to the heating shell through a delivery pipe and an inlet pipe to participate in the catalytic reaction. The heating shell heats the reaction environment. Under the action of the catalyst, VOCs react with oxygen (O2) to produce harmless substances such as CO2 and H2O, which are discharged through the outlet pipe. The fine particulate matter generated can be adsorbed by setting up an adsorption shell filled with activated carbon. This effectively solves the problems in the existing technology where the requirements for the composition of waste gas are strict and the catalyst is prone to chlorine and sulfur ion poisoning, which leads to failure and affects the operation of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a low-concentration VOCs adsorption ozone catalytic decomposition treatment device proposed in this utility model.

[0021] Figure 2 This is a schematic diagram showing the opening of the cover plate structure of a low-concentration VOCs adsorption ozone catalytic decomposition treatment device proposed in this utility model.

[0022] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the treatment shell of a low-concentration VOCs adsorption ozone catalytic decomposition treatment device proposed in this utility model.

[0023] Figure 4 This is a schematic diagram of the catalytic mechanism of a low-concentration VOCs adsorption ozone catalytic decomposition treatment device proposed in this utility model.

[0024] In the diagram: 1. Processing shell; 2. Support leg; 3. Cover plate; 4. Air inlet pipe; 5. Delivery pipe; 6. Oxygen tank; 7. First connecting block; 8. Water storage shell; 9. Water outlet pipe; 10. Second connecting block; 11. Buckle; 12. Catalytic mechanism; 13. Heating shell; 14. Air outlet pipe; 15. Fixed pipe; 16. Movable pipe; 17. Limiting ring; 18. Telescopic spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0026] Reference Figure 1-4A low-concentration VOCs adsorption ozone catalytic decomposition treatment device includes a treatment shell 1. A cover plate 3 is hinged to one side of the outer wall of the treatment shell 1. An air inlet pipe 4 is inserted into the top of the cover plate 3. A delivery pipe 5 is inserted into and fixed at the top of the air inlet pipe 4. An oxygen tank 6 is inserted into one end of the delivery pipe 5. A water storage shell 8 is inserted into and fixed at the bottom of the treatment shell 1. A water outlet pipe 9 with a control valve is inserted into and fixed at the bottom of the water storage shell 8. A catalytic mechanism 12 is provided inside the treatment shell 1. The catalytic mechanism 12 includes a heating shell 13, an air outlet pipe 14 inserted into and movable at one end of the heating shell 13, a fixed pipe 15 disposed at the other end of the heating shell 13, a movable pipe 16 inserted into and movable at one end of the fixed pipe 15, a limiting ring 17 sleeved and fixed at one end of the outer wall of the movable pipe 16, and a telescopic spring 18 sleeved and movable on the outer wall of the movable pipe 16.

[0027] The top of the cover plate 3 has a through hole, and a sealing ring is glued and fixed inside the through hole. The sealing ring and the air inlet pipe 4 form an interference fit. The sealing ring ensures that the air inlet pipe 4 can maintain the sealing between the cover plate 3 and the air inlet pipe 4 when the cover plate 3 moves up and down. A first connecting block 7 is welded and fixed to the other side of the outer wall of the processing shell 1. Support legs 2 are welded and fixed to both ends of the bottom of the processing shell 1. The support legs 2 support and lift the processing shell 1. A second connecting block 10 is welded and fixed to the other side of the outer wall of the cover plate 3. The second connecting block 10 is rotatably connected to a buckle 11. The second connecting block 10 and the first connecting block 7 are fastened together by the buckle 11. By flipping the buckle 11, the second connecting block 10 and the first connecting block 7 are connected and fixed, so that the cover plate 3 and the processing shell 1 are spliced ​​and fixed.

[0028] The top of the outer wall of the heating shell 13 has an insertion hole, which forms a plug-in sealing fit with the bottom end of the air inlet pipe 4. After the cover plate 3 is spliced ​​and fixed with the processing shell 1, the bottom end of the air inlet pipe 4 is plugged into and connected with the interior of the heating shell 13 by pressing down. The air outlet pipe 14 and the fixed pipe 15 are welded and fixed to both ends of the processing shell 1, respectively. The movable pipe 16 forms a plug-in fit with one end of the heating shell 13. The heating shell 13 is filled with a catalyst. One end of the air outlet pipe 14 is plugged into and fixed with an adsorption shell filled with activated carbon. By the elastic extension and contraction of the telescopic spring 18, the movable pipe 16 is inserted into the fixed pipe 15, which can move the heating shell 13 toward the fixed pipe 15 and separate the heating shell 13 from the air outlet pipe 14, so that the heating shell 13 can be taken out from the processing shell 1. The catalyst filled with various oxides (such as MnOx-CeO2) can synergistically improve the activity and stability. The adsorption shell filled with activated carbon can adsorb the generated fine particulate matter.

[0029] Working principle:

[0030] During operation, low-concentration VOCs gas enters the heating shell 13 through the fixed pipe 15 and the movable pipe 16. In conjunction with the oxygen tank 6, oxygen is delivered to the heating shell 13 through the delivery pipe 5 and the air inlet pipe 4 to participate in the catalytic reaction. The heating shell 13 heats the reaction environment. Under the action of the catalyst, VOCs react with oxygen (O2) to produce harmless substances such as CO2 and H2O, which are discharged through the exhaust pipe 14. The fine particulate matter generated can be adsorbed by setting an adsorption shell filled with activated carbon.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-concentration VOCs adsorption ozone catalytic decomposition treatment device, comprising a treatment shell (1), characterized in that, A cover plate (3) is hinged to one side of the outer wall of the processing shell (1), and an air inlet pipe (4) is inserted into the top of the cover plate (3). A delivery pipe (5) is inserted into the top of the air inlet pipe (4), and an oxygen tank (6) is inserted into one end of the delivery pipe (5). A water storage shell (8) is inserted into the bottom of the processing shell (1), and a water outlet pipe (9) with a control valve is inserted into the bottom of the water storage shell (8). A catalytic mechanism (12) is provided inside the processing shell (1), and the catalytic mechanism (12) includes a heating shell (13), an air outlet pipe (14) inserted into one end of the heating shell (13), a fixed pipe (15) provided at the other end of the heating shell (13), a movable pipe (16) inserted into one end of the fixed pipe (15), a limiting ring (17) sleeved and fixed to one end of the outer wall of the movable pipe (16), and a telescopic spring (18) sleeved on the outer wall of the movable pipe (16).

2. The low-concentration VOCs adsorption ozone catalytic decomposition treatment device according to claim 1, characterized in that, The top of the cover plate (3) has a through hole, and a sealing ring is bonded and fixed inside the through hole. The sealing ring and the air inlet pipe (4) form an interference fit.

3. The low-concentration VOCs adsorption ozone catalytic decomposition treatment device according to claim 1, characterized in that, The processing shell (1) has a first connecting block (7) welded and fixed on the other side of its outer wall, and support legs (2) are welded and fixed at both ends of its bottom.

4. The low-concentration VOCs adsorption ozone catalytic decomposition treatment device according to claim 1, characterized in that, A second connecting block (10) is welded and fixed on the other side of the outer wall of the cover plate (3), and the second connecting block (10) is rotatably connected with a buckle (11). The second connecting block (10) and the first connecting block (7) are fastened together by the buckle (11).

5. The low-concentration VOCs adsorption ozone catalytic decomposition treatment device according to claim 1, characterized in that, The top of the outer wall of the heating shell (13) is provided with an insertion hole, and the insertion hole and the bottom end of the air inlet pipe (4) form a plug-in sealing fit.

6. The low-concentration VOCs adsorption ozone catalytic decomposition treatment device according to claim 1, characterized in that, The exhaust pipe (14) and the fixed pipe (15) are welded and fixed to both ends of the processing shell (1), and the movable pipe (16) and one end of the heating shell (13) are connected in an insertion fit. The heating shell (13) is filled with a catalyst, and one end of the exhaust pipe (14) is connected and fixed to an adsorption shell filled with activated carbon.

Images