A VOC gas treatment system

Abstract

The present invention discloses a VOC gas treatment system, which relates to the field of waste gas treatment and aims to solve the problems in the prior art of insufficient mixing between organic gas and bacterial slurry and inconvenient replacement of the packing layer. The technical solution adopted is that a variable diameter section is provided on the air inlet pipe, and the variable diameter section can increase the Reynolds number of the gas flow process by changing the pipe diameter, thereby increasing the turbulence of the gas when entering the spray tower; after the air flow enters the spray tower, as the wind pressure under the hood plate increases, the hood slides up to expose the air holes, and the organic gas contacts the bacterial slurry through the air holes. The air holes can further increase the turbulence of the fluid. At the same time, when the organic gas passes through the hood, it will blow the fan blades to rotate, thereby greatly increasing the turbulence of the fluid, so that the organic gas can be fully mixed with the bacterial slurry.

Description

Technical Field

[0001] The present invention relates to the field of waste gas treatment, and in particular to a VOC gas treatment system. Background Art

[0002] VOC stands for Volatile Organic Compounds. While VOCs are commonly referred to as volatile organic compounds (VOCs), they are defined in environmental terms as reactive VOCs, meaning those that can be harmful.

[0003] In order to meet emission standards, existing organic gas treatment methods for low concentrations are sprayed, filtered, and then adsorbed on activated carbon before being discharged directly. For higher concentrations, the treatment method is to spray, filter, adsorb on activated carbon, and then desorb it before entering a catalytic combustion device for combustion and then discharge. The disadvantages are: (1) There are many equipments; (2) Wastewater is generated during the production process, which is secondary pollution; (3) The activated carbon after adsorption will become hazardous solid waste, and the catalyst used for catalytic combustion will need to be replaced after aging. The replaced catalyst needs to be specially treated or landfilled. If it is not managed properly, it is very easy to cause secondary pollution to the environment.

[0004] Chinese patent CN201520623369.8 discloses a device for purifying volatile organic waste gas using a dominant microbial flora. The technical solution adopted is as follows: a culture box, a gas biological purification tower, a bacterial liquid circulation pump, an exhaust induced draft fan, a purified gas induced draft fan and an exhaust pipe; the gas biological purification tower body is provided with a demister, a bacterial liquid distributor, a primary biological contact filler, a bacterial liquid redistributor, a secondary biological contact filler and a bacterial liquid circulation tank in order from the top to the bottom of the tower; the gas biological purification tower is provided with a gas outlet at the top of the tower, and the bacterial liquid is discharged from the top of the tower. A bacteria liquid circulation pump supply pipe is provided on the side wall of the tower body between the distributor and the demister, and a gas inlet, a bacteria liquid supply pipe, a bacteria liquid inlet and a vent pipe are provided on the side wall of the bacteria liquid circulation tank; a bacteria liquid circulation pump is connected between the bacteria liquid inlet and the bacteria liquid circulation pump supply pipe; the culture box is connected to the bacteria liquid supply pipe of the gas biological purification tower; the exhaust gas induced draft fan is connected to the gas inlet of the gas biological purification tower; the purified gas induced draft fan is connected to the gas outlet of the gas biological purification tower, and the exhaust end of the purified gas induced draft fan is connected to the exhaust pipe.

[0005] Chinese patent CN201620249204.3 discloses a device for treating volatile organic waste gas with a high-standard emission gas concentration. The technical solution adopted is, comprising a flame arrester and a water scrubber, wherein the outlet of the flame arrester is connected to the exhaust gas inlet of the water scrubber, the water inlet and the drain outlet of the water scrubber are connected to a circulating water pool, the exhaust port of the water scrubber is connected to a high-efficiency bioreactor, the lower part of the high-efficiency bioreactor is provided with a multi-point air distribution port, with no less than one air inlet per square meter, and a gas distributor is provided at each air inlet, a filler supporting device is provided in the middle part of the high-efficiency bioreactor, a biological filler layer is provided on the filler supporting device, and the biological filler layer comprises multiple pieces of plastic skeletons, multiple pieces of polyurethane foam fillers and a polyurethane foam filler suspended on the polyurethane foam filler. The biofilm between the polyurethane foam fillers, the plastic skeleton and the polyurethane foam filler filled in the high-efficiency biological reaction tower are considered to be in a volume ratio of 1:1 to 2:1. The biofilm is a specialized bacterial community domesticated and cultivated according to the actual pollutant situation of the exhaust gas, and the species of the formed bacterial community vary depending on the type of exhaust gas pollutants; the upper part of the high-efficiency biological reaction tower is provided with an atomizing nozzle, and the bottom of the high-efficiency biological reaction tower is provided with a drain port. The atomizing nozzle and the drain port are both connected to a nutrient solution circulating water pool. The nutrient solution is an inorganic salt solution containing nitrogen or phosphorus. The top of the high-efficiency biological reaction tower is provided with an exhaust port, and the exhaust port is connected to the air inlet of a demisting device. The exhaust port of the demisting device is connected to a high-altitude emission chimney after passing through a centrifugal fan. Summary of the Invention

[0006] The existing technology has the problems that the organic air flow can pass through the wind cap smoothly, the air flow turbulence is low, the mixing between the organic gas and the bacterial slurry is insufficient, the amount of organic gas adsorbed by microorganisms in a unit volume of bacterial slurry is small, and the packing layer is not easy to replace. In view of the above problems, the present invention discloses a VOC gas treatment system, which adopts the technical solution of comprising an exhaust gas collection device, a spray tower, a conveying fan, a chimney and a control circuit, wherein the exhaust gas collection device is connected to the air inlet pipe of the spray tower, the air outlet pipe of the spray tower is connected to the conveying fan and then connected to the chimney, a packing layer is arranged in the tower body, and the upper There is a demister, a microprocessor in the control circuit, and the microprocessor is electrically connected to the conveying fan. There is a variable diameter section on the air inlet pipe. According to the Reynolds number Re=ρvd / μ, where ρ is the fluid density, v is the fluid flow velocity, μ is the fluid viscosity coefficient, and d is the characteristic length, which is the pipe diameter or tower diameter here. The density and viscosity coefficient of the fluid are uncontrollable, and the inlet flow rate changes little. It can be seen that the variable diameter section can change the fluid Reynolds number by changing d. The larger the Reynolds number, the higher the degree of turbulence in the system, and the pipe diameter is inversely proportional to the flow velocity. By repeatedly changing the pipe diameter, the fluid can be made to flow smoothly in the pipeline. A speed difference occurs during the flow, which increases the degree of turbulence of the fluid. A liquid storage tank is installed under the spray tower, and the spray tower is connected to the liquid storage tank through a drain pipe. There is bacterial slurry in the liquid storage tank, and a skirt is provided on the outer sleeve of the liquid storage tank for installation and positioning. A liquid outlet pipe is installed on the liquid storage tank, and the liquid outlet pipe is connected to the inlet of the bacterial slurry circulation pump. The outlet of the bacterial slurry circulation pump is connected to a circulation pipe, and the circulation pipe enters the spray tower, and a spray head is installed on the circulation pipe. The bacterial slurry circulation pump extracts the bacterial slurry and sends it to the spray head for spraying. The bacterial slurry flows downward back to the liquid storage tank to be sprayed. The waste gas is circulated now, and the spray head is above the packing layer and can fully contact with the organic matter in the exhaust gas. The packing layer and the tower body are detachably connected to each other, which is convenient for the replacement of the packing. There is also a hood plate in the tower body, and a hood is slidably connected to the hood plate. The hood can change the flow state of the organic waste gas and increase the Reynolds number. There is a leakage hole on the hood plate to facilitate the flow of the bacterial slurry. There is a liquid level sensor on the hood plate to control the residual amount of the bacterial slurry above the hood plate, so as to maintain the stability of the bacterial slurry circulation. The microprocessor is electrically connected to the liquid level sensor and the bacterial slurry circulation pump.

[0007] As a preferred technical solution of the present invention, the variable diameter section includes a plurality of variable diameter units, which can repeatedly change the flow rate of the fluid in the unit so that there is a speed difference with the front and rear units to increase the turbulence. The variable diameter unit also includes a uniform portion and a changing portion. The diameters at both ends of the changing portion are the same as the diameter of the uniform portion, and the diameter in the middle is smaller than the diameter of the uniform portion. The flow speed of the fluid in the uniform portion is lower than the flow speed in the changing portion, so the turbulence degree before and after can be increased. At the same time, by extending the length of the uniform portion, the fluid can be prevented from relying on the high flow rate to directly reach the next changing portion after the flow speed in the changing portion is accelerated, thereby reducing the effect of the variable diameter section.

[0008] As a preferred technical solution of the present invention, there are multiple spray heads, which are evenly arranged on the circulation pipe, and can evenly spray the bacterial slurry in the spray tower, so that the VOC gas in the spray tower can evenly and fully contact with the bacterial slurry.

[0009] As a preferred technical solution of the present invention, the packing layer includes a packing support seat and a packing tube, the packing support seat is a riser type support seat, the packing tube is detachably connected to the packing support seat, the packing tube is filled with packing, and air holes are distributed on the outer wall. VOC gas enters the packing tube from the air holes at the bottom of the packing tube and fully contacts with the packing.

[0010] As a preferred technical solution of the present invention, a mounting seat is detachably connected to the bottom of the filler support seat to facilitate replacement of the filler. The mounting seat and the inner wall of the tower body are detachably connected. When multiple layers of filler are set, interference cannot be avoided. When removing the lower layer of filler, the upper mounting seat needs to be removed.

[0011] As a preferred technical solution of the present invention, the mounting seat is an L-shaped plate, including a horizontal plate and a vertical plate. The horizontal plate is connected to the filler support seat, and the vertical plate is connected to the inner wall of the tower body, and the connection is stable.

[0012] As a preferred technical solution of the present invention, the horizontal plate and the filler support seat are connected by fixing bolts, and the vertical plate and the inner wall of the tower body are connected by supporting bolts. The bolt connection effect is stable and easy to operate; reinforcing ribs are installed between the horizontal plate and the vertical plate, which can increase the supporting strength of the mounting seat and optimize the supporting effect.

[0013] As an optimal technical solution of the present invention, there is a connecting pipe under the filling cylinder, the connecting pipe has an external thread, and the filling support seat has a threaded hole engaged with the connecting pipe. The threaded connection is not only easy to assemble and disassemble but also has good sealing performance at the connection.

[0014] As an optimal technical solution of the present invention, the hood includes a cap, a cap body and fan blades, the cap is a conical cap, the cap body is a tubular structure with open ends, the cap can prevent the hood from falling, one end of the cap body is connected to the cap, and the other end of the cap body has a rim on the outside, the rim can prevent the hood from being blown off, the cap body has air holes, VOC gas can pass through the air holes, and can increase the irregularity of gas flow, a rotating shaft is installed under the cap, and fan blades are rotatably connected to the rotating shaft, and when VOC gas passes through the hood, it will blow the fan blades to rotate, greatly increasing the degree of disorder of the VOC gas; the hood plate has a hood hole, the hood hole matches the size of the hood, and the hood hole has an inner rim, and the inner rim matches the size of the rim.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a variable diameter section on the air inlet pipe, and the variable diameter section can increase the Reynolds number of the gas flow process by changing the pipe diameter, thereby increasing the degree of turbulence when the gas enters the spray tower; after the air flow enters the spray tower, as the wind pressure under the hood plate increases, the hood slides up, exposing the air holes, and the organic gas contacts the bacterial slurry through the air holes. The air holes can further increase the degree of turbulence of the fluid. At the same time, when the organic gas passes through the hood, it will blow the fan blades to rotate, thereby greatly increasing the degree of turbulence of the fluid, so that the organic gas can be fully mixed with the bacterial slurry.

[0016] Furthermore, the packing tube and the packing support seat are connected by threads, the packing support seat and the mounting seat are connected by bolts, and the mounting seat and the tower body are connected by bolts. After the processing is completed, the packing is easy to disassemble and replace, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the spray tower structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the hood of the present invention;

[0020] Figure 4 This is a schematic diagram of the external structure of the hood of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the hood of the present invention when viewed from above;

[0022] Figure 6 Schematic diagram of the packing layer structure of the present invention;

[0023] Figure 7 This is a schematic side view of the mounting base of the present invention.

[0024] In the figure: 1. Exhaust gas collection device; 2. Spray tower; 3. Conveying fan; 4. Chimney; 5. Tower body; 6. Liquid storage tank; 7. Packing layer; 8. Wind cap plate; 9. Wind cap; 10. Air inlet pipe; 11. Slurry circulation pump; 12. Cap body; 13. Air hole; 14. Edge; 15. Rotating shaft; 16. Fan blade; 17. Packing support seat; 18. Mounting seat; 19. Packing cylinder; 20. Fixing bolt; 21. Support bolt; 22. Reinforcement rib. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] Example 1

[0028] like Figures 1 to 7As shown, the present invention discloses a VOC gas treatment system, which adopts a technical solution including an exhaust gas collection device 1, a spray tower 2, a conveying fan 3, a chimney 4 and a control circuit. The exhaust gas collection device 1 is connected to the air inlet pipe 10 of the spray tower 2, the air outlet pipe of the spray tower 2 is connected to the conveying fan 3 and then connected to the chimney 4. A packing layer 7 is provided in the tower body 5 and a demister is provided on the top. The control circuit contains a microprocessor, which is electrically connected to the conveying fan 3. The air inlet pipe 10 has a reducing section, and the VOC gas enters the spray tower 2 after increasing the turbulence through the reducing section of the air inlet pipe 10. A liquid storage tank 6 is installed below the spray tower 2, and the spray tower 2 is connected to the liquid storage tank 6 through a drain pipe. There is a bacterial slurry in the liquid storage tank 6, and the active ingredient of the bacterial slurry is Anammox (anaerobic ammonia oxidation) bacteria. The outer sleeve of the liquid storage tank 6 is provided with a skirt, and the liquid storage tank 6 is provided with a liquid outlet pipe, and the liquid outlet pipe is connected to the bacterial slurry circulation pump 11 to enter. The outlet of the bacterial slurry circulation pump 11 is connected to a circulation pipe, which enters the spray tower 2 and is equipped with a spray head. The spray head is above the packing layer 7. The bacterial slurry circulation pump 11 transports the bacterial slurry from the liquid storage tank 6 to the circulation pipe and sprays it out through the spray head. The bacterial slurry passes through the packing layer 7 and reaches the bottom of the tower and then flows back to the liquid storage tank 6 to realize circulation. The packing layer 7 and the tower body 5 are detachably connected to facilitate the replacement of the packing; there is also a wind cap in the tower body 5 Plate 8, a hood 9 is slidably connected to the hood plate 8, and VOC gas can contact the bacterial slurry from below through the hood 9. The hood plate 8 has a leakage hole to facilitate the passage of the bacterial slurry and maintain the flow of the bacterial slurry. The hood plate 8 has a liquid level sensor, and the microprocessor is electrically connected to the liquid level sensor and the bacterial slurry circulation pump 11. The microprocessor can detect the bacterial slurry level above the hood plate 8 through the liquid level sensor, thereby controlling the speed of the bacterial slurry circulation pump 11 for adjustment.

[0029] As a preferred technical solution of the present invention, the variable diameter section includes multiple variable diameter units, and the variable diameter unit also includes a uniform portion and a changing portion. The variable diameter unit is in the shape of a Venturi tube. The VOC gas will accelerate the flow rate when passing through the changing portion and reduce the flow rate when passing through the uniform section. The speed difference directly causes an increase in the overall turbulence.

[0030] As a preferred technical solution of the present invention, there are multiple spray heads, which are evenly arranged on the circulation pipe.

[0031] As a preferred technical solution of the present invention, the packing layer 7 includes a packing support seat 17 and a packing tube 19. The packing support seat 17 is a riser type support seat. VOC gas can contact the packing through the packing tube 19. The packing tube 19 is detachably connected to the packing support seat 17. The packing tube 19 can be detached to replace the packing. The packing tube 19 is filled with activated carbon and has air holes distributed on the outer wall. VOC gas can pass through the air holes.

[0032] As an optimal technical solution of the present invention, a mounting seat 18 is detachably connected to the bottom of the filler support seat 17, and the mounting seat 18 is detachably connected to the inner wall of the tower body 5. The mounting seat 18 can be installed on the inner wall of the tower body 5 before the filler support seat 17 is installed.

[0033] As a preferred technical solution of the present invention, the mounting seat 18 is an L-shaped plate, including a horizontal plate and a vertical plate. The horizontal plate is connected to the filler support seat 17 , and the vertical plate is connected to the inner wall of the tower body 5 .

[0034] As a preferred technical solution of the present invention, the horizontal plate and the filler support seat 17 are connected by fixing bolts 20, and the vertical plate and the inner wall of the tower body 5 are connected by supporting bolts 21; reinforcing ribs 22 are installed between the horizontal plate and the vertical plate, and the mounting seat 18 can be fixed to the inner wall of the tower body 5 by the supporting bolts 21, and then the filler support seat 17 is connected to the mounting seat 18 by fixing bolts 20. The reinforcing ribs 22 can improve the overall strength of the mounting seat 18.

[0035] As an optimal technical solution of the present invention, there is a connecting pipe under the stuffing cylinder 19, the connecting pipe has an external thread, and the stuffing support seat 17 has a threaded hole that engages with the connecting pipe. The stuffing cylinder 19 can be installed by tightening the connecting pipe into the threaded hole.

[0036] As an optimal technical solution of the present invention, the hood 9 includes a cap, a cap body 12 and fan blades 16, the cap is a conical cap, the cap body 12 is a tubular structure with two ends open, one end of the cap body 12 is connected to the cap, and the other end of the cap body 12 has an outer edge 14, the cap body 12 has an air hole 13, a rotating shaft 15 is installed under the cap, and the fan blades 16 are rotatably connected to the rotating shaft 15; the hood plate 8 has a hood hole, the hood hole matches the size of the hood 9, and the hood hole has an inner edge, and the inner edge matches the size of the edge 14; VOC gas enters the cap body 12 and pushes the cap to lift the hood 9 upward, the VOC gas passes through the air hole 13 to pass through the hood 9, and the flowing VOC gas drives the fan blades 16 to rotate to further increase the turbulence.

[0037] The working principle of the present invention is as follows: the exhaust gas collection device 1 collects VOC gas and sends it into the air inlet pipe 10. After passing through the reducing section, the VOC gas enters the tower body 5 of the spray tower 2, floats upward into the cap body 12 of the hood 9 and presses the cap to make the hood 9 slide up, exposing the air hole 13. The VOC gas overflows from the air hole 13. The inner edge of the hood hole cooperates with the edge 14 to prevent the hood 9 from falling off the hood hole. At the same time, the flowing VOC The gas can blow the fan blades 16 to rotate around the rotating shaft 15, increasing the degree of turbulence of the VOC gas, so that the bacterial slurry can fully absorb the organic waste gas; the bacterial slurry circulation pump 11 extracts the bacterial slurry in the liquid storage tank 6 and transports it to the spray head for spraying. After passing through the packing layer 7, the bacterial slurry is fully in contact with the VOC gas, and leaks out from the air hole 13 and the leakage hole to be pre-mixed with the VOC gas. After the VOC gas is preliminarily treated, it enters the liquid storage tank 6 for circulation; the waste gas treated by the bacterial slurry is then filtered through the activated carbon terminal of the packing layer 7 and sent to the chimney 4 for discharge through the conveying fan 3.

[0038] The microprocessor can adjust the speed of the slurry circulation pump 11 according to the detection value of the liquid level sensor. When the liquid level is high, the speed of the slurry circulation pump 11 is reduced. When the liquid level is low, the speed of the slurry circulation pump 11 is increased.

[0039] After the processing is completed, the packing support seat 17 can be taken out by removing the fixing bolts 20, and the packing tube 19 can be removed for replacement. When there are multiple layers of packing layer 7, when removing the lower layer of packing, the support bolts 21 of the upper layer mounting seat 18 need to be removed, and then the upper layer mounting seat 18 can be removed to remove the lower layer of packing; the reinforcing ribs 22 can enhance the strength of the mounting seat 18.

[0040] The microprocessor involved in the present invention uses an Atmel 89C51 single-chip microcomputer for starting and stopping motors and analyzing data. Those skilled in the art can refer to textbooks or technical manuals published by manufacturers for technical inspiration regarding the pins and connection methods of the 89C51. The circuit connections involved in the present invention are conventional means used by those skilled in the art, and technical inspiration can be obtained through limited experiments and are common knowledge.

[0041] Components not described in detail herein are prior art.

[0042] Although the specific embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention. Modifications or deformations that do not involve creative work are still within the scope of protection of the present invention.

Claims

1. A VOC gas treatment system, comprising an exhaust gas collection device (1), a spray tower (2), a conveying fan (3), a chimney (4) and a control circuit, wherein the exhaust gas collection device (1) is connected to an air inlet pipe (10) of the spray tower (2), an air outlet pipe of the spray tower (2) is connected to the conveying fan (3) and then connected to the chimney (4), a packing layer (7) is provided in a tower body (5) of the spray tower (2), and a demister is provided above the tower body (5), a microprocessor is provided in the control circuit, and the microprocessor is electrically connected to the conveying fan (3), and is characterized in that: The air inlet pipe (10) has a diameter-reducing section, a liquid storage tank (6) is installed below the spray tower (2), and the spray tower (2) is connected to the liquid storage tank (6) through a liquid discharge pipe, the liquid storage tank (6) contains bacterial slurry, the liquid storage tank (6) is sheathed with a skirt, the liquid storage tank (6) is equipped with a liquid outlet pipe, the liquid outlet pipe is connected to the inlet of the bacterial slurry circulation pump (11), the outlet of the bacterial slurry circulation pump (11) is connected to a circulation pipe, and the circulation The pipe enters the spray tower (2), and a spray head is installed on the circulation pipe, the spray head is above the packing layer (7), and the packing layer (7) and the tower body (5) are detachably connected; there is also a hood plate (8) in the tower body (5), a hood (9) is slidably connected in the hood plate (8), a liquid leakage hole is provided on the hood plate (8), a liquid level sensor is provided on the hood plate (8), the microprocessor and the liquid level sensor, the bacteria The slurry circulation pump (11) is electrically connected; the variable diameter section includes a plurality of variable diameter units, and the variable diameter unit also includes a uniform portion and a variable portion, the diameters of the two ends of the variable portion are the same as the diameter of the uniform portion, the diameter of the middle portion is smaller than the diameter of the uniform portion, and the length of the uniform portion is extended; the hood (9) includes a cap, a cap body (12) and a fan blade (16), the cap is a conical cap, the cap body (12) is a tubular structure with two ends open, one end of the cap body (12) is connected to the cap, the other end of the cap body (12) has an outer edge (14), the cap body (12) has an air hole (13), a rotating shaft (15) is installed below the cap, and the fan blade (16) is rotatably connected to the rotating shaft (15); the hood plate (8) has a hood hole, the hood hole matches the size of the hood (9), and the hood hole has an inner edge, and the inner edge matches the size of the edge (14).

2. A VOC gas treatment system according to claim 1, characterized in that: There are multiple spray heads, which are evenly arranged on the circulation pipe.

3. The VOC gas treatment system according to claim 1, characterized in that: The packing layer (7) comprises a packing support seat (17) and a packing cylinder (19); the packing support seat (17) is a riser-type support seat; the packing cylinder (19) is detachably connected to the packing support seat (17); the packing cylinder (19) is filled with packing, and air holes are distributed on the outer wall.

4. A VOC gas treatment system according to claim 3, characterized in that: A mounting seat (18) is detachably connected below the filler support seat (17), and the mounting seat (18) is detachably connected to the inner wall of the tower body (5).

5. A VOC gas treatment system according to claim 4, characterized in that: The mounting seat (18) is an L-shaped plate, comprising a horizontal plate and a vertical plate, wherein the horizontal plate is connected to the filler support seat (17), and the vertical plate is connected to the inner wall of the tower body (5).

6. A VOC gas treatment system according to claim 5, characterized in that: The horizontal plate is connected to the filler support seat (17) via fixing bolts (20), and the vertical plate is connected to the inner wall of the tower body (5) via supporting bolts (21); reinforcing ribs (22) are installed between the horizontal plate and the vertical plate.

7. The VOC gas treatment system according to claim 3, characterized in that: A connecting pipe is provided below the filling cylinder (19), the connecting pipe has an external thread, and the filling support seat (17) has a threaded hole engaged with the connecting pipe.

Images