VOCs organic waste gas purification system

Abstract

The invention relates to the technical field of waste gas treatment, in particular to a VOCS organic waste gas purification system which comprises a pretreatment box, a combustion box, a spraying box, a photolysis box and a condensation box, an access pipe is arranged in the pretreatment box in a sleeved mode, a purification cover is arranged outside the access pipe in a sleeved mode, a preheating cover is arranged outside the purification cover in a sleeved mode, and a combustion engine is fixedly installed at the top of the combustion box. Spoilers are installed in the combustion box in a staggered mode, fixing pipes fixedly sleeve the four corners of the spraying box, the bottoms of the fixing pipes are fixedly connected with moving pipes through hoses, two-way spraying pipes are fixedly installed on the two sides of the moving pipes, a UV lamp tube is installed in the photolysis box, and a condensation pipe is arranged in the condensation box; the VOCs organic waste gas purification system has the beneficial effects that the VOCs organic waste gas purification system is reasonable in structural design, spraying, UV photolysis, condensation and adsorption are ingeniously connected in series into a whole, the advantages and disadvantages of various treatment modes are complemented, the VOCs organic waste gas is subjected to multi-stage purification, the purification effect is greatly improved, and the application range is wide.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a VOCs organic waste gas purification system. Background Art

[0002] VOCs (volatile organic compounds), according to the definition of the World Health Organization (WHO), refer to organic compounds with a saturated vapor pressure greater than 133.32 Pa at room temperature and a boiling point below 50-260°C at normal pressure, or any organic compound that can volatilize at normal temperature and pressure. In the existing technology, the purification technologies commonly used in industry include adsorption, absorption, condensation, spraying, combustion, plasma, UV photolysis and other methods to treat VOCs organic waste gas, but most of the above methods have problems such as low efficiency, high cost, and unsatisfactory purification effect. For example, the spraying method has poor spraying effect and insufficient waste gas treatment; the UV photolysis method is only suitable for low-concentration waste gas purification, and the existing UV photolysis device has uneven light distribution, which makes it difficult to purify the gas in all directions; the condensation method has a short waste gas condensation time and unsatisfactory condensation effect; activated carbon adsorption, the traditional device has the problem of difficulty in replacing activated carbon. In summary, the individual VOCs organic waste gas purification technologies have their own advantages and disadvantages, and the purification efficiency cannot be guaranteed. Summary of the invention

[0001] The purpose of the present invention is to provide a VOCs organic waste gas purification system to solve the problems raised in the above background technology.

[0002] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a VOCs organic waste gas purification system, comprising: a pretreatment box, a combustion box, a spray box, a photolysis box, and a condensation box. The pretreatment box is provided with an access pipe, the access pipe is provided with a purification hood outside, and the purification hood is provided with a preheating hood outside.

[0003] A burner is fixedly installed on the top of the combustion box, and spoilers are staggeredly installed inside the combustion box.

[0004] Fixed pipes are arranged at the four corners of the spray box, the bottom of the fixed pipes is fixedly connected with the movable pipes through hoses, and two-way spray pipes are fixedly installed on both sides of the movable pipes.

[0005] UV lamps are installed in the photolysis box.

[0006] A condenser tube is arranged in the condenser box.

[0007] Preferably, one end of the pretreatment box is fixedly mounted on the outer ring surface of the access pipe, and the other end of the pretreatment box is connected to the combustion box through a fan. Three filter discs are fixedly installed in the access pipe and the filter discs are arranged in a linear array. The access pipe and the purification hood are fixedly connected by a fixed block, and an activated carbon ring plate is provided on one side of the fixed block.

[0008] Preferably, the outer ring surface of the activated carbon ring plate is fixedly connected to the inner wall of the purification hood, the inner ring surface of the activated carbon ring plate is fixedly sleeved on the outer ring surface of the access tube, the preheating hood is arranged outside the purification hood and one end of the preheating hood is fixedly sleeved on the outer ring surface of the access tube, the inner ring surface of the preheating hood is fixedly connected to a heat conduction plate, the outer ring surface of the preheating hood is fixedly connected to the pretreatment box, and electric heating tubes are arranged in an array on the inner circumference of the heat conduction plate.

[0009] Preferably, a gas pipeline is provided on one side of the electric heating tube, and an air pipeline is installed opposite to the gas pipeline. One end of the gas pipeline and the air pipeline are fixedly mounted in the combustion box. A slag box is slidably inserted into the bottom of the combustion box. One side of the combustion box is connected to one side of the spray box through a fan, and the other side of the spray box is connected to the photolysis box through a gas-liquid separator.

[0010] Preferably, a filter plate is fixedly installed at the bottom of the spray box, a rust-proof threaded rod is provided on the upper side of the filter plate, the top of the rust-proof threaded rod passes through the spray box and is fixedly connected to the output end of the synchronous motor, and the synchronous motor is fixedly installed on the upper surface of the spray box.

[0011] Preferably, a connecting sleeve is provided on the rust-proof threaded rod, one side of the connecting sleeve is fixedly connected to the moving pipe, a recovery box is fixedly installed at the bottom of the spray box, and a perforated plate air pipe is provided on one side of the recovery box.

[0012] Preferably, one end of the orifice plate air pipe is fixedly sleeved in the photolysis box, and the other end of the orifice plate air pipe is fixedly sleeved in the condensation box, and the UV lamp tube is fixedly installed on the top of the photolysis box and is arranged in a circular array.

[0013] Preferably, a condenser is provided in a fixed sleeve inside the condenser box and the condenser is in a tower shape, the input and output ends of the condenser pass through the condenser box and are connected to an external condensation device, a secondary adsorption cylinder is provided in a fixed sleeve on one side of the outer ring surface of the condenser box, and a stuffing box is fixedly installed in the secondary adsorption cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: a VOCs organic waste gas purification system provided by the present invention has a reasonable structural design, and cleverly integrates spraying, UV photolysis, condensation, and adsorption in series. The advantages and disadvantages of various treatment methods complement each other, and VOCs organic waste gas is purified in multiple stages, which greatly improves the purification effect and has a wide range of applications; the VOCs organic waste gas first flows into the pretreatment box through the access pipe for pretreatment, and is first preliminarily filtered through the filter disc in the access pipe to filter out some particulate impurities, and then is preliminarily purified through the purification hood, and then the gas entering the combustion box is preheated through the preheating hood, which is beneficial to improving the combustion efficiency, and the gas entering the combustion box is burned by the burner, and staggered spoilers are fixedly installed inside the combustion box. The setting of the spoiler can prolong the time for the exhaust gas to flow in the combustion box and increase the exhaust gas combustion time, which is beneficial to converting more exhaust gas into carbon dioxide and water, and the remaining gas enters the spray box, and the spray box The fixed pipes fixedly installed at the four corners of the top are connected to one end of the external water pipe, the other end of the water pipe is connected to the output end of the water pump, and the input end of the water pump is connected to the water tank, so that water can be pumped into the fixed pipe, and the water flows into the mobile pipe under the connection of the hose. The mobile pipe can move up and down inside the spray box, thereby driving the two-way spray pipe fixedly connected to it to move synchronously, and the water flows from the mobile pipe into the two-way spray pipe, so that the two-way spray pipe sprays the water from both sides. Since the two-way spray pipe is arranged in a rectangular array, the sprayed water forms a "water cloth", which can cover the exhaust gas and greatly reduce the exhaust gas concentration. Then the exhaust gas after spraying passes through the gas-liquid separator for gas-liquid separation, and then enters the photolysis box, where a chemical reaction occurs under the irradiation of the UV lamp, and most of the organic matter in the exhaust gas is degraded. Then it enters the condensation box for condensation treatment, and finally the condensed exhaust gas enters the secondary adsorption cylinder for adsorption treatment, and the gas after adsorption and purification is discharged from the air outlet of the secondary adsorption cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a schematic top view of the overall structure of the present invention;

[0017] Figure 3 It is a schematic diagram of the internal section of the pretreatment box of the present invention;

[0018] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0019] Figure 5 It is a bottom view schematic diagram of the internal structure of the present invention;

[0020] Figure 6 It is a schematic side view of the internal structure of the present invention.

[0021] In the figure: 1. pretreatment box; 2. combustion box; 3. spray box; 4. photolysis box; 5. condensation box; 6. access pipe; 7. purification hood; 8. preheating hood; 9. burner; 10. spoiler; 11. fixed pipe; 12. hose; 13. movable pipe; 14. two-way spray pipe; 15. UV lamp tube; 16. condenser tube; 17. fan; 18. fixed block; 19. activated carbon ring plate; 20. heat conduction plate; 21. electric heating pipe; 22. gas pipeline; 23. air pipeline; 24. slag box; 25. gas-liquid separator; 26. filter plate; 27. rust-proof threaded rod; 28. connecting sleeve; 29. ​​recovery box; 30. orifice plate gas pipe; 31. secondary adsorption cylinder; 32. stuffing box; 33. filter disc. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-Figure 6 The present invention provides a technical solution: a VOCs organic waste gas purification system, comprising: a pretreatment box 1, a combustion box 2, a spray box 3, a photolysis box 4, and a condensation box 5. The pretreatment box 1 is provided with an access pipe 6, the access pipe 6 is provided with a purification cover 7 on the outside, the purification cover 7 is provided with a preheating cover 8 on the outside, a burner 9 is fixedly installed on the top of the combustion box 2, spoilers 10 are staggeredly installed inside the combustion box 2, fixed pipes 11 are fixedly installed at the four corners of the spray box 3, the bottom of the fixed pipe 11 is fixedly connected to the mobile pipe 13 through a hose 12, and two-way spray pipes 14 are fixedly installed on both sides of the mobile pipe 13, a UV lamp tube 15 is installed in the photolysis box 4, and a condensation pipe 16 is arranged in the condensation box 5.

[0024] VOCs organic waste gas first flows into the pretreatment box 1 through the access pipe 6 for pretreatment, and first passes through the filter disc 33 in the access pipe 6 to filter out some particulate impurities, then passes through the purification cover 7 for preliminary purification, and then passes through the preheating cover 8 to preheat the gas entering the combustion box 2, which is beneficial to improve the combustion efficiency. The gas entering the combustion box 2 is burned by the burner 9. The combustion box 2 is fixedly equipped with staggered spoilers 10. The setting of the spoiler 10 can extend the time for the waste gas to flow in the combustion box 2 and increase the combustion time of the waste gas, which is beneficial to convert more waste gas into carbon dioxide and water. The remaining gas enters the spray box 3. The fixed pipes 11 fixedly installed at the four corners of the top of the spray box 3 are connected to one end of the external water pipe, and the other end of the water pipe is connected to the output end of the water pump, and the input end of the water pump is connected to the water tank, so that water can be pumped into the fixed pipe 11, water flows into the movable pipe 13 under the connection of the hose 12. The movable pipe 13 can move up and down inside the spray box 3, thereby driving the two-way spray pipe 14 fixedly connected thereto to move synchronously, and the water flows from the movable pipe 13 into the two-way spray pipe 14, so that the two-way spray pipe 14 sprays the water from both sides. Since the two-way spray pipes 14 are arranged in a rectangular array, the sprayed water forms a "water cloth", which can cover the exhaust gas and greatly reduce the exhaust gas concentration. The exhaust gas after spraying is then separated from the exhaust gas by the gas-liquid separator 25, and then enters the photolysis box 4. A chemical reaction occurs under the irradiation of the UV lamp 15, and most of the organic matter in the exhaust gas is degraded. Then, the exhaust gas enters the condensation box 5 for condensation treatment. Finally, the condensed exhaust gas enters the secondary adsorption cylinder 31 for adsorption treatment, and the gas after adsorption and purification is discharged from the air outlet of the secondary adsorption cylinder 31.

[0025] Embodiment 2: On the basis of embodiment 1, one end of the pretreatment box 1 is fixedly sleeved on the outer ring surface of the access pipe 6, and the other end of the pretreatment box 1 is connected to the combustion box 2 through the fan 17. Three filter discs 33 are fixedly installed in the access pipe 6 and the filter discs 33 are arranged in a linear array. The access pipe 6 and the purification hood 7 are fixedly connected by a fixed block 18. An activated carbon ring plate 19 is arranged on one side of the fixed block 18. One end of the access pipe 6 is connected to the outlet of the exhaust gas pipe, and the other end of the access pipe 6 is fixedly sleeved in the pretreatment box 1. Three filter discs 33 are arranged in a linear array inside the access pipe 6. The filter holes of the filter discs 33 decrease from the outside to the inside, so as to facilitate the preliminary filtering of particles of different sizes. One side of the fixed block 18 is fixedly connected to the outer ring surface of the access pipe 6, and the other side of the fixed block 18 is fixedly connected to the inner ring surface of the purification hood 7. The activated carbon ring plate 19 is arranged It is arranged on both sides of the fixed block 18, the outer ring surface of the activated carbon ring plate 19 is fixedly connected to the inner wall of the purification hood 7, the inner ring surface of the activated carbon ring plate 19 is fixedly sleeved on the outer ring surface of the access pipe 6, the preheating hood 8 is arranged outside the purification hood 7 and one end of the preheating hood 8 is fixedly sleeved on the outer ring surface of the access pipe 6, the inner ring surface of the preheating hood 8 is fixedly connected with a heat conducting plate 20, the outer ring surface of the preheating hood 8 is fixedly connected to the pretreatment box 1, and the inner circumferential array of the heat conducting plate 20 is arranged with electric heating pipes 21, the activated carbon ring plate 19 is fixedly sleeved on the inner ring surface of the purification hood 7, the outer ring surface of the preheating hood 8 is fixedly connected to the inner wall of the pretreatment box 1, so as to fix the preheating hood 8, so that the preheating hood 8 fixes the heat conducting plate 20, and the inner circumferential array of the heat conducting plate 20 is arranged with electric heating pipes 21, the heat conducting plate 20 is heated by the electric heating pipes 21, and the electric heating pipes 21 are electrically connected to the external terminal control device.

[0026] One end of the access pipe 6 is connected to the exhaust pipe outlet, and the other end of the access pipe 6 is fixedly sleeved in the pretreatment box 1. The exhaust gas first flows into the pretreatment box 1 through the access pipe 6. When the exhaust gas flows in the access pipe 6, the three filter discs 33 installed in the access pipe 6 first filter the particles of the exhaust gas. The aperture size of the filter disc 33 decreases from the outside to the inside, so that it is easy to filter particles of different sizes. Then the exhaust gas enters the purification cover 7. The activated carbon ring plate 19 is fixedly sleeved in the purification cover 7. The activated carbon ring plate 19 is used for the first purification. Then the first purified exhaust gas enters the preheating hood 8, and the heat conducting plate 20 is heated by the electric heating tube 21 in the preheating hood 8, so that heat is conducted through the heat conducting plate 20, and then the exhaust gas is preheated, which is beneficial to improve the exhaust gas combustion rate. The preheated exhaust gas enters the combustion box 2 through the fan 17, and the air flow lines of the access pipe 6, the purification hood 7, and the preheating hood 8 are arranged in an "S", so that the processing time of the exhaust gas in the pretreatment box 1 can be extended, thereby improving the pretreatment quality of the exhaust gas, and then helping to improve the subsequent exhaust gas pretreatment effect.

[0027] Embodiment 3: On the basis of embodiment 2, a gas pipeline 22 is provided on one side of the electric heating tube 21, and an air pipeline 23 is installed opposite to the gas pipeline 22. One end of the gas pipeline 22 and the air pipeline 23 are fixedly mounted in the combustion box 2, and a slag box 24 is slidably inserted at the bottom of the combustion box 2. One side of the combustion box 2 is connected to one side of the spray box 3 through the fan 17, and the other side of the spray box 3 is connected to the photolysis box 4 through the gas-liquid separator 25.

[0028] The exhaust gas after the first purification enters the combustion box 2 through the fan 17 under the preheating of the preheating hood 8. A burner 9 is installed in the middle of the top side of the combustion box 2. One side of the top of the combustion box 2 is connected to the gas pipeline 22, and the other side of the top of the combustion box 2 is connected to the air pipeline 23. By introducing gas and air into the combustion box 2 while the burner 9 burns the exhaust gas, the combustion-supporting effect can be improved, and the exhaust gas is promoted to be fully catalyzed into carbon dioxide and water, thereby preliminarily reducing the exhaust gas concentration and reducing the subsequent exhaust gas outflow. At the same time, staggered spoilers 10 are installed in the combustion box 2, which can disturb and block the exhaust gas entering the combustion box 2, thereby increasing the residence time of the exhaust gas in the combustion box 2 and further improving the combustion rate of the exhaust gas. The exhaust gas after combustion enters the spray box 3 through the fan 17.

[0029] Embodiment 4: On the basis of embodiment 3, a filter plate 26 is fixedly installed at the bottom of the spray box 3, and a rust-proof threaded rod 27 is arranged on the upper side of the filter plate 26. The top of the rust-proof threaded rod 27 passes through the spray box 3 and is fixedly connected to the output end of the synchronous motor. The synchronous motor is fixedly installed on the upper surface of the spray box 3, and then the exhaust gas enters the spray box 3 for spraying and impurity removal. The filter plate 26 fixedly installed at the bottom of the spray box 3 is used to filter impurities. The rust-proof threaded rod 27 is rotatably sleeved on the top of the spray box 3. Four rust-proof threaded rods 27 are arranged in a rectangular array. The tops of the rust-proof threaded rods 27 are all fixedly connected to the output end of the synchronous motor. The rust-proof threaded rods 27 are sleeved with connecting rods. A connecting sleeve 28, one side of the connecting sleeve 28 is fixedly connected to the mobile pipe 13, a recovery box 29 is fixedly installed at the bottom of the spray box 3, and a perforated air pipe 30 is arranged on one side of the recovery box 29. A connecting sleeve 28 is threadedly sleeved on the rust-proof threaded rod 27, and one side of the connecting sleeve 28 is fixedly connected to the mobile pipe 13. The top of the mobile pipe 13 is connected to the fixed pipe 11 through a retractable hose 12. The fixed pipe 11 is connected to one end of the water pipe, and the other end of the water pipe is fixedly connected to the output end of the pump body, and the input end of the pump body is connected to the water tank, so that water can be pumped into the fixed pipe 11. Both sides of the mobile pipe 13 are fixedly connected to the two-way spray pipe 14, and a number of spray heads are installed on both sides of the two-way spray pipe 14.

[0030] The water in the water tank is pumped into the fixed pipe 11, and the water is injected into the mobile pipe 13 through the connection of the retractable hose 12. The water is then pumped from the mobile pipe 13 into the two-way spray pipe 14, so that the water is sprayed out to spray and remove impurities from the exhaust gas. Since the two-way spray pipes 14 are arranged in a rectangular array, a "water cloth" is formed between the four two-way spray pipes 14 when the two-way spray pipes 14 spray, thereby covering the exhaust gas, thereby expanding the contact area between the water and the exhaust gas. At the same time, when spraying, the synchronous motor is started intermittently. The rust-proof threaded rod 27 rotates forward and reversely, thereby driving the rust-proof threaded rod 27 to rotate, and the rust-proof threaded rod 27 drives the connecting sleeve 28 mounted thereon to move, so that the connecting sleeve 28 drives the moving tube 13 to reciprocate along the axial direction, and then the moving tube 13 drives the two-way spray pipe 14 to reciprocate up and down, so that the "water cloth" can fully contact with the exhaust gas in the process of moving up and down, thereby greatly reducing the exhaust gas concentration, and the exhaust gas can be centrally sprayed under the cover of the "water cloth", effectively improving the spraying effect, and greatly reducing the concentration of organic waste gas.

[0031] Embodiment 5: On the basis of embodiment 4, one end of the orifice plate air pipe 30 is fixedly mounted in the photolysis box 4, and the other end of the orifice plate air pipe 30 is fixedly mounted in the condensation box 5. The UV lamp tubes 15 are fixedly installed on the top of the photolysis box 4 and are arranged in a circular array. The waste gas after spraying passes through the gas-liquid separator 25 for gas-liquid separation and then enters the photolysis box 4. A plurality of UV lamp tubes 15 are arranged in a circular array on the top of the photolysis box 4. The UV lamp tubes 15 are electrically connected to an external terminal control device. A chemical reaction occurs under the irradiation of UV light, and most of the organic matter in the waste gas is degraded into harmless inorganic compounds such as water and carbon dioxide.

[0032] Embodiment 6: On the basis of Embodiment 5, a condenser tube 16 is fixedly sleeved in the condenser box 5 and is in a tower shape. The input and output ends of the condenser tube 16 penetrate the condenser box 5 and are connected to an external condensation device. A secondary adsorption cylinder 31 is fixedly sleeved on one side of the outer ring surface of the condenser box 5. A stuffing box 32 is fixedly installed in the secondary adsorption cylinder 31. The waste gas after photolysis enters the condenser box 5 through the orifice plate air pipe 30 for condensation treatment. The input and output ends of the condenser tube 16 are connected to an external condensation device. The condenser tube 16 is arranged in a ring-shaped tower shape. The waste gas just enters When entering the condensation box 5, it will begin to sink, so that the contact area between the exhaust gas and the condensation tube 16 can be gradually increased through the tower-shaped condensation tube 16, which can fully extend the condensation time and allow the condensation medium to fully act on the organic waste gas in the condensation box 5. Finally, the exhaust gas coming out of the condensation box 5 enters the secondary adsorption cylinder 31, and the secondary adsorption cylinder 31 is provided with a stuffing box 32. The stuffing box 32 is filled with fillers such as activated carbon, zeolite, and molecular sieves, so that the exhaust gas is subjected to secondary adsorption treatment, and the gas after adsorption and purification is discharged from the air outlet of the secondary adsorption cylinder 31.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A VOCs organic waste gas purification system, comprising a pretreatment box (1), a combustion box (2), a spray box (3), a photolysis box (4), and a condensation box (5), characterized in that: The pretreatment box (1) is provided with an access pipe (6) in a sleeve, the access pipe (6) is provided with a purification cover (7) in a sleeve, and the purification cover (7) is provided with a preheating cover (8) in a sleeve; A burner (9) is fixedly mounted on the top of the combustion box (2), and spoilers (10) are staggeredly mounted inside the combustion box (2); The four corners of the spray box (3) are fixedly sleeved with fixed pipes (11), the bottom of the fixed pipe (11) is fixedly connected to the movable pipe (13) through a hose (12), and two-way spray pipes (14) are fixedly installed on both sides of the movable pipe (13); A UV lamp tube (15) is installed in the photolysis box (4); A condensation pipe (16) is arranged in the condensation box (5).

2. A VOCs organic waste gas purification system according to claim 1, characterized in that: One end of the pretreatment box (1) is fixedly sleeved on the outer surface of the access pipe (6), and the other end of the pretreatment box (1) is connected to the combustion box (2) through a fan (17). Three filter discs (33) are fixedly installed in the access pipe (6) and the filter discs (33) are arranged in a linear array. The access pipe (6) and the purification cover (7) are fixedly connected by a fixing block (18), and an activated carbon ring plate (19) is arranged on one side of the fixing block (18).

3. A VOCs organic waste gas purification system according to claim 2, characterized in that: The outer ring surface of the activated carbon ring plate (19) is fixedly connected to the inner wall of the purification cover (7), the inner ring surface of the activated carbon ring plate (19) is fixedly sleeved on the outer ring surface of the access pipe (6), the preheating cover (8) is arranged outside the purification cover (7) and one end of the preheating cover (8) is fixedly sleeved on the outer ring surface of the access pipe (6), the inner ring surface of the preheating cover (8) is fixedly connected to a heat conducting plate (20), the outer ring surface of the preheating cover (8) is fixedly connected to the pretreatment box (1), and electric heating tubes (21) are arranged in an array on the inner circumference of the heat conducting plate (20).

4. A VOCs organic waste gas purification system according to claim 3, characterized in that: A gas pipeline (22) is provided on one side of the electric heating tube (21), and an air pipeline (23) is installed opposite to the gas pipeline (22). One end of the gas pipeline (22) and the air pipeline (23) are fixedly sleeved in the combustion box (2). A slag receiving box (24) is slidably inserted at the bottom of the combustion box (2). One side of the combustion box (2) is connected to one side of the spray box (3) through a fan (17), and the other side of the spray box (3) is connected to the photolysis box (4) through a gas-liquid separator (25).

5. A VOCs organic waste gas purification system according to claim 4, characterized in that: A filter plate (26) is fixedly mounted on the bottom of the spray box (3), a rust-proof threaded rod (27) is arranged on the upper side of the filter plate (26), the top of the rust-proof threaded rod (27) passes through the spray box (3) and is fixedly connected to the output end of the synchronous motor, and the synchronous motor is fixedly mounted on the upper surface of the spray box (3).

6. A VOCs organic waste gas purification system according to claim 5, characterized in that: The rust-proof threaded rod (27) is sleeved with a connecting sleeve (28), one side of the connecting sleeve (28) is fixedly connected to the moving pipe (13), a recovery box (29) is fixedly installed at the bottom of the spray box (3), and one side of the recovery box (29) is provided with a perforated plate air pipe (30).

7. A VOCs organic waste gas purification system according to claim 6, characterized in that: One end of the orifice plate air pipe (30) is fixedly sleeved in the photolysis box (4), and the other end of the orifice plate air pipe (30) is fixedly sleeved in the condensation box (5). The UV lamp tube (15) is fixedly installed on the top of the photolysis box (4) and is arranged in a circular array.

8. A VOCs organic waste gas purification system according to claim 7, characterized in that: A condenser tube (16) is fixedly sleeved inside the condenser box (5) and is in a tower shape. The input and output ends of the condenser tube 16 pass through the condenser box (5) and are connected to an external condensation device. A secondary adsorption cylinder (31) is fixedly sleeved on one side of the outer ring surface of the condenser box (5), and a stuffing box (32) is fixedly installed inside the secondary adsorption cylinder (31).

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