A VOC gas combustion purification device and method for shipbuilding

Abstract

The present invention discloses a VOC gas combustion purification device and method for shipbuilding, including a flue gas filtration component, a guiding pipe, a delivery pump, a combustion purification component, a gas storage tank and a sealing cover. A flue gas filtration component is added in the device. Bubbles are blown into the filtration solution at the inner bottom end of the soot filtration pipe by the bubbling pipe in the filtration sleeve. The soot in the VOC gas is filtered by the filtration solution, and the moisture in the gas is assisted to be filtered by the drying filler in the packing plate, so that the content of solid impurities in the gas for combustion purification is greatly minimized. The combusted gas enters the circulation pipe through the outlet gas pipe and the outlet seat, and re-enters the buffer tank from the air inlet groove, and is ready to carry out catalytic combustion again. After multiple catalytic combustions, it is ensured that the VOC components in the gas can be effectively reduced to the lowest level, thus completing the combustion purification.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and particularly relates to a VOC gas combustion purification device and method for shipbuilding. Background Art

[0002] VOC is the English abbreviation of volatile organic compounds, which generally refers to volatile organic substances. However, in the sense of environmental protection, it refers to a class of active volatile organic substances, that is, the class of volatile organic substances that will cause harm. VOC gases mainly come from fuel combustion and transportation. Indoors, they mainly come from combustion products such as coal and natural gas, smoking, fumes from heating and cooking, emissions from building and decoration materials, furniture, household appliances, cleaning agents, and the human body itself.

[0003] The patent number CN201810913463.5 provides a purification treatment device for removing VOCs. When the adsorption unit is close to or reaches saturation, its adsorption capacity can be restored by heating it, which helps to improve the photocatalytic reaction effect. In addition, the harmful substances released from the adsorption unit can be photocatalytically decomposed or directly discharged safely, so as to prevent the adsorbed harmful substances from being released into the indoor environment again. In addition, the VOC purification treatment device can be controlled manually or automatically, so that it can operate only in a certain working mode or simultaneously in multiple working modes according to application needs, and the operation control strategy is very flexible and convenient.

[0004] However, the above patent has the following problems

[0005] 1. During the combustion purification process of VOC gases, incomplete combustion may occur, resulting in poor gas purification effect;

[0006] 2. After the VOC gases are extracted, since there may be solid soot in the gases, if this type of solid soot is not removed, it is likely to affect the subsequent combustion purification of VOC gases, resulting in incomplete combustion of the gases. Summary of the Invention

[0007] The object of the present invention is to provide a VOC gas combustion purification device and method for shipbuilding. Bubbles are blown into the filtering solution at the inner bottom end of the soot filtering tube by a bubbling tube in a filtering sleeve. The soot in the VOC gas is filtered by the filtering solution, and the moisture in the gas is assisted to be filtered by the drying filler in the packing plate. The filtered gas is transported to the combustion purification component through a guiding tube and a delivery pump, and is temporarily stored in a buffer tank in the core purification component through an inner connecting tube and an auxiliary pump. The gas is extracted by an air extraction pump and an air extraction head and transported upward, so that the gas passes through a catalyst sleeve to contaminate the combustion catalyst in the catalyst plate. Finally, the gas enters the combustion chamber upward, and the flame is sprayed by a flame nozzle for combustion. The combustion gas enters the circulation tube through an outlet gas pipe and an outlet seat, and re-enters the buffer tank from the air inlet groove, and is ready for catalytic combustion again, so as to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A VOC gas combustion purification device for shipbuilding, including a flue gas filtering component, a guiding tube, a delivery pump, a combustion purification component, a gas storage tank and a sealing cover. The guiding tube is installed at the top of the flue gas filtering component, a delivery pump is provided on the guiding tube, the combustion purification component is installed at the end of the guiding tube, the gas storage tank is installed at the top of the combustion purification component, and the sealing cover is installed at the top of the gas storage tank.

[0010] Preferably, the flue gas filtering component includes a snap base, a threaded inlet pipe, a filtering sleeve, an inner delivery pipe, a soot filtering tube, a permeable partition, permeation holes, a bubbling tube, a packing plate and an outer delivery pipe. The threaded inlet pipe is installed at the lower left side of the snap base, the filtering sleeve is installed in the snap base, the inner delivery pipe is connected to the inner side of the threaded inlet pipe, the soot filtering tube is installed at the end of the inner delivery pipe, a permeable partition is provided at the inner center of the soot filtering tube, permeation holes are provided on the permeable partition, the bubbling tube is installed at the inner bottom end of the soot filtering tube, the packing plate is installed on the inner wall of the upper half of the soot filtering tube, and the outer delivery pipe is installed at the top of the soot filtering tube.

[0011] Preferably, the combustion purification component includes a main housing, an inner connecting tube, an auxiliary pump, a core purification component, a pipe clamp sleeve, a circulation tube, a circulation pump and a heat dissipation component. The inner connecting tube is installed at the upper left side inside the main housing, the auxiliary pump is installed on the inner connecting tube, the core purification component is installed at the end of the inner connecting tube, the pipe clamp sleeve is installed on the right side of the main housing, the circulation tube is installed in the pipe clamp sleeve, a circulation pump is provided at the center of the circulation tube, and the heat dissipation component is installed at the lower right side of the main housing.

[0012] Preferably, the core purification component includes a component housing, an isolation jacket plate, a connecting pipe, a combustion chamber, an outlet gas pipe, an outlet seat, an air extraction pump, a buffer tank, an air extraction head, an air inlet groove, and a ventilation base. An isolation jacket plate is provided at the center inside the component housing. A combustion chamber is installed inside the isolation jacket plate. A connecting pipe is provided at the top of the combustion chamber. An outlet gas pipe is provided on the right side of the combustion chamber. The end of the outlet gas pipe is connected to the outlet seat. An air extraction pump is installed at the bottom of the combustion chamber. A buffer tank is provided below the air extraction pump. An air extraction head is installed on the inner wall of the buffer tank at the location of the air extraction pump. The right side of the buffer tank is connected to the air inlet groove. A ventilation base is provided at the bottom of the buffer tank.

[0013] Preferably, the combustion chamber includes a heat insulation housing, a buckle base, a flame nozzle, a gas pipe interface, a catalyst sleeve, a sleeve screw, a folding plate buckle, and a catalyst plate. A buckle base is provided at the top inside the heat insulation housing. A flame nozzle is installed on the buckle base. A gas pipe interface is provided on the right side of the heat insulation housing. A catalyst sleeve is installed at the bottom of the heat insulation housing. Sleeve screws are respectively installed at the left and right ends of the bottom of the catalyst sleeve. A folding plate buckle is provided on the inner wall of the catalyst sleeve. A catalyst plate is installed on the folding plate buckle.

[0014] Preferably, the heat dissipation component includes a heat dissipation base, a base bolt, a heat dissipation housing, a heat dissipation hole, a motor clamp, a positioning nut, a heat dissipation motor, and a heat dissipation fan blade. A base bolt is installed on the side of the heat dissipation base. A heat dissipation housing is provided on the right side of the heat dissipation base. A heat dissipation hole is provided at the right end of the heat dissipation housing. A motor clamp is installed on the heat dissipation housing. A positioning nut is installed on the outside of the motor clamp. A heat dissipation motor is installed inside the motor clamp. A heat dissipation fan blade is installed on the heat dissipation motor.

[0015] The present invention provides another technical solution: an implementation method of a VOC gas combustion purification device for shipbuilding, including the following steps:

[0016] Step 1: Connect the threaded inlet pipe on the side of the flue gas filtration component to the equipment for shipbuilding, so that the VOC gas in the shipbuilding equipment first enters the filtration sleeve.

[0017] Step 2: Bubble air into the filtration solution at the inner bottom end of the soot filtration pipe through the bubble pipe in the filtration sleeve. Filter the soot in the VOC gas with the filtration solution, and assist in filtering the moisture in the gas with the dry filler in the filler plate.

[0018] Step 3: The filtered gas is transported to the combustion purification component through the guiding pipe and the delivery pump, and is transported to the buffer tank in the core purification component through the inner connecting pipe and the auxiliary pump for temporary storage.

[0019] Step 4: The air pump and the air extraction head extract the gas and convey it upward, so that the gas passes through the catalyst sleeve to burn the catalyst in the contaminated catalyst plate. Finally, the gas enters the combustion chamber upward and is burned by the flame nozzle spraying the flame;

[0020] Step 5: The burned gas enters the circulation pipe through the outlet gas pipe and the outlet seat, and re-enters the buffer tank from the air inlet groove, and is ready to carry out catalytic combustion again.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. For a VOC gas combustion purification device and method for shipbuilding proposed by the present invention, in the prior art, during the combustion purification process of VOC gas, incomplete combustion may occur, resulting in poor gas purification effect. In the present invention, the burned gas enters the circulation pipe through the outlet gas pipe and the outlet seat, and re-enters the buffer tank from the air inlet groove, and is ready to carry out catalytic combustion again. After multiple catalytic combustions, the VOC components in the gas can be effectively reduced to the lowest level, thus completing the combustion purification;

[0023] 2. For a VOC gas combustion purification device and method for shipbuilding proposed by the present invention, in the prior art, after the VOC gas is extracted, since there may be solid soot in the gas, if this type of solid soot is not removed, it is likely to affect the subsequent combustion purification of the VOC gas, resulting in the problem of incomplete gas combustion. In the present invention, a new flue gas filtration component is added. Bubbles are blown into the filtration solution at the bottom inside the soot filtration pipe by the bubbling pipe in the filtration sleeve. The filtration solution filters the soot in the VOC gas, and the dry filler in the filler plate assists in filtering the moisture in the gas, so that the content of solid impurities in the gas for combustion purification is greatly reduced. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the present invention;

[0025] Figure 2 is a cross-sectional structural diagram of the flue gas filtration component of the present invention;

[0026] Figure 3 is a cross-sectional structural diagram of the combustion purification component of the present invention;

[0027] Figure 4 is a cross-sectional structural diagram of the core purification component of the present invention;

[0028] Figure 5 is a cross-sectional structural diagram of the combustion chamber of the present invention;

[0029] Figure 6 is a cross-sectional structural diagram of the heat dissipation component of the present invention.

[0030] In the figure: 1. Flue gas filtration component; 101. Buckle base; 102. Threaded intake pipe; 103. Filter sleeve; 104. Inner delivery pipe; 105. Smoke and dust filter pipe; 106. Permeation partition; 107. Permeation hole; 108. Bubbling pipe; 109. Packing plate; 1010. Outer delivery pipe; 2. Guide pipe; 3. Delivery pump; 4. Combustion purification component; 41. Main housing; 42. Inner connection pipe; 43. Auxiliary pump; 44. Core purification component; 441. Component housing; 442. Isolation sleeve plate; 443. Connecting pipe; 444. Combustion chamber; 4441. Heat insulation housing; 4442. Buckle base; 4443. Flame nozzle; 4444. Gas pipe interface; 4445. Catalyst sleeve; 4446. Sleeve screw; 4447. Folding plate buckle; 4448. Catalyst plate; 445. Outlet gas pipe; 446. Outlet seat; 447. Exhaust pump; 448. Buffer tank; 449. Exhaust head; 4410. Intake groove; 4411. Ventilation base; 45. Pipe clamp sleeve; 46. Circulation pipe; 47. Circulation pump; 48. Heat dissipation component; 481. Heat dissipation base; 482. Base bolt; 483. Heat dissipation housing; 484. Heat dissipation hole; 485. Motor clamp sleeve; 486. Locking nut; 487. Heat dissipation motor; 488. Heat dissipation fan blade; 5. Gas storage tank; 6. Sealing cover. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figure 1 , a VOC gas combustion purification device for shipbuilding, including a flue gas filtration component 1, a guide pipe 2, a delivery pump 3, a combustion purification component 4, a gas storage tank 5 and a sealing cover 6. The guide pipe 2 is installed on the top of the flue gas filtration component 1, a delivery pump 3 is provided on the guide pipe 2, the combustion purification component 4 is installed at the end of the guide pipe 2, the gas storage tank 5 is installed on the top of the combustion purification component 4, and the sealing cover 6 is installed on the top of the gas storage tank 5.

[0033] Please refer to Figure 2, the flue gas filtration assembly 1 includes a snap base 101, a threaded inlet pipe 102, a filter sleeve 103, an inner delivery pipe 104, a soot filter pipe 105, a permeable partition 106, permeation holes 107, a bubbling pipe 108, a packing plate 109, and an outer delivery pipe 1010. The threaded inlet pipe 102 is installed on the lower left side of the snap base 101. The filter sleeve 103 is installed inside the snap base 101. The inner side of the threaded inlet pipe 102 is connected to the inner delivery pipe 104. The soot filter pipe 105 is installed at the end of the inner delivery pipe 104. A permeable partition 106 is provided at the inner center of the soot filter pipe 105. Permeation holes 107 are provided on the permeable partition 106. The bubbling pipe 108 is installed at the inner bottom end of the soot filter pipe 105. The packing plate 109 is installed on the inner upper half wall of the soot filter pipe 105. The outer delivery pipe 1010 is installed at the top of the soot filter pipe 105.

[0034] Please refer to Figure 3 , the combustion purification assembly 4 includes a main housing 41, an inner connecting pipe 42, an auxiliary pump 43, a core purification assembly 44, a pipe clamp sleeve 45, a circulation pipe 46, a circulation pump 47, and a heat dissipation assembly 48. The inner connecting pipe 42 is installed on the upper left side inside the main housing 41. The auxiliary pump 43 is installed on the inner connecting pipe 42. The core purification assembly 44 is installed at the end of the inner connecting pipe 42. The pipe clamp sleeve 45 is installed on the right side of the main housing 41. The circulation pipe 46 is installed inside the pipe clamp sleeve 45. A circulation pump 47 is provided at the center of the circulation pipe 46. The heat dissipation assembly 48 is installed on the lower right side of the main housing 41.

[0035] Please refer to Figure 4 , the core purification assembly 44 includes an assembly housing 441, an isolation sleeve plate 442, a connecting pipe 443, a combustion chamber 444, an outlet gas pipe 445, an outlet seat 446, an air extraction pump 447, a buffer tank 448, an air extraction head 449, an air inlet groove 4410, and a ventilation base 4411. An isolation sleeve plate 442 is provided at the inner center of the assembly housing 441. The combustion chamber 444 is installed inside the isolation sleeve plate 442. A connecting pipe 443 is provided at the top of the combustion chamber 444. An outlet gas pipe 445 is provided on the right side of the combustion chamber 444. The end of the outlet gas pipe 445 is connected to the outlet seat 446. The air extraction pump 447 is installed at the bottom of the combustion chamber 444. A buffer tank 448 is provided below the air extraction pump 447. The air extraction head 449 is installed on the inner wall of the buffer tank 448 at the air extraction pump 447. The right side of the buffer tank 448 is connected to the air inlet groove 4410. A ventilation base 4411 is provided at the bottom of the buffer tank 448.

[0036] Please refer to Figure 5, the combustion chamber 444 includes a heat-insulating outer shell 4441, a buckle base 4442, a flame nozzle 4443, a gas pipe interface 4444, a catalyst sleeve 4445, sleeve screws 4446, a folding plate buckle 4447, and a catalyst plate 4448. A buckle base 4442 is provided at the inner top end of the heat-insulating outer shell 4441, a flame nozzle 4443 is installed on the buckle base 4442, a gas pipe interface 4444 is provided on the right side of the heat-insulating outer shell 4441, a catalyst sleeve 4445 is installed at the bottom of the heat-insulating outer shell 4441, sleeve screws 4446 are respectively installed at the left and right ends of the bottom of the catalyst sleeve 4445, a folding plate buckle 4447 is provided on the inner wall of the catalyst sleeve 4445, and a catalyst plate 4448 is installed on the folding plate buckle 4447.

[0037] Please refer to Figure 6 , the heat dissipation component 48 includes a heat dissipation base 481, base bolts 482, a heat dissipation outer shell 483, heat dissipation holes 484, a motor cartridge 485, positioning nuts 486, a heat dissipation motor 487, and heat dissipation fan blades 488. Base bolts 482 are installed on the side of the heat dissipation base 481, a heat dissipation outer shell 483 is provided on the right side of the heat dissipation base 481, heat dissipation holes 484 are provided at the right end of the heat dissipation outer shell 483, a motor cartridge 485 is installed on the heat dissipation outer shell 483, positioning nuts 486 are installed on the outer side of the motor cartridge 485, a heat dissipation motor 487 is installed inside the motor cartridge 485, and heat dissipation fan blades 488 are installed on the heat dissipation motor 487.

[0038] In order to better show the process of the VOC gas combustion purification device for shipbuilding, this embodiment now proposes an implementation method of the VOC gas combustion purification device for shipbuilding, including the following steps:

[0039] Step 1: Connect the threaded intake pipe 102 on the side of the flue gas filtration component 1 to the shipbuilding equipment, so that the VOC gas in the shipbuilding equipment first enters the filtration sleeve 103;

[0040] Step 2: Bubble air into the filtration solution at the inner bottom end of the soot filtration pipe 105 through the bubble pipe 108 in the filtration sleeve 103, filter the soot in the VOC gas by the filtration solution, and assist in filtering the moisture in the gas by the drying filler in the filler plate 109;

[0041] Step 3: The filtered gas is transported to the combustion purification component 4 through the guide pipe 2 and the transfer pump 3, and is transported to the buffer tank 448 in the core purification component 44 through the inner connecting pipe 42 and the auxiliary pump 43 for temporary storage;

[0042] Step 4: Extract the gas by the air extraction pump 447 and the air extraction head 449, and transport it upward, so that the gas passes through the catalyst sleeve 4445 to contaminate the combustion catalyst in the catalyst plate 4448. Finally, the gas enters the combustion chamber 444 upward and is burned by the flame sprayed by the flame nozzle 4443;

[0043] Step Five: The gas after combustion enters the circulation pipe 46 through the outlet gas pipe 445 and the outlet seat 446, and re-enters the buffer tank 448 from the air inlet groove 4410, and is ready for catalytic combustion again.

[0044] In summary, for the VOC gas combustion purification device and method for shipbuilding of the present invention, a flue gas filtration assembly 1 is added in the device. Bubbles are blown into the filtration solution at the inner bottom end of the soot filtration pipe 105 by the bubbling pipe 108 in the filtration sleeve 103. The soot in the VOC gas is filtered by the filtration solution, and the moisture in the gas is assisted to be filtered by the dry packing in the packing plate 109, so that the content of solid impurities in the gas for combustion purification is reduced to the lowest. The gas after combustion enters the circulation pipe 46 through the outlet gas pipe 445 and the outlet seat 446, and re-enters the buffer tank 448 from the air inlet groove 4410, and is ready for catalytic combustion again. After multiple catalytic combustions, it is ensured that the VOC components in the gas can be effectively reduced to the lowest, thereby completing the combustion purification.

[0045] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A VOC gas combustion purification device for shipbuilding, comprising a flue gas filtration component (1), a guiding pipe (2), a delivery pump (3), a combustion purification component (4), a gas storage tank (5) and a sealing cover (6). It is characterized in that: The guiding pipe (2) is installed at the top of the flue gas filtration component (1), the delivery pump (3) is arranged on the guiding pipe (2), the combustion purification component (4) is installed at the end of the guiding pipe (2), the gas storage tank (5) is installed at the top of the combustion purification component (4), and the sealing cover (6) is installed at the top of the gas storage tank (5). The flue gas filtration component (1) includes a buckle base (101), a threaded inlet pipe (102), a filtering sleeve (103), an inner delivery pipe (104), a soot filtering pipe (105), a permeable partition plate (106), permeation holes (107), a bubbling pipe (108), a packing plate (109) and an outer delivery pipe (1010). The threaded inlet pipe (102) is installed at the lower left side of the buckle base (101), the filtering sleeve (103) is installed inside the buckle base (101), the inner delivery pipe (104) is connected to the inner side of the threaded inlet pipe (102), the soot filtering pipe (105) is installed at the end of the inner delivery pipe (104), the permeable partition plate (106) is arranged at the center inside the soot filtering pipe (105), the permeation holes (107) are provided on the permeable partition plate (106), the bubbling pipe (108) is installed at the bottom end inside the soot filtering pipe (105), the packing plate (109) is installed on the inner wall of the upper half inside the soot filtering pipe (105), and the outer delivery pipe (1010) is installed at the top of the soot filtering pipe (105). The combustion purification component (4) includes a main housing (41), an inner connecting pipe (42), an auxiliary pump (43), a core purification component (44), a pipe clamp sleeve (45), a circulation pipe (46), a circulation pump (47) and a heat dissipation component (48). The inner connecting pipe (42) is installed at the upper left side inside the main housing (41), the auxiliary pump (43) is installed on the inner connecting pipe (42), the core purification component (44) is installed at the end of the inner connecting pipe (42), the pipe clamp sleeve (45) is installed on the right side of the main housing (41), the circulation pipe (46) is installed inside the pipe clamp sleeve (45), the circulation pump (47) is arranged at the center of the circulation pipe (46), and the heat dissipation component (48) is installed at the lower right side of the main housing (41). The core purification component (44) includes a component housing (441), an isolation sleeve plate (442), a connecting pipe (443), a combustion chamber (444), an outlet air pipe (445), an outlet seat (446), an air extraction pump (447), a buffer tank (448), an air extraction head (449), an air inlet groove (4410), and an air ventilation base (4411). An isolation sleeve plate (442) is provided at the center inside the component housing (441). A combustion chamber (444) is installed inside the isolation sleeve plate (442). A connecting pipe (443) is provided at the top of the combustion chamber (444). An outlet air pipe (445) is provided on the right side of the combustion chamber (444). The end of the outlet air pipe (445) is connected to the outlet seat (446). An air extraction pump (447) is installed at the bottom of the combustion chamber (444). A buffer tank (448) is provided below the air extraction pump (447). An air extraction head (449) is installed on the inner wall of the buffer tank (448) at the position of the air extraction pump (447). The right side of the buffer tank (448) is connected to the air inlet groove (4410). An air ventilation base (4411) is provided at the bottom of the buffer tank (448).

2. The VOC gas combustion purification device for shipbuilding according to claim 1, characterized in that: The combustion chamber (444) includes a heat insulation housing (4441), a buckle base (4442), a flame nozzle (4443), a tracheal interface (4444), a catalyst sleeve (4445), a sleeve screw (4446), a folding plate buckle (4447), and a catalyst plate (4448). A buckle base (4442) is provided at the top inside the heat insulation housing (4441). A flame nozzle (4443) is installed on the buckle base (4442). A tracheal interface (4444) is provided on the right side of the heat insulation housing (4441). A catalyst sleeve (4445) is installed at the bottom of the heat insulation housing (4441). Sleeve screws (4446) are respectively installed at the left and right ends of the bottom of the catalyst sleeve (4445). A folding plate buckle (4447) is provided on the inner wall of the catalyst sleeve (4445). A catalyst plate (4448) is installed on the folding plate buckle (4447).

3. The VOC gas combustion purification device for shipbuilding according to claim 1, characterized in that: The heat dissipation component (48) includes a heat dissipation base (481), base bolts (482), a heat dissipation housing (483), heat dissipation holes (484), a motor ferrule (485), positioning nuts (486), a heat dissipation motor (487), and heat dissipation fan blades (488). The base bolts (482) are installed on the side of the heat dissipation base (481). The heat dissipation housing (483) is provided on the right side of the heat dissipation base (481). The heat dissipation holes (484) are provided at the right end of the heat dissipation housing (483). The motor ferrule (485) is installed on the heat dissipation housing (483). The positioning nuts (486) are installed on the outer side of the motor ferrule (485). The heat dissipation motor (487) is installed inside the motor ferrule (485). The heat dissipation fan blades (488) are installed on the heat dissipation motor (487).

4. An implementation method of the VOC gas combustion purification device for shipbuilding according to any one of claims 1-3, characterized in that, it includes the following steps: S1: Connect the threaded intake pipe (102) on the side of the flue gas filtration component (1) to the shipbuilding equipment, so that the VOC gas in the shipbuilding equipment first enters the filtration sleeve (103); S2: Bubbles are sent into the filtration solution at the inner bottom end of the soot filtration pipe (105) by the bubbling pipe (108) in the filtration sleeve (103). The soot in the VOC gas is filtered by the filtration solution, and the dry filler in the filler plate (109) assists in filtering the moisture in the gas; S3: The filtered gas is transported to the combustion purification component (4) through the guiding pipe (2) and the delivery pump (3), and is transported to the buffer tank (448) in the core purification component (44) through the inner connecting pipe (42) and the auxiliary pump (43) for temporary storage; S4: The gas is extracted by the air extraction pump (447) and the air extraction head (449) and transported upward, so that the gas passes through the catalyst sleeve (4445) to contaminate the combustion catalyst in the catalyst plate (4448). The gas finally enters the combustion chamber (444) upward and is burned by the flame sprayed by the flame nozzle (4443); S5: The burned gas enters the circulation pipe (46) through the outlet gas pipe (445) and the outlet seat (446), and re-enters the buffer tank (448) from the intake slot (4410), and is ready for catalytic combustion again.

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