Modular coupling device for industrial VOCs waste gas treatment

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a modular coupling device for industrial VOCs waste gas treatment, which comprises a gas inlet assembly, a filter assembly, a fan assembly and an ozone reaction assembly which are arranged in sequence, the air inlet assembly comprises an air inlet pipeline and a check valve, and the check valve is installed on the air inlet pipeline. The fan assembly comprises a ventilation pipeline and a booster fan, and the booster fan is installed on the ventilation pipeline; the ozone reaction assembly comprises an ozone inlet pipe, an air inlet control valve, an ozone reaction box and an air distribution piece; the breather pipe is connected with the ozone reaction box; the ozone inlet pipe is mounted on the ozone reaction box, and the gas inlet control valve is mounted on the ozone inlet pipe; the gas distribution piece comprises a gas distribution plate and a plurality of flow guide plates; the gas distribution plate is mounted in an inner cavity of the ozone reaction box; a plurality of gas distribution grooves are formed in the gas distribution plate; a plurality of guide plates are mounted on the inner side wall of the ozone reaction box; by increasing the movement path of the VOCs waste gas, full decomposition of organic pollutants in the VOCs waste gas is realized, and the treatment effect of the VOCs waste gas is improved.

Description

Technical Field

[0001] The present application relates to the technical field of waste gas treatment, and in particular to a modular coupling device for industrial VOCs waste gas treatment. Background Art

[0002] VOCs refer to organic compounds that have a high saturated vapor pressure (greater than 13.33 Pa) under standard conditions, a low boiling point, a small molecular weight, and are easy to volatilize at room temperature; At present, VOCs in the field of governance technology mainly target organic or inorganic gases, among which the commonly used acid-base separation method, activated carbon adsorption method, biological filter cotton pretreatment, photocatalytic oxidation technology and ozone oxidation technology are used alone or in combination for terminal treatment.

[0003] The VOCs waste gas treatment device in the prior art includes an activated carbon adsorption box, a filter box, an adsorption fan and a chimney. The activated carbon adsorption box is connected to the filter box through an adsorption air inlet pipe, the activated carbon adsorption box is connected to the adsorption fan through an adsorption air outlet pipe, the fan and the chimney are connected through a pipe, and also includes a catalytic combustion furnace and a desorption fan. The activated carbon adsorption box is connected to the catalytic combustion furnace through a desorption air outlet pipe, the activated carbon adsorption box is connected to the desorption fan through a desorption air inlet pipe, the desorption fan and the catalytic combustion furnace are connected through a pipe, a branch pipe is also provided on the desorption air inlet pipe, the branch pipe is connected to the chimney, the adsorption air inlet pipe, the adsorption air outlet pipe, the desorption air inlet pipe and the desorption air outlet pipe are connected to one end of the activated carbon adsorption chamber, and an opening and closing component for opening and closing the pipe is provided on the branch pipe. The side walls of the activated carbon adsorption box, the desorption air inlet pipe, the desorption air outlet pipe and the catalytic combustion furnace are all double-layered, and the double layers are filled with thermal insulation material.

[0004] In the process of treating the above-mentioned VOCs waste gas, the gas containing VOCs is adsorbed by the filter box and the activated carbon adsorption box, and then the desorbed VOCs-containing gas is heated and catalytically burned by the catalytic combustion furnace. However, the by-products after the combustion of the VOCs gas cannot be fully decomposed, which affects the treatment effect of the VOCs waste gas. Utility Model Content

[0005] In order to improve the treatment effect of VOCs waste gas, the present application provides a modular coupling device for industrial VOCs waste gas treatment.

[0006] The present application provides a modular coupling device for industrial VOCs waste gas treatment, which adopts the following technical solution:

[0007] A modular coupling device for industrial VOCs waste gas treatment, comprising an air intake component, a filter component, a fan component and an ozone reaction component arranged in sequence;

[0008] The air intake assembly comprises an air intake pipe and a check valve, the air intake pipe is connected to the air intake end of the filter assembly, and the check valve is installed on the air intake pipe;

[0009] The fan assembly includes a ventilation duct and a pressurized fan, the air outlet end of the filter assembly is connected to the ventilation duct, and the pressurized fan is installed on the ventilation duct;

[0010] The ozone reaction assembly includes an ozone air inlet pipe, an air inlet control valve, an ozone reaction box and an air distribution part;

[0011] The end of the ventilation pipe away from the filter assembly is connected to the ozone reaction box;

[0012] The ozone inlet pipe is installed on the ozone reaction box, and the air intake control valve is installed on the ozone inlet pipe;

[0013] The air distribution member includes an air distribution plate and a plurality of guide plates;

[0014] The air distribution plate is installed in the inner cavity of the ozone reaction box, and the air distribution plate and the ozone reaction box are coaxially arranged, and a flow gap is left between the air distribution plate and the inner side wall of the ozone reaction box;

[0015] The air distribution plate is hollow, and one end of the ozone inlet pipe extends into the inner cavity of the ozone reaction box and is connected to the air distribution plate. The ozone inlet pipe is in communication with the inner cavity of the air distribution plate. A plurality of air distribution grooves are provided on the air distribution plate, and the plurality of air distribution grooves are distributed in an arc shape.

[0016] A plurality of guide plates are installed on the inner wall of the ozone reaction box, and the guide plates are evenly distributed along the circumferential direction of the ozone reaction box. The guide plates form a flow cavity, and the flow cavity is concentrically arranged with the ozone reaction box. The guide plates are staggered with the air distribution plates, and the guide plates are located on the side of the air distribution plate away from the pressurized fan.

[0017] By adopting the above technical scheme, when treating VOCs waste gas, the VOCs waste gas is passed into the filter component along the air intake pipe, the filter component intercepts and filters the suspended matter mixed in the VOCs waste gas, and the filtered VOCs gas flows into the ventilation pipe, and the pressure fan is adjusted to accelerate the flow speed of the VOCs gas in the ventilation pipe. The accelerated VOCs gas flows along the ventilation pipe into the inner cavity of the ozone reaction box. During the movement of the VOCs gas along the inner cavity of the ozone reaction box, the air distribution plate evenly diverts the VOCs gas. At the same time, the air intake control valve is adjusted to inject ozone into the inner cavity of the ozone reaction box along the ozone intake pipe, and the ozone flows into the inner cavity of the air distribution plate along the ozone intake pipe and flows along the distribution plate. The gas groove is discharged, so that the VOCs gas fully reacts with ozone, and the organic pollutants in the VOCs gas are decomposed through the strong oxidizing ability of ozone. The VOCs gas after ozone oxidation moves along the flow gap, and the VOCs gas after ozone oxidation continues to move. The guide plate guides the VOCs gas after ozone oxidation, so that the VOCs gas after ozone oxidation is turbulent and flows out along the flow cavity; the modular coupling device designed for industrial VOCs waste gas treatment increases the movement path of VOCs waste gas through the ozone reaction component, thereby extending the reaction time of VOCs waste gas, achieving full decomposition of organic pollutants in VOCs waste gas, and improving the treatment effect of VOCs waste gas.

[0018] Optionally, a plurality of the air distributing members are provided, and the plurality of the air distributing members are distributed axially along the ventilation duct.

[0019] By adopting the above technical solution, multiple gas distribution components are designed to facilitate the full decomposition of organic pollutants in VOCs waste gas step by step, reduce the content of organic pollutants in VOCs gas, and improve the treatment effect of VOCs waste gas.

[0020] Optionally, the ozone inlet pipes connected to the plurality of air distribution members are commonly connected to an ozone inlet main pipe.

[0021] By adopting the above technical solution, the designed ozone intake main pipe is convenient for the centralized input of ozone and transporting it to the ozone intake pipe one by one.

[0022] Optionally, the filter assembly includes a filter box, a push-pull drawer box, a support frame, a locking member, and a plurality of filter bags;

[0023] The air inlet of the filter box is connected to the air inlet pipeline, and the air outlet of the filter box is connected to the ventilation pipeline;

[0024] The push-pull drawer box is installed on the filter box, and the push-pull drawer box is slidably connected to the filter box;

[0025] The support frame is installed in the inner cavity of the push-pull drawer box, and the support frame is arranged close to the bottom wall of the push-pull drawer box;

[0026] A plurality of filter bags are detachably mounted on the support frame, and the filter bags are located in the inner cavity of the push-pull drawer box, the air inlet duct is connected to the inner cavity of the filter bag, and the opening of the filter bag faces one side of the air inlet duct;

[0027] The locking member is installed on the filter box, and the locking member is used to fix the position of the push-pull drawer box.

[0028] By adopting the above technical solution, when treating VOCs waste gas, the VOCs waste gas is passed into the filter box along the air inlet pipe, and the VOCs waste gas continues to move into the inner cavity of the filter bag. The filter bag intercepts and filters the suspended matter mixed in the VOCs waste gas, thereby achieving preliminary filtration of the VOCs waste gas; when the filter bag needs to be cleaned or replaced after long-term use, the locking piece is adjusted so that the push-pull drawer box can slide along the filter box, and the staff applies force to the push-pull drawer box so that the inner cavity of the push-pull drawer box is connected to the outside world, and then the staff removes the filter bag. , and clean or disassemble the filter bag, and then reinstall the cleaned filter bag or new filter bag on the support frame. The staff then applies force to the push-pull drawer box to reset the push-pull drawer box, and limits the push-pull drawer box through the locking piece to achieve cleaning or replacement of the filter bag; the designed filter component is convenient for intercepting and filtering suspended matter mixed in the VOCs exhaust gas. At the same time, it is convenient to clean or replace the filter bag, thereby ensuring the treatment effect of the VOCs exhaust gas and extending the service life of the modular coupling device for industrial VOCs exhaust gas treatment.

[0029] Optionally, the locking member includes a plurality of rotating buckles, which are evenly distributed along the periphery of the box cover of the sliding drawer box, the rotating buckles are rotatably connected to the filter box, and the rotating buckles are tightly pressed against the outer side wall of the box cover of the sliding drawer box.

[0030] By adopting the above technical solution, when the filter bag needs to be cleaned or replaced after long-term use, the rotating buckle is rotated to separate the rotating buckle from the sliding drawer box, and then force is applied to the sliding drawer box to connect the inner cavity of the sliding drawer box with the outside world. The staff removes the filter bag, cleans or disassembles the filter bag, and then reinstalls the cleaned filter bag or a new filter bag on the support frame, applies force to the sliding drawer box to reset the sliding drawer box, and rotates the rotating buckle again to make the rotating buckle press against the outer wall of the sliding drawer box cover; the designed locking piece facilitates the locking and opening of the sliding drawer box through the rotatable rotating buckle.

[0031] Optionally, a sealing member is provided between the box cover of the sliding drawer box and the filter box, and the sealing member is installed on the box cover of the sliding drawer box.

[0032] By adopting the above technical solution, the designed seal can improve the sealing performance between the push-pull drawer box and the filter box.

[0033] Optionally, it further includes a photocatalytic oxidation component located between the fan component and the ozone reaction component, the photocatalytic oxidation component including a photocatalytic oxidation box, two side back panels, a plurality of catalytic plates and a plurality of ultraviolet light emitting panels;

[0034] The photocatalytic oxidation box is installed on the ventilation duct, and the photocatalytic oxidation box is located between the pressurized fan and the ozone reaction box, and the filter box, the pressurized fan and the photocatalytic oxidation box are connected through the ventilation duct;

[0035] The two side back plates are arranged in parallel, and the side back plates are installed on two opposite side walls of the photocatalytic oxidation box;

[0036] The plurality of catalytic plates and the plurality of ultraviolet light emitting plates are all installed on the two side back plates, and the catalytic plates and the ultraviolet light emitting plates are spaced apart.

[0037] By adopting the above technical scheme, when VOCs waste gas is treated, the VOCs waste gas is passed into the filter box along the air inlet pipe, and the VOCs waste gas continues to move into the inner cavity of the filter bag. The filter bag intercepts and filters the suspended matter mixed in the VOCs waste gas to achieve preliminary filtration of the VOCs waste gas; the filtered VOCs gas flows into the ventilation pipe, and the pressure fan is adjusted. The pressure fan accelerates the flow speed of the VOCs gas in the ventilation pipe. The accelerated VOCs gas enters the inner cavity of the photocatalytic oxidation box along the ventilation pipe. The VOCs gas passes through the catalytic plate. The catalyst is irradiated by the ultraviolet light emitting plate, and the electrons jump from the valence band to the conduction band. After the photogenerated electrons are formed in the conduction band, the electrons overflow and form photogenerated holes in the valence band. The photogenerated electron holes have extremely strong oxidizing properties, and free radicals are generated while degrading VOCs gas. The free radicals continue to degrade VOCs, and the products are CO2 and H2O, realizing the decomposition of VOCs gas; the degraded VOCs gas flows into the inner cavity of the ozone reaction box along the ventilation pipe. During the movement of VOCs gas along the inner cavity of the ozone reaction box, the air distribution plate Perform uniform flow diversion. At the same time, adjust the air intake control valve to inject ozone into the inner cavity of the ozone reaction box along the ozone intake pipe. The ozone flows into the inner cavity of the air distribution plate along the ozone intake pipe and is discharged along the air distribution groove. The VOCs gas fully reacts with the ozone. The organic pollutants in the VOCs gas are decomposed through the strong oxidizing ability of ozone. The VOCs gas after ozone oxidation moves along the flow gap. The VOCs gas after ozone oxidation continues to move. The guide plate guides the VOCs gas after ozone oxidation, causing the VOCs gas after ozone oxidation to have turbulence. And it flows out along the flow cavity, and then is re-oxidized through the gas distribution parts, thereby realizing multiple oxidations of organic pollutants in the VOCs gas; the designed photocatalytic oxidation component, through the extremely strong oxidizing property of photogenerated electron holes, produces free radicals while degrading VOCs gas, and the free radicals continue to degrade VOCs, so that the VOCs waste gas is oxidized twice under the action of photocatalysis, and the products generated are CO2 and H2O, thereby realizing the decomposition of VOCs gas. At the same time, it increases the chemical reaction rate of VOCs gas and improves the treatment effect of VOCs waste gas.

[0038] Optionally, an outlet gas collecting hood is installed at the gas outlet end of the photocatalytic oxidation box.

[0039] By adopting the above technical solution, the designed outlet gas collecting hood is convenient to reduce the discharge area of ​​VOCs gas, increase the contact area between VOCs gas and the gas distribution plate, and thus improve the reaction effect of VOCs gas and ozone.

[0040] In summary, the present application includes at least one of the following beneficial technical effects:

[0041] 1. The modular coupling device designed for industrial VOCs waste gas treatment generates free radicals while degrading VOCs gas through the strong oxidizing property of the photogenerated electron holes in the photocatalytic oxidation component. The free radicals continue to degrade VOCs, so that the VOCs waste gas undergoes two oxidations under the photocatalytic action, and the generated products are CO2 and H2O, thereby achieving the decomposition of VOCs gas and increasing the chemical reaction rate of VOCs gas. The ozone reaction component increases the movement path of VOCs waste gas, thereby extending the reaction time of VOCs waste gas and increasing the contact area between VOCs gas and the gas distribution plate, thereby achieving the full decomposition of organic pollutants in VOCs waste gas and improving the treatment effect of VOCs waste gas.

[0042] 2. The modular coupling device designed for industrial VOCs waste gas treatment can intercept and filter the suspended matter mixed in the VOCs waste gas through the filtering components. At the same time, it is convenient to clean or replace the filter bags, so as to ensure the treatment effect of the VOCs waste gas and extend the service life of the modular coupling device for industrial VOCs waste gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the overall structure of a modular coupling device for industrial VOCs waste gas treatment in Example 1 of the present application;

[0044] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0045] Figure 3 It is a partial structural schematic diagram of a modular coupling device for industrial VOCs waste gas treatment in Example 1 of the present application, which is intended to illustrate the filter bag and the support frame;

[0046] Figure 4 It is a partial structural schematic diagram of a modular coupling device for industrial VOCs waste gas treatment in Example 1 of the present application, which is intended to illustrate a photocatalytic oxidation component;

[0047] Figure 5 yes Figure 1 An enlarged schematic diagram of part B;

[0048] Figure 6 It is a partial structural schematic diagram of a modular coupling device for industrial VOCs waste gas treatment in Example 1 of the present application, which is intended to illustrate the gas distribution slot;

[0049] Figure 7 It is a partial structural schematic diagram of a modular coupling device for industrial VOCs waste gas treatment in Example 1 of the present application, which is intended to illustrate the guide plate.

[0050] Explanation of the reference numerals: 1. air intake assembly; 11. air intake duct; 12. check valve; 2. filter assembly; 21. filter box; 22. push-pull drawer box; 23. support frame; 24. filter bag; 25. locking piece; 251. rotating buckle; 26. handle; 27. sealing piece; 3. fan assembly; 31. ventilation duct; 32. pressurized fan; 4. photocatalytic oxidation assembly; 41. photocatalytic oxidation box; 42. side back panel; 43. catalytic plate; 44. ultraviolet light emitting board; 45. outlet gas collecting cover; 5. ozone reaction assembly; 51. ozone reaction box; 52. air distribution piece; 521. air distribution plate; 522. guide plate; 523. air distribution groove; 524. flow gap; 525. flow cavity; 53. ozone air intake pipe; 54. air intake control valve; 55. ozone air intake main pipe. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1-7 This application is described in further detail.

[0052] The embodiment of the present application discloses a modular coupling device for industrial VOCs waste gas treatment.

[0053] In the prior art, in order to meet environmental protection requirements, factory workshops need to be equipped with VOCs collection hoods and branch pipes. The branch pipes are connected to the main pipes and then connected to the VOCs waste gas treatment system. However, the VOCs generated in the scattered areas of the individual hoods are complex in composition and high in concentration, resulting in a high concentration of VOCs waste gas in the air of local areas. For example, the glue brushing section of the shoemaking industry, the spot welding section of the electronics industry, the painting section of the machinery manufacturing industry, the spraying section of the colored handicraft manufacturing industry, and the coloring section of the handicraft production industry all have such problems. This work area has a greater impact on the environment of the workers, and the excessively high VOCs content has a greater impact on the treatment efficiency of the VOCs waste gas treatment system.

[0054] In order to address the above problems, a modular coupling device for industrial VOCs waste gas treatment of the present application is added at the exhaust end of the section where the VOCs waste gas concentration is too high. The modular coupling device for industrial VOCs waste gas treatment adopts a pipeline structure, so that it can be installed at the exhaust end of the section where the VOCs waste gas concentration is too high through a flange, thereby facilitating rapid and effective pretreatment after collection by a single gas collection hood, or treating some small-volume VOCs areas and small and micro studios that intermittently produce low-concentration VOCs, reducing the burden on subsequent VOCs waste gas treatment systems, improving the working environment of staff, and reducing the need to add other treatment equipment during the treatment of terminal areas where the VOCs waste gas concentration in the local area air is relatively high, so as to reduce the investment cost of other treatment equipment.

[0055] Reference Figure 1A modular coupling device for industrial VOCs waste gas treatment includes an air intake component 1, a filter component 2, a fan component 3, a photocatalytic oxidation component 4 and an ozone reaction component 5, and the air intake component 1, the filter component 2, the fan component 3, the photocatalytic oxidation component 4 and the ozone reaction component 5 are connected in sequence; in the process of industrial VOCs waste gas treatment, the VOCs waste gas is transported to the filter component 2 through the air intake component 1, and the suspended matter mixed in the VOCs waste gas is intercepted and filtered to achieve preliminary filtration of the VOCs waste gas; then the flow rate of the VOCs gas is increased by the fan component 3, so that the VOCs gas is transported to the photocatalytic oxidation component 4, and the photogenerated electron holes have extremely strong oxidizing properties, and free radicals are generated while degrading the VOCs gas. The free radicals continue to degrade VOCs, and the generated products are CO2 and H2O, thereby achieving the decomposition of the VOCs gas; then the degraded VOCs gas is transported to the ozone reaction component 5, and the organic pollutants in the VOCs gas are decomposed by the strong oxidizing ability of ozone to achieve the purification treatment of the VOCs waste gas.

[0056] Reference Figure 1 The air intake component 1 includes an air intake pipe 11 and a check valve 12. The air intake pipe 11 is connected to the air intake end of the filter component 2, and the check valve 12 is installed on the air intake pipe 11; in addition, the air intake component 1 of the present application can be set as one group, two groups, or three groups, as long as the transportation of VOCs waste gas is achieved. In this embodiment, if one group of air intake components 1 is used, only the air intake pipe 11 needs to be installed, and the installation of the check valve 12 can be cancelled, so as to reduce the production cost of the modular coupling device for industrial VOCs waste gas treatment; if two or more groups of air intake components 1 are used, a check valve 12 needs to be installed in each air intake pipe 11 in the air intake component 1 to prevent the backflow of VOCs waste gas when the intake pressure is insufficient.

[0057] Reference Figure 1 and Figure 2 The filter assembly 2 includes a filter box 21, a push-pull drawer box 22, a support frame 23, a locking member 25 and a plurality of filter bags 24; the air inlet of the filter box 21 is connected to the air inlet pipe 11, and the air outlet of the filter box 21 is connected to the ventilation pipe 31, and in this embodiment, the filter box 21 and the air inlet pipe 11, as well as the filter box 21 and the ventilation pipe 31 are connected by flanges; the push-pull drawer box 22 is installed on the filter box 21, and the push-pull drawer box 22 is slidably connected to the filter box 21. In this embodiment, one side of the bottom wall of the push-pull drawer box 22 is arranged close to the air inlet end of the filter box 21, and one side of the opening of the push-pull drawer box 22 is arranged toward the air outlet end of the filter box 21, and a handle 26 is installed on the push-pull drawer box 22; the support frame 23 is installed in the inner cavity of the push-pull drawer box 22, and the support frame 23 is arranged close to the bottom wall of the push-pull drawer box 22. In this embodiment, the support frame 23 is fixedly connected to the push-pull drawer box 22; refer to Figure 3 , multiple filter bags 24 are detachably mounted on the support frame 23. The filter bags 24 in the present application can be two, four, or six, as long as the preliminary filtration of VOCs exhaust gas is achieved. In the present embodiment, two filter bags 24 are provided, and the two filter bags 24 are mounted side by side on the support frame 23, and the filter bags 24 are located in the inner cavity of the push-pull drawer box 22. In addition, the filter bags 24 are diamond-shaped cotton filter bags, and the filter bags 24 can filter particles larger than 10 μm, and the inner mesh collar of the filter bag 24 is connected with the support frame 23 to avoid gaps between the filter bag 24 and the support frame 23; and the push-pull drawer box 22 2 is provided with a flow hole, which is arranged opposite to the bag opening of the filter bag 24, and the opening of the filter bag 24 faces the side of the air inlet pipe 11, so that the air inlet pipe 11 is connected with the inner cavity of the filter bag 24, and at the same time, it is ensured that the VOCs gas flowing into the filter box 21 along the air inlet pipe 11 can only pass through the flow hole; a sealing member 27 is arranged between the box cover of the push-pull drawer box 22 and the filter box 21. In this embodiment, the sealing member 27 is configured as a sealing strip, and the sealing strip is adhered to the box cover of the push-pull drawer box 22, so as to ensure the sealed connection between the push-pull drawer box 22 and the filter box 21 when the push-pull drawer box 22 is in a locked state.

[0058] Reference Figure 1 and Figure 2 The locking piece 25 is installed on the filter box 21, and the locking piece 25 is used to fix the position of the push-pull drawer box 22. The locking piece 25 includes a plurality of rotating buckles 251. In the present application, the rotating buckles 251 can be two, four, or six, as long as the position of the push-pull drawer box 22 and the filter box 21 can be fixed. In the present embodiment, four rotating buckles 251 are provided, and the four rotating buckles 251 are provided near the corner positions of the cover of the push-pull drawer box 22. The four rotating buckles 251 are evenly distributed along the peripheral side of the cover of the push-pull drawer box 22, and each rotating buckle 251 is rotatably connected to the filter box 21. When the push-pull drawer box 22 and the filter box 21 are in a locked state, the rotating buckle 251 is pressed against the outer side wall of the cover of the push-pull drawer box 22.

[0059] Reference Figure 1 The fan assembly 3 includes a ventilation duct 31 and a pressurizing fan 32. The air outlet end of the filter box 21 is connected to the ventilation duct 31, and the pressurizing fan 32 is installed on the ventilation duct 31. The pressurizing fan 32 in this embodiment is configured as a circular duct silent fan to facilitate the stable connection between the circular duct silent fan and the ventilation duct 31 to increase the collected gas flow rate. The high-speed airflow also has a cooling effect on subsequent devices and improves the collection efficiency. In addition, the selected circular duct silent fan has an air volume parameter of 100-800m³ / h and an air pressure parameter of 300-1000pa.

[0060] Reference Figure 1 and Figure 4 The photocatalytic oxidation assembly 4 includes a photocatalytic oxidation box 41, two side back panels 42, a plurality of catalytic plates 43 and a plurality of ultraviolet light emitting panels 44; the photocatalytic oxidation box 41 is installed on the ventilation duct 31. In this embodiment, the photocatalytic oxidation box 41 is a closed box, and the side panels around the photocatalytic oxidation box 41 are all heat dissipation plates. The photocatalytic oxidation box 41 is connected to the ventilation duct 31 through a flange, and the photocatalytic oxidation box 41 is located between the pressurized fan 32 and the ozone reaction box 51, and the filter The box 21, the pressurized fan 32 and the photocatalytic oxidation box 41 are connected through the ventilation duct 31; the two side back plates 42 are arranged in parallel, and the side back plates 42 are installed on the opposite side walls of the photocatalytic oxidation box 41. In this embodiment, the two side back plates 42 are distributed along the axial direction of the ventilation duct 31, and the side back plates 42 are fixedly connected to the inner side walls of the photocatalytic oxidation box 41; a plurality of catalytic plates 43 are installed on the two side back plates 42. In this embodiment, the catalytic plates 43 are double-sided mesh-structured titanium dioxide catalysts. TiO2 has the characteristics of strong light response, low cost, high natural abundance, high chemical stability and high thermal stability, so as to remove volatile organic compounds such as toluene, formaldehyde, benzene, acetaldehyde, ethanol and acetone, and TiO2 is excited by the ultraviolet light emitting plate 44 to generate photogenerated carriers, generating H2O2 to capture photoinduced electrons, so as to reduce the recombination rate of holes and electrons, and the photogenerated electron holes have extremely strong oxidizing properties, and free radicals are generated while degrading VOCs gas, and the free radicals continue to degrade VOCs, and the final products are CO2 and H2O; multiple ultraviolet light emitting plates 44 are installed on the side back plate 42, and the ultraviolet light emitting plates 44 are connected to the side back plate 42 through the ultraviolet light fixing plate, and the multiple ultraviolet light emitting plates 44 are spaced apart from the multiple catalytic plates 43. In this embodiment, the ultraviolet light emitting plates 44 are double-sided light emitting plates, and every two ultraviolet light emitting plates 44 are fixed on the ultraviolet light fixing plate with their backs to each other, and the ultraviolet light emitting plates 44 use small LEDs The UVA light emitting panel is used as the light source, the wavelength parameter of the ultraviolet light emitting panel 44 is less than 370nm, and the light source is kept at 2-2.7cm from the catalytic plate 43 to facilitate the effective excitation of the ultraviolet light emitting panel 44; the outlet end of the photocatalytic oxidation box 41 is installed with an outlet gas collecting cover 45 to reduce the discharge area of ​​VOCs gas.

[0061] Reference Figure 1 and Figure 5The ozone reaction component 5 includes an ozone air inlet pipe 53, an air inlet control valve 54, an ozone reaction box 51 and an air distribution piece 52; the ventilation pipe 31 is connected to the ozone reaction box 51 at one end away from the filter component 2; the ozone air inlet pipe 53 is installed on the ozone reaction box 51, and the air inlet control valve 54 is installed on the ozone air inlet pipe 53. In this embodiment, the air inlet control valve 54 is configured as an air volume control valve to facilitate the regulation of the air intake of ozone; there are multiple air distribution pieces 52, and the multiple air distribution pieces 52 are distributed axially along the ventilation pipe 31. In the present application, the air distribution pieces 52 can be two, three, or four, as long as the sufficient reaction of ozone and VOCs gas is achieved. In this embodiment, the number of air distribution pieces 52 and the ozone air inlet pipe 53 is the same, and the air distribution pieces 52 and the ozone air inlet pipe 53 are both configured as two, two The ozone inlet pipe 53 is commonly connected to the ozone inlet main pipe 55, and the two air distribution parts 52 are axially distributed along the ventilation pipe 31 to facilitate the decomposition of organic pollutants in the VOCs exhaust gas step by step; in addition, a mobile or fixed ozone generator is added in the present application, and the ozone generator is connected to the ozone inlet main pipe 55 to facilitate the supply of ozone; the air distribution part 52 includes an air distribution plate 521 and a plurality of guide plates 522, the air distribution plate 521 is installed in the inner cavity of the ozone reaction box 51, and the air distribution plate 521 is coaxially arranged with the ozone reaction box 51, and a flow gap 524 is left between the air distribution plate 521 and the inner side wall of the ozone reaction box 51; the air distribution plate 521 is hollow, and the ozone inlet pipe 53 extends into the inner cavity of the ozone reaction box 51 at one end and is connected to the air distribution plate 521, and the ozone inlet pipe 53 is communicated with the inner cavity of the air distribution plate 521, refer to Figure 6 , a plurality of air distribution grooves 523 are provided on the air distribution plate 521, and the plurality of air distribution grooves 523 are distributed in an arc shape, and a plurality of air distribution holes are provided on each air distribution groove 523, and the plurality of air distribution holes are distributed along the arc length direction of the air distribution groove 523; Figure 7 , multiple guide plates 522 are installed on the inner wall of the ozone reaction box 51, and the multiple guide plates 522 are evenly distributed along the circumferential direction of the ozone reaction box 51, and the multiple guide plates 522 form a flow cavity 525, and the flow cavity 525 is concentrically arranged with the ozone reaction box 51. The guide plates 522 and the air distribution plates 521 are staggered, and the guide plates 522 are located on the side of the air distribution plate 521 away from the pressurized fan 32; and, an ozone concentration detector is installed at the exhaust end of the ozone reaction box 51 to facilitate monitoring of the ozone concentration at the end of the ozone reaction box 51.

[0062] The implementation principle of the modular coupling device for industrial VOCs waste gas treatment in the embodiment of the present application is as follows: when treating VOCs waste gas, the VOCs waste gas is passed into the filter box 21 along the air inlet pipe 11, and the VOCs waste gas continues to move into the inner cavity of the filter bag 24, and the filter bag 24 intercepts and filters the suspended matter mixed in the VOCs waste gas to achieve preliminary filtration of the VOCs waste gas; the filtered VOCs gas flows into the ventilation pipe 31, and the pressure fan 32 is adjusted to accelerate the VOCs in the ventilation pipe 31. The flow rate of Cs gas is accelerated, and the accelerated VOCs gas enters the inner cavity of the photocatalytic oxidation box 41 along the ventilation pipe 31. The VOCs gas passes through the catalytic plate 43. Under the irradiation of the ultraviolet light emitting plate 44, the electrons of the catalyst jump from the valence band to the conduction band position, forming photogenerated electrons in the conduction band and photogenerated holes in the valence band. The photogenerated electron holes have extremely strong oxidizing properties, and free radicals are generated while degrading the VOCs gas. The free radicals continue to degrade the VOCs to generate products of CO2 and H2O, achieving V Decomposition of OCs gas; the degraded VOCs gas flows into the inner cavity of the ozone reaction box 51 along the ventilation pipe 31. During the movement of the VOCs gas along the inner cavity of the ozone reaction box 51, the air distribution plate 521 evenly distributes the VOCs gas. At the same time, the air intake control valve 54 is adjusted to inject ozone into the inner cavity of the ozone reaction box 51 along the ozone intake pipe 53. The ozone flows into the inner cavity of the air distribution plate 521 along the ozone intake pipe 53 and is discharged along the air distribution groove 523. The VOCs gas fully reacts with the ozone and is discharged through the ozone. The ozone-oxidized VOCs gas has a strong oxidation ability and decomposes the organic pollutants in the VOCs gas. The ozone-oxidized VOCs gas moves along the flow gap 524. The ozone-oxidized VOCs gas continues to move, and the guide plate 522 guides the ozone-oxidized VOCs gas, so that the ozone-oxidized VOCs gas is turbulent and flows out along the flow cavity 525. Then, it is oxidized again through the gas distribution piece 52, thereby realizing multiple oxidations of organic pollutants in the VOCs gas, and further realizing the treatment of VOCs waste gas.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A modular coupling device for industrial VOCs waste gas treatment, characterized in that: It comprises an air intake component (1), a filter component (2), a fan component (3) and an ozone reaction component (5) which are arranged in sequence; The air intake assembly (1) comprises an air intake pipe (11) and a check valve (12), wherein the air intake pipe (11) is connected to the air intake end of the filter assembly (2), and the check valve (12) is installed on the air intake pipe (11); The filter assembly (2) comprises a filter box (21), a push-pull drawer box (22), a support frame (23), a locking member (25) and a plurality of filter bags (24); The air inlet of the filter box (21) is connected to the air inlet pipeline (11), and the air outlet of the filter box (21) is connected to the ventilation pipeline (31); The push-pull drawer box (22) is installed on the filter box (21), and the push-pull drawer box (22) is slidably connected to the filter box (21); The support frame (23) is installed in the inner cavity of the push-pull drawer box (22), and the support frame (23) is arranged close to the bottom wall of the push-pull drawer box (22); A plurality of filter bags (24) are detachably mounted on the support frame (23), and the filter bags (24) are located in the inner cavity of the push-pull drawer box (22), the air intake duct (11) is in communication with the inner cavity of the filter bags (24), and the opening of the filter bags (24) faces one side of the air intake duct (11); The locking member (25) is installed on the filter box (21), and the locking member (25) is used to fix the position of the push-pull drawer box (22); The fan assembly (3) comprises a ventilation duct (31) and a pressurizing fan (32); the air outlet end of the filter assembly (2) is connected to the ventilation duct (31), and the pressurizing fan (32) is installed on the ventilation duct (31); The ozone reaction component (5) comprises an ozone air inlet pipe (53), an air inlet control valve (54), an ozone reaction box (51) and an air distribution member (52); The end of the ventilation pipe (31) away from the filter assembly (2) is connected to the ozone reaction box (51); The ozone inlet pipe (53) is installed on the ozone reaction box (51), and the air intake control valve (54) is installed on the ozone inlet pipe (53); The air distribution member (52) comprises an air distribution plate (521) and a plurality of guide plates (522); The air distribution plate (521) is installed in the inner cavity of the ozone reaction box (51), and the air distribution plate (521) and the ozone reaction box (51) are coaxially arranged, and a flow gap (524) is left between the air distribution plate (521) and the inner wall of the ozone reaction box (51); The air distribution plate (521) is hollow, and one end of the ozone inlet pipe (53) extends into the inner cavity of the ozone reaction box (51) and is connected to the air distribution plate (521). The ozone inlet pipe (53) is in communication with the inner cavity of the air distribution plate (521). The air distribution plate (521) is provided with a plurality of air distribution grooves (523), and the plurality of air distribution grooves (523) are distributed in an arc shape. A plurality of guide plates (522) are installed on the inner wall of the ozone reaction box (51), and the plurality of guide plates (522) are evenly distributed along the circumferential direction of the ozone reaction box (51), and the plurality of guide plates (522) form a flow cavity (525), and the flow cavity (525) is concentrically arranged with the ozone reaction box (51), and the guide plates (522) and the air distribution plates (521) are staggered, and the guide plates (522) are located on the side of the air distribution plates (521) away from the pressurized fan (32).

2. The modular coupling device for industrial VOCs waste gas treatment according to claim 1, characterized in that: A plurality of the air distributing members (52) are provided, and the plurality of the air distributing members (52) are distributed axially along the ventilation duct (31).

3. The modular coupling device for industrial VOCs waste gas treatment according to claim 2, characterized in that: The ozone inlet pipes (53) connected to the plurality of gas distribution members (52) are commonly connected to an ozone inlet main pipe (55).

4. The modular coupling device for industrial VOCs waste gas treatment according to claim 1, characterized in that: The locking member (25) comprises a plurality of rotating buckles (251), the plurality of rotating buckles (251) being evenly distributed along the periphery of the box cover of the push-pull drawer box (22), the rotating buckles (251) being rotationally connected to the filter box (21), and the rotating buckles (251) being tightly pressed against the outer side wall of the box cover of the push-pull drawer box (22).

5. The modular coupling device for industrial VOCs waste gas treatment according to claim 1, characterized in that: A sealing member (27) is provided between the box cover of the push-pull drawer box (22) and the filter box (21), and the sealing member (27) is installed on the box cover of the push-pull drawer box (22).

6. The modular coupling device for industrial VOCs waste gas treatment according to claim 1, characterized in that: It also includes a photocatalytic oxidation component (4) located between the fan component (3) and the ozone reaction component (5), wherein the photocatalytic oxidation component (4) includes a photocatalytic oxidation box (41), two side back panels (42), a plurality of catalytic plates (43) and a plurality of ultraviolet light emitting panels (44); The photocatalytic oxidation box (41) is installed on the ventilation duct (31), and the photocatalytic oxidation box (41) is located between the pressurized fan (32) and the ozone reaction box (51), and the filter box (21), the pressurized fan (32) and the photocatalytic oxidation box (41) are connected through the ventilation duct (31); The two side back plates (42) are arranged in parallel, and the side back plates (42) are installed on two opposite side walls of the photocatalytic oxidation box (41); The plurality of catalytic plates (43) and the plurality of ultraviolet light emitting plates (44) are both mounted on the two side back plates (42), and the catalytic plates (43) and the ultraviolet light emitting plates (44) are spaced apart.

7. The modular coupling device for industrial VOCs waste gas treatment according to claim 6, characterized in that: An outlet gas collecting hood (45) is installed at the gas outlet end of the photocatalytic oxidation box (41).

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