Composite waste gas purification equipment

Abstract

The utility model provides composite type waste gas purification equipment which comprises a spraying mechanism, a first-stage spraying mechanism and a second-stage spraying mechanism, the spraying mechanism comprises a gas inlet, a gas outlet, a first-stage spraying cavity, a first-stage partition plate, a first-stage demisting cavity and a second-stage partition plate, and the first-stage spraying cavity, the first-stage partition plate, the first-stage demisting cavity and the second-stage partition plate are sequentially located between the gas inlet and the gas outlet; the first-stage partition plate and the second-stage partition plate respectively comprise a first-stage ventilation part and a second-stage ventilation part, the air inlet, the first-stage ventilation part and the second-stage ventilation part are sequentially distributed in a staggered manner, and a first-stage spraying device is arranged on the first-stage partition plate; the filtering mechanism comprises a filtering channel with the air inlet end connected with the air outlet, and a demisting net layer and a filtering layer which are sequentially arranged in the filtering channel in a spaced mode in the direction away from the air outlet; the purification mechanism comprises a photolysis photocatalysis module and an ozone catalytic oxidation module which are sequentially connected with the gas outlet end of the filtering mechanism. While composite purification of waste gas is realized, water vapor carried by the waste gas is prevented from polluting a subsequent mechanism to influence the service life and the purification effect, and the overall waste gas purification service life and stability of the purification equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification equipment, specifically a composite waste gas purification equipment. Background Technology

[0002] Industrial production generates a large amount of waste gas, which contains toxic and harmful gases and large particulate matter (≥5μm). This waste gas needs to be purified to meet national standards through appropriate waste gas purification equipment before it can be released into the air. Existing waste gas treatment technologies mainly include adsorption, absorption, biological methods, and combustion.

[0003] Currently, waste gas purification equipment using a single treatment process often suffers from problems such as high energy consumption, inability to adapt to various waste gas conditions, and low treatment efficiency. While waste gas purification equipment employing a composite treatment process first absorbs large particles in the waste gas through a spray system before discharging it into subsequent filtration modules, for large volumes of industrial waste gas, the sprayed waste gas carries a large amount of water vapor, affecting the filtration and purification work of subsequent modules. This leads to a reduced lifespan of the filtration modules, unstable waste gas treatment results, and the spray system is generally designed for downward spraying, while the waste gas flows vertically downwards or horizontally. This results in the sprayed solvent falling too quickly and failing to make sufficient contact with the waste gas, leading to poor decontamination.

[0004] The research objective of this utility model is to design a composite waste gas purification device to address the problems existing in the above-mentioned prior art. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a composite waste gas purification device that can effectively solve the problems existing in the prior art.

[0006] The technical solution of this utility model is:

[0007] A composite waste gas purification device, comprising:

[0008] The spraying mechanism includes an air inlet, an air outlet, a primary spraying chamber, a primary baffle, a primary demisting chamber, and a secondary baffle located sequentially between the air inlet and the air outlet. The primary demisting chamber is filled with a plurality of demisting components. The primary baffle and the secondary baffle respectively include a primary ventilation section and a secondary ventilation section for ventilation. The air inlet, the primary ventilation section, and the secondary ventilation section are arranged alternately in sequence. The primary baffle is provided with a primary spraying device whose spraying direction corresponds to that of the air inlet.

[0009] The filtration mechanism includes a filtration channel with the air inlet connected to the air outlet, a demisting mesh layer and a filter layer sequentially arranged in the filtration channel in a direction away from the air outlet;

[0010] The purification mechanism is connected to the outlet of the filter mechanism and is used to purify the exhaust gas output by the filter mechanism before venting it.

[0011] Furthermore, the spraying mechanism also includes a secondary spraying chamber, a tertiary baffle, a secondary demisting chamber, and a quaternary baffle, which are sequentially arranged on the side of the secondary baffle away from the air inlet. The secondary demisting chamber is filled with a plurality of demisting components. The tertiary baffle includes a tertiary ventilation section that is staggered with the secondary ventilation section and a secondary spraying device whose spraying direction corresponds to the secondary ventilation section. The primary, secondary, and tertiary ventilation sections have the same area and are all arranged in a grid pattern. The quaternary baffle is arranged at the air outlet and includes a grid-shaped quaternary ventilation section with an area larger than that of the tertiary ventilation section. The cross-section of the filter channel is larger than that of the quaternary ventilation section.

[0012] Furthermore, both the primary spray device and the secondary spray device include a plurality of spray pipes distributed at a horizontal distance, and each spray pipe is provided with a plurality of nozzles spaced from top to bottom. The spraying direction of the plurality of nozzles of the primary spray device is directly facing the air inlet, and the spraying direction of the plurality of nozzles of the secondary spray device is directly facing the secondary ventilation section.

[0013] Furthermore, the primary spray chamber, primary baffle, primary demister chamber, secondary baffle, secondary spray chamber, tertiary baffle, secondary demister chamber, and quaternary baffle are arranged sequentially in the transverse direction. The air inlet, primary ventilation section, secondary ventilation section, and tertiary ventilation section are arranged alternately in the transverse direction. The lower half of the primary spray chamber and the secondary spray chamber are filled with several demisters. The primary spray device and the secondary spray device are respectively located on the upper part of the primary baffle and the tertiary baffle.

[0014] Furthermore, the spraying mechanism also includes a water collection chamber located below the primary spraying chamber, primary demisting chamber, secondary spraying chamber, and secondary demisting chamber, connected by several drain outlets, and a primary preparation device and a secondary preparation device with identical structures. The primary preparation device includes a preparation chamber connected to the water collection chamber via a filter device and used for preparing absorbent, a reagent chamber for inputting reagent into the preparation chamber, and a suction device whose output end is connected to the primary spraying device and whose input end is used for suctioning absorbent from the preparation chamber. The output end of the suction device of the secondary preparation device is connected to the secondary spraying device. A water seal cylinder extending to the liquid surface inside the water collection chamber is connected to the bottom side of each drain outlet.

[0015] Furthermore, the spraying mechanism also includes an air intake hood located on the side of the air inlet away from the primary spraying chamber and used to connect to the fan, an air intake baffle spaced inside the air intake hood with its upper end height corresponding to the height of the primary ventilation section, and a drain pipe for draining water. The air inlet is formed above the air intake baffle. The drain pipe includes a drain end connected to the agent chambers of the air intake hood and the air intake baffle, the fourth-stage baffle and the filter mechanism, and the primary spraying device and the secondary spraying device, respectively, and an overflow end connected to the upper side of the agent chambers of the primary dispensing device and the secondary dispensing device, respectively.

[0016] Furthermore, the filter channel is divided into two layers that are distributed vertically and extend horizontally. Each layer of the filter channel includes two layers of metal wire mesh arranged vertically and parallel to the air outlet, and the filter layer includes a pre-filter arranged vertically and parallel to the air outlet.

[0017] Furthermore, the purification mechanism includes a light treatment device and an ozone treatment device connected in sequence to the outlet end of the filter mechanism, and an exhaust port connected to the exhaust end of the ozone treatment device. The light treatment device is used for photolysis and photocatalysis of the waste gas output by the filter mechanism, and the ozone treatment device is used for catalytic oxidation of the ozone and waste gas output by the light treatment device.

[0018] Furthermore, the light processing device includes a primary purification channel that extends laterally and whose air inlet end is connected to the air outlet end of the filter mechanism; two layers of photocatalyst modules that are vertically arranged on the air inlet and air outlet sides of the primary purification channel; two layers of ultraviolet lamp groups that are vertically mounted on the opposite sides of the two layers of photocatalyst modules; and a power supply box that is vertically located on both sides of the two layers of ultraviolet lamp groups and includes several power supply devices.

[0019] Furthermore, the ozone treatment device includes two air outlet channels spaced vertically and forming an air inlet channel between them, and an exhaust hood with the exhaust port in the middle. One end of the air inlet channel is connected to the air outlet end of the light treatment device, and the other end is closed. Several ozone catalyst modules are arranged horizontally and vertically in the two air outlet channels. The far ends of the two air outlet channels are connected to the exhaust hood.

[0020] Therefore, the beneficial effects of this utility model are:

[0021] 1. By adding a primary demister chamber, the water vapor carried by the sprayed exhaust gas is removed, reducing the contamination of subsequent filtration mechanisms and minimizing their service life. The air inlet, primary ventilation section, and secondary ventilation section are staggered, causing the exhaust gas to flow in an S-shape through the primary spray chamber and primary demister chamber as it enters the spraying mechanism. This extends the flow path of the exhaust gas, improving its diffusion efficiency and uniformity within these chambers. It also increases the contact area between the waste gas and the spray liquid and demister components, thereby enhancing the cleaning effect of the spraying mechanism on removing large particles through the primary spray chamber and the cleaning effect of the primary demister chamber on the exhaust gas. The system effectively removes water vapor and demisters the exhaust gas. Furthermore, by aligning the primary spraying device with the air inlet, the exhaust gas collides with the absorbent sprayed by the device as it enters, increasing the contact area between the absorbent and the exhaust gas and further enhancing the cleaning effect of the primary spraying chamber. Additionally, the addition of a filtration mechanism ensures that the exhaust gas output from the spraying mechanism first passes through a demisting mesh layer to further remove water vapor, then passes through a filter layer to remove residual particulate matter before being input into subsequent purification mechanisms. This ensures that water vapor and particulate matter carried by the exhaust gas are retained to prevent contamination of the purification mechanisms and their lifespan, while also preventing water vapor from contaminating the filter layer and affecting its lifespan. In summary, this system achieves comprehensive exhaust gas purification while preventing water vapor carried by the exhaust gas from contaminating subsequent mechanisms and affecting their lifespan and purification effect, thus improving the overall exhaust gas purification lifespan and stability of the purification equipment.

[0022] 2. By adding a secondary spray chamber and a tertiary demisting chamber, the waste gas is subjected to secondary spraying to remove large particles and then the water vapor carried by the waste gas. While achieving secondary spraying to improve the overall decontamination effect of the spraying mechanism, it ensures that the water vapor carried by the waste gas output by the spraying mechanism is sufficiently low. Furthermore, by expanding the area of ​​the fourth-stage ventilation section and the cross-section of the filter channel, the area of ​​waste gas flowing to the subsequent filtration mechanism is increased, the contact area between the subsequent filtration mechanism and the waste gas is increased, and the treatment efficiency of the filtration mechanism for waste gas is improved. This improves the overall waste gas treatment efficiency of the waste gas purification equipment, making it suitable for treating large-scale industrial waste gas.

[0023] 3. When the exhaust gas enters the primary spray chamber through the air inlet, it collides head-on with the absorbent sprayed by several nozzles of the primary spray device. When it enters the secondary spray chamber through the secondary ventilation section, it collides head-on with the absorbent sprayed by several nozzles of the secondary spray device. Thus, the impact force of the absorbent sprayed by the nozzles expands the diffusion efficiency of the exhaust gas in the spray chamber and improves the contact effect and area between the absorbent and the exhaust gas, thereby further improving the spray cleaning effect.

[0024] 4. By adding several demisters in the lower half of the primary and secondary spray chambers, the exhaust gas can undergo a first demister as it flows downwards in an S-shape towards the primary or secondary demister after being thoroughly cleaned by the absorbent sprayed by the nozzles in the upper half of the primary or secondary spray chamber. A second demister is then performed upon entering the secondary demister. This pre-adsorption of water vapor carried by the exhaust gas during the first demister reduces the amount of water vapor carried when the exhaust gas enters the demister, improving the demister's effectiveness and service life during the second demister, and ultimately enhancing the overall demister effect of the spray system.

[0025] 5. By setting up a water collection chamber, a primary preparation device, and a secondary preparation device, the absorbent sprayed into the primary and secondary spray chambers absorbs large particles in the waste gas, forming waste liquid that is discharged into the water collection chamber. The waste liquid in the water collection chamber can be filtered by the filtration device and then returned to the preparation chamber to be remixed into absorbent of a certain concentration before being input into the spraying device to absorb large particles in the waste gas. This achieves the recycling of absorbent, improves utilization rate, and reduces spraying treatment costs. At the same time, by setting up a water seal cylinder, while ensuring the drainage function of the drain outlet, the liquid in the water collection chamber can water seal the lower end of the water seal cylinder, thereby preventing waste gas from entering the water collection chamber and improving the stability of the waste gas flow direction.

[0026] 6. The drainage pipe design allows excess waste liquid to overflow and be discharged promptly, preventing waste liquid from filling the water collection chamber and preparation chamber after continuous operation of the spray chamber and demister. This avoids the waste liquid from overflowing into the spray chamber and demister through several drains, which could affect the lifespan of the demister components. This design ensures the stability of the spray chamber and demister while guaranteeing their continuous operation. Furthermore, the drainage pipe allows waste liquid remaining between the air inlet hood and air inlet baffle, and between the four-stage baffle and the filter mechanism, preventing waste liquid residue from accumulating in the gaps and overflowing elsewhere. It also allows for the removal of liquid from the agent chamber for agent replacement, increasing the utility of the drainage pipe, simplifying pipeline connections, and reducing costs and floor space.

[0027] 7. The metal wire mesh further intercepts water vapor in the exhaust gas, and the pre-filter further traps large particles in the exhaust gas. On this basis, by setting the metal wire mesh and pre-filter vertically, the contact area with the exhaust gas can be increased to improve the filtration efficiency, and the lateral volume of the filtration mechanism can be shortened to reduce the floor space occupied.

[0028] 8. By vertically arranging the photocatalyst modules, ultraviolet lamps, and power supply box, the contact area between the exhaust gas and the photocatalyst modules and ultraviolet lamps can be increased to improve the treatment effect. This also reduces the overall lateral width of the light treatment device, thus reducing its footprint. By vertically arranging several ozone catalyst modules with the inlet channel located between the outlet channels, the exhaust gas from the light treatment device enters the inlet channel laterally, then flows vertically through the outlet channel, sequentially passing through several ozone catalyst modules before reacting. Finally, it enters the exhaust hood and converges at the central exhaust port for discharge. This achieves a dual-station ozone catalytic oxidation reaction, accelerating the reaction efficiency, while simultaneously reducing the lateral width of the ozone treatment device and its footprint. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a composite waste gas purification device.

[0030] Figure 2 A schematic diagram of the spraying mechanism after removing the primary preparation device, the secondary preparation device, and the front housing.

[0031] Figure 3 for Figure 2 A schematic diagram of the front view structure.

[0032] Figure 4 A schematic diagram of the structure of the spraying mechanism after removing the front housings of the primary and secondary mixing devices.

[0033] Figure 5 A schematic diagram of the filter mechanism after removing the front housing.

[0034] Figure 6 A schematic diagram of the optical processing device after removing the front power supply box.

[0035] Figure 7 A schematic diagram of the ozone treatment device after the front housing has been removed.

[0036] Figure 8 for Figure 7 A structural diagram from another perspective. Detailed Implementation

[0037] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings:

[0038] refer to Figure 1-8 A composite waste gas purification device, comprising:

[0039] The spray mechanism 1 includes an air inlet 101, an air outlet, a primary spray chamber 102, a primary baffle 103, a primary demisting chamber 104, and a secondary baffle 105 sequentially located between the air inlet 101 and the air outlet. The primary demisting chamber 104 is filled with a plurality of demisting components 106. The primary baffle 103 and the secondary baffle 105 respectively include a primary ventilation section 1031 and a secondary ventilation section 1051 for ventilation. 051 are arranged in a staggered manner. The primary partition 103 is provided with a primary spraying device 1032 with the spraying direction corresponding to the air inlet 101. Specifically, the demister 106 can be an environmental protection ball with the function of adsorbing water vapor. The spraying device is used to spray absorbent. The appropriate absorbent can be selected according to the specific composition of the waste gas. For example, the absorbent can be an acid or alkali used to absorb hydrogen sulfide and ammonia, a VOC absorbent liquid used to absorb VOCs, or a deodorizing liquid used for deodorization.

[0040] The filtration mechanism 2 includes a filtration channel 21 with the air inlet end connected to the air outlet, a demisting mesh layer 22 and a filter layer 23 sequentially arranged in the filtration channel 21 in a direction away from the air outlet;

[0041] The purification mechanism is connected to the outlet of the filter mechanism 2 and is used to purify the exhaust gas output by the filter mechanism 2 before venting.

[0042] The above-described structure, while removing large particles from the waste gas through the primary spray chamber 102, further removes water vapor carried by the sprayed waste gas by adding a primary demister chamber 104, thereby reducing water vapor contamination of the subsequent filtration mechanism 2 and its service life. The air inlet 101, primary ventilation section 1031, and secondary ventilation section 1051 are staggered, causing the waste gas to flow in an S-shape through the primary spray chamber 102 and primary demister chamber 104 when entering the spray mechanism 1. This extends the flow path of the waste gas, improves the diffusion efficiency and uniformity of the waste gas within the primary spray chamber 102 and primary demister chamber 104, and increases the contact area between the waste gas, the spray liquid, and the demister 106, thus improving the effectiveness of the spray mechanism 1 in removing large particles from the waste gas through the primary spray chamber 102. The system effectively removes particulate matter and demistates the sprayed exhaust gas through the primary demisting chamber 104, removing moisture. Furthermore, the primary spraying device 1032 is positioned directly opposite the air inlet 101, allowing the exhaust gas to collide with the absorbent sprayed by the spraying device as it enters through the inlet 101. This increases the contact area between the absorbent and the exhaust gas, further enhancing the decontamination effect of the primary spraying chamber 102. Additionally, the addition of the filter mechanism 2 ensures that the exhaust gas output from the spraying mechanism 1 first passes through the demisting mesh layer 22 to further remove moisture, and then passes through the filter layer 23 to filter residual particulate matter before being input into subsequent purification mechanisms. This ensures that moisture and particulate matter carried by the exhaust gas are retained to prevent contamination of the purification mechanisms and their lifespan, while also preventing moisture from contaminating the filter layer 23 and affecting its lifespan. In summary, this system achieves comprehensive exhaust gas purification while preventing moisture carried by the exhaust gas from contaminating subsequent mechanisms and affecting their lifespan and purification effect, thus improving the overall exhaust gas purification lifespan and stability of the purification equipment.

[0043] To further improve the spraying and decontamination effect of the spraying mechanism 1, the spraying mechanism 1 also includes a secondary spraying chamber 107, a tertiary partition 108, a secondary demisting chamber 109, and a quaternary partition 110, which are sequentially arranged on the side of the secondary partition 105 away from the air inlet 101. The secondary demisting chamber 109 is filled with a plurality of demisting components 106. The tertiary partition 108 includes a tertiary ventilation section 1081 that is staggered with the secondary ventilation section 1051 and a secondary spraying device 1082 whose spraying direction corresponds to the secondary ventilation section 1051. The primary ventilation section 1031, the secondary ventilation section 1051, and the tertiary ventilation section 1081 have the same area and are all set in a grid pattern. The quaternary partition 110 is separated from the air outlet and includes a grid-shaped quaternary ventilation section 1101 with an area larger than that of the tertiary ventilation section 1081. The cross-section of the filter channel 21 is larger than that of the quaternary ventilation section 1101. By adding a secondary spray chamber 107 and a tertiary demisting chamber, the waste gas is subjected to secondary spraying to remove large particles and water vapor. This achieves secondary spraying to improve the overall cleaning effect of the spraying mechanism 1, while ensuring that the water vapor carried by the exhaust gas output by the spraying mechanism 1 is sufficiently low. Furthermore, by expanding the area of ​​the fourth-stage ventilation section 1101 and the cross-section of the filter channel 21, the area of ​​exhaust gas flowing to the subsequent filter mechanism 2 is increased, the contact area between the subsequent filter mechanism 2 and the exhaust gas is increased, and the treatment efficiency of the filter mechanism 2 for the exhaust gas is improved. This enhances the overall exhaust gas treatment efficiency of the exhaust gas purification equipment, making it suitable for treating large-scale industrial exhaust gas.

[0044] To further improve the spray cleaning effect, both the primary spray device 1032 and the secondary spray device 1082 include several spray pipes distributed laterally. Each spray pipe is provided with several nozzles spaced from top to bottom. The spray direction of the nozzles of the primary spray device 1032 is directly facing the air inlet 101, and the spray direction of the nozzles of the secondary spray device 1082 is directly facing the secondary ventilation section 1051. Specifically, the nozzles can be spiral nozzles, which have a large spray diffusion area and smaller droplets. When the exhaust gas enters the primary spray chamber 102 through the air inlet 101, it collides head-on with the absorbent sprayed by several nozzles of the primary spray device 1032. When it enters the secondary spray chamber 107 through the secondary ventilation section 1051, it collides head-on with the absorbent sprayed by several nozzles of the secondary spray device 1082. The impact force of the absorbent sprayed by the nozzles expands the diffusion efficiency of the exhaust gas in the spray chamber and improves the contact effect and area between the absorbent and the exhaust gas, thereby further improving the spray cleaning effect.

[0045] To further improve the demisting effect of the spray mechanism 1, the primary spray chamber 102, primary baffle 103, primary demisting chamber 104, secondary baffle 105, secondary spray chamber 107, tertiary baffle 108, secondary demisting chamber 109, and quaternary baffle 110 are arranged in a horizontal sequence. The air inlet 101, primary ventilation section 1031, secondary ventilation section 1051, and tertiary ventilation section 1081 are arranged in a horizontal alternating vertical sequence. The lower half of the primary spray chamber 102 and the secondary spray chamber 107 are filled with several demisting components 106. The primary spray device 1032 and the secondary spray device 1082 are respectively located on the upper part of the primary baffle 103 and the tertiary baffle 108. By adding several demisters 106 to the lower half of the primary spray chamber 102 and the secondary spray chamber 107, the exhaust gas can undergo a first demister as it flows downward in an S-shape towards the primary demister chamber 104 or the secondary demister chamber 109 after being thoroughly cleaned by the absorbent sprayed by the nozzles in the upper half of the primary spray chamber 102 or the secondary spray chamber 107. A second demister is then performed upon entering the secondary demister chamber 109. This first demister pre-adsorbs the water vapor carried by the exhaust gas, reducing the amount of water vapor carried when the exhaust gas enters the demister chamber, improving the demister effect and service life of the secondary demister, and further enhancing the overall demister effect of the spray mechanism 1.

[0046] To improve the utilization rate of the absorbent, the spraying mechanism 1 further includes a water collection chamber 112 located below the primary spray chamber 102, the primary demister chamber 104, the secondary spray chamber 107, and the secondary demister chamber 109, connected by several drain outlets 111. It also includes a primary preparation device 113 and a secondary preparation device 114 with identical structures. The primary preparation device 113 includes a preparation chamber 1131 connected to the water collection chamber 112 via a filter and used for preparing the absorbent, a reagent chamber 1132 for inputting the reagent into the preparation chamber 1131, and a dispensing chamber. The outlet of the primary spray device 1032 is connected to the suction device 1133, and the input end is used to draw the absorbent in the preparation chamber 1131. The output end of the suction device 1133 of the secondary preparation device 114 is connected to the secondary spray device 1082. Each drain outlet 111 is connected to a water seal cylinder 1111 extending to the liquid surface in the water collection chamber 112. Specifically, the filter device is used to intercept large particles in the water collection chamber 112 and only allows the absorbent components in the water collection chamber 112 to flow back into the preparation chamber 1131. Thus, through the arrangement of the water collection chamber 112, the primary preparation device 113, and the secondary preparation device 114, the absorbent sprayed from the primary spray chamber 102 and the secondary spray chamber 107 absorbs large particles in the waste gas, forming waste liquid which is discharged into the water collection chamber 112. The waste liquid in the water collection chamber 112 can be filtered by the filtration device and then returned to the preparation chamber 1131 to be remixed into an absorbent of a certain concentration before being input into the spraying device to spray and absorb large particles in the waste gas. This realizes the recycling of the absorbent, improves the utilization rate, and reduces the cost of spraying treatment. At the same time, through the arrangement of the water seal cylinder 1111, while ensuring the drainage function of the drain outlet 111, the liquid in the water collection chamber 112 can water seal the lower end of the water seal cylinder 1111, thereby preventing waste gas from entering the water collection chamber 112 and improving the stability of the waste gas flow direction.

[0047] To ensure the continuity and stability of the spray chamber and the demisting chamber, the spray mechanism 1 further includes an air inlet hood 115 located on the side of the air inlet 101 away from the primary spray chamber 102 and used to connect to the fan; an air inlet baffle 116 spaced inside the air inlet hood 115 with its upper end height corresponding to the height of the primary ventilation section 1031; and a drain pipe 117 for draining water. The air inlet 101 is formed above the air inlet baffle 116. The drain pipe 117 includes a drain end 1171 connected between the air inlet hood 115 and the air inlet baffle 116, between the fourth-stage baffle 110 and the filter mechanism 2, and between the agent chambers 1132 of the primary spray device 1032 and the secondary spray device 1082, and an overflow end 1172 connected above the agent chambers 1131 of the primary dispensing device 113 and the secondary dispensing device 114, respectively. The drain pipe 117 allows excess waste liquid to overflow through the overflow end 1172 and be discharged in a timely manner. This prevents waste liquid generated after continuous operation of the spray chamber and the demisting chamber from filling the water collection chamber 112 and the preparation chamber 1131 and overflowing into the spray chamber and the demisting chamber through several drain outlets 111, which would affect the lifespan of the demisting component 106. This ensures the stability of the spray chamber and the demisting chamber while ensuring their continuous operation. Furthermore, the drain end 1171 allows waste liquid remaining between the air intake hood 115 and the air intake baffle 116, and between the four-stage baffle 110 and the filter mechanism 2, to be discharged, preventing waste liquid residue from accumulating in the gaps and overflowing elsewhere. It can also drain the medicine in the medicine chamber 1132 for medicine replacement, etc. This increases the uses of the drain pipe 117, simplifies pipeline connections, and reduces costs and floor space.

[0048] To improve the processing efficiency of the filtration mechanism 2 and reduce its footprint, the filtration channel 21 is divided into two layers that are vertically distributed and horizontally extended. Each layer of the filtration channel 21 includes two vertically arranged metal wire mesh layers 22 parallel to the air outlet, and a pre-filter layer 23 vertically arranged parallel to the air outlet. This allows the metal wire mesh to further intercept water vapor in the exhaust gas, and the pre-filter to further trap large particles. Furthermore, by vertically arranging the metal wire mesh and pre-filter, their contact area with the exhaust gas is increased, thereby improving filtration efficiency and reducing the lateral volume of the filtration mechanism 2, thus reducing its footprint.

[0049] To improve the purification effect of the purification mechanism, the purification mechanism includes a light treatment device 3 and an ozone treatment device 4 connected in sequence to the outlet end of the filter mechanism 2, and an exhaust port 431 connected to the exhaust end of the ozone treatment device 4. The light treatment device 3 is used for photolysis and photocatalysis of the waste gas output by the filter mechanism 2, and the ozone treatment device 4 is used for catalytic oxidation of the ozone and waste gas output by the light treatment device 3.

[0050] Specifically, the light processing device 3 includes a primary purification channel 31 extending laterally and connected at the air inlet to the air outlet of the filter mechanism 2; two layers of photocatalyst modules 32 vertically positioned on the air inlet and outlet sides of the primary purification channel 31; two layers of ultraviolet lamp groups 33 vertically mounted on the opposing sides of the two layers of photocatalyst modules 32; and a power supply box 34 vertically located on both sides of the two layers of ultraviolet lamp groups 33 and including several power supply devices. The ultraviolet lamp groups 33 are high-intensity dual-band low-pressure amalgam UV lamp groups. These lamps generate a large amount of 253.7nm ultraviolet light while also radiating relatively strong 184.9nm ultraviolet light, thereby generating a large amount of O3. The synergistic effect of O3 and ultraviolet light gives these lamps better decomposition and elimination effects. The photocatalyst module 32 is a nano-scale photocatalyst that can be activated by the ultraviolet light generated by the ultraviolet lamp group 33 to promote oxidation-reduction reactions, consume ozone byproducts generated by the UV lamp, enhance the oxidation and decomposition of malodorous molecules, realize ozone elimination and utilization, and generate excellent photocatalytic activity. Furthermore, by vertically arranging the photocatalyst module 32, ultraviolet lamp group 33, and power supply box 34, the contact area between the exhaust gas and the photocatalyst module 32 and ultraviolet lamp group 33 can be increased to improve the treatment effect. It can also reduce the overall lateral width of the light treatment device 3 and reduce its footprint.

[0051] Specifically, the ozone treatment device 4 includes two outlet channels 42 spaced vertically and forming an inlet channel 41 between them, and an exhaust hood 43 with an exhaust port 431 in the middle. One end of each inlet channel 41 is connected to the outlet of the light treatment device 3, and the other end is closed. Several ozone catalyst modules 44 are horizontally spaced and arranged vertically in parallel within each of the two outlet channels 42. The distal ends of the two outlet channels 42 are connected to the exhaust hood 43. The ozone catalyst module 44 is a drawer-type filled granular manganese-based catalyst, which has the advantages of convenient installation and high ozone oxidation and decomposition efficiency. When ozone and exhaust gas pass through the ozone catalyst module 44 together, highly reactive oxidizing oxygen free radicals and hydroxyl free radicals are generated, achieving the purpose of rapid oxidation and degradation of organic matter and malodorous gases. The purification process consumes zero energy and requires zero reagents. Simultaneously, ozone is decomposed into harmless oxygen by passing through the ozone catalyst module 44. Furthermore, by arranging several ozone catalyst modules 44 vertically and placing the air intake channel 41 between the air outlet channels 42, the exhaust gas output from the light treatment device 3 enters the air intake channel 41 laterally and then passes through the air outlet channel 42 in the vertical direction, reacting with several ozone catalyst modules 44 in sequence before entering the exhaust hood 43 and being collected at the exhaust port 431 in the middle for discharge. This achieves the effect of performing ozone catalytic oxidation reaction in both vertical and horizontal positions to accelerate the reaction efficiency, while also reducing the horizontal width of the ozone treatment device 4 to reduce its floor space.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite waste gas purification device, characterized in that, include: The spraying mechanism (1) includes an air inlet (101), an air outlet, a primary spraying chamber (102) located between the air inlet (101) and the air outlet, a primary baffle (103), a primary demisting chamber (104), and a secondary baffle (105). The primary demisting chamber (104) is filled with a plurality of demisting components (106). The primary baffle (103) and the secondary baffle (105) respectively include a primary ventilation section (1031) and a secondary ventilation section (1051) for ventilation. The air inlet (101), the primary ventilation section (1031), and the secondary ventilation section (1051) are arranged alternately. The primary baffle (103) is provided with a primary spraying device (1032) whose spraying direction corresponds to that of the air inlet (101). The filtration mechanism (2) includes a filtration channel (21) with the air inlet end connected to the air outlet, a demisting mesh layer (22) and a filter layer (23) sequentially arranged in the filtration channel (21) in a direction away from the air outlet; The purification mechanism is connected to the outlet of the filter mechanism (2) and is used to purify the exhaust gas output by the filter mechanism (2) before venting.

2. The composite waste gas purification equipment as described in claim 1, characterized in that, The spraying mechanism (1) further includes a secondary spraying chamber (107), a tertiary baffle (108), a secondary demisting chamber (109), and a quaternary baffle (110) sequentially arranged on the side of the secondary baffle (105) away from the air inlet (101). The secondary demisting chamber (109) is filled with a plurality of demisting components (106). The tertiary baffle (108) includes a tertiary ventilation section (1081) staggered with the secondary ventilation section (1051) and the spraying direction corresponds to the spraying direction. The secondary spray device (1082) of the secondary ventilation section (1051) has the same area for the primary ventilation section (1031), the secondary ventilation section (1051) and the tertiary ventilation section (1081) and is all set in a grid shape. The fourth-stage baffle (110) is separated from the air outlet and includes a grid-shaped fourth-stage ventilation section (1101) with an area larger than that of the tertiary ventilation section (1081). The cross-section of the filter channel (21) is larger than that of the fourth-stage ventilation section (1101).

3. The composite waste gas purification equipment as described in claim 2, characterized in that, Both the primary spray device (1032) and the secondary spray device (1082) include a plurality of spray pipes spaced laterally, and each spray pipe is provided with a plurality of nozzles spaced from top to bottom. The spraying direction of the plurality of nozzles of the primary spray device (1032) is directly facing the air inlet (101), and the spraying direction of the plurality of nozzles of the secondary spray device (1082) is directly facing the secondary ventilation section (1051).

4. The composite waste gas purification equipment as described in claim 2, characterized in that, The primary spray chamber (102), primary baffle (103), primary demisting chamber (104), secondary baffle (105), secondary spray chamber (107), tertiary baffle (108), secondary demisting chamber (109), and quaternary baffle (110) are arranged in a horizontal sequence. The air inlet (101), primary ventilation section (1031), secondary ventilation section (1051), and tertiary ventilation section (1081) are arranged in a horizontal sequence, alternating vertically. The lower half of the primary spray chamber (102) and the secondary spray chamber (107) are filled with several demisting components (106). The primary spray device (1032) and the secondary spray device (1082) are respectively located on the upper part of the primary baffle (103) and the tertiary baffle (108).

5. The composite waste gas purification equipment as described in claim 2, characterized in that, The spraying mechanism (1) further includes a water collection chamber (112) located below the primary spray chamber (102), primary demisting chamber (104), secondary spray chamber (107), and secondary demisting chamber (109) connected by several drain outlets (111), a primary dispensing device (113) and a secondary dispensing device (114) with the same structure, and the primary dispensing device (113) is connected by several drain outlets (111). The primary dispensing device (113) includes a dispensing chamber (1131) connected to the water collection chamber (112) through a filter device and used for dispensing absorbent, and a dispensing chamber for dispensing absorbent. The preparation chamber (1131) has a preparation chamber (1132) for inputting the medicine, and an output end connected to the primary spray device (1032) with an input end for a suction device (1133) for drawing the absorbent in the preparation chamber (1131). The output end of the suction device (1133) of the secondary preparation device (114) is connected to the secondary spray device (1082). Each drain outlet (111) has a water seal cylinder (1111) extending to the liquid surface inside the water collection chamber (112) connected to its bottom side.

6. The composite waste gas purification equipment as described in claim 5, characterized in that, The spraying mechanism (1) further includes an air inlet hood (115) located on the side of the air inlet (101) away from the primary spray chamber (102) and used for connecting to a fan; an air inlet baffle (116) spaced inside the air inlet hood (115) and whose upper end height corresponds to the height of the primary ventilation section (1031); and a drain pipe (117) for draining water. The air inlet (101) is formed above the air inlet baffle (116), and the drain pipe (117) is used for draining water. 7) Includes a drain end (1171) connected between the air intake hood (115) and the air intake baffle (116), between the fourth-stage baffle (110) and the filter mechanism (2), and between the first-stage spray device (1032) and the second-stage spray device (1082), and an overflow end (1172) connected to the upper side of the preparation chamber (1131) of the first-stage preparation device (113) and the second-stage preparation device (114).

7. The composite waste gas purification equipment as described in claim 1, characterized in that, The filter channel (21) is divided into two layers that are distributed vertically and extend horizontally. The demisting mesh layer (22) of each filter channel (21) includes two layers of metal wire mesh arranged vertically and parallel to the air outlet. The filter layer (23) includes a pre-filter arranged vertically and parallel to the air outlet.

8. The composite waste gas purification equipment as described in claim 1, characterized in that, The purification mechanism includes a light treatment device (3) and an ozone treatment device (4) connected in sequence to the outlet of the filter mechanism (2), and an exhaust port (431) connected to the exhaust end of the ozone treatment device (4). The light treatment device (3) is used for photolysis and photocatalysis of the waste gas output by the filter mechanism (2), and the ozone treatment device (4) is used for catalytic oxidation of the ozone and waste gas output by the light treatment device (3).

9. The composite waste gas purification equipment as described in claim 8, characterized in that, The light processing device (3) includes a primary purification channel (31) extending laterally and whose air inlet end is connected to the air outlet end of the filter mechanism (2), two layers of photocatalyst modules (32) vertically arranged on the air inlet and air outlet sides of the primary purification channel (31), two layers of ultraviolet lamp groups (33) vertically mounted on the opposite sides of the two layers of photocatalyst modules (32), and a power supply box (34) vertically located on both sides of the two layers of ultraviolet lamp groups (33) and including several power supply devices.

10. The composite waste gas purification equipment as described in claim 9, characterized in that, The ozone treatment device (4) includes two air outlet channels (42) spaced vertically and forming an air inlet channel (41) between them, and an exhaust hood (43) with the exhaust port (431) in the middle. One end of the air inlet channel (41) is connected to the air outlet of the light treatment device (3), and the other end is closed. Several ozone catalyst modules (44) are arranged horizontally in both air outlet channels (42) and arranged in parallel along the vertical direction. The far ends of the two air outlet channels (42) are connected to the exhaust hood (43).

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