Waste gas treatment process and device

Abstract

The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment process and device.The waste gas treatment device comprises a waste gas filter cartridge, an acid washing tower, an alkaline washing tower, an ultraviolet decomposition device and an adsorption tower, the ultraviolet decomposition device and the adsorption tower are arranged in parallel, waste gas is filtered through the waste gas filter cartridge, then absorbed through the acid washing tower and the alkaline washing tower and then subjected to ultraviolet photolysis oxidation, and redundant ozone is absorbed; the process is high in treatment efficiency, low in operation cost and free of secondary pollution to the environment, in addition, the waste gas filter cartridge cleans the filter plate through cooperation of the cleaning assembly and the knocking block, the filter plate is prevented from being blocked, the waste gas treatment efficiency is further improved, and the waste gas treatment cost is reduced. A plurality of partition plates are driven to rotate when a support frame in the ultraviolet decomposition device rotates, and the waste gas in the shell is further stirred, so that the waste gas is in full contact with ultraviolet light, and the ultraviolet photolysis efficiency of the waste gas is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and specifically provides a waste gas treatment process and device. Background Art

[0002] With the rapid development of industrialization, the problem of organic waste gas emission has become increasingly serious, becoming one of the main sources of environmental pollution. Organic waste gas mainly comes from industries such as petrochemical, pharmaceutical, painting, printing, and plastic processing. Its composition is complex and usually contains harmful substances such as volatile organic compounds (VOCs), benzene series, aldehydes, and ketones. These substances not only pollute the atmospheric environment but also pose serious hazards to human health, such as causing respiratory diseases, cancer, and teratogenesis. In addition, some VOCs are precursor substances of photochemical smog and ozone layer depletion, having a negative impact on global climate change.

[0003] In recent years, with the increasingly strict environmental protection regulations and the improvement of public environmental awareness, the treatment of organic waste gas has become an important topic in the field of environmental protection. Countries have successively introduced relevant policies and standards to limit the emission of organic waste gas and encourage the research and development of efficient and low-energy-consuming waste gas treatment technologies. Currently, common organic waste gas treatment methods include adsorption method, absorption method, catalytic combustion method, biological method, etc. However, these methods still have some limitations in practical applications, such as low treatment efficiency, high energy consumption, and secondary pollution problems. In view of this, we propose a waste gas treatment process and device. Summary of the Invention

[0004] The purpose of the present invention is to provide a waste gas treatment process and device to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A waste gas treatment device includes a waste gas filter cartridge, an acid washing tower, an alkali washing tower, ultraviolet decomposition devices arranged in parallel, and an adsorption tower. A waste gas inlet is provided at the bottom of the side wall of the waste gas filter cartridge. The top of the waste gas filter cartridge is hermetically connected to the bottom of the acid washing tower through pipeline I. The top of the acid washing tower is hermetically connected to the bottom of the alkali washing tower through pipeline II. The top of the alkali washing tower is hermetically connected to the ultraviolet decomposition devices arranged in parallel through pipeline III. The top of the side wall of the ultraviolet decomposition device is connected to the same adsorption tower through pipeline IV. A gas detector is provided at the outlet of the adsorption tower.

[0007] Preferably, a filter plate is installed inside the exhaust gas filter cartridge. Rotating shafts are symmetrically and rotatably arranged between the filter plate and the inner top wall of the exhaust gas filter cartridge. A first motor is arranged at the top of the exhaust gas filter cartridge, and the output end of the first motor is fixedly connected to one of the rotating shafts. A first sprocket is fixedly sleeved above the rotating shaft, and the same first chain is meshed and sleeved outside the two first sprockets. A fixed column is fixedly sleeved in the middle of the rotating shaft, and a moving groove is formed on the outer side wall of the fixed column. Filtering areas are symmetrically arranged on the filter plate, and a plurality of filtering holes are evenly arranged in the filtering areas. A cleaning assembly is correspondingly arranged above the filtering areas, and the top end of the cleaning assembly slides in the moving groove. A waste gas pipe is arranged in the waste gas inlet, and shunt pipes are arranged side by side at the top end of the waste gas pipe. The end of the shunt pipe is connected to a conical flow equalizing cover, and a plurality of flow equalizing holes are evenly formed in the conical flow equalizing cover. The conical flow equalizing cover is respectively arranged directly below the filtering areas. An exhaust gas outlet is also arranged at the top of the exhaust gas filter cartridge. The exhaust gas outlet is hermetically connected to the bottom of the pickling tower through pipeline I. A conical slag discharge port is arranged at the bottom of the exhaust gas filter cartridge.

[0008] Preferably, the cleaning assembly includes a cleaning groove. A plurality of synchronously rotating cleaning rods are evenly arranged inside the cleaning groove. A plurality of through holes are evenly formed at the bottom of the cleaning groove. The bottom end of the cleaning rod passes through the through hole and extends below the cleaning groove. The cleaning rods are arranged in one-to-one correspondence with the filtering holes. A T-shaped connecting rod is fixedly arranged at the top of the cleaning groove. T-shaped fixing grooves are also symmetrically arranged inside the exhaust gas filter cartridge. The top end of the fixing groove is fixedly connected to the inner top wall of the exhaust gas filter cartridge. The connecting rod slides in the fixing groove. A spring is fixedly arranged between the top end of the connecting rod and the inner top end of the fixing groove. A moving column is arranged on one side of the top of the connecting rod close to the rotating shaft. The moving column slides in the moving groove.

[0009] Preferably, a plurality of cleaning rods are arranged in a rectangular array inside the cleaning groove. The plurality of cleaning rods are correspondingly and rotatably arranged in the through holes through bearings. A second sprocket is fixedly sleeved in the middle of the cleaning rod. The same second chain is meshed outside each row of second sprockets. A third sprocket is fixedly sleeved at the top of the cleaning rod. The same third chain is meshed outside each column of third sprockets. A second motor is arranged at the top of the cleaning groove. The output end of the second motor penetrates through the top wall of the cleaning groove and is fixedly connected to the top of one of the cleaning rods. A brush is also fixedly arranged on the peripheral side of the part of the cleaning rod below the cleaning groove.

[0010] Preferably, the moving groove includes a vertically arranged first moving groove and a second moving groove arranged around the peripheral side of the fixed column. The top end and the bottom end of the second moving groove are respectively communicated with the top end and the bottom end of the first moving groove. The circumferential directions of the second moving grooves on the two fixed columns are opposite.

[0011] Preferably, a first bevel gear is fixedly sleeved at the bottom of the rotating shaft. U-shaped brackets are symmetrically arranged on the filter plate. A rotating rod is rotatably arranged on the U-shaped brackets. A second bevel gear is fixedly sleeved at one end of the rotating rod close to the rotating shaft. The second bevel gear meshes with the first bevel gear. The other end of the rotating rod is fixedly connected with a rotating disk. A positioning post is eccentrically arranged on one side of the rotating disk away from the rotating rod. The positioning posts on the two rotating disks are arranged staggeredly. A fixing frame is arranged on one side of the U-shaped bracket away from the first bevel gear. The fixing frame is fixedly arranged on the filter plate. A U-shaped fixing groove is arranged on one side of the fixing frame close to the U-shaped bracket. Moving holes are symmetrically opened at the upper and lower ends of the U-shaped fixing groove. A moving rod is movably arranged in the moving hole. The same positioning frame is fixedly connected to the opposite sides of the two moving rods. A knocking block is fixedly connected to the bottom of the lower moving rod. The positioning post is movably arranged in the positioning frame.

[0012] Preferably, a plurality of U-shaped grooves are parallelly opened on the U-shaped brackets. A plurality of annular columns are correspondingly and parallelly sleeved on the rotating rod. The annular columns are rotatably arranged in the U-shaped grooves.

[0013] Preferably, the ultraviolet decomposition device includes a housing with a regular polygon cross-section. Support feet are arranged at the bottom of the housing. A rotating plate is hinged to the top of the housing. A gas inlet is arranged at the bottom of the housing. A gas outlet is arranged at the top of the side wall of the housing. A support frame is arranged inside the housing. A third motor is fixedly arranged at the bottom of the housing through a motor bracket. The output end of the third motor is fixedly connected to the center of the bottom of the support frame. The support frame includes a bottom plate and a top plate. A connecting column is fixedly connected between the center of the top of the bottom plate and the center of the bottom of the top plate. A plurality of fixing grooves are uniformly arranged along the circumferential direction at the edge of the top of the bottom plate. A plurality of fixing holes are correspondingly opened along the circumferential direction at the edge of the top plate. Ultraviolet lamp belts are movably arranged in the fixing holes. The bottom ends of the ultraviolet lamp belts pass through the fixing holes and are fixedly arranged in the fixing grooves. The ultraviolet lamp belts are electrically connected to an external power controller. Catalyst layers are arranged on the inner side wall of the housing and the outer side wall of the connecting column.

[0014] Preferably, a plurality of gas flow holes are also uniformly opened on the bottom plate and the top plate. A plurality of partition plates are arranged along the circumferential direction at the bottom of the top plate. The plurality of partition plates are arranged between the fixing holes and the connecting column. The lengths of the plurality of partition plates increase in sequence along the circumferential direction.

[0015] An exhaust gas treatment process includes the following steps:

[0016] Step 1: The exhaust gas collected centrally enters the exhaust gas filter cylinder from the exhaust gas inlet for filtration to remove the particulate matter entrained in the exhaust gas.

[0017] Step 2: The filtered exhaust gas sequentially passes through an acid washing tower and an alkali washing tower to preliminarily remove the alkaline substances and acidic substances in the exhaust gas.

[0018] Step 3: Further decompose the waste gas through the ultraviolet decomposition device arranged in parallel, and the treated gas enters the adsorption tower;

[0019] Step 4: Adsorb and treat the excess ozone generated by ultraviolet photolysis through the adsorption tower, and the outlet gas is discharged after passing the gas detector and meeting the standards.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The waste gas treatment device includes a waste gas filter cartridge, an acid washing tower, an alkali washing tower, an ultraviolet decomposition device arranged in parallel, and an adsorption tower. The waste gas is first filtered through the waste gas filter cartridge and then absorbed through the acid-base washing tower, and then undergoes ultraviolet photolysis oxidation, and the excess ozone is absorbed and treated, achieving the effect of thoroughly degrading the malodorous gas and enabling it to meet the discharge standards. This process has high treatment efficiency and low operating costs, and will not cause secondary pollution to the environment.

[0022] 2. The waste gas filter cartridge of the waste gas treatment device cleans the filter plate through the cooperation of the cleaning component and the knocking block, avoiding blockage of the filter plate and further improving the waste gas treatment efficiency.

[0023] 3. A plurality of partition plates with different lengths are arranged circumferentially inside the ultraviolet decomposition device of the waste gas treatment device. When the support frame rotates, it drives the plurality of partition plates to rotate, further agitating the waste gas in the shell and enabling the waste gas to fully contact with the ultraviolet light, further improving the ultraviolet photolysis efficiency of the waste gas. Description of the Drawings

[0024] Figure 1 It is the overall structure schematic diagram of the present invention;

[0025] Figure 2 It is the internal structure schematic diagram of the waste gas filter cartridge in the present invention;

[0026] Figure 3 It is the structure schematic diagram above the filter plate in the waste gas filter cartridge of the present invention;

[0027] Figure 4 It is the present invention Figure 3 The enlarged structure diagram of part A in;

[0028] Figure 5 It is the internal structure schematic diagram of the cleaning tank in the present invention;

[0029] Figure 6 It is the overall structure schematic diagram of the ultraviolet decomposition device in the present invention;

[0030] Figure 7 It is the internal structure schematic diagram of the ultraviolet decomposition device in the present invention;

[0031] Figure 8This is a schematic structural diagram of the support frame in the present invention.

[0032] In the figure: 1. Exhaust gas filter cartridge; 11. Exhaust gas inlet; 111. Exhaust gas pipe; 112. Shunt pipe; 113. Conical flow equalizing cover; 1131. Flow equalizing holes; 12. Pipeline I; 13. Filter plate; 131. Filter area; 1311. Filter holes; 132. U-shaped bracket; 1321. Rotating rod; 13211. Annular column; 1322. Second bevel gear; 1323. Rotating disk; 1324. Positioning column; 1325. U-shaped groove; 133. Fixed frame; 134. C-shaped fixing groove; 1341. Moving hole; 1342. Moving rod; 1343. Positioning frame; 1344. Knocking block; 14. Rotating shaft; 141. First sprocket; 142. First chain; 143. Fixed column; 1431. Moving groove; 14311. First moving groove; 14312. Second moving groove; 144. First bevel gear; 15. First motor; 16. Cleaning assembly; 161. Cleaning groove; 1611. Cleaning rod; 16111. Second sprocket; 16112. Second chain; 16113. Third sprocket; 16114. Third chain; 16115. Second motor; 16116. Brush; 1612. Through hole; 162. Connecting rod; 1621. Moving column; 163. Spring; 17. Exhaust gas outlet; 18. Fixed groove; 19. Conical slag discharge port; 2. Pickling tower; 21. Pipeline II; 3. Alkali washing tower; 31. Pipeline III; 4. UV decomposition device; 41. Housing; 411. Support feet; 412. Rotating plate; 413. Gas inlet; 414. Gas outlet; 42. Support frame; 421. Bottom plate; 4211. Fixed groove; 422. Top plate; 4221. Fixed hole; 4222. Partition plate; 423. Connecting column; 424. UV lamp strip; 425. Gas circulation holes; 43. Third motor; 44. Pipeline IV; 5. Adsorption tower; 6. Gas detector. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0035] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "several" is two or more unless otherwise specifically defined.

[0037] Please refer to Figures 1 - 8 as shown, the present invention provides a technical solution:

[0038] An exhaust gas treatment device, such as Figure 1As shown in the figure, it includes an exhaust gas filter cartridge 1, an acid washing tower 2, an alkali washing tower 3, ultraviolet decomposition devices 4 arranged in parallel, and an adsorption tower 5. At the bottom of the side wall of the exhaust gas filter cartridge 1, there is an exhaust gas inlet 11. The exhaust gas collected centrally enters the exhaust gas filter cartridge 1 from the exhaust gas inlet 11 for filtration to remove the particulate matter entrained in the exhaust gas. The top of the exhaust gas filter cartridge 1 is hermetically connected to the bottom of the acid washing tower 2 through pipeline I 12. The top of the acid washing tower 2 is hermetically connected to the bottom of the alkali washing tower 3 through pipeline II 21. The top of the alkali washing tower 3 is hermetically connected to the ultraviolet decomposition devices 4 arranged in parallel through pipeline III 31. A one-way control valve is provided on pipeline III 31. The filtered exhaust gas sequentially passes through the acid washing tower 2 and the alkali washing tower 3 to preliminarily remove the alkaline substances and acidic substances in the exhaust gas, mainly ammonia and hydrogen chloride, while reducing the concentration of the exhaust gas and improving the treatment effect of subsequent ultraviolet photolysis. The top of the side wall of the ultraviolet decomposition device 4 is connected to the same adsorption tower 5 through pipeline IV 44. A one-way control valve is provided on pipeline IV 44. A biological adsorbent packing layer is arranged in the adsorption tower 5 to adsorb and treat the excess ozone generated by ultraviolet photolysis. A gas detector 6 is provided at the outlet of the adsorption tower 5. After being measured and meeting the standards by the gas detector 6, it is discharged. By arranging the ultraviolet photolysis devices 4 in parallel, it is convenient to regularly overhaul the inside of the ultraviolet photolysis devices 4 without affecting the normal operation of the device.

[0039] It is worth noting that in this device, the acid washing tower 2 and the alkali washing tower 3 adopt existing technologies, and mist collectors are provided at the tops of the acid washing tower 2 and the alkali washing tower 3 to prevent mist from entering the inside of the ultraviolet photolysis device 4 and damaging the ultraviolet lamp strip 424.

[0040] In this embodiment, as Figure 2 、 3As described above, a filter plate 13 is installed inside the exhaust gas filter cartridge 1. Rotating shafts 14 are symmetrically and rotatably arranged between the filter plate 13 and the inner top wall of the exhaust gas filter cartridge 1. A first motor 15 is arranged at the top of the exhaust gas filter cartridge 1. The output end of the first motor 15 is fixedly connected to one of the rotating shafts 14. A first sprocket 141 is fixedly sleeved above the rotating shaft 14. The same first chain 142 is meshed and sleeved outside the two first sprockets 141. By controlling the rotation of one of the rotating shafts 14 by the first motor 15 and driving the other rotating shaft 14 to rotate synchronously through the first chain 142, a fixed column 143 is fixedly sleeved in the middle of the rotating shaft 14. A moving groove 1431 is formed on the outer side wall of the fixed column 143. Filtering areas 131 are symmetrically arranged on the filter plate 13. A plurality of filtering holes 1311 are evenly arranged in the filtering areas 131. Particulates in the exhaust gas are filtered through the filtering holes 1311. In order to prevent the filtering holes 1311 from being blocked, a cleaning assembly 16 is correspondingly arranged above the filtering areas 131. The top end of the cleaning assembly 16 is slidably arranged in the moving groove 1431, so that the cleaning assembly 16 reciprocates up and down along the moving groove 1431 to periodically clean the filtering holes 1311. A waste gas pipe 111 is arranged in the waste gas inlet 11. Shunt pipes 112 are arranged side by side at the top end of the waste gas pipe 111. The end of the shunt pipe 112 is connected to a conical flow equalizing cover 113. A plurality of flow equalizing holes 1131 are evenly formed in the conical flow equalizing cover 113. The conical flow equalizing cover 113 is respectively arranged directly below the filtering areas 131. Through the arrangement of the conical flow equalizing cover 113, the exhaust gas is evenly distributed and directly enters the filtering areas 131 for filtering. An exhaust gas outlet 17 is also arranged at the top of the exhaust gas filter cartridge 1. The exhaust gas outlet 17 is hermetically connected to the bottom of the pickling tower 2 through a pipeline I12. A conical slag discharge port 19 is arranged at the bottom of the exhaust gas filter cartridge 1. A control valve is arranged inside the conical slag discharge port 19.

[0041] Further, as Figure 3 、 5As shown, the cleaning component 16 includes a cleaning groove 161. A plurality of cleaning rods 1611 that rotate synchronously are evenly arranged inside the cleaning groove 161. A plurality of through holes 1612 are evenly formed at the bottom of the cleaning groove 161. The bottom ends of the cleaning rods 1611 pass through the through holes 1612 and extend below the cleaning groove 161. The cleaning rods 1611 are arranged in one-to-one correspondence with the filter holes 1311. A T-shaped connecting rod 162 is fixedly arranged at the top of the cleaning groove 161. Inside the waste gas filter cylinder 1, T-shaped fixing grooves 18 are also symmetrically arranged. The top ends of the fixing grooves 18 are fixedly connected to the inner top wall of the waste gas filter cylinder 1. The connecting rod 162 is slidably arranged in the fixing groove 18. A spring 163 is fixedly arranged between the top end of the connecting rod 162 and the inner top end of the fixing groove 18. On one side of the top of the connecting rod 162 close to the rotating shaft 14, a moving column 1621 is arranged. The moving column 1621 is slidably arranged in the moving groove 1431. By moving the moving column 1621 in the moving groove 1431, the connecting rod 162 moves up and down in the fixing groove 18, driving the cleaning groove 161 to move up and down. Moreover, the moving range of the connecting rod 162 in the fixing groove 18 is greater than the moving range of the cleaning groove 161, so that the connecting rod 162 is always inside the fixing groove 18.

[0042] As Figure 5 shown, a plurality of cleaning rods 1611 are arranged in a rectangular array inside the cleaning groove 161. The plurality of cleaning rods 1611 are rotatably arranged in the through holes 1612 through bearings correspondingly. A second sprocket 16111 is fixedly sleeved on the middle part of the cleaning rod 1611. The same second chain 16112 is meshed on the outside of each row of second sprockets 16111. A third sprocket 16113 is fixedly sleeved on the top of the cleaning rod 1611. The same third chain 16114 is meshed on the outside of each column of third sprockets 16113. A second motor 16115 is arranged at the top of the cleaning groove 161. The output end of the second motor 16115 penetrates the top wall of the cleaning groove 161 and is fixedly connected to the top of one of the cleaning rods 1611. By driving one of the cleaning rods 1611 to rotate through the second motor 16115, and driving the other cleaning rods 1611 to rotate synchronously through the second chain 16112 and the third chain 16114. In order to protect the second motor 16115, a protective cover can be arranged outside the second motor 16115 to reduce its contact with the waste gas. A brush 16116 is also fixedly arranged on the peripheral side of the part of the cleaning rod 1611 below the cleaning groove 161. It should be noted that the diameter of the cleaning rod 1611 is slightly smaller than the diameter of the filter hole 1311. During the up and down movement of the cleaning rod 1611, it rotates synchronously, so that the brush 16116 abuts against the inner wall of the filter hole 1311, facilitating the cleaning of the inner wall of the filter hole 1311.

[0043] Further, as Figure 3As shown, the moving groove 1431 includes a vertically arranged first moving groove 14311 and a second moving groove 14312 arranged around the circumferential side of the fixed column 143. The top and bottom ends of the second moving groove 14312 are respectively connected to the top and bottom ends of the first moving groove 14311 in a through manner, and the circumferential directions of the second moving grooves 14312 on the two fixed columns 143 are opposite. Due to the opposite circumferential directions of the second moving grooves 14312 on the two fixed columns 143, the up-and-down moving directions of the moving grooves 1431 on both sides are opposite. With such a setting, the cleaning rods 1611 in the moving grooves 1431 on both sides clean the filtration areas 131 on both sides alternately, avoiding the complete blockage of all the filtration holes 1311 due to synchronous cleaning and affecting the filtration of waste gas. Specifically, taking the clockwise rotation of the rotating shaft 14 as an example, when the left connecting rod 162 is at the top end of the first moving groove 14311, the spring 163 is in a normal telescopic state. When the rotating shaft 14 drives the fixed column 143 to rotate clockwise, the connecting rod 162 moves downward, driving the spring 163 to stretch. When the connecting rod 163 moves to the lowest position, the moving column 1621 is at the bottom end of the first moving groove 14311. At this time, the spring 163 resets, and the connecting rod 162 returns to the top end; when the right connecting rod 162 is at the bottom end of the first moving groove 14311, the spring 163 is in a normal telescopic state. When the rotating shaft 14 drives the fixed column 143 to rotate clockwise, the connecting rod 162 moves upward, driving the spring 163 to compress. When the connecting rod 163 moves to the highest position, the moving column 1621 is at the top end of the first moving groove 14311. At this time, the spring 163 resets, and the connecting rod 162 returns to the top and bottom ends.

[0044] As Figure 3 , 4As shown in the figure, a first bevel gear 144 is fixedly sleeved at the bottom of the rotating shaft 14. U-shaped brackets 132 are symmetrically arranged on the filter plate 13. A rotating rod 1321 is rotatably arranged on the U-shaped brackets 132. A second bevel gear 1322 is fixedly sleeved at one end of the rotating rod 1321 close to the rotating shaft 14. The second bevel gear 1322 meshes with the first bevel gear 144. The other end of the rotating rod 1321 is fixedly connected to a rotating disk 1323. A positioning column 1324 is eccentrically arranged on one side of the rotating disk 1323 away from the rotating rod 1321. The positioning columns 1324 on the two rotating disks 1323 are arranged staggeredly. A fixing frame 133 is arranged on one side of the U-shaped bracket 132 away from the first bevel gear 144. The fixing frame 133 is fixedly arranged on the filter plate 13. A U-shaped fixing groove 134 is arranged on one side of the fixing frame 133 close to the U-shaped bracket 132. Moving holes 1341 are symmetrically opened at the upper and lower ends of the U-shaped fixing groove 134. A moving rod 1342 is movably arranged in the moving holes 1341. The positioning frame 1343 is fixedly connected to the opposite sides of the two moving rods 1342. A knocking block 1344 is fixedly connected to the bottom of the lower moving rod 1342. The positioning column 1324 is movably arranged in the positioning frame 1343. The first bevel gear 144 drives the second bevel gear 1322 to rotate. The second bevel gear 1322 drives the rotating rod 1321 to rotate on the U-shaped bracket 132, and drives the positioning column 1324 on the rotating disk 1323 to rotate. The positioning column 1324 drives the positioning frame 1343 to move up and down, so that the knocking block 1344 periodically strikes and vibrates the filter plate 13, and further clears the blocked particulate matter in the filter holes 1311. Further, the positioning columns 1324 on the two rotating disks 1323 are arranged staggeredly, so that the knocking blocks 1344 on both sides alternately strike the filter plate 13.

[0045] In order to fix the rotating rod 1325 and prevent it from disengaging from the U-shaped bracket 132 during rotation, a plurality of U-shaped grooves 1325 are parallelly opened on the U-shaped bracket 132. A plurality of annular columns 13211 are correspondingly and parallelly sleeved on the rotating rod 1321. The annular columns 13211 are rotatably arranged in the U-shaped grooves 1325.

[0046] As a preferred implementation manner of this embodiment, as Figures 6 - 8As shown, the ultraviolet decomposition device 4 includes a housing 41 with a regular polygon cross-section. In this embodiment, it is preferably a regular octagon. The bottom of the housing 41 is provided with feet 411, and the top of the housing 41 is hinged with a rotating plate 412. To ensure the sealing of the ultraviolet decomposition device 4, a sealing ring can be provided at the bottom of the rotating plate 412, which facilitates the internal maintenance of the ultraviolet decomposition device 4 through the rotating plate 412. A gas inlet 413 is provided at the bottom of the housing 41, and a gas outlet 414 is provided at the top of the side wall of the housing 41. A support frame 42 is arranged inside the housing 41. A third motor 43 is fixedly arranged at the bottom of the housing 41 through a motor bracket. The output end of the third motor 43 is fixedly connected to the center of the bottom of the support frame 42. The support frame 42 includes a bottom plate 421 and a top plate 422. A connecting column 423 is fixedly connected between the center of the top of the bottom plate 421 and the center of the bottom of the top plate 422. A plurality of fixing grooves 4211 are evenly arranged along the circumferential direction at the top edge of the bottom plate 421. A plurality of fixing holes 4221 are correspondingly opened along the circumferential direction at the edge of the top plate 422. An ultraviolet lamp strip 424 is movably arranged in the fixing holes 4221, and the bottom end of the ultraviolet lamp strip 424 passes through the fixing holes 4221 and is fixedly arranged in the fixing grooves 4211, which facilitates the removal, placement and maintenance of the ultraviolet lamp strip 424. During the use of the ultraviolet photolysis equipment, if it is not cleaned for a long time, a certain amount of oil stain may adhere to the inner wall of the device and the surface of the lamp tube, which will not only affect the photolysis efficiency, but also may have the hidden danger of fire accidents. Therefore, the inside of the equipment needs to be regularly maintained. In addition, a quartz sleeve is installed on the ultraviolet lamp strip 424, which not only has a high transmittance, but also can prevent the ultraviolet lamp strip 424 from directly contacting the waste gas. The ultraviolet lamp strip 424 is electrically connected to an external power controller. Catalyst layers are arranged on the inner side wall of the housing 41 and the outer side wall of the connecting column 423. During use, the support frame 42 is controlled to rotate by the third motor 43, and the rotation speed of the support frame 42 is controlled to prevent the ultraviolet lamp strip 424 from being thrown out. The catalyst layers on the inner side wall of the housing 41 and the outer side wall of the connecting column 423 promote the photolysis of the waste gas and improve the treatment efficiency of the waste gas.

[0047] Furthermore, a plurality of gas circulation holes 425 are evenly opened on the bottom plate 421 and the top plate 422, which facilitates the flow of the waste gas in the housing 41. A plurality of partition plates 4222 are arranged along the circumferential direction at the bottom of the top plate 422. The plurality of partition plates 4222 are arranged between the fixing holes 4221 and the connecting column 423, and the lengths of the plurality of partition plates 4222 increase sequentially along the circumferential direction. Through the arrangement of the plurality of partition plates 4222, when the support frame 42 rotates, it drives the plurality of partition plates 4222 to rotate. The plurality of partition plates 4222 with different lengths further stir the waste gas in the housing 41, so that the waste gas is fully contacted with the ultraviolet light, and further improves the ultraviolet photolysis efficiency of the waste gas.

[0048] An exhaust gas treatment process includes the following steps:

[0049] Step 1: The centrally collected waste gas enters the waste gas filter cartridge 1 from the waste gas inlet 11 for filtration to remove the particulate matter entrained in the waste gas.

[0050] Step 2: The filtered waste gas successively passes through the acid washing tower 2 and the alkali washing tower 3 to preliminarily remove the alkaline substances and acidic substances in the waste gas.

[0051] Step 3: The waste gas is further decomposed by ultraviolet rays through the parallelly arranged ultraviolet decomposition device 4, and the treated gas enters the adsorption tower 5.

[0052] Step 4: The adsorption tower 5 is used to adsorb the excess ozone generated by ultraviolet photolysis, and the outlet gas is discharged after being determined to meet the standards by the gas detector 6.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas treatment device, characterized in that: The invention comprises a waste gas filter cartridge (1), a pickling tower (2), an alkali cleaning tower (3), an ultraviolet decomposition device (4) arranged in parallel, and an adsorption tower (5). The bottom of the side wall of the waste gas filter cartridge (1) is provided with a waste gas inlet (11). The top of the waste gas filter cartridge (1) is sealedly connected to the bottom of the pickling tower (2) through a pipeline I (12). The top of the pickling tower (2) is sealedly connected to the bottom of the alkali cleaning tower (3) through a pipeline II (21). The top of the alkali cleaning tower (3) is sealedly connected to the ultraviolet decomposition device (4) arranged in parallel through a pipeline III (31). The top of the side wall of the ultraviolet decomposition device (4) is connected to the same adsorption tower (5) through a pipeline IV (44). A gas detector (6) is provided at the outlet of the adsorption tower (5).

2. The exhaust gas treatment device according to claim 1, characterized in that: A filter plate (13) is installed inside the exhaust gas filter cartridge (1), and a rotating shaft (14) is symmetrically arranged between the filter plate (13) and the inner top wall of the exhaust gas filter cartridge (1). A first motor (15) is arranged on the top of the exhaust gas filter cartridge (1), and the output end of the first motor (15) is fixedly connected to one of the rotating shafts (14). A first sprocket (141) is fixedly sleeved above the rotating shaft (14), and the outer sides of the two first sprockets (141) are meshingly sleeved with the same first chain (142). A fixed column (143) is fixedly sleeved in the middle of the rotating shaft (14), and a movable groove (1431) is opened on the outer side wall of the fixed column (143). A filter area (131) is symmetrically arranged on the filter plate (13), and a plurality of filter holes are evenly arranged in the filter area (131). (1311), a cleaning component (16) is correspondingly arranged above the filtering area (131), and the top of the cleaning component (16) is slidably arranged in the movable groove (1431), and a waste gas pipe (111) is arranged in the waste gas inlet (11), and a diversion pipe (112) is arranged side by side at the top of the waste gas pipe (111), and the end of the diversion pipe (112) is connected to a conical flow equalizing cover (113), and a plurality of flow equalizing holes (1131) are evenly opened on the conical flow equalizing cover (113), and the conical flow equalizing cover (113) is respectively arranged directly below the filtering area (131), and a waste gas outlet (17) is also arranged on the top of the waste gas filter cartridge (1), and the waste gas outlet (17) is sealed and connected to the bottom of the pickling tower (2) through the pipeline I (12), and a conical slag discharge port (19) is arranged at the bottom of the waste gas filter cartridge (1).

3. The exhaust gas treatment device according to claim 2, characterized in that: The cleaning assembly (16) comprises a cleaning groove (161), a plurality of synchronously rotating cleaning rods (1611) are evenly arranged inside the cleaning groove (161), a plurality of through holes (1612) are evenly opened at the bottom of the cleaning groove (161), the bottom ends of the cleaning rods (1611) pass through the through holes (1612) and extend to the bottom of the cleaning groove (161), the cleaning rods (1611) are arranged one-to-one with the filter holes (1311), a T-shaped connecting rod (162) is fixedly arranged at the top of the cleaning groove (161), and the waste A T-shaped fixing groove (18) is symmetrically arranged inside the exhaust filter cartridge (1), the top of the fixing groove (18) is fixedly connected to the inner top wall of the exhaust filter cartridge (1), the connecting rod (162) is slidably arranged in the fixing groove (18), a spring (163) is fixedly arranged between the top of the connecting rod (162) and the top of the fixing groove (18), a movable column (1621) is arranged on the side of the top of the connecting rod (162) close to the rotating shaft (14), and the movable column (1621) is slidably arranged in the movable groove (1431).

4. The exhaust gas treatment device according to claim 1, characterized in that: A plurality of cleaning rods (1611) are arranged in a rectangular array inside the cleaning groove (161), and the plurality of cleaning rods (1611) are rotatably arranged in the through hole (1612) via bearings. A second sprocket (16111) is arranged on a fixed sleeve in the middle of the cleaning rod (1611), and a second chain (16112) is meshedly arranged on the outer side of each row of the second sprockets (16111). A third sprocket (16112) is arranged on a fixed sleeve at the top of the cleaning rod (1611). 13), the outer side of each row of third sprockets (16113) is meshed with a third chain (16114), a second motor (16115) is arranged at the top of the cleaning groove (161), an output end of the second motor (16115) passes through the top wall of the cleaning groove (161) and is fixedly connected to the top of one of the cleaning rods (1611), and a brush (16116) is also fixedly arranged on the circumference of the cleaning rod (1611) located below the cleaning groove (161).

5. The exhaust gas treatment device according to claim 1, characterized in that: The movable groove (1431) includes a first movable groove (14311) arranged vertically and a second movable groove (14312) arranged around the circumference of the fixed column (143), and the top and bottom ends of the second movable groove (14312) are respectively connected to the top and bottom ends of the first movable groove (14311), and the surrounding directions of the second movable grooves (14312) on the two fixed columns (143) are opposite.

6. The exhaust gas treatment device according to claim 1, characterized in that: A first bevel gear (144) is fixedly sleeved at the bottom of the rotating shaft (14). U-shaped brackets (132) are symmetrically arranged on the filter plate (13). A rotating rod (1321) is rotatably arranged on the U-shaped brackets (132). A second bevel gear (1322) is fixedly sleeved at one end of the rotating rod (1321) close to the rotating shaft (14). The second bevel gear (1322) meshes with the first bevel gear (144). The other end of the rotating rod (1321) is fixedly connected to a rotating disc (1323). A positioning column (1324) is eccentrically arranged on one side of the rotating disc (1323) away from the rotating rod (1321). The positioning columns (1324) on the two rotating discs (1323) are staggered. A fixing frame (133) is arranged on one side of the U-shaped bracket (132) away from the first bevel gear (144). The fixing frame (133) is fixedly arranged on the filter plate (13). An L-shaped fixing groove (134) is arranged on one side of the fixing frame (133) close to the U-shaped bracket (132). Moving holes (1341) are symmetrically opened at the upper and lower ends of the L-shaped fixing groove (134). A moving rod (1342) is movably arranged in the moving holes (1341). The positioning columns (1324) are movably arranged in the positioning frame (1343).

7. The exhaust gas treatment device according to claim 6, characterized in that: A plurality of U-shaped grooves (1325) are parallelly opened on the U-shaped brackets (132). A plurality of annular columns (13211) are correspondingly and parallelly sleeved on the rotating rod (1321). The annular columns (13211) are rotatably arranged in the U-shaped grooves (1325).

8. The exhaust gas treatment device according to claim 1, characterized in that: The ultraviolet decomposition device (4) comprises a shell (41) with a regular polygonal cross section, a support leg (411) is arranged at the bottom of the shell (41), a rotating plate (412) is hingedly connected to the top of the shell (41), a gas inlet (413) is arranged at the bottom of the shell (41), and a gas outlet (414) is arranged at the top of the side wall of the shell (41), a support frame (42) is arranged inside the shell (41), a third motor (43) is fixedly arranged at the bottom of the shell (41) through a motor bracket, an output end of the third motor (43) is fixedly connected to the bottom center of the support frame (42), and the support frame (42) comprises a bottom plate (421), a top plate (422), and a bottom A connecting column (423) is fixedly connected between the top center of the plate (421) and the bottom center of the top plate (422); a plurality of fixing grooves (4211) are evenly arranged along the circumference of the top edge of the bottom plate (421); a plurality of fixing holes (4221) are correspondingly opened along the circumference of the edge of the top plate (422); an ultraviolet light strip (424) is movably arranged in the fixing hole (4221); the bottom end of the ultraviolet light strip (424) passes through the fixing hole (4221) and is fixed in the fixing groove (4211); the ultraviolet light strip (424) is electrically connected to an external power controller; and a catalyst layer is arranged on the inner wall of the shell (41) and the outer wall of the connecting column (423).

9. The exhaust gas treatment device according to claim 8, characterized in that: The bottom plate (421) and the top plate (422) are also evenly provided with a plurality of gas circulation holes (425); the bottom of the top plate (422) is provided with a plurality of partition plates (4222) along the circumferential direction; the plurality of partition plates (4222) are provided between the fixing holes (4221) and the connecting columns (423); and the lengths of the plurality of partition plates (4222) are increased sequentially along the circumferential direction.

10. A waste gas treatment process, characterized in that: The following steps are involved: Step 1: The collected exhaust gas enters the exhaust gas filter cartridge (1) from the exhaust gas inlet (11) for filtration to remove particulate matter entrained in the exhaust gas; Step 2: the filtered waste gas passes through an acid washing tower (2) and an alkali washing tower (3) in sequence to preliminarily remove alkaline and acidic substances in the waste gas; Step 3, further ultraviolet decomposition of the waste gas is carried out by ultraviolet decomposition devices (4) arranged in parallel, and the treated gas enters an adsorption tower (5); Step 4: The excess ozone generated by ultraviolet photolysis is adsorbed by an adsorption tower (5), and the outlet gas is discharged after being tested by a gas detector (6) to meet the standards.

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