Chemical waste gas purification tower

Abstract

The application is suitable for the chemical industry, and provides a waste gas purification tower for chemical industry, which comprises a tower body, a treatment cavity is arranged on the inner side of the tower body, a filtering mechanism is arranged in the treatment cavity, a waste gas outlet pipe and a waste gas inlet pipe are arranged on the upper part and the lower part of the tower body respectively, and the waste gas purification tower further comprises: an initial filtering and air distribution mechanism, which is installed on the lower part of the tower body and is used for filtering dust from the waste gas and then distributing and conveying the waste gas to the lower part of the tower body; and a spraying purification mechanism, which is installed in the tower body and is arranged between the filtering mechanism and the initial filtering and air distribution mechanism, and is used for spraying and purifying the waste gas and removing dust. The arrangement of the spraying purification mechanism, the input and pretreatment of the waste gas before spraying and purification are reasonable, and the effect of the chemical waste gas purification treatment is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of chemical industry, and particularly relates to a waste gas purification tower for chemical industry. BACKGROUND

[0002] The chemical waste gas refers to the toxic and harmful gas discharged by the chemical plant in the chemical production.

[0003] The chemical waste gas often contains many types of pollutants, and has complex physical and chemical properties and different toxicities, which seriously pollute the environment and affect human health.

[0004] The chemical waste gas produced by different chemical production industries is quite different. For example, the waste gas produced by the chlor-alkali industry mainly contains chlorine, hydrogen chloride, chloroethylene, mercury, acetylene, etc., and the waste gas produced by the nitrogen fertilizer industry mainly contains nitrogen oxides, urea dust, carbon monoxide, ammonia, sulfur dioxide, methane, etc.

[0005] The chemical waste gas needs to be purified before being discharged, otherwise the ecological environment will be polluted.

[0006] In the prior art, the chemical waste gas is often purified by using a spraying purification structure supplemented by a filtering structure, but the arrangement of the spraying purification structure and the input and pretreatment of the waste gas before the spraying purification are not reasonable enough, which affects the effect of the chemical waste gas purification treatment.

[0007] Therefore, in view of the above status, it is urgent to develop a waste gas purification tower for chemical industry to overcome the deficiencies in the current actual application. SUMMARY

[0008] The purpose of the embodiment of the present application is to provide a waste gas purification tower for chemical industry, which aims to solve the problem that the arrangement of the spraying purification structure and the input and pretreatment of the waste gas before the spraying purification are not reasonable enough in the prior art, which affects the effect of the chemical waste gas purification treatment.

[0009] The embodiment of the present application is implemented as follows: a waste gas purification tower for chemical industry, comprising a tower body, a treatment cavity is arranged on the inner side of the tower body, a filtering mechanism is arranged in the treatment cavity, a waste gas outlet pipe and a waste gas inlet pipe are arranged at the upper part and the lower part of the tower body respectively, the waste gas is input through the waste gas inlet pipe, filtered and purified by the filtering mechanism, and then discharged from the waste gas outlet pipe, further comprising: an initial filtering and air distribution mechanism, the initial filtering and air distribution mechanism is installed at the lower part of the tower body, the waste gas is transported to the initial filtering and air distribution mechanism through the waste gas inlet pipe, and the initial filtering and air distribution mechanism is used for filtering dust from the waste gas and then distributing and transporting the waste gas to the lower part of the tower body; a spraying purification mechanism, the spraying purification mechanism is installed in the tower body, and the spraying purification mechanism is arranged between the filtering mechanism and the initial filtering and air distribution mechanism, the waste gas treated by the initial filtering and air distribution mechanism is transported to the spraying purification mechanism, and the spraying purification mechanism is used for spraying purification and dust removal of the waste gas, and the waste gas treated by the spraying purification mechanism is transported to the filtering mechanism.

[0010] Further technical solutions, the filter mechanism includes filter core and support ring, the filter core is the middle part arc shape upward protruding structure, the outer ring of filter core and processing cavity wall sliding connection, support ring is fixed on the processing cavity wall, support ring is used for supporting filter core.

[0011] Further technical solutions, the top of the tower body is detachably provided with a tower cover, the waste gas outlet pipe is arranged at the middle part of the tower cover, and the waste gas outlet pipe is communicated with the processing cavity;The filter core includes a metal net rack, and a high-quality activated carbon layer and a HEPA high-efficiency filter layer are sequentially arranged on the inner side of the metal net rack from bottom to top.

[0012] Further technical solutions, the primary filter cloth gas mechanism includes an air outlet, a gas distribution pipe, a main pipe, a transmission groove, a gas guide hole, a sleeve ring, a guide plate, a transmission head, a dust filter plate, a scraper and a connecting shaft, a primary filter cavity is formed in the lower side of the processing cavity in the tower body, a main pipe is rotatably installed at the middle part between the processing cavity and the primary filter cavity, a plurality of gas distribution pipes are circumferentially distributed and installed at the upper end of the main pipe in the lower part of the processing cavity, an air outlet is arranged on the side surface of the end of the gas distribution pipe away from the main pipe, a gas guide hole is formed in the outer side of the bottom of the main pipe, the primary filter cavity is communicated with the inner cavity of the main pipe through the gas guide hole, and the air outlet is communicated with the inner cavity of the main pipe through the gas distribution pipe;A sleeve ring is rotatably installed on the main pipe in the primary filter cavity, a plurality of guide plates are circumferentially distributed and fixedly installed on the outer side of the sleeve ring, and guide grooves that are slidably connected with the guide plates are formed in the side wall of the primary filter cavity;The dust filter plate is arranged in the primary filter cavity on the lower side of the main pipe, a connecting shaft is rotatably installed at the middle part of the dust filter plate, a transmission head is arranged at the upper end of the connecting shaft, a transmission groove that can be transmissionally connected with the transmission head is formed in the middle part of the bottom of the main pipe, a plurality of scrapers are circumferentially distributed and installed on the lower side of the connecting shaft of the dust filter plate, and the scrapers are arranged in close contact with the lower surface of the dust filter plate, wherein the scrapers are used for scraping off the dust on the lower surface of the dust filter plate;The waste gas inlet pipe is communicated with the primary filter cavity on the lower side of the dust filter plate.

[0013] Further technical solutions, the transmission head is a prism structure;A boss is arranged in the middle part of the bottom of the processing cavity, a flow guide plate is arranged on the main pipe on the lower side of the gas distribution pipe, and the bottom outer ring of the flow guide plate is downwardly inclined;Elastic pads are arranged at the upper and lower ends of the guide groove;A telescopic sealing cylinder is further arranged at the lower end of the sleeve ring, and the lower end of the telescopic sealing cylinder is fixed to the side wall of the primary filter cavity.

[0014] Further technical solutions, the inner side of the primary filter cavity is further provided with an anti-reverse plate, the anti-reverse plate is arranged on the lower side of the waste gas inlet pipe, the anti-reverse plate is a conical structure with the middle part downwardly inclined, and a dust falling opening is formed in the middle part of the anti-reverse plate;The bottom of the primary filter cavity is a hemispherical structure, and the bottom of the tower body is further provided with a dust discharge opening communicated with the bottom of the primary filter cavity.

[0015] Further technical solutions, a plurality of gas outlets on the air distribution pipe are sequentially arranged; the waste gas inlet pipe is further provided with a regulating valve, and the regulating valve is used for controlling the flow rate of the waste gas in the waste gas inlet pipe.

[0016] Further technical solutions, when the amount of waste gas delivered by the waste gas inlet pipe to the primary filtering cavity per unit time is small, the gravity of the air distribution pipe, the main pipe, the sleeve ring and the guide plate is greater than the upward thrust of the waste gas, the transmission head and the transmission groove are in transmission connection, and when the waste gas is discharged from the air distribution pipe, the whole formed by the air distribution pipe and the main pipe can be rotated to drive the whole formed by the transmission head, the connecting shaft and the scraper to rotate, so that the scraper scrapes off the dust on the lower surface of the dust filter plate; when the amount of waste gas delivered by the waste gas inlet pipe to the primary filtering cavity per unit time is large, the gravity of the air distribution pipe, the main pipe, the sleeve ring and the guide plate is smaller than the upward thrust of the waste gas, the whole formed by the air distribution pipe, the main pipe, the sleeve ring and the guide plate moves upward, the transmission head and the transmission groove are separated, and when the waste gas is discharged from the air distribution pipe, the whole formed by the air distribution pipe and the main pipe can be rotated.

[0017] Further technical solutions, the spray purification mechanism comprises a lifting pipe, a filter plate, a lifting pump, a motor, a motor base, a first supporting rod, a second supporting rod, a purification plate, a distribution ball, a perforated plate, a liquid spraying head, a rotating pipe, a pulley, a transmission belt and a liquid distribution disc, the purification plate is installed and fixed in a treatment cavity between the filtering mechanism and the primary air distribution mechanism, a plurality of purification cavities are formed in the purification plate, an upper air outlet hole is arranged at the top of each purification cavity and communicates with the treatment cavity on the upper side of the purification plate, a lower air inlet hole is arranged at the bottom of each purification cavity and communicates with the treatment cavity on the lower side of the purification plate, a distribution ball is arranged in the inner side of each purification cavity, a plurality of perforated plates are circumferentially arranged on the outer side of the distribution ball and cooperate with the cavity wall of the purification cavity, the perforated plates are in the shape of a fan, the liquid distribution disc is supported and fixed on the upper side of the purification plate through the second supporting rod, the rotating pipe is fixed in the middle of the top of the distribution ball, the rotating pipe passes through the upper air outlet hole and the liquid distribution disc in sequence, the rotating pipe is in sealing and rotating connection with the top and the bottom of the liquid distribution disc, the pulley is installed and fixed at the end of the rotating pipe, the motor base is supported and fixed on the upper side of the liquid distribution disc through the first supporting rod, the motor is installed and fixed on the motor base, the output end of the motor is in transmission connection with the middle rotating pipe, and the pulley on the middle rotating pipe is further in transmission connection with the pulley on the outer rotating pipe through the transmission belt; a plurality of liquid spraying heads are arranged on the rotating pipe at the upper part of each purification cavity, the inner side of the liquid distribution disc is in a hollow structure, a liquid guide hole is formed in the rotating pipe on the inner side of the liquid distribution disc and communicates with the liquid spraying head through the inner cavity of the rotating pipe; a water storage cavity is formed in one side of the tower body, the lower end of the water storage cavity is located below the lower end of the treatment cavity, the lifting pump is installed at the bottom of the water storage cavity, the outlet of the lifting pump is provided with the lifting pipe, and the other end of the lifting pipe communicates with the inner cavity of the liquid distribution disc; the treatment cavity is further communicated with the water storage cavity through the liquid outlet pipe, and the filter plate is installed in the water storage cavity below the liquid outlet pipe.

[0018] In a further technical solution, the filter plate is inclined, and a discharge port is provided on the upper side of the lower end of the filter plate on the side wall of the tower body; the tower body is also provided with a liquid filling port that communicates with the top of the water storage chamber.

[0019] The present invention provides a chemical waste gas purification tower. By conventionally limiting the filtration mechanism and supplementing it with special limiting the primary filtration gas distribution mechanism and the spray purification mechanism, the waste gas can be filtered for dust by the primary filtration gas distribution mechanism and then distributed and transported to the lower part of the tower body. Then, the waste gas is sprayed and purified and dust removed by the spray purification mechanism, thereby improving the overall chemical waste gas purification effect, effectively protecting the environment, and is worthy of promotion. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main sectional view of the chemical waste gas purification tower provided in an embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional exploded view of the filtration mechanism in a chemical waste gas purification tower provided in an embodiment of the present invention.

[0022] Figure 3 This is an enlarged structural schematic diagram of the primary filtration and gas distribution mechanism in the chemical waste gas purification tower provided in an embodiment of the present invention;

[0023] Figure 4 for Figure 3 Enlarged cross-sectional view of section A;

[0024] Figure 5 for Figure 3 A three-dimensional structural diagram of the main control section;

[0025] Figure 6 for Figure 3 A three-dimensional structural diagram of the middle dust filter plate section;

[0026] Figure 7 This is a partially enlarged structural diagram of the spray purification mechanism in the chemical waste gas purification tower provided in an embodiment of the present invention;

[0027] Figure 8 for Figure 7 Enlarged sectional view of section B;

[0028] Figure 9 for Figure 7 A schematic diagram of the three-dimensional structure of the centrally distributed sphere.

[0029] In the diagram: 1-Tower cover, 2-Waste gas outlet pipe, 3-Filtration mechanism, 4-Spray purification mechanism, 5-Liquid outlet pipe, 6-Water storage chamber, 7-Primary filtration gas distribution mechanism, 8-Primary filtration chamber, 9-Control valve, 10-Waste gas inlet pipe, 11-Processing chamber, 12-Tower body, 13-Guide groove, 31-Filter element, 32-Support ring, 41-Lifting pipe, 42-Liquid filling port, 43-Filter plate, 44-Filter outlet, 45-Lifting pump, 46-Motor, 47-Motor base, 48-First support rod, 49-Second support rod, 410-Purification plate, 411-Lower air inlet, 412-Purification plate 413-Distribution ball, 414-Perforated plate, 415-Upper air outlet, 416-Spray head, 417-Rotating pipe, 418-Pulley, 419-Drive belt, 420-Distribution plate, 421-Guide hole, 71-Air outlet, 72-Air distribution pipe, 73-Guide plate, 74-Main pipe, 75-Elastic pad, 76-Anti-backflow plate, 77-Dust outlet, 78-Transmission groove, 79-Air guide hole, 710-Collar, 711-Guide plate, 712-Retractable sealing cylinder, 713-Transmission head, 714-Dust filter plate, 715-Scraper, 716-Connecting shaft. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0032] like Figure 1 As shown, an embodiment of the present invention provides a chemical waste gas purification tower, including a tower body 12, a treatment chamber 11 provided on the inner side of the tower body 12, a filter mechanism 3 provided in the treatment chamber 11, and waste gas outlet pipe 2 and waste gas inlet pipe 10 respectively provided on the upper and lower parts of the tower body 12. Waste gas is input through the waste gas inlet pipe 10, filtered and purified by the filter mechanism 3, and discharged from the waste gas outlet pipe 2. The tower body 12 also includes:

[0033] The primary filtration and gas distribution mechanism 7 is installed at the lower part of the tower body 12. Waste gas is supplied to the primary filtration and gas distribution mechanism 7 through the waste gas inlet pipe 10. The primary filtration and gas distribution mechanism 7 is used to filter the waste gas and then distribute and transport it to the lower part of the tower body 12.

[0034] The spray purification mechanism 4 is installed inside the tower body 12 and is located between the filter mechanism 3 and the primary filter gas distribution mechanism 7. The exhaust gas treated by the primary filter gas distribution mechanism 7 is conveyed to the spray purification mechanism 4. The spray purification mechanism 4 is used to spray and purify the exhaust gas and remove dust. The exhaust gas treated by the spray purification mechanism 4 is conveyed to the filter mechanism 3.

[0035] In the embodiment of the present application, through the general limitation of the filtering mechanism 3, supplemented by the special limitation of the primary filtering air distribution mechanism 7 and the spraying purification mechanism 4, the waste gas can be filtered and then distributed to the lower part of the tower body 12 through the primary filtering air distribution mechanism 7, and then the waste gas can be sprayed and purified and dedusted through the spraying purification mechanism 4, so as to improve the overall chemical waste gas purification treatment effect, effectively protect the environment, and be worth promoting.

[0036] As shown in Figures 1-2 As a preferred embodiment of the present application, the processing cavity 11 is preferably a cylindrical structure, the filtering mechanism 3 comprises a filter core 31 and a support ring 32, the filter core 31 is preferably a middle arc-shaped upward protruding structure, the outer ring of the filter core 31 is slidably connected with the cavity wall of the processing cavity 11, and the support ring 32 is fixed on the cavity wall of the processing cavity 11 and is used for supporting the filter core 31, so that the filter core 31 is convenient to replace. In addition, a handle (not shown) can be arranged on the upper side of the filter core 31, so as to facilitate the taking and placing of the filter core 31.

[0037] Further, the top of the tower body 12 is detachably provided with a tower cover 1, the waste gas outlet pipe 2 is arranged at the middle part of the tower cover 1, and the waste gas outlet pipe 2 is communicated with the processing cavity 11. The tower cover 1 is arranged to facilitate the taking and placing of the filter core 31 and the maintenance of the processing cavity 11.

[0038] Further, the filter core 31 comprises a metal mesh frame, and a high-quality activated carbon layer and a HEPA high-efficiency filtering layer are sequentially arranged on the inner side of the metal mesh frame from bottom to top. The high-quality activated carbon has the characteristics of large specific surface area, developed pore structure, strong adsorption capacity, uniform particle distribution, and large wear resistance, and can achieve better adsorption effect compared with ordinary activated carbon, thereby greatly improving the waste gas purification capacity. The HEPA high-efficiency filtering layer has the characteristics that air can pass through, but small particles cannot pass through, and the removal efficiency of particles with a radius of 0.15 microns or more is as high as 99.5% or more. In addition, a denitration filtering layer can be arranged as needed, which can be sintered with a denitration catalyst on the surface of the metal mesh frame. Herein, no limitation is made.

[0039] As shown in Figures 3-6 As a preferred embodiment of the present application, the primary filtering air distribution mechanism 7 comprises an air outlet 71, an air distribution pipe 72, a main pipe 74, a transmission groove 78, a gas guide hole 79, a sleeve ring 710, a guide plate 711, a transmission head 713, a dust filtering plate 714, a scraper 715, and a connecting shaft 716. A primary filtering cavity 8 is formed in the lower side of the processing cavity 11 in the tower body 12, and a main pipe 74 is rotatably installed at the middle part between the processing cavity 11 and the primary filtering cavity 8. A plurality of air distribution pipes 72 are circumferentially distributed and installed at the upper end of the main pipe 74, and an air outlet 71 is arranged on the side surface of the end of the air distribution pipe 72 away from the main pipe 74. The air outlets 71 on the plurality of air distribution pipes 72 are sequentially arranged (as shown in Figure 5The bottom outer side of the main pipe 74 is provided with a gas guide hole 79, the primary filtering cavity 8 is communicated with the inner cavity of the main pipe 74 through the gas guide hole 79, and the gas outlet 71 is communicated with the inner cavity of the main pipe 74 through the gas distribution pipe 72; the lantern ring 710 is rotatably installed on the main pipe 74 in the primary filtering cavity 8, a plurality of guide plates 711 are circumferentially distributed and fixedly installed on the outer side of the lantern ring 710, and a guide groove 13 in sliding connection with the guide plates 711 is correspondingly provided on the side cavity wall of the primary filtering cavity 8; the dust filtering plate 714 is arranged in the primary filtering cavity 8 on the lower side of the main pipe 74, a connecting shaft 716 is rotatably installed at the middle part of the dust filtering plate 714, a transmission head 713 is arranged at the upper end of the connecting shaft 716, the transmission head 713 is preferably a prism structure, a transmission groove 78 capable of being in transmission connection with the transmission head 713 is provided in the middle part of the bottom of the main pipe 74, and a plurality of scrapers 715 are circumferentially distributed and installed on the lower end of the connecting shaft 716 on the lower side of the dust filtering plate 714 and abut against the lower surface of the dust filtering plate 714, the scrapers 715 are used for scraping off the dust on the lower surface of the dust filtering plate 714, and the waste gas inlet pipe 10 is communicated with the primary filtering cavity 8 on the lower side of the dust filtering plate 714.

[0040] Further, the bottom middle part of the processing cavity 11 is provided with a boss, the lower side of the gas distribution pipe 72 is provided with a flow guide plate 73 installed on the main pipe 74, the flow guide plate 73 is preferably downwardly inclined at the outer bottom ring, and through the arrangement of the boss and the flow guide plate 73, the sprayed water body can be prevented from flowing down from the gap between the main pipe 74 and the tower body 12, and the reliability is improved.

[0041] Further, the upper and lower ends of the guide groove 13 are both provided with elastic pads 75, the guide plates 711 can be elastically supported through the elastic pads 75, and the noise is reduced.

[0042] Further, the lower end of the lantern ring 710 is also provided with a telescopic sealing cylinder 712, the lower end of the telescopic sealing cylinder 712 is fixed on the side cavity wall of the primary filtering cavity 8, the telescopic sealing cylinder 712 is used for preventing the waste gas from flowing upward from the guide groove 13, that is, limiting the waste gas to only enter the inner cavity of the main pipe 74 from the gas guide hole 79, and the reliability is improved.

[0043] Further, the material of the telescopic sealing cylinder 712 is not limited, and it can be telescopic; the material and aperture of the dust filtering plate 714 are not limited, and it can filter dust; and the structure of the scraper 715 is not limited, and it can scrape off the dust on the lower surface of the dust filtering plate 714.

[0044] Further, the inner side of the primary filtering cavity 8 is also provided with an anti-reverse plate 76, which is arranged at the lower side of the waste gas inlet pipe 10. The anti-reverse plate 76 is a conical structure with the middle part being inclined downward. The middle part of the anti-reverse plate 76 is provided with a dust falling opening. The upper part of the primary filtering cavity 8 is preferably a cylindrical structure, and the bottom of the primary filtering cavity 8 is preferably a hemispherical structure. The bottom of the tower body 12 is also provided with a dust discharge opening 77 which is in communication with the bottom of the primary filtering cavity 8. The dust discharge opening 77 is used for discharging the collected dust.

[0045] Further, the waste gas inlet pipe 10 is also provided with a regulating valve 9. The regulating valve 9 is used for controlling the flow rate of the waste gas in the waste gas inlet pipe 10.

[0046] In the embodiment of the present application, when the amount of waste gas delivered by the waste gas inlet pipe 10 to the primary filtering cavity 8 per unit time is small, the gravity of the air distribution pipe 72, the main pipe 74, the sleeve ring 710 and the guide plate 711 is greater than the upward thrust of the waste gas. The transmission head 713 and the transmission groove 78 are in transmission connection. When the waste gas is discharged from the air distribution pipe 72, it can push the whole formed by the air distribution pipe 72 and the main pipe 74 to rotate, so as to drive the whole formed by the transmission head 713, the connecting shaft 716 and the scraper 715 to rotate, so that the scraper 715 can scrape the dust on the lower surface of the dust filtering plate 714. When the amount of waste gas delivered by the waste gas inlet pipe 10 to the primary filtering cavity 8 per unit time is large, the gravity of the air distribution pipe 72, the main pipe 74, the sleeve ring 710 and the guide plate 711 is smaller than the upward thrust of the waste gas. The whole formed by the air distribution pipe 72, the main pipe 74, the sleeve ring 710 and the guide plate 711 moves upward. The transmission head 713 and the transmission groove 78 are separated. When the waste gas is discharged from the air distribution pipe 72, it can push the whole formed by the air distribution pipe 72 and the main pipe 74 to rotate. The above two modes can be realized by controlling the regulating valve 9. The input of the waste gas is controlled at a certain speed. The transmission head 713 and the transmission groove 78 can always be separated. The rotation speed of the air distribution pipe 72 is improved, that is, the distribution effect of the waste gas is improved. When it is needed to scrape the dust on the lower surface of the dust filtering plate 714 by the scraper 715, it is only needed to reduce the input speed of the waste gas by the regulating valve 9, which is convenient and fast.

[0047] As Figure 1 , 7As shown in Fig. 9, as a preferred embodiment of the present application, the spray cleaning mechanism 4 comprises a lifting pipe 41, a filter plate 43, a lifting pump 45, a motor 46, a motor base 47, a first supporting rod 48, a second supporting rod 49, a cleaning plate 410, a distribution ball 413, a porous plate 414, a spray head 416, a rotating pipe 417, a pulley 418, a transmission belt 419 and a liquid distribution disc 420. The cleaning plate 410 is installed in the treatment cavity 11 between the filtering mechanism 3 and the primary filtering cloth gas mechanism 7. A plurality of cleaning cavities 412 are formed in the cleaning plate 410. The top of each cleaning cavity 412 is provided with an upper air outlet hole 415 which is in communication with the treatment cavity 11 on the upper side of the cleaning plate 410. The bottom of each cleaning cavity 412 is provided with a lower air inlet hole 411 which is in communication with the treatment cavity 11 on the lower side of the cleaning plate 410. The inner side of each cleaning cavity 412 is provided with a distribution ball 413. A plurality of porous plates 414 are circumferentially arranged on the outer side of the distribution ball 413 and are in cooperation with the cavity wall of the cleaning cavity 412. The porous plates 414 are preferably in the shape of a fan. The upper side of the cleaning plate 410 is supported and fixed by the second supporting rod 49 and is provided with the liquid distribution disc 420. The top of the distribution ball 413 is fixed with the rotating pipe 417 which passes through the upper air outlet hole 415 and the liquid distribution disc 420 in sequence. The rotating pipe 417 is sealingly connected to the top and bottom of the liquid distribution disc 420. The end of the rotating pipe 417 is provided with the pulley 418. The upper side of the liquid distribution disc 420 is supported and fixed by the first supporting rod 48 and is provided with the motor base 47. The motor base 47 is installed with the motor 46. The output end of the motor 46 is in transmission connection with the middle rotating pipe 417. The pulley 418 on the middle rotating pipe 417 is also in transmission connection with the pulley 418 on the outer rotating pipe 417 through the transmission belt 419. In this way, all the rotating pipes 417 are driven to rotate synchronously by the motor 46. The specific structure is not limited. A plurality of spray heads 416 are arranged on the upper part of the cleaning cavity 412 and on the rotating pipe 417. The inner side of the liquid distribution disc 420 is in a hollow structure. The rotating pipe 417 on the inner side of the liquid distribution disc 420 is provided with a liquid guide hole 421. The liquid guide hole 421 is in communication with the spray head 416 through the inner cavity of the rotating pipe 417, i.e. the spray liquid is delivered to the spray head 416 through the liquid guide hole 421.

[0048] Further, the filter plate 43 is arranged obliquely, and a discharge port 44 is arranged on the upper side of the lower end of the filter plate 43 and on the side wall of the tower body 12, which is used for discharging the impurities filtered on the filter plate 43, and the filter plate 43 is not limited, and can filter the water body, which is beneficial to recycling.

[0049] In the embodiment of the present application, the second supporting rod 49 supports the liquid distribution disc 420, which is beneficial to upward discharge of the gas from the upper gas outlet 415 and stable rotation support of the liquid distribution disc 420 on the rotating pipe 417; during the spray purification, the liquid is lifted by the lifting pump 45, transported to the lifting pipe 41, then enters the inner cavity of the liquid distribution disc 420, and is distributed to each liquid guide hole 421, and finally discharged from the liquid spray head 416; the motor 46 can drive multiple rotating pipes 417 to rotate simultaneously, and then the liquid spray head 416 rotates, so that the water body is uniformly distributed in the purification cavity 412, and the spherical structure of the distribution ball 413 and the disturbance of the perforated plate 414 make the water body and the waste gas fully contact, thereby improving the spray dust removal effect. In addition, the water body falling to the lower part of the treatment cavity 11 can be discharged to the water storage cavity 6 through the liquid outlet pipe 5, and then filtered by the filter plate 43 for recycling, thereby saving energy and protecting the environment.

[0050] In the above embodiment of the present application, a waste gas purification tower for chemical industry is provided, which can filter dust from the waste gas and then distribute and transport the waste gas to the lower part of the tower body 12, and the waste gas is fully dispersed, and it is also convenient to control whether to scrape dust from the lower surface of the perforated plate 414, and the application effect is good; the spray purification mechanism 4 can spray and purify the waste gas, and the overall layout of the distribution ball 413, the perforated plate 414 and the liquid spray head 416 makes the water body and the waste gas fully contact, thereby improving the overall chemical waste gas purification treatment effect, effectively protecting the environment, and being worth popularizing.

[0051] In addition, the control, model and circuit connection of each component are not limited, and can be flexibly set in actual application.

[0052] The circuits, electronic components and modules involved are prior art, and those skilled in the art can realize them without further description, and the content protected by the present application does not involve improvement of software and methods.

[0053] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0054] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A chemical waste gas purification tower, comprising a tower body, an inner processing chamber provided within the tower body, a filtration mechanism provided within the processing chamber, and a waste gas outlet pipe and a waste gas inlet pipe respectively provided at the upper and lower parts of the tower body, wherein waste gas is input through the waste gas inlet pipe, filtered and purified by the filtration mechanism, and discharged from the waste gas outlet pipe, characterized in that... Also includes: A primary filtration and gas distribution mechanism is installed at the lower part of the tower body. Waste gas is supplied to the primary filtration and gas distribution mechanism through the waste gas inlet pipe. The primary filtration and gas distribution mechanism is used to filter dust from the waste gas and then distribute and transport it to the lower part of the tower body. The spray purification mechanism is installed inside the tower and is located between the filtration mechanism and the primary filtration and gas distribution mechanism. The exhaust gas treated by the primary filtration and gas distribution mechanism is conveyed to the spray purification mechanism. The spray purification mechanism is used to spray and purify the exhaust gas and remove dust. The exhaust gas treated by the spray purification mechanism is conveyed to the filtration mechanism. The primary filtration and air distribution mechanism includes an air outlet, an air distribution pipe, a main pipe, a transmission groove, an air guide hole, a collar, a guide plate, a transmission head, a dust filter plate, a scraper, and a connecting shaft. The lower side of the processing chamber is provided with a primary filtration chamber inside the tower. A main pipe is rotatably installed in the middle between the processing chamber and the primary filtration chamber. Multiple air distribution pipes are circumferentially distributed at the upper end of the main pipe at the lower part of the processing chamber. An air outlet is provided on the side of the air distribution pipe away from the main pipe. An air guide hole is provided on the outer side of the bottom of the main tube. The primary filter chamber is connected to the inner cavity of the main tube through the air guide hole, and the air outlet is connected to the inner cavity of the main tube through the air distribution pipe. A collar is rotatably mounted on the main pipe inside the primary filtration chamber. Multiple guide plates are circumferentially distributed and fixed on the outer side of the collar. Guide grooves that are slidably connected to the guide plates are correspondingly opened on the side wall of the primary filtration chamber. The dust filter plate is located in the primary filtration chamber on the lower side of the main pipe. A connecting shaft is rotatably installed in the middle of the dust filter plate. A transmission head is provided at the upper end of the connecting shaft. A transmission groove that can be connected to the transmission head is opened in the middle of the bottom of the main pipe. Multiple scrapers are circumferentially distributed on the lower side of the dust filter plate at the lower end of the connecting shaft. The scrapers are set close to the lower surface of the dust filter plate and are used to scrape off the dust on the lower surface of the dust filter plate. The exhaust gas inlet pipe is connected to the primary filter chamber on the lower side of the dust filter plate; The air outlets on the multiple air distribution pipes are arranged sequentially; A regulating valve is also installed on the exhaust gas inlet pipe, which is used to control the flow rate of the exhaust gas in the exhaust gas inlet pipe; When the amount of exhaust gas delivered to the primary filter chamber per unit time by the exhaust gas inlet pipe is small, the weight of the air distribution pipe, main pipe, collar and guide plate is greater than the upward thrust of the exhaust gas. The transmission head and transmission groove are connected by transmission. When the exhaust gas is discharged from the air distribution pipe, it can drive the rotation of the whole consisting of the air distribution pipe and main pipe, thereby driving the rotation of the whole consisting of the transmission head, connecting shaft and scraper, so that the scraper scrapes off the dust on the lower surface of the filter plate. When the amount of exhaust gas delivered to the primary filter chamber per unit time by the exhaust gas inlet pipe is large, the weight of the air distribution pipe, main pipe, collar, and guide plate is less than the upward thrust of the exhaust gas. The whole structure consisting of the air distribution pipe, main pipe, collar, and guide plate moves upward, the transmission head and transmission groove separate, and the exhaust gas can drive the whole structure consisting of the air distribution pipe and main pipe to rotate when it is discharged from the air distribution pipe.

2. The chemical waste gas purification tower according to claim 1, characterized in that, The filtration mechanism includes a filter element and a support ring; The filter element has an upwardly protruding arc shape in the middle. The outer ring of the filter element is slidably connected to the wall of the processing chamber. The support ring is fixed to the wall of the processing chamber and is used to support the filter element.

3. The chemical waste gas purification tower according to claim 2, characterized in that, The top of the tower body is detachably equipped with a tower cover, and the exhaust gas outlet pipe is located in the middle of the tower cover, and the exhaust gas outlet pipe is connected to the treatment chamber. The filter element includes a metal mesh frame, and the inner side of the metal mesh frame is provided with a high-quality activated carbon layer and a HEPA high-efficiency filter layer from bottom to top.

4. The chemical waste gas purification tower according to claim 1, characterized in that, The transmission head has a frustum structure; The bottom center of the processing chamber is provided with a boss, and a guide plate is installed on the lower side of the air distribution pipe on the main pipe. The guide plate is set with the bottom outer ring inclined downward. Both the upper and lower ends of the guide groove are provided with elastic pads; The lower end of the collar is also provided with a retractable sealing cylinder, the lower end of which is fixed to the side wall of the primary filtration chamber.

5. The chemical waste gas purification tower according to claim 4, characterized in that, The inner side of the primary filter chamber is also provided with an anti-backflow plate, which is located on the lower side of the exhaust gas inlet pipe. The anti-backflow plate is a cone-shaped structure that slopes downward in the middle, and a dust drop outlet is opened in the middle of the anti-backflow plate. The bottom of the primary filtration chamber is a hemispherical structure, and the bottom of the tower body is also provided with a dust discharge port that communicates with the bottom of the primary filtration chamber.

6. The chemical waste gas purification tower according to any one of claims 4-5, characterized in that, The spray purification mechanism includes a riser pipe, a filter plate, a riser pump, a motor, a motor base, a first support rod, a second support rod, a purification plate, a distribution ball, a perforated plate, a spray head, a rotating pipe, a pulley, a transmission belt, and a liquid distribution plate. The purification plate is installed and fixed in the processing chamber between the filtration mechanism and the primary filtration and air distribution mechanism. The purification plate has multiple purification chambers. The top of the purification chamber is provided with an upper air outlet that communicates with the processing chamber on the upper side of the purification plate, and the bottom of the purification chamber is provided with a lower air inlet that communicates with the processing chamber on the lower side of the purification plate. The inner side of the purification chamber is provided with a distribution ball, and multiple perforated plates that cooperate with the wall of the purification chamber are installed circumferentially on the outer side of the distribution ball. The perforated plates are fan-shaped. The upper side of the purification plate is supported and fixed by the second support rod. A rotating tube is fixed in the middle of the top of the distribution ball. The rotating tube passes through the upper air outlet and the liquid distribution plate in sequence. The rotating tube is sealed and rotatably connected to the top and bottom of the liquid distribution plate. A pulley is installed and fixed at the end of the rotating tube. The upper side of the liquid distribution plate is supported and fixed by the first support rod. A motor is installed and fixed on the motor base. The output end of the motor is connected to a middle rotating tube. The pulley on the middle rotating tube is also connected to the pulley on the outer rotating tube through a transmission belt. The upper part of the purification chamber is provided with multiple spray heads on the rotating tube. The inner side of the liquid distribution plate is a hollow structure. A liquid guiding hole is opened on the rotating tube inside the liquid distribution plate. The liquid guiding hole is connected to the spray head through the inner cavity of the rotating tube. A water storage chamber is provided on one side of the tower body. The lower end of the water storage chamber is located below the lower end of the processing chamber. A lift pump is installed at the bottom of the water storage chamber. A lift pipe is installed at the outlet of the lift pump. The other end of the lift pipe is connected to the inner cavity of the liquid distribution plate. The bottom of the processing chamber is also connected to the water storage chamber through an outlet pipe, and a filter plate is installed on the lower side of the outlet pipe inside the water storage chamber.

7. The chemical waste gas purification tower according to claim 6, characterized in that, The filter plate is inclined, and a discharge port is provided on the upper side of the lower end of the filter plate on the side wall of the tower body. The tower body is also equipped with a liquid filling port that communicates with the top of the water storage chamber.

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