Chemical reagent waste gas spraying treatment equipment and treatment method thereof

Abstract

The invention discloses chemical reagent waste gas spraying treatment equipment which comprises a spraying tower, the spraying tower comprises a tower body, an exhaust end is fixedly connected to the center of the bottom side wall of the tower body, a gas inlet end penetrating through the exhaust end is fixedly connected to the interior of the exhaust end, an inner shell is fixedly connected to the outer side surface of the gas inlet end, and an outer shell is fixedly connected to the outer side surface of the inner shell. The inner shell divides the internal space of the tower body into a spraying cavity located in the inner shell and a heat preservation cavity located between the inner shell and the tower body. The internal space of the tower body is divided into the spraying cavity on the inner side and the heat preservation cavity on the outer side by means of the inner shell, and treated waste gas with waste heat is introduced into the heat preservation cavity, so that the heat preservation cavity can be located between the tower body and the inner shell, and the temperature difference between the outer side of the tower body and the inner side of the tower body is reduced; unnecessary heat loss caused by surface heat dissipation is greatly reduced, and waste heat in waste gas can be recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a chemical reagent waste gas spray treatment device and a treatment method thereof. Background Art

[0002] Waste gas is generated during the production and processing of chemical reagents. There are many types of pollutants in the waste gas, and there are many toxic and harmful substances. Direct discharge will seriously pollute the environment and needs to be treated before discharge. The commonly used treatment method is to use a spray tower. The spray device in the spray tower is used to evenly spray the liquid medicine on the packing layer, so that the waste gas and the liquid medicine are fully in contact in the packing layer. The liquid medicine is used to adsorb, dissolve or react with the harmful substances in the waste gas to remove them.

[0003] When using existing chemical reagent waste gas spray treatment equipment, in order to increase the reaction rate between the liquid medicine and harmful substances in the waste gas, the internal environment of the spray tower is usually heated and maintained within a certain temperature range. However, due to the large overall surface area of ​​the spray tower and the lack of good insulation measures, there is a large amount of unnecessary heat loss. Summary of the invention

[0004] The purpose of the present invention is to provide a chemical reagent waste gas spraying treatment device which has good thermal insulation effect and can significantly reduce unnecessary heat loss.

[0005] The present invention adopts the following technical solutions: A chemical reagent waste gas spray treatment device comprises a spray tower, the spray tower comprises a tower body, an exhaust end is fixedly connected at the center of the bottom side wall of the tower body, an air inlet end penetrating the exhaust end is fixedly connected inside the exhaust end, an inner shell is fixedly connected to the outer surface of the air inlet end, the inner shell divides the internal space of the tower body into a spray chamber located inside the inner shell and a heat preservation chamber located between the inner shell and the tower body, a liquid storage tank connected to the heat preservation chamber is fixedly connected to the outer surface of the tower body, a liquid storage tank is fixedly connected to a liquid delivery pipe, a spray layer and a packing layer are fixedly installed in the spray chamber from top to bottom, the spray layer comprises a spray device, a liquid inlet pipe is fixedly connected to the spray device, one end of the liquid inlet pipe passes through the tower body and is fixedly connected to the liquid delivery pipe, and a waste gas rapid transport device for promoting the rapid entry of air in the spray chamber into the heat preservation chamber is fixedly installed on the tower body.

[0006] Preferably, the exhaust gas rapid conveying device includes a driving motor, a first gear is fixedly connected to the output end of the driving motor, a mounting plate is fixedly connected between the driving motor and the tower body, a mounting hole is opened at the center of the upper surface of the tower body, a limiting sleeve is rotatably connected in the mounting hole, the limiting sleeve is rotatably connected to the outer surface of the liquid inlet pipe, a first centripetal impeller is fixedly installed on the side surface of the limiting sleeve close to the spray chamber, and a second gear meshing with the first gear is fixedly connected to the limiting sleeve.

[0007] Preferably, a droplet scraping device is rotatably connected in the insulation chamber, and the droplet scraping device includes two scrapers, and the two scrapers are symmetrically rotatably connected in the insulation chamber, a connecting duct is fixedly connected to the bottom end of the scraper, an exhaust pipe is fixedly connected to the connecting duct, and a limiting swivel ring rotatably connected to the exhaust end is fixedly connected between the two exhaust pipes, an adapter hole is opened in the scraper, a rotating shaft is rotatably connected in the adapter hole, a third gear is fixedly connected to one end of the rotating shaft extending out of the adapter hole, an outer gear ring meshing with the third gear is fixedly connected to the first centrifugal impeller, and an inner gear ring meshing with the third gear is fixedly connected to an inner surface of the insulation chamber.

[0008] Preferably, a reprocessing device is installed between the scraper, the connecting duct and the exhaust pipe, the reprocessing device includes a plurality of through holes opened near the bottom of the inner shell body, an empty groove is opened on the bottom end of the inner shell body, an exhaust gas guide groove connecting the adapter hole and the connecting duct is opened in the scraper, an air inlet hole connected to the exhaust gas guide groove is opened on the outer surface of the scraper, a second centripetal impeller is fixedly installed on the rotating shaft, the second centripetal impeller is rotatably connected in the exhaust gas guide groove, the exhaust pipe is connected to the connecting duct, and an exhaust hole is opened on the exhaust pipe.

[0009] Preferably, a wear reduction component is installed on the scraper, and the wear reduction component includes two resistance reducing grooves. The two resistance reducing grooves are respectively opened on one side surface of the scraper and the tower body being slidably connected and on one side surface of the scraper and the inner shell being slidably connected. The two resistance reducing grooves are both connected to the exhaust gas guide groove, and two spiral blades symmetrical about the second centripetal impeller are fixedly connected to the rotating shaft.

[0010] Preferably, the upper end surface of the exhaust pipe is a plane, the lower surface of the exhaust pipe consists of a curved surface and an inclined surface, and the exhaust hole is opened on the inclined surface of the lower surface of the exhaust pipe.

[0011] Preferably, the exhaust end includes an exhaust pipe, which is fixedly connected to the center of the bottom end of the tower body, and a plurality of connecting ports are symmetrically opened on the outer surface of the exhaust pipe, and a pressure relief valve is installed in each of the plurality of connecting ports. The intake end includes an intake pipe, and a diverter hood is fixedly connected to the top of the intake pipe, and the diverter hood is conical as a whole, and a plurality of diverter holes penetrating the diverter hood are opened on the conical surface of the diverter hood, and the inclination angle of the diverter holes is slightly smaller than the inclination angle of the conical surface. The intake pipe is fixedly connected in the exhaust pipe, and a spiral guide plate is fixedly connected between the inner surface of the exhaust pipe and the outer surface of the intake pipe, a first pipeline is fixedly installed on the bottom end of the exhaust pipe, and a second pipeline is fixedly installed on the bottom end of the intake pipe, and the inner shell is fixedly connected to the outer surface of the intake pipe, and the connecting port is located in the empty groove.

[0012] A method for treating chemical reagent waste gas spraying treatment equipment, comprising the following steps: S1. When treating the waste gas generated in the production process of chemical reagents, the waste gas is introduced into the air inlet end from the second pipeline, and the liquid liquid for treating the waste gas is pumped from the liquid storage tank through the liquid delivery pipe and the liquid inlet pipe into the spray device. The spray device sprays the liquid liquid evenly into the spray chamber. The waste gas in the air inlet end enters the spray chamber through the diverter hole on the diverter cover. The waste gas contacts the sprayed liquid in the packing layer, and the toxic and harmful substances in the waste gas are treated by adsorption, dissolution or reaction. After passing through the packing layer, the liquid medicine falls on the diverter cover, flows along the surface of the diverter cover, contacts with the waste gas entering the spray chamber through the diverter hole on the diverter cover, and performs preliminary treatment on it. The liquid medicine finally gathers at the bottom of the spray chamber and the bottom of the insulation chamber, and the waste gas after spraying rises to the top of the spray chamber; S2, start the driving motor, the output end of the driving motor drives the first gear to rotate, the first gear drives the limit sleeve and the first centrifugal impeller to rotate around the axis of the mounting hole through the meshing connection with the second gear, the rotating first centrifugal impeller quickly delivers the treated exhaust gas at the top of the spray chamber into the insulation chamber, when the first centrifugal impeller rotates, the outer gear ring rotates with the first centrifugal impeller, driven by the outer gear ring, the third gear and the rotating shaft rotate around the axis of the mounting hole and also around the axis of the rotating shaft, driven by the rotating shaft, the scraper slides in the insulation chamber, scrapes off the liquid attached to the inner surface of the insulation chamber, and eliminates the influence on the thermal insulation effect of the insulation chamber; S3. When the shaft rotates around its own axis, the shaft drives the second centrifugal impeller to rotate, and the exhaust gas in the heat preservation chamber is sucked through the air inlet hole and sent into the exhaust gas guide groove, and then the exhaust gas is sent into the exhaust pipe in the medicine liquid at the bottom of the heat preservation chamber through the connecting conduit, and finally floats from the medicine liquid in the form of bubbles through the exhaust hole on the exhaust pipe and enters the through hole, thereby forming a space without medicine liquid in the through hole, and the exhaust gas gathers here, and enters the exhaust end through the pressure relief valve in the connecting port under the action of pressure, and finally is discharged from the spray tower through the first pipeline, and then discharged after drying and demisting. In the process of the exhaust gas floating from the medicine liquid in the form of bubbles, the exhaust gas that has been sprayed is reprocessed; S4. The rotating shaft drives the spiral blades to rotate. The spiral blades above the second centrifugal impeller transport the exhaust gas sucked from the outside by the second centrifugal impeller into the exhaust gas guide groove upward. At the same time, the spiral blades below the second centrifugal impeller transport the exhaust gas sucked from the outside by the second centrifugal impeller into the exhaust gas guide groove downward. The exhaust gas transported upward enters the two resistance reduction grooves through the exhaust gas guide grooves, so that the resistance reduction grooves have a certain air pressure and the pressure is higher than the air pressure in the insulation chamber. With the help of this air pressure, the interaction force between the two side surfaces of the scraper and the two inner surfaces of the insulation chamber can be reduced, thereby reducing the wear during the sliding process.

[0013] The beneficial effects of the present invention are: An inner shell is arranged inside the tower body, and the inner space of the tower body is divided into an inner spray chamber and an outer insulation chamber by means of the inner shell. The treated waste gas with residual heat is passed into the insulation chamber, so that the insulation chamber can be between the tower body and the inner shell, and the temperature difference between the outer side of the tower body and the inner side of the tower body can be reduced, thereby greatly reducing unnecessary heat loss caused by surface heat dissipation. Through heat transfer, the waste heat of the waste gas in the exhaust pipe can be used to preheat the waste gas newly introduced into the intake pipe, thereby realizing the recovery and reuse of the waste heat in the waste gas. By using the exhaust gas rapid conveying device to drive the liquid drop scraping device to operate, the scraper can slide in the heat preservation chamber, and the liquid attached to the inner surface of the heat preservation chamber can be scraped off during the sliding process, thereby solving the problem of affecting the heat insulation effect of the heat preservation chamber; With the help of the exhaust gas rapid conveying device to drive the droplet scraping device to operate, the exhaust gas in the insulation chamber is sucked and sent into the exhaust gas diversion groove, and then the exhaust gas is sent to the exhaust pipe in the medicine liquid at the bottom of the insulation chamber through the connecting pipe. Finally, the exhaust gas floats from the medicine liquid in the form of bubbles through the exhaust hole on the exhaust pipe and enters the empty groove, thereby forming a space without medicine liquid in the empty groove. The exhaust gas gathers here and enters the exhaust end through the pressure relief valve in the connecting port under the action of pressure. In the process of the exhaust gas floating from the medicine liquid in the form of bubbles, the exhaust gas that has been sprayed is reprocessed to ensure that the toxic and harmful substances in the exhaust gas are cleaned up.

[0014] When the shaft rotates, the shaft also drives the spiral blades to rotate. The spiral blades above the second centrifugal impeller transport the exhaust gas sucked from the outside into the exhaust gas guide groove by the second centrifugal impeller upward. Similarly, the spiral blades below the second centrifugal impeller transport the exhaust gas sucked from the outside into the exhaust gas guide groove by the second centrifugal impeller downward. The exhaust gas transported upward enters the two resistance reduction grooves through the exhaust gas guide grooves, so that the resistance reduction grooves have a certain air pressure and the pressure is higher than the air pressure in the insulation chamber. With the help of this air pressure, the interaction force between the two side surfaces of the scraper and the two inner surfaces of the insulation chamber can be reduced, thereby reducing the wear during the sliding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a chemical reagent waste gas spray treatment device proposed by the present invention; Figure 2 A cross-sectional view of a chemical reagent waste gas spray treatment device proposed by the present invention; Figure 3 for Figure 2 A magnified view of the structure in the middle; Figure 4 for Figure 2 A magnified view of the structure in middle B; Figure 5 A schematic diagram of the internal structure of a spray tower of a chemical reagent waste gas spray treatment device proposed by the present invention; Figure 6 A half-section view of the inner shell of a chemical reagent waste gas spray treatment device proposed by the present invention; Figure 7 This is a schematic diagram of the external structure of a tower body of a chemical reagent waste gas spray treatment device proposed by the present invention; Figure 8 This is a schematic diagram of the structure of the exhaust end of a chemical reagent waste gas spray treatment device proposed by the present invention; Fig. 9 This is a schematic diagram of the structure of the air inlet end of a chemical reagent waste gas spray treatment device proposed by the present invention; Fig.10 A partial structural schematic diagram of a waste gas rapid conveying device of a chemical reagent waste gas spraying treatment equipment proposed by the present invention; Fig.11 A schematic diagram of the structure of a spray device of a chemical reagent waste gas spray treatment equipment proposed by the present invention; Fig.12 A cross-sectional view of the internal structure of a droplet scraping device of a chemical reagent waste gas spray treatment device proposed by the present invention; Fig.13 A partial structural schematic diagram of a reprocessing device of a chemical reagent waste gas spraying treatment equipment proposed by the present invention; Fig.14 This is a schematic structural diagram of a droplet scraping device for a chemical reagent waste gas spray treatment device proposed by the present invention; Fig.15 A schematic diagram of a portion of the structure of a wear reduction component of a chemical reagent waste gas spray treatment device proposed by the present invention; Fig.16 This is a schematic structural diagram of a second centrifugal impeller of a chemical reagent waste gas spray treatment device proposed by the present invention.

[0016] In the figure: 1 spray tower, 11 tower body, 111 mounting hole, 12 exhaust end, 121 exhaust pipe, 1211 first pipeline, 122 connection port, 123 spiral guide plate, 13 air inlet end, 131 air inlet pipe, 1311 second pipeline, 132 splitter cover, 133 splitter hole, 14 inner shell, 141 through hole, 142 empty slot, 15 spray chamber, 151 spray device, 152 liquid inlet pipe, 16 insulation chamber, 17 liquid storage tank, 171 liquid delivery pipe, 2 exhaust gas fast transmission Delivery device, 21 driving motor, 22 first gear, 23 mounting plate, 24 limiting sleeve, 25 first centripetal impeller, 26 second gear, 3 droplet scraping device, 31 scraper, 311 adapter hole, 312 rotating shaft, 313 third gear, 314 outer gear ring, 315 inner gear ring, 316 exhaust gas guide groove, 3161 second centripetal impeller, 3162 spiral blade, 317 air inlet, 318 resistance reduction groove, 32 connecting duct, 33 exhaust pipe, 34 limiting adapter ring. DETAILED DESCRIPTION

[0017] See also Figure 1-Figure 16 A chemical reagent waste gas spraying treatment device includes a spray tower 1, which includes a tower body 11, an exhaust port 12 is fixedly connected to the center of the bottom side wall of the tower body 11, an air inlet port 13 penetrating the exhaust port 12 is fixedly connected to the exhaust port 12, an inner shell 14 is fixedly connected to the outer surface of the air inlet port 13, and the inner shell 14 divides the inner space of the tower body 11 into a spray chamber 15 located inside the inner shell 14 and a heat preservation chamber 16 located between the inner shell 14 and the tower body 11, and the outer surface of the tower body 11 is fixedly connected to the inner shell 14. A liquid storage tank 17 connected to the insulation chamber 16 is fixedly connected, and a liquid delivery pipe 171 is fixedly connected to the liquid storage tank 17. A spray layer and a packing layer are fixedly installed in the spray chamber 15 from top to bottom. The spray layer includes a spray device 151. A liquid inlet pipe 152 is fixedly connected to the spray device 151. One end of the liquid inlet pipe 152 passes through the tower body 11 and is fixedly connected to the liquid delivery pipe 171. An exhaust gas rapid transport device 2 for promoting the air in the spray chamber 15 to quickly enter the insulation chamber 16 is fixedly installed on the tower body 11.

[0018] The exhaust end 12 includes an exhaust pipe 121, which is fixedly connected to the center of the bottom end of the tower body 11. A plurality of connection ports 122 are symmetrically opened on the outer surface of the exhaust pipe 121, and a pressure relief valve is installed in each of the plurality of connection ports 122. The intake end 13 includes an intake pipe 131, and a flow divider 132 is fixedly connected to the top of the intake pipe 131. The flow divider 132 is in a conical shape as a whole, and a plurality of flow divider holes 133 penetrating the flow divider 132 are opened on the conical surface of the flow divider 132. The flow divider holes 133 are The inclination angle of 33 is slightly smaller than the inclination angle of the conical surface, the intake pipe 131 is fixedly connected to the exhaust pipe 121, a spiral guide plate 123 is fixedly connected between the inner surface of the exhaust pipe 121 and the outer surface of the intake pipe 131, a first pipeline 1211 is fixedly installed on the bottom end of the exhaust pipe 121, a second pipeline 1311 is fixedly installed on the bottom end of the intake pipe 131, the inner shell 14 is fixedly connected to the outer surface of the intake pipe 131, and the connecting port 122 is located in the empty groove 142.

[0019] When the existing chemical reagent waste gas spray treatment equipment is used, in order to increase the reaction rate of the harmful substances in the liquid medicine and the waste gas, the internal environment of the spray tower is usually heated and maintained within a certain temperature range. However, due to the large overall surface area of ​​the spray tower and the lack of good insulation measures, there is a large amount of unnecessary heat loss. In order to solve the above problems, the present invention sets an inner shell 14 inside the tower body 11, and uses the inner shell 14 to divide the internal space of the tower body 11 into an inner spray chamber 15 and an outer insulation chamber 16. When treating the waste gas generated in the chemical reagent production process, the waste gas is introduced into the air inlet end 13 from the second pipeline 1311, and then enters the spray chamber 15 from the top of the air inlet end 13. The waste gas is treated with The liquid medicine, under the action of the water pump on the liquid storage tank 17, enters the spray device 151 from the liquid storage tank 17 through the liquid delivery pipe 171 and the liquid inlet pipe 152, and is then evenly sprayed into the spray chamber 15 by the spray device 151. The sprayed liquid medicine falls into the packing layer, and contacts with the exhaust gas entering the spray chamber 15 in the packing layer, and absorbs and treats the harmful substances in the exhaust gas. After passing through the packing layer, the liquid medicine gathers at the bottom of the spray chamber 15, and the treated exhaust gas enters the inner shell 14 from the top of the spray chamber 15. Then, the pressure relief valve in the connecting port 122 is opened under the action of pressure, and the exhaust gas enters the exhaust end 12 from the connecting port 122, and is finally discharged from the spray tower 1 through the first pipeline 1211, and then discharged after drying and demisting. In the above process, since the treated exhaust gas still carries a large amount of residual heat, the provision of the insulation chamber 16 and the introduction of the treated exhaust gas with residual heat into the insulation chamber 16 enable the insulation chamber 16 to reduce the temperature difference between the outside of the tower body 11 and the inside of the tower body 11 between the tower body 11 and the inner shell 14. The reduction in temperature difference will affect the efficiency of surface heat dissipation, thereby greatly reducing unnecessary heat loss caused by surface heat dissipation. Moreover, after the exhaust gas with residual heat in the insulation chamber 16 enters the exhaust end 12 from the connecting port 122, since the intake pipe 131 is fixedly connected to the exhaust pipe 121, the newly introduced exhaust gas in the intake pipe 131 can be preheated by means of the residual heat of the exhaust gas in the exhaust pipe 121 through heat transfer, thereby realizing the recovery and reuse of the residual heat in the exhaust gas.

[0020] The sprayed medicine liquid will fall onto the diverter hood 132 after passing through the packing layer and flow along the surface of the diverter hood 132. Since the diverter hood 132 is generally conical in shape, a plurality of diverter holes 133 penetrating the diverter hood 132 are provided on the conical surface of the diverter hood 132. The inclination angle of the diverter holes 133 is slightly smaller than the inclination angle of the conical surface. The medicine liquid will not enter the air inlet end 13 through the diverter holes 133. In the process that the exhaust gas in the air inlet pipe 131 enters the spray chamber 15 through the diverter holes 133 on the diverter hood 132, the medicine liquid flowing along the surface of the diverter hood 132 will contact with the exhaust gas and perform preliminary treatment on it.

[0021] like Figure 2 , Figure 3 , Figure 5 , Figure 7 and Fig.10 As shown, the exhaust gas rapid conveying device 2 includes a driving motor 21, a first gear 22 is fixedly connected to the output end of the driving motor 21, a mounting plate 23 is fixedly connected between the driving motor 21 and the tower body 11, a mounting hole 111 is opened at the center of the upper surface of the tower body 11, a limiting sleeve 24 is rotatably connected in the mounting hole 111, the limiting sleeve 24 is rotatably connected to the outer surface of the liquid inlet pipe 152, a first centripetal impeller 25 is fixedly installed on the side surface of the limiting sleeve 24 close to the spray chamber 15, and a second gear 26 meshing with the first gear 22 is fixedly connected to the limiting sleeve 24.

[0022] Start the drive motor 21, and the output end of the drive motor 21 drives the first gear 22 to rotate. The first gear 22 drives the limit sleeve 24 and the first centrifugal impeller 25 to rotate around the axis of the mounting hole 111 through the meshing connection with the second gear 26. The treated exhaust gas at the top of the spray chamber 15 is quickly delivered to the insulation chamber 16 by utilizing the rotating first centrifugal impeller 25, and cooperates with the pressure relief valve in the connecting port 122 to increase and maintain the air pressure in the insulation chamber 16.

[0023] like Figure 2 , Figure 4 and Fig.14 As shown, a droplet scraping device 3 is rotatably connected in the heat preservation chamber 16, and the droplet scraping device 3 includes two scrapers 31, and the two scrapers 31 are symmetrically rotatably connected in the heat preservation chamber 16, a connecting conduit 32 is fixedly connected to the bottom end of the scraper 31, an exhaust pipe 33 is fixedly connected to the connecting conduit 32, a limiting swivel 34 rotatably connected to the exhaust end 12 is fixedly connected between the two exhaust pipes 33, a transfer hole 311 is opened in the scraper 31, a rotating shaft 312 is rotatably connected in the transfer hole 311, a third gear 313 is fixedly connected to one end of the rotating shaft 312 extending out of the transfer hole 311, an outer gear ring 314 meshing with the third gear 313 is fixedly connected to the first centripetal impeller 25, and an inner gear ring 315 meshing with the third gear 313 is fixedly connected to an inner surface of the heat preservation chamber 16.

[0024] When the first centrifugal impeller 25 rotates, the outer gear ring 314 rotates with the first centrifugal impeller 25. Since the third gear 313 is meshed with the inner gear ring 315 and the outer gear ring 314 at the same time, the third gear 313 and the rotating shaft 312 rotate around the axis of the mounting hole 111 and also rotate around the axis of the rotating shaft 312 under the drive of the outer gear ring 314. Since the scraper 31 is limitedly slidably connected between the two inner side surfaces of the heat preservation chamber 16, the scraper 31 slides in the heat preservation chamber 16 under the drive of the rotating shaft 312. The advantage of such a configuration is that, on the side surface of the insulation chamber 16 close to the tower body 11, the water vapor contained in the exhaust gas with residual heat will inevitably be cooled and liquefied, and adhere to the inner surface of the insulation chamber 16. Since the thermal conductivity of water is higher than that of the exhaust gas, this phenomenon will affect the thermal insulation effect of the insulation chamber 16. The scraper 31 sliding in the insulation chamber 16 can scrape off the liquid attached to the inner surface of the insulation chamber 16 during the sliding process, thereby solving the impact on the thermal insulation effect of the insulation chamber 16.

[0025] like Fig.12 and Fig.13 As shown, a reprocessing device is installed between the scraper 31, the connecting duct 32 and the exhaust pipe 33, and the reprocessing device includes a plurality of through holes 141 opened near the bottom of the inner shell 14, and an empty groove 142 is opened on the bottom end of the inner shell 14. An exhaust gas guide groove 316 connecting the adapter hole 311 and the connecting duct 32 is opened in the scraper 31, and an air inlet hole 317 connected to the exhaust gas guide groove 316 is opened on the outer surface of the scraper 31. A second centripetal impeller 3161 is fixedly installed on the rotating shaft 312, and the second centripetal impeller 3161 is rotatably connected in the exhaust gas guide groove 316. The exhaust pipe 33 is connected to the connecting duct 32, and an exhaust hole is opened on the exhaust pipe 33. The upper end surface of the exhaust pipe 33 is a plane, and the lower surface of the exhaust pipe 33 consists of a curved surface and an inclined surface, and the exhaust hole is opened on the inclined surface of the lower surface of the exhaust pipe 33.

[0026] With the help of the through hole 141, the medicine liquid in the spray chamber 15 enters the bottom of the heat preservation chamber 16. Under the action of the exhaust gas rapid conveying device 2, the air pressure in the heat preservation chamber 16 is higher than that in the spray chamber 15. Under the action of the pressure difference, the liquid level of the medicine in the heat preservation chamber 16 is lower than the liquid level of the medicine in the spray chamber 15, and the liquid level of the medicine in the heat preservation chamber 16 is lower than the height of the top of the through hole 141. Under the obstruction of the medicine liquid in the heat preservation chamber 16, the exhaust gas in the heat preservation chamber 16 cannot directly enter the connecting port 122 through the medicine liquid. When the rotating shaft 312 rotates around its own axis, the rotating shaft 312 drives the second centrifugal impeller 3161 to rotate. With the help of the rotating second centrifugal impeller 3161, the exhaust gas in the heat preservation chamber 16 is sucked and sent into the exhaust gas guide groove 316 in cooperation with the air inlet 317, and then the exhaust gas is sent to the exhaust pipe 33 in the medicine liquid at the bottom of the heat preservation chamber 16 through the connecting conduit 32, and finally the exhaust gas is discharged through the exhaust hole on the exhaust pipe 33. The exhaust gas gathers here and enters the exhaust port 12 through the pressure relief valve in the connection port 122 under the action of pressure. In the process of the exhaust gas floating up from the liquid medicine in the form of bubbles, the exhaust gas that has been sprayed is reprocessed to ensure that the toxic and harmful substances in the exhaust gas are cleaned up. Since the scraper 31 will slide in the insulation chamber 16, the lower surface of the exhaust pipe 33 can be set as a combination of a curved surface and an inclined surface, so that in the process of the scraper 31 sliding around the axis of the mounting hole 111 in the insulation chamber 16, the curved surface side faces the sliding direction. When the liquid medicine flows through the curved surface side and the inclined surface on the lower side of the exhaust pipe 33, the curved surface side can reduce the hydraulic pressure by accelerating the flow rate of the liquid medicine, so that the exhaust gas in the exhaust pipe 33 can be more conveniently overflowed from the exhaust hole.

[0027] like Fig.15 and Fig.16 As shown, a wear reducing component is installed on the scraper 31, and the wear reducing component includes two resistance reducing grooves 318. The two resistance reducing grooves 318 are respectively opened on the side surface of the scraper 31 slidingly connected to the tower body 11 and the side surface of the scraper 31 slidingly connected to the inner shell 14. The two resistance reducing grooves 318 are both connected to the exhaust gas guide groove 316, and two spiral blades 3162 symmetrical about the second centrifugal impeller 3161 are fixedly connected to the rotating shaft 312.

[0028] When the rotating shaft 312 rotates, the rotating shaft 312 also drives the spiral blades 3162 to rotate. The spiral blades 3162 located above the second centrifugal impeller 3161 transport the exhaust gas sucked from the outside into the exhaust gas guide groove 316 by the second centrifugal impeller 3161 upward. Similarly, the spiral blades 3162 located below the second centrifugal impeller 3161 transport the exhaust gas sucked from the outside into the exhaust gas guide groove 316 by the second centrifugal impeller 3161 downward. The exhaust gas transported upward enters the two resistance reducing grooves 318 through the exhaust gas guide groove 316, so that the resistance reducing grooves 318 have a certain air pressure and the pressure is higher than the air pressure in the insulation chamber 16. With the help of this air pressure, the interaction force between the two side surfaces of the scraper 31 and the two inner surfaces of the insulation chamber 16 can be reduced, thereby reducing the wear during the sliding process.

[0029] A method for treating chemical reagent waste gas spraying treatment equipment, comprising the following steps: S1. When treating the waste gas generated in the production process of chemical reagents, the waste gas is introduced into the air inlet end 13 from the second pipeline 1311, and the liquid used for treating the waste gas is pumped from the liquid storage tank 17 through the liquid delivery pipe 171 and the liquid inlet pipe 152 into the spray device 151. The spray device 151 sprays the liquid into the spray chamber 15 evenly. The waste gas in the air inlet end 13 enters the spray chamber 15 through the diverter hole 133 on the diverter cover 132, and enters the packing layer. The waste gas contacts with the sprayed liquid medicine, and the toxic and harmful substances in the waste gas are treated by adsorption, dissolution or reaction. After passing through the packing layer, the liquid medicine falls on the diverter cover 132, flows along the surface of the diverter cover 132, contacts with the waste gas entering the spray chamber 15 through the diverter hole 133 on the diverter cover 132, and performs preliminary treatment on the waste gas. The liquid medicine finally gathers at the bottom of the spray chamber 15 and the bottom of the insulation chamber 16, and the waste gas after spray treatment rises to the top of the spray chamber 15; S2, start the driving motor 21, the output end of the driving motor 21 drives the first gear 22 to rotate, the first gear 22 drives the limiting sleeve 24 and the first centrifugal impeller 25 to rotate around the axis of the mounting hole 111 through the meshing connection with the second gear 26, the rotating first centrifugal impeller 25 quickly delivers the treated exhaust gas at the top of the spray chamber 15 into the insulation chamber 16, when the first centrifugal impeller 25 rotates, the outer gear ring 314 rotates with the first centrifugal impeller 25, driven by the outer gear ring 314, the third gear 313 and the rotating shaft 312 rotate around the axis of the mounting hole 111 and also rotate around the axis of the rotating shaft 312, driven by the rotating shaft 312, the scraper 31 slides in the insulation chamber 16, scrapes off the liquid attached to the inner surface of the insulation chamber 16, and eliminates the influence on the heat insulation effect of the insulation chamber 16; S3. When the rotating shaft 312 rotates around its own axis, the rotating shaft 312 drives the second centrifugal impeller 3161 to rotate, and the exhaust gas in the heat preservation chamber 16 is sucked through the air inlet 317 and sent into the exhaust gas guide groove 316, and then the exhaust gas is sent into the exhaust pipe 33 in the medicine liquid at the bottom of the heat preservation chamber 16 through the connecting conduit 32, and finally floats from the medicine liquid in the form of bubbles through the exhaust hole on the exhaust pipe 33 and enters the empty groove 142, so that a space without medicine liquid is formed in the empty groove 142, and the exhaust gas gathers here, and enters the exhaust end 12 through the pressure relief valve in the connecting port 122 under the action of pressure, and finally is discharged from the spray tower 1 through the first pipeline 1211, and then discharged after drying and demisting. In the process of the exhaust gas floating from the medicine liquid in the form of bubbles, the exhaust gas that has been sprayed is reprocessed; S4. The rotating shaft 312 drives the spiral blade 3162 to rotate. The spiral blade 3162 located above the second centrifugal impeller 3161 transports the exhaust gas sucked from the outside by the second centrifugal impeller 3161 into the exhaust gas guide groove 316 upward. At the same time, the spiral blade 3162 located below the second centrifugal impeller 3161 transports the exhaust gas sucked from the outside by the second centrifugal impeller 3161 into the exhaust gas guide groove 316 downward. The exhaust gas transported upward enters the two resistance reducing grooves 318 through the exhaust gas guide groove 316, so that there is a certain air pressure in the resistance reducing groove 318 and the pressure is higher than the air pressure in the insulation chamber 16. With the help of this air pressure, the interaction force between the two side surfaces of the scraper 31 and the two inner surfaces of the insulation chamber 16 can be reduced, thereby reducing the wear during the sliding process.

[0030] In the present invention, when treating the waste gas generated in the production process of chemical reagents, the waste gas is introduced into the air inlet end 13 from the second pipeline 1311, and the liquid used for treating the waste gas is pumped from the liquid storage tank 17 through the liquid delivery pipe 171 and the liquid inlet pipe 152 into the spray device 151, and the spray device 151 sprays the liquid into the spray chamber 15 uniformly, and the waste gas in the air inlet end 13 enters the spray chamber 15 through the diverter hole 133 on the diverter cover 132, and the waste gas in the packing layer The internal waste gas contacts with the sprayed liquid medicine, and the toxic and harmful substances in the waste gas are treated by adsorption, dissolution or reaction. After passing through the packing layer, the liquid medicine falls on the diverter cover 132, flows along the surface of the diverter cover 132, contacts with the waste gas entering the spray chamber 15 through the diverter hole 133 on the diverter cover 132, and performs preliminary treatment on it. The liquid medicine finally gathers at the bottom of the spray chamber 15 and the bottom of the insulation chamber 16, and the waste gas after spray treatment rises to the top of the spray chamber 15; The drive motor 21 is started, and the output end of the drive motor 21 drives the first gear 22 to rotate. The first gear 22 drives the limit sleeve 24 and the first centrifugal impeller 25 to rotate around the axis of the mounting hole 111 through the meshing connection with the second gear 26. The rotating first centrifugal impeller 25 quickly delivers the treated exhaust gas at the top of the spray chamber 15 into the insulation chamber 16. When the first centrifugal impeller 25 rotates, the outer gear ring 314 rotates with the first centrifugal impeller 25. Driven by the outer gear ring 314, the third gear 313 and the rotating shaft 312 rotate around the axis of the mounting hole 111 and also rotate around the axis of the rotating shaft 312. Driven by the rotating shaft 312, the scraper 31 slides in the insulation chamber 16 to scrape off the liquid attached to the inner surface of the insulation chamber 16, thereby eliminating the influence on the heat insulation effect of the insulation chamber 16. When the rotating shaft 312 rotates around its own axis, the rotating shaft 312 drives the second centrifugal impeller 3161 to rotate, and the exhaust gas in the heat preservation chamber 16 is sucked through the air inlet 317 and sent into the exhaust gas guide groove 316, and then the exhaust gas is sent into the exhaust pipe 33 in the medicine liquid at the bottom of the heat preservation chamber 16 through the connecting conduit 32, and finally floats from the medicine liquid in the form of bubbles through the exhaust hole on the exhaust pipe 33 and enters the empty groove 142, so that a space without medicine liquid is formed in the empty groove 142, and the exhaust gas gathers here, and enters the exhaust end 12 through the pressure relief valve in the connecting port 122 under the action of pressure, and finally is discharged from the spray tower 1 through the first pipeline 1211, and then discharged after drying and demisting. In the process of the exhaust gas floating from the medicine liquid in the form of bubbles, the exhaust gas that has been sprayed is reprocessed; The rotating shaft 312 drives the spiral blade 3162 to rotate. The spiral blade 3162 located above the second centrifugal impeller 3161 transports the exhaust gas sucked from the outside into the exhaust gas guide groove 316 by the second centrifugal impeller 3161 upward. At the same time, the spiral blade 3162 located below the second centrifugal impeller 3161 transports the exhaust gas sucked from the outside into the exhaust gas guide groove 316 by the second centrifugal impeller 3161 downward. The exhaust gas transported upward enters the two resistance reduction grooves 318 through the exhaust gas guide groove 316, so that the resistance reduction groove 318 has a certain air pressure and the pressure is higher than the air pressure in the insulation chamber 16. With the help of this air pressure, the interaction force between the two side surfaces of the scraper 31 and the two inner surfaces of the insulation chamber 16 can be reduced, thereby reducing the wear during the sliding process.

Claims

1. A chemical reagent waste gas spray treatment device, comprising a spray tower (1), characterized in that: The spray tower (1) comprises a tower body (11), an exhaust end (12) is fixedly connected at the center of the bottom side wall of the tower body (11), an air inlet end (13) penetrating the exhaust end (12) is fixedly connected inside the exhaust end (12), an inner shell (14) is fixedly connected to the outer surface of the air inlet end (13), the inner shell (14) divides the internal space of the tower body (11) into a spray chamber (15) located inside the inner shell (14) and a heat preservation chamber (16) located between the inner shell (14) and the tower body (11), and the outer surface of the tower body (11) is fixedly connected to the heat preservation chamber. (16) is connected to a liquid storage tank (17), a liquid delivery pipe (171) is fixedly connected to the liquid storage tank (17), a spray layer and a packing layer are fixedly installed in the spray chamber (15) from top to bottom, the spray layer comprises a spray device (151), a liquid inlet pipe (152) is fixedly connected to the spray device (151), one end of the liquid inlet pipe (152) passes through the tower body (11) and is fixedly connected to the liquid delivery pipe (171), and an exhaust gas rapid transport device (2) for promoting the rapid entry of air in the spray chamber (15) into the heat preservation chamber (16) is fixedly installed on the tower body (11).

2. A chemical reagent waste gas spray treatment equipment according to claim 1, characterized in that: The exhaust gas rapid conveying device (2) comprises a drive motor (21), a first gear (22) is fixedly connected to the output end of the drive motor (21), a mounting plate (23) is fixedly connected between the drive motor (21) and the tower body (11), a mounting hole (111) is opened at the center of the upper surface of the tower body (11), a limit sleeve (24) is rotationally connected in a limited position in the mounting hole (111), the limit sleeve (24) is rotationally connected to the outer surface of the liquid inlet pipe (152), a first centripetal impeller (25) is fixedly installed on the side surface of the limit sleeve (24) close to the spray chamber (15), and a second gear (26) meshingly connected to the first gear (22) is fixedly connected to the limit sleeve (24).

3. A chemical reagent waste gas spray treatment equipment according to claim 2, characterized in that: A liquid drop scraping device (3) is rotatably connected in the heat preservation chamber (16), and the liquid drop scraping device (3) comprises two scrapers (31), the two scrapers (31) are symmetrically rotatably connected in the heat preservation chamber (16), a connecting conduit (32) is fixedly connected to the bottom end of the scraper (31), an exhaust pipe (33) is fixedly connected to the connecting conduit (32), a limiting swivel (34) rotatably connected to the exhaust end (12) is fixedly connected between the two exhaust pipes (33), and the The scraper (31) has an adapter hole (311) formed therein, a rotating shaft (312) rotatably connected therein, a third gear (313) fixedly connected to one end of the rotating shaft (312) extending out of the adapter hole (311), an outer gear ring (314) meshingly connected to the third gear (313) fixedly connected to the first centrifugal impeller (25), and an inner gear ring (315) meshingly connected to the third gear (313) fixedly connected to an inner surface of the heat preservation chamber (16).

4. A chemical reagent waste gas spray treatment equipment according to claim 3, characterized in that: A reprocessing device is installed between the scraper (31), the connecting duct (32) and the exhaust pipe (33), the reprocessing device comprising a plurality of through holes (141) opened near the bottom of the inner shell (14), a hollow groove (142) opened on the bottom end of the inner shell (14), an exhaust gas guide groove (316) connecting the adapter hole (311) and the connecting duct (32) opened in the scraper (31), an air inlet hole (317) connected to the exhaust gas guide groove (316) opened on the outer surface of the scraper (31), a second radial impeller (3161) is fixedly installed on the rotating shaft (312), the second radial impeller (3161) is rotatably connected in the exhaust gas guide groove (316), the exhaust pipe (33) is connected to the connecting duct (32), and an exhaust hole is opened on the exhaust pipe (33).

5. The chemical reagent waste gas spraying treatment equipment according to claim 4 is characterized in that: The scraper (31) is provided with a wear reduction component, the wear reduction component comprising two resistance reduction grooves (318), the two resistance reduction grooves (318) being respectively opened on a side surface where the scraper (31) is slidably connected to the tower body (11) and a side surface where the scraper (31) is slidably connected to the inner shell (14), the two resistance reduction grooves (318) being both connected to the exhaust gas guide groove (316), and two spiral blades (3162) symmetrical about the second centripetal impeller (3161) being fixedly connected to the rotating shaft (312).

6. The chemical reagent waste gas spraying treatment equipment according to claim 4 is characterized in that: The upper end surface of the exhaust pipe (33) is a plane, the lower surface of the exhaust pipe (33) is composed of a curved surface and an inclined surface, and the exhaust hole is opened on the inclined surface of the lower surface of the exhaust pipe (33).

7. The chemical reagent waste gas spraying treatment equipment according to claim 4 is characterized in that: The exhaust end (12) comprises an exhaust pipe (121), the exhaust pipe (121) being fixedly connected to the center of the bottom end of the tower body (11), a plurality of connection ports (122) being symmetrically opened on the outer surface of the exhaust pipe (121), and a pressure relief valve being installed in each of the plurality of connection ports (122). The intake end (13) comprises an intake pipe (131), a flow divider (132) being fixedly connected to the top end of the intake pipe (131), the flow divider (132) being in a conical shape as a whole, and a plurality of flow divider holes (133) penetrating the flow divider (132) being opened on the conical surface of the flow divider (132). The inclination angle of the flow splitting hole (133) is slightly smaller than the inclination angle of the conical surface; the intake pipe (131) is fixedly connected to the exhaust pipe (121); a spiral guide plate (123) is fixedly connected between the inner surface of the exhaust pipe (121) and the outer surface of the intake pipe (131); a first pipeline (1211) is fixedly installed on the bottom end of the exhaust pipe (121); a second pipeline (1311) is fixedly installed on the bottom end of the intake pipe (131); the inner shell (14) is fixedly connected to the outer surface of the intake pipe (131); and the connection port (122) is located in the empty groove (142).

8. A treatment method based on the chemical reagent waste gas spray treatment equipment according to claim 7, characterized in that: The following steps are involved: S1. When treating waste gas generated in the production process of chemical reagents, the waste gas is introduced into the air inlet end (13) through the second pipeline (1311), and a water pump on the liquid storage tank (17) is used to pump a liquid for treating the waste gas from the liquid storage tank (17) through a liquid delivery pipe (171) and a liquid inlet pipe (152) into a spray device (151). The spray device (151) sprays the liquid uniformly into the spray chamber (15), and the waste gas in the air inlet end (13) enters the spray chamber (15) through a diversion hole (133) on a diversion cover (132). In the packing layer, the waste gas contacts the sprayed liquid medicine, and the toxic and harmful substances in the waste gas are treated by adsorption, dissolution or reaction. After passing through the packing layer, the liquid medicine falls onto the diverter hood (132), flows along the surface of the diverter hood (132), contacts the waste gas entering the spray chamber (15) through the diverter hole (133) on the diverter hood (132), and performs preliminary treatment on the waste gas. The liquid medicine finally gathers at the bottom of the spray chamber (15) and the bottom of the heat preservation chamber (16), and the waste gas after the spray treatment rises to the top of the spray chamber (15); S2, starting the driving motor (21), the output end of the driving motor (21) drives the first gear (22) to rotate, the first gear (22) drives the limiting sleeve (24) and the first centrifugal impeller (25) to rotate around the axis of the mounting hole (111) through the meshing connection with the second gear (26), the rotating first centrifugal impeller (25) quickly delivers the treated exhaust gas at the top of the spray chamber (15) into the heat preservation chamber (16), and when the first centrifugal impeller (25) rotates, The outer gear ring (314) rotates together with the first centrifugal impeller (25). Driven by the outer gear ring (314), the third gear (313) and the rotating shaft (312) rotate around the axis of the mounting hole (111) and also around the axis of the rotating shaft (312). Driven by the rotating shaft (312), the scraper (31) slides in the heat preservation chamber (16) to scrape off the liquid attached to the inner surface of the heat preservation chamber (16), thereby eliminating the influence on the heat insulation effect of the heat preservation chamber (16). S3. When the rotating shaft (312) rotates around its own axis, the rotating shaft (312) drives the second centrifugal impeller (3161) to rotate, and the exhaust gas in the heat preservation chamber (16) is sucked through the air inlet hole (317) and sent to the exhaust gas guide groove (316), and then the exhaust gas is sent to the exhaust pipe (33) in the medicine liquid at the bottom of the heat preservation chamber (16) through the connecting pipe (32), and finally floats from the medicine liquid in the form of bubbles through the exhaust hole on the exhaust pipe (33) and enters the through hole (141), thereby forming a space without medicine liquid in the through hole (141), and the exhaust gas gathers here, and under the action of pressure, enters the exhaust end (12) through the pressure relief valve in the connecting port (122), and finally is discharged from the spray tower (1) through the first pipeline (1211), and then discharged after drying and demisting. In the process of the exhaust gas floating from the medicine liquid in the form of bubbles, the exhaust gas that has been sprayed is re-processed; S4. The rotating shaft (312) drives the spiral blade (3162) to rotate. The spiral blade (3162) located above the second centrifugal impeller (3161) transports the exhaust gas sucked from the outside by the second centrifugal impeller (3161) into the exhaust gas guide groove (316) upward. At the same time, the spiral blade (3162) located below the second centrifugal impeller (3161) transports the exhaust gas sucked from the outside by the second centrifugal impeller (3161) into the exhaust gas guide groove (316) downward. The exhaust gas transported upward enters the two resistance reduction grooves (318) through the exhaust gas guide groove (316), so that the resistance reduction groove (318) has a certain air pressure and the pressure is higher than the air pressure in the heat preservation chamber (16). With the help of this air pressure, the interaction force between the two side surfaces of the scraper (31) and the two inner side surfaces of the heat preservation chamber (16) can be reduced, thereby reducing the wear during the sliding process.

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