Alkali liquor spraying system for waste gas treatment

Abstract

The invention relates to an alkali liquor spraying system for waste gas treatment, and relates to the technical field of waste gas purification treatment.The alkali liquor spraying system comprises a gas inlet assembly, a waste gas treatment tower, an exhaust assembly and a liquid supplementing assembly, the gas inlet assembly communicates with the waste gas treatment tower through a gas inlet pipe, and the waste gas treatment tower communicates with the liquid supplementing assembly through a liquid supplementing pipe; the upper end face of the waste gas treatment tower communicates with an exhaust assembly. The waste gas treatment tower comprises an outer tower body and a first tower layer. The waste gas treatment tower is divided into four layers, all the layers are separated through the ventilation plates and the supporting filter screens, alkali liquor sprayed to all the layers by the spray heads flows downwards through holes in the ventilation plates till the alkali liquor flows to the inner side of the liquid collecting box on the inner side of the first tower layer in the waste gas treatment tower, and a plurality of silicon carbide ceramic balls are placed on the ventilation plates; the alkali liquor sprayed onto the silicon carbide ceramic balls can be fully neutralized with the acidic waste gas entering the waste gas treatment tower, so that acidic substances in the acidic waste gas are absorbed.

Description

Technical Field

[0001] The present application relates to the technical field of waste gas purification and treatment, and in particular to an alkaline solution spraying system for waste gas treatment. Background Art

[0002] Waste gas purification mainly refers to the treatment of industrial waste gas such as dust particles, smoke and soot, odorous gases, and toxic and harmful gases generated in industrial sites. The alkaline solution spray device used for waste gas treatment is a common waste gas treatment equipment, which is mainly used to treat waste gas containing acidic substances. Its working principle is to neutralize the acidic substances in the waste gas through alkaline solutions (such as sodium hydroxide, calcium hydroxide, etc.), thereby reducing the content of harmful substances in the waste gas and protecting the atmospheric environment; The existing method for treating acidic waste gas is to introduce the acidic gas into the alkali liquid pool through a pipeline, and the waste gas after being "washed" in the alkali liquid pool is directly discharged. First, when the acidic waste gas is treated by the existing technology, the acid is easily directly introduced into the alkali liquid pool, and there is a situation that the acidic gas and the alkali liquid do not react fully, and then direct discharge will still pollute the environment. Secondly, when the acidic waste gas is treated by the existing technology, the alkalinity of the alkali liquid in the alkali liquid pool will weaken over time. At this time, the original alkali liquid needs to be discharged and then supplemented with new alkali liquid, which is a cumbersome operation. Summary of the invention

[0003] The purpose of this application is to provide an alkali solution spraying system for waste gas treatment.

[0004] The alkali solution spraying system for waste gas treatment provided in this application adopts the following technical solution: A lye spraying system for waste gas treatment, comprising an air intake assembly, a waste gas treatment tower, an exhaust assembly and a liquid replenishment assembly, wherein the air intake assembly is connected to the waste gas treatment tower through an air intake pipe, and the waste gas treatment tower is connected to the liquid replenishment assembly through a liquid replenishment pipe, and the upper end surface of the waste gas treatment tower is connected to the exhaust assembly, and the waste gas treatment tower comprises an outer tower body, a first tower layer, a second tower layer, a third tower layer, a fourth tower layer and an inner tower body, the inner cavity of the outer tower body is provided with an inner tower body, and the inner cavity of the inner tower body is provided with a first tower layer, a second tower layer, a third tower layer and a fourth tower layer, and the first tower layer, the second tower layer, the third tower layer and the fourth tower layer are arranged in sequence from bottom to top, and one side of the first tower layer, the second tower layer, the third tower layer and the fourth tower layer are all provided with an observation window, and the first tower layer comprises a liquid collecting box and an annular exhaust pipe The liquid collecting box is installed on the bottom end surface of the first tower layer, and an annular exhaust pipe is installed on the inner side of the liquid collecting box, the annular exhaust pipe is connected to a one-way valve through an air guide pipe, and the one-way valve is connected to the first connecting port through the air guide pipe, the second tower layer includes a ventilation plate and a supporting filter, the ventilation plate is installed in the inner cavity of the inner tower body, and a supporting filter is arranged above the ventilation plate, and a plurality of groups of silicon carbide ceramic balls are placed above the supporting filter, the ventilation plate is arranged in four groups, and the supporting filter is arranged in three groups, the bottom end surfaces of the ventilation plates installed above the inner cavities of the second tower layer, the third tower layer and the fourth tower layer are all installed with nozzles, the nozzles installed in the second tower layer, the third tower layer and the fourth tower layer are connected to the output end of the spray pump through the liquid guide pipe, and the input end of the spray pump is connected to the inner side of the liquid collecting box through the liquid guide pipe.

[0005] By adopting the above technical scheme, the waste gas treatment tower is divided into four layers, namely the first tower layer, the second tower layer, the third tower layer and the fourth tower layer, and each layer is separated by a ventilation plate and a supporting filter. The ventilation plate is provided with holes, and the alkali liquid sprayed to each layer by a nozzle flows downward through the holes on the ventilation plate until it flows to the inner side of the collecting box on the inner side of the first tower layer in the waste gas treatment tower. At the same time, since a plurality of silicon carbide ceramic balls are placed on each layer of the ventilation plate, the alkali liquid sprayed on the silicon carbide ceramic balls can fully react with the acidic waste gas entering the waste gas treatment tower to neutralize the acidic waste gas, thereby absorbing the acidic substances in the acidic waste gas.

[0006] The air intake assembly includes a first shell and a gas inlet pipe, a side end face of the first shell is provided with a gas inlet pipe, and a filter box is provided in the cross section of the gas inlet pipe, an end of the gas inlet pipe extending to the inner cavity of the first shell is provided with an air flow buffer chamber, and the inner cavity of the air flow buffer chamber is provided with a first fan through a supporting column, and an end of the air flow buffer chamber away from the gas inlet pipe is connected to the air intake pipe through an air guide pipe and a first air pump.

[0007] By adopting the above technical solution, the air intake component is connected to the acidic waste gas ventilation pipe through the gas inlet pipe installed on one side of the first shell, wherein the first fan is started, the first fan drives the waste gas into the airflow buffer chamber, and the first vacuum pump is started to transport the waste gas in the airflow buffer chamber to the air intake pipe, and at the same time, when the acidic waste gas enters the airflow buffer chamber, the particulate impurities are filtered through the filter box, and then the acidic waste gas is assisted by the air intake component to enter the waste gas treatment tower again.

[0008] The exhaust component includes a second shell and a first ultrafiltration membrane, the second shell is installed on the upper end surface of the exhaust gas treatment tower, and the inner cavity of the second shell is provided with the first ultrafiltration membrane, a filter grid plate is provided above the first ultrafiltration membrane, and a second fan is provided above the filter grid plate, second ultrafiltration membranes are provided on both sides above the second fan, and a second vacuum pump is provided above the second fan, and an exhaust port is provided at the output end of the second vacuum pump.

[0009] By adopting the above technical solution, the neutralized exhaust gas is discharged by using the exhaust component, wherein the second fan is started, and the second fan drives the neutralized exhaust gas to pass through the first ultrafiltration membrane and the filter grid plate, and after the neutralized exhaust gas passes through the second ultrafiltration membrane, the second vacuum pump is used to discharge the neutralized exhaust gas through the exhaust port.

[0010] The liquid replenishment component includes a liquid replenishment tank and an alkali liquid pump. The inner cavity of the liquid replenishment tank is equipped with an alkali liquid pump, and a driving motor is arranged above the alkali liquid pump. A connecting pipe is arranged at the output end of the alkali liquid pump. The side end face of the liquid replenishment tank is provided with a pure water replenishment pipe and an alkali liquid replenishment pipe. The inner cavity of the liquid replenishment tank is provided with a first liquid level sensor and a first pH value detector. The upper end face of the liquid replenishment tank is connected to a box cover through a rotating shaft, and the output end of the alkali liquid pump is connected to a discharge pipe through a liquid guide pipe.

[0011] By adopting the above technical scheme, alkali solution is supplemented through the liquid replenishing tank, pure water or alkali solution is supplemented into the inner cavity of the liquid replenishing tank through the pure water replenishing pipe and the alkali solution replenishing pipe, and the content and pH value of the solution in the inner cavity of the liquid replenishing tank are monitored and controlled in real time through the first liquid level sensor and the first pH value detector, and the solution in the inner cavity of the liquid replenishing tank is transported to the inner side of the liquid collecting tank through the drain pipe and the liquid replenishing pipe through the connecting pipe, the alkali solution pump and the driving motor, and the inner cavity of the liquid replenishing tank can be observed at any time using the box cover.

[0012] The inner cavity of the liquid collecting box is provided with a second liquid level sensor and a second pH value detector, the ventilation plate is arc-shaped, and a third pH value detector is provided on the bottom end surface of the ventilation plate, the side end surface of the liquid collecting box is provided with a drain port, and the liquid collecting box and the drain port form a connecting structure.

[0013] By adopting the above technical scheme, a second liquid level sensor and a second pH value detector are arranged in the inner cavity of the liquid collecting tank to detect the pH value of the solution in the inner cavity of the liquid collecting tank, and the ventilation plate is arc-shaped and has through holes to allow gas to pass through. A drain port is also provided to discharge waste liquid in time through the drain port, and a third pH value detector is provided on the bottom end surface of the ventilation plate to detect the pH value in the gas, thereby facilitating the neutralization of acidic waste gas.

[0014] The first tower layer, the second tower layer, the third tower layer and the fourth tower layer in the waste gas treatment tower form a communication structure through a ventilation plate and a supporting filter screen, and the nozzle forms a communication structure with the inner side of the liquid collecting tank through a liquid guide pipe and a spray pump.

[0015] By adopting the above technical scheme, the first tower layer, the second tower layer, the third tower layer and the fourth tower layer in the waste gas treatment tower form a connected structure through the ventilation plate and the supporting filter, and the acidic waste gas passes through the first tower layer, the ventilation plate, the supporting filter, the second tower layer, the ventilation plate, the supporting filter, the third tower layer, the ventilation plate, the supporting filter, the fourth tower layer and the ventilation plate in sequence, and when passing through the second tower layer, the third tower layer and the fourth tower layer, the acidic waste gas also passes through the gaps between several groups of silicon carbide ceramic balls, wherein the alkali solution is sprayed from the nozzle through the liquid guide tube and the spray pump, and falls on the surface of several groups of silicon carbide ceramic balls, thereby increasing the gas contact area, so as to facilitate the neutralization of the acidic waste gas, and the sprayed alkali solution finally falls on the inner side of the liquid collecting tank through the ventilation plate and the supporting filter, thereby facilitating the neutralization of the acidic waste gas and the recycling of the solution.

[0016] The gas inlet pipe is connected to the airflow buffer chamber through the filter box, the airflow buffer chamber is connected to the air intake pipe through the first air pump and the air guide pipe, and the air intake pipe is connected to the annular exhaust pipe through the first connecting port, the air guide pipe and the one-way valve.

[0017] By adopting the above technical scheme, the acidic waste gas is discharged from the annular exhaust pipe through the gas inlet pipe, the filter box, the air flow buffer chamber, the first air pump, the air duct, the air inlet pipe, the first connecting port, the air duct and the one-way valve, thereby facilitating the one-way transportation of the waste gas so that the acidic waste gas can be neutralized subsequently through the waste gas treatment tower.

[0018] The fourth tower layer forms a communication structure with the inner cavity of the second shell through the first ultrafiltration membrane, and the first ultrafiltration membrane forms a communication structure with the exhaust port through the filter grid plate, the second ultrafiltration membrane and the second vacuum pump.

[0019] By adopting the above technical solution, the neutralized exhaust gas is discharged through the first ultrafiltration membrane and the filter grid plate, and the exhaust gas is filtered, and then the exhaust gas is discharged from the exhaust port through the second ultrafiltration membrane, and finally the neutralized gas is discharged.

[0020] The pure water replenishment pipe and the alkali liquid replenishment pipe form a connecting structure with the inner cavity of the liquid replenishment tank. The inner cavity of the liquid replenishment tank forms a connecting structure with the inner side of the liquid collecting tank through the alkali liquid pump, the connecting pipe and the liquid guide pipe. The box cover forms a rotating structure rotating around the center of the rotating shaft with the liquid replenishment tank through the rotating shaft. The alkali liquid pump forms a connecting structure with the liquid replenishment pipe and the liquid guide pipe through the discharge pipe.

[0021] By adopting the above technical scheme, the solution is supplemented to the inner cavity of the liquid replenishment tank through the pure water replenishment pipe and the alkali liquid replenishment pipe, and the content and pH value of the solution are monitored in real time by the first liquid level sensor and the first pH value detector, and the alkali liquid pump and the drive motor are started at the same time, and the solution is transported to the drain pipe through the connecting pipe, and the drain pipe is connected with the liquid replenishment pipe and the liquid guide pipe to transport the corresponding alkali liquid, replenish the solution to the liquid collecting tank and connect it with the spray pump by using the liquid guide pipe to facilitate the neutralization reaction of the acidic waste gas, and at the same time, the box cover can be rotated by the rotating shaft to observe the internal changes of the liquid replenishment tank.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. A second liquid level sensor and a second pH value detector are arranged in the inner cavity of the liquid collecting tank to detect the pH value of the solution in the inner cavity of the liquid collecting tank, and the ventilation plate is arc-shaped and is also provided with a through hole to allow gas to pass through. A liquid discharge port is also provided to discharge the waste liquid in time by using the liquid discharge port, and a third pH value detector is arranged on the bottom end surface of the ventilation plate to detect the pH value in the gas to neutralize the acidic waste gas. The first tower layer, the second tower layer, the third tower layer and the fourth tower layer in the waste gas treatment tower form a connecting structure through the ventilation plate and the supporting filter screen, and the acidic waste gas passes through the first tower layer, the ventilation plate, the supporting filter screen, the second tower layer, the ventilation plate, the supporting filter screen, the third tower layer, the ventilation plate, the supporting filter screen, the fourth tower layer and the ventilation plate in sequence, and when passing through the second tower layer, the third tower layer and the fourth tower layer, the acidic waste gas also passes through the gaps between several groups of silicon carbide ceramic balls, and the alkali solution is discharged by the guide Liquid pipes and spray pumps are sprayed from the nozzles and fall on the surfaces of several groups of silicon carbide ceramic balls, thereby increasing the gas contact area and facilitating the neutralization of the acidic waste gas. The sprayed alkali solution finally falls on the inner side of the liquid collecting tank using the ventilation plate and the supporting filter screen, which is beneficial to the neutralization of the acidic waste gas and facilitates the recycling of the solution. The waste gas treatment tower is divided into four layers, namely the first tower layer, the second tower layer, the third tower layer and the fourth tower layer, and each layer is separated by the ventilation plate and the supporting filter screen. Holes are distributed on the ventilation plate, and the alkali solution sprayed to each layer by the nozzle flows downward using the holes on the ventilation plate until it flows to the inner side of the liquid collecting tank on the inner side of the first tower layer in the waste gas treatment tower. At the same time, since a plurality of silicon carbide ceramic balls are placed on each ventilation plate, the alkali solution sprayed on the silicon carbide ceramic balls can fully react with the acidic waste gas entering the waste gas treatment tower to absorb the acidic substances in the acidic waste gas. 2. The air intake assembly is connected to the acidic waste gas ventilation pipe by using the gas inlet pipe installed on one side of the first shell, and the first fan is started. The first fan drives the waste gas into the air flow buffer chamber, and the first air pump is started to transport the waste gas in the air flow buffer chamber to the air intake pipe. At the same time, when the acidic waste gas enters the air flow buffer chamber, the filter box is used to filter the particulate impurities, wherein the acidic waste gas passes through the gas inlet pipe, the filter box, the air flow buffer chamber, the first air pump, the air guide pipe, the air intake pipe, the first connecting port, the air guide pipe and the one-way valve and is discharged from the annular exhaust pipe, thereby transporting the waste gas in one direction, so that the waste gas treatment tower is used to neutralize the acidic waste gas later, and the air intake assembly is used to assist the acidic waste gas to enter the waste gas treatment tower; 3. The neutralized exhaust gas is discharged through the exhaust assembly, and the second fan is started. The second fan drives the neutralized exhaust gas to pass through the first ultrafiltration membrane and the filter grid plate. After the neutralized exhaust gas passes through the second ultrafiltration membrane, the second vacuum pump is used to discharge the neutralized exhaust gas through the exhaust port, wherein the neutralized exhaust gas is discharged by the first ultrafiltration membrane and the filter grid plate, and the exhaust gas is filtered, and then the exhaust gas is discharged from the exhaust port through the second ultrafiltration membrane, and finally the neutralized gas is discharged, and the alkali solution is supplemented by the liquid replenishment tank, and the pure water replenishment pipe and the alkali liquid replenishment pipe are used to replenish the pure water or alkali solution to the inner cavity of the liquid replenishment tank, and the first liquid level sensor and the first pH value detector are used to monitor and control the content and pH of the solution in the inner cavity of the liquid replenishment tank in real time. value, utilize the connecting pipe, alkali liquid pump and driving motor to transport the solution in the inner cavity of the liquid replenishment tank to the inner side of the liquid collecting tank through the discharge pipe and the liquid replenishment pipe, the inner cavity of the liquid replenishment tank can be observed at any time through the tank cover, the pure water replenishment pipe and the alkali liquid replenishment pipe are used to replenish the solution to the inner cavity of the liquid replenishment tank, the first liquid level sensor and the first pH value detector are used to monitor the content and pH value of the solution in real time, the alkali liquid pump and the driving motor are started, the solution is transported to the discharge pipe through the connecting pipe, and the discharge pipe is connected with the liquid replenishment pipe and the liquid guide pipe to transport the corresponding alkali liquid, the solution is replenished to the liquid collecting tank and the liquid guide pipe is connected with the spray pump to facilitate the neutralization reaction of the acidic waste gas, and the tank cover can be rotated by the rotating shaft to observe the internal changes of the liquid replenishment tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of an air intake assembly according to an embodiment of the present application; Figure 2 This is a schematic diagram of the three-dimensional structure of the waste gas treatment tower in the embodiment of the present application; Figure 3 is a schematic structural diagram of the waste gas treatment tower of the embodiment of the present application from a second perspective; Figure 4 This is a schematic structural diagram of the waste gas treatment tower from a third perspective of an embodiment of the present application; Figure 5 is a schematic cross-sectional structure diagram of an air intake assembly according to an embodiment of the present application; Figure 6is a schematic cross-sectional structure diagram of an exhaust assembly according to an embodiment of the present application; Description of reference numerals: 1. air intake assembly; 11. first shell; 12. gas inlet pipe; 13. filter box; 14. air flow buffer chamber; 15. support column; 16. first fan; 17. first air pump; 2. exhaust gas treatment tower; 21. outer tower body; 22. first tower layer; 23. second tower layer; 24. third tower layer; 25. fourth tower layer; 26. inner tower body; 27. observation window; 28. liquid collecting box; 29. ​​annular exhaust pipe; 210. one-way valve; 211. first connection port; 212. ventilation plate; 213. support filter; 214. silicon carbide ceramic Ceramic ball; 215, nozzle; 216, spray pump; 3, exhaust assembly; 31, second shell; 32, first ultrafiltration membrane; 33, filter grid plate; 34, second fan; 35, second ultrafiltration membrane; 36, second vacuum pump; 37, exhaust port; 4, liquid replenishment assembly; 41, liquid replenishment tank; 42, alkali solution pump; 43, drive motor; 44, connecting pipe; 45, pure water replenishment pipe; 46, alkali solution replenishment pipe; 47, first liquid level sensor; 48, first pH value detector; 49, box cover; 410, drain pipe; 5, air inlet pipe; 6, liquid replenishment pipe; 7, drain port. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 - Attachment Figure 6 , further details of this application are given.

[0025] Embodiment: An alkali solution spraying system for waste gas treatment comprises an air intake component 1, a waste gas treatment tower 2, an exhaust component 3 and a liquid replenishment component 4, the air intake component 1 is connected to the waste gas treatment tower 2 through an air intake pipe 5, and the waste gas treatment tower 2 is connected to the liquid replenishment component 4 through a liquid replenishment pipe 6, the upper end surface of the waste gas treatment tower 2 is connected to the exhaust component 3, the waste gas treatment tower 2 comprises an outer tower body 21, a first tower layer 22, a second tower layer 23, a third tower layer 24, a fourth tower layer 25 and an inner tower body 26, the inner cavity of the outer tower body 21 is provided with an inner tower body 26, and the inner cavity of the inner tower body 26 is provided with a first tower layer 22, a second tower layer 23, a third tower layer 24 and a fourth tower layer 25, The first tower layer 22, the second tower layer 23, the third tower layer 24 and the fourth tower layer 25 are arranged in sequence from bottom to top. An observation window 27 is provided on one side of the first tower layer 22, the second tower layer 23, the third tower layer 24 and the fourth tower layer 25. The first tower layer 22 includes a liquid collecting box 28 and an annular exhaust pipe 29. The liquid collecting box 28 is installed on the bottom end surface of the first tower layer 22, and an annular exhaust pipe 29 is installed on the inner side of the liquid collecting box 28. The annular exhaust pipe 29 is connected to a one-way valve 210 through an air guide pipe, and the one-way valve 210 is connected to a first connecting port 211 through an air guide pipe. The second tower layer 23 includes a vent plate 212 and a supporting filter screen 213. The vent plate 212 The exhaust gas treatment tower 2 is installed in the inner cavity of the inner tower body 26, and a support filter 213 is arranged above the ventilation plate 212, and a plurality of groups of silicon carbide ceramic balls 214 are placed above the support filter 213. Four groups of ventilation plates 212 are arranged, and three groups of support filters 213 are arranged. The bottom end surfaces of the ventilation plates 212 installed above the inner cavities of the second tower layer 23, the third tower layer 24 and the fourth tower layer 25 are all installed with nozzles 215. The nozzles 215 installed in the second tower layer 23, the third tower layer 24 and the fourth tower layer 25 are connected to the output end of the spray pump 216 through the liquid guide pipe, and the input end of the spray pump 216 is connected to the inner side of the liquid collecting tank 28 through the liquid guide pipe. The exhaust gas treatment tower 2 is divided into four layers. , which are the first tower layer 22, the second tower layer 23, the third tower layer 24 and the fourth tower layer 25, and each layer is separated by a ventilation plate 212 and a supporting filter 213. The ventilation plate 212 is provided with holes, and the alkali solution sprayed to each layer by the nozzle 215 flows downward through the holes on the ventilation plate 212 until it flows to the inner side of the collecting box 28 on the inner side of the first tower layer 22 in the exhaust gas treatment tower 2. At the same time, since a plurality of silicon carbide ceramic balls 214 are placed on each layer of the ventilation plate 212, the alkali solution sprayed on the silicon carbide ceramic balls 214 can fully react with the acidic exhaust gas entering the exhaust gas treatment tower 2 to fully neutralize the acidic exhaust gas, thereby absorbing the acidic substances in the acidic exhaust gas; The air intake assembly 1 includes a first shell 11 and a gas inlet pipe 12. The side end surface of the first shell 11 is provided with the gas inlet pipe 12, and the cross section of the gas inlet pipe 12 is provided with a filter box 13. The end of the gas inlet pipe 12 extending to the inner cavity of the first shell 11 is provided with an air flow buffer chamber 14, and the inner cavity of the air flow buffer chamber 14 is provided with a first fan 16 through a support column 15. The end of the air flow buffer chamber 14 away from the gas inlet pipe 12 is connected to the air intake pipe 5 through an air guide pipe and a first air pump 17. , wherein the air intake assembly 1 is connected to the acid waste gas ventilation pipe through the gas inlet pipe 12 installed on one side of the first shell 11, wherein the first fan 16 is started, the first fan 16 drives the waste gas into the air flow buffer chamber 14, and the first air pump 17 is started to transport the waste gas in the air flow buffer chamber 14 to the air intake pipe 5, and at the same time, when the acid waste gas enters the air flow buffer chamber 14, the particulate impurities are filtered through the filter box 13, and then the acid waste gas is assisted by the air intake assembly 1 to enter the waste gas treatment tower 2; The exhaust assembly 3 includes a second shell 31 and a first ultrafiltration membrane 32, the second shell 31 is installed on the upper end surface of the exhaust gas treatment tower 2, and the inner cavity of the second shell 31 is provided with the first ultrafiltration membrane 32, a filter grid plate 33 is provided above the first ultrafiltration membrane 32, and a second fan 34 is provided above the filter grid plate 33, second ultrafiltration membranes 35 are provided on both sides above the second fan 34, and a second air pump 36 is provided above the second fan 34, and an exhaust port 37 is provided at the output end of the second air pump 36, and the neutralized exhaust gas is discharged by using the exhaust assembly 3, wherein the second fan 34 is started, and the second fan 34 drives the neutralized exhaust gas to pass through the first ultrafiltration membrane 32 and the filter grid plate 33, and after the neutralized exhaust gas passes through the second ultrafiltration membrane 35, the second air pump 36 is used to discharge the neutralized exhaust gas through the exhaust port 37; The liquid replenishing assembly 4 includes a liquid replenishing tank 41 and an alkali liquid pump 42. The inner cavity of the liquid replenishing tank 41 is equipped with the alkali liquid pump 42, and a driving motor 43 is arranged above the alkali liquid pump 42. A connecting pipe 44 is arranged at the output end of the alkali liquid pump 42. A pure water replenishing pipe 45 and an alkali liquid replenishing pipe 46 are arranged at the side end surface of the liquid replenishing tank 41. A first liquid level sensor 47 and a first pH value detector 48 are arranged at the inner cavity of the liquid replenishing tank 41. The upper end surface of the liquid replenishing tank 41 is connected to a tank cover 49 through a rotating shaft. The output end of the alkali liquid pump 42 is connected to a drain pipe 410 through a liquid guide pipe. The alkali solution is supplemented through the liquid replenishing tank 41, and the pure water or alkali solution is supplemented into the inner cavity of the liquid replenishing tank 41 through the pure water replenishing pipe 45 and the alkali solution replenishing pipe 46, and the content and pH value of the solution in the inner cavity of the liquid replenishing tank 41 are monitored and controlled in real time through the first liquid level sensor 47 and the first pH value detector 48, and the solution in the inner cavity of the liquid replenishing tank 41 is transported to the inner side of the liquid collecting tank 28 through the drain pipe 410 and the liquid replenishing pipe 6 through the connecting pipe 44, the alkali solution pump 42 and the driving motor 43, and the inner cavity of the liquid replenishing tank 41 can be observed at all times by using the tank cover 49; The inner cavity of the liquid collecting box 28 is provided with a second liquid level sensor and a second pH value detector, the ventilation plate 212 is arc-shaped, and the bottom end surface of the ventilation plate 212 is provided with a third pH value detector, the side end surface of the liquid collecting box 28 is provided with a drain port 7, and the liquid collecting box 28 and the drain port 7 form a communicating structure, wherein the inner cavity of the liquid collecting box 28 is provided with a second liquid level sensor and a second pH value detector, so as to detect the pH value of the solution in the inner cavity of the liquid collecting box 28, and wherein the ventilation plate 212 is arc-shaped, and is also provided with a through hole for gas to pass through, and is provided with a drain port 7, so as to discharge the waste liquid in time through the drain port 7, and the bottom end surface of the ventilation plate 212 is provided with a third pH value detector, so as to detect the pH value in the gas, so as to facilitate the neutralization of the acidic waste gas; The first tower layer 22, the second tower layer 23, the third tower layer 24 and the fourth tower layer 25 in the waste gas treatment tower 2 form a communication structure through the ventilation plate 212 and the support filter 213, and the nozzle 215 forms a communication structure with the inner side of the liquid collecting box 28 through the liquid guide pipe and the spray pump 216, wherein the first tower layer 22, the second tower layer 23, the third tower layer 24 and the fourth tower layer 25 in the waste gas treatment tower 2 form a communication structure through the ventilation plate 212 and the support filter 213, and the acidic waste gas passes through the first tower layer 22, the ventilation plate 212, the support filter 213, the second tower layer 23, the ventilation plate 212, the support filter 213, the third tower layer 24, The vent plate 212, the support filter 213, the fourth tower layer 25, the vent plate 212, and when passing through the second tower layer 23, the third tower layer 24 and the fourth tower layer 25, the acidic waste gas also passes through the gaps between the groups of silicon carbide ceramic balls 214, wherein the alkali solution is sprayed from the nozzle 215 through the liquid guide tube and the spray pump 216, and falls on the surface of the groups of silicon carbide ceramic balls 214, thereby increasing the gas contact area, thereby facilitating the neutralization of the acidic waste gas, and the sprayed alkali solution passes through the vent plate 212 and the support filter 213 and finally falls on the inner side of the liquid collecting box 28, thereby facilitating the neutralization of the acidic waste gas and facilitating the recycling of the solution; The gas inlet pipe 12 forms a communication structure with the airflow buffer chamber 14 through the filter box 13, the airflow buffer chamber 14 forms a communication structure with the air intake pipe 5 through the first air pump 17 and the air guide pipe, and the air intake pipe 5 forms a communication structure with the annular exhaust pipe 29 through the first connecting port 211, the air guide pipe and the one-way valve 210, wherein the acidic waste gas is discharged from the annular exhaust pipe 29 through the gas inlet pipe 12, the filter box 13, the airflow buffer chamber 14, the first air pump 17, the air guide pipe, the air intake pipe 5, the first connecting port 211, the air guide pipe and the one-way valve 210, thereby facilitating the one-way transportation of the waste gas, so that the acidic waste gas can be neutralized through the waste gas treatment tower 2 later; The fourth tower layer 25 forms a communication structure with the inner cavity of the second shell 31 through the first ultrafiltration membrane 32, and the first ultrafiltration membrane 32 forms a communication structure with the exhaust port 37 through the filter grid plate 33, the second ultrafiltration membrane 35 and the second vacuum pump 36, wherein the neutralized exhaust gas is discharged through the first ultrafiltration membrane 32 and the filter grid plate 33, and the exhaust gas is filtered, and then the exhaust gas is discharged from the exhaust port 37 through the second ultrafiltration membrane 35, and then the neutralized gas is finally discharged, the pure water replenishment pipe 45 and the alkali liquid replenishment pipe 46 form a communication structure with the inner cavity of the liquid replenishment tank 41, and the inner cavity of the liquid replenishment tank 41 forms a communication structure with the inner side of the liquid collecting tank 28 through the alkali liquid pump 42, the connecting pipe 44 and the liquid guide pipe, and the box cover 49 forms a rotating structure around the center of the rotating shaft with the liquid replenishment tank 41 through the rotating shaft. A rotating structure, in which the alkali liquid pump 42 forms a connecting structure with the liquid replenishment pipe 6 and the liquid guide pipe through the discharge pipe 410, wherein the solution is replenished into the inner cavity of the liquid replenishment tank 41 through the pure water replenishment pipe 45 and the alkali liquid replenishment pipe 46, and the content and pH value of the solution are monitored in real time through the first liquid level sensor 47 and the first pH value detector 48, and the alkali liquid pump 42 and the drive motor 43 are started at the same time, and the solution is transported to the discharge pipe 410 through the connecting pipe 44, and the discharge pipe 410 is connected with the liquid replenishment pipe 6 and the liquid guide pipe to transport the corresponding alkali liquid, replenish the solution to the liquid collecting tank 28 and connect with the spray pump 216 through the liquid guide pipe to facilitate the neutralization reaction of the acidic waste gas, and at the same time, the box cover 49 can be rotated by the rotating shaft to observe the internal changes of the liquid replenishment tank 41.

[0026] The implementation principle of the embodiment of the present application is as follows: first, the air intake component 1 is connected to the acidic waste gas ventilation pipe through the gas inlet pipe 12 installed on one side of the first shell 11, wherein the first fan 16 is started, and the first fan 16 drives the waste gas into the air flow buffer chamber 14, and the first air pump 17 is started to transport the waste gas in the air flow buffer chamber 14 to the air intake pipe 5. At the same time, when the acidic waste gas enters the air flow buffer chamber 14, the particulate impurities are filtered through the filter box 13, wherein the acidic waste gas passes through the gas inlet pipe 12, the filter box 13, the air flow buffer chamber 14, the first air pump 17, the air guide pipe, the air intake pipe 5, the first connecting port 211, the air guide pipe and the one-way valve 210 and is discharged from the annular exhaust pipe 29, which is convenient for one-way transportation of the waste gas, and passes through the air intake component 1 The auxiliary acidic waste gas enters the waste gas treatment tower 2, and the waste gas treatment tower 2 is divided into four layers, namely the first tower layer 22, the second tower layer 23, the third tower layer 24 and the fourth tower layer 25, and each layer is separated by a ventilation plate 212 and a supporting filter 213. The ventilation plate 212 is provided with holes, and the alkali solution sprayed to each layer by the nozzle 215 flows downward through the holes on the ventilation plate 212 until it flows to the inner side of the collecting box 28 on the inner side of the first tower layer 22 in the waste gas treatment tower 2. At the same time, a plurality of silicon carbide ceramic balls 214 are placed on each layer of the ventilation plate 212. The alkali solution sprayed on the silicon carbide ceramic balls 214 can fully react with the acidic waste gas entering the waste gas treatment tower 2 to neutralize the acidic substances in the acidic waste gas. The acidic waste gas also passes through the gaps between the groups of silicon carbide ceramic balls 214, where the alkali solution is sprayed from the nozzle 215 through the liquid guide tube and the spray pump 216, and falls on the surface of the groups of silicon carbide ceramic balls 214, increasing the gas contact area, which is convenient for neutralizing the acidic waste gas, and the sprayed alkali solution finally falls on the inner side of the liquid collecting box 28 through the vent plate 212 and the supporting filter 213, and the inner cavity of the liquid collecting box 28 is provided with a second liquid level sensor and a second pH value detector to detect the pH value of the solution in the inner cavity of the liquid collecting box 28, and the vent plate 212 is arc-shaped, and is also provided with a through hole to facilitate the passage of gas, and is provided with a drain port 7 to discharge the waste liquid in time through the drain port 7, and the vent plate 212 is A third pH value detector is provided on the bottom end surface to detect the pH value in the gas, so as to facilitate the neutralization of the acidic waste gas, and the neutralized waste gas is discharged by using the exhaust component 3, wherein the second fan 34 is started, and the second fan 34 drives the neutralized waste gas to pass through the first ultrafiltration membrane 32 and the filter grid plate 33, and after the neutralized waste gas passes through the second ultrafiltration membrane 35, the second vacuum pump 36 is used to discharge the neutralized waste gas through the exhaust port 37, wherein the alkali solution is supplemented through the liquid replenishment tank 41, and the pure water or alkali solution is supplemented to the inner cavity of the liquid replenishment tank 41 through the pure water replenishment pipe 45 and the alkali solution replenishment pipe 46, and the content and pH value of the solution in the inner cavity of the liquid replenishment tank 41 are monitored and controlled in real time by the first liquid level sensor 47 and the first pH value detector 48,The solution in the inner cavity of the liquid replenishment tank 41 is transported to the inner side of the liquid collection tank 28 through the connecting pipe 44, the alkali liquid pump 42 and the driving motor 43 through the drain pipe 410 and the liquid replenishment pipe 6, and the inner cavity of the liquid replenishment tank 41 can be observed at all times by using the tank cover 49, wherein the solution is replenished to the inner cavity of the liquid replenishment tank 41 through the pure water replenishment pipe 45 and the alkali liquid replenishment pipe 46, and the content and pH value of the solution are monitored in real time by the first liquid level sensor 47 and the first pH value detector 48, and the alkali liquid pump 42 and the driving motor 43 are started at the same time, and the solution is transported to the drain pipe 410 through the connecting pipe 44, and the drain pipe 410 is connected with the liquid replenishment pipe 6 and the liquid guide pipe to transport the corresponding alkali liquid, replenish the solution to the liquid collection tank 28 and connect with the spray pump 216 by using the liquid guide pipe to neutralize the acid waste gas, and the tank cover 49 can be rotated by the rotating shaft to observe the internal changes of the liquid replenishment tank 41.

[0027] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An alkaline solution spraying system for waste gas treatment, comprising an air intake component (1), a waste gas treatment tower (2), an exhaust component (3) and a liquid replenishing component (4), characterized in that: The air intake assembly (1) is connected to the exhaust gas treatment tower (2) via an air intake pipe (5), and the exhaust gas treatment tower (2) is connected to the liquid replenishment assembly (4) via a liquid replenishment pipe (6). The upper end surface of the exhaust gas treatment tower (2) is connected to the exhaust assembly (3). The exhaust gas treatment tower (2) comprises an outer tower body (21), a first tower layer (22), a second tower layer (23), a third tower layer (24), a fourth tower layer (25) and an inner tower body (26). The inner cavity of the outer tower body (21) is provided with an inner tower body (26), and the inner cavity of the inner tower body (26) is provided with a first tower layer (22). A first tower layer (22), a second tower layer (23), a third tower layer (24) and a fourth tower layer (25), wherein the first tower layer (22), the second tower layer (23), the third tower layer (24) and the fourth tower layer (25) are arranged in sequence from bottom to top, an observation window (27) is provided on one side of the first tower layer (22), the second tower layer (23), the third tower layer (24) and the fourth tower layer (25), the first tower layer (22) comprises a liquid collecting box (28) and an annular exhaust pipe (29), and the liquid collecting box (28) is installed on the bottom end surface of the first tower layer (22), An annular exhaust pipe (29) is installed on the inner side of the liquid collecting box (28); the annular exhaust pipe (29) is connected to a one-way valve (210) via an air guide pipe, and the one-way valve (210) is connected to a first connection port (211) via an air guide pipe; the second tower layer (23) comprises a ventilation plate (212) and a support filter (213); the ventilation plate (212) is installed in the inner cavity of the inner tower body (26); a support filter (213) is arranged above the ventilation plate (212); and a plurality of groups of silicon carbide ceramic small The second tower layer (23), the third tower layer (24), and the fourth tower layer (25) are provided with a spray head (215) installed on the bottom end surface of the ventilation plate (212) installed above the inner cavity. The spray heads (215) installed in the second tower layer (23), the third tower layer (24), and the fourth tower layer (25) are connected to the output end of the spray pump (216) through a liquid guide tube, and the input end of the spray pump (216) is connected to the inner side of the liquid collecting tank (28) through the liquid guide tube.

2. The alkali solution spraying system for waste gas treatment according to claim 1, characterized in that: The air intake assembly (1) comprises a first shell (11) and a gas inlet pipe (12); a side end surface of the first shell (11) is provided with a gas inlet pipe (12), and a cross section of the gas inlet pipe (12) is provided with a filter box (13); an end of the gas inlet pipe (12) extending to the inner cavity of the first shell (11) is provided with an air flow buffer chamber (14), and the inner cavity of the air flow buffer chamber (14) is provided with a first fan (16) via a support column (15); an end of the air flow buffer chamber (14) away from the gas inlet pipe (12) is connected to the air intake pipe (5) via an air guide pipe and a first air pump (17).

3. The alkali solution spraying system for waste gas treatment according to claim 1, characterized in that: The exhaust assembly (3) comprises a second shell (31) and a first ultrafiltration membrane (32); the second shell (31) is mounted on the upper end surface of the exhaust gas treatment tower (2); the first ultrafiltration membrane (32) is arranged in the inner cavity of the second shell (31); a filter grid plate (33) is arranged above the first ultrafiltration membrane (32); a second fan (34) is arranged above the filter grid plate (33); second ultrafiltration membranes (35) are arranged on both sides above the second fan (34); a second air pump (36) is arranged above the second fan (34); and an exhaust port (37) is arranged at the output end of the second air pump (36).

4. The alkali solution spraying system for waste gas treatment according to claim 1, characterized in that: The liquid replenishment assembly (4) comprises a liquid replenishment tank (41) and an alkali liquid pump (42); the inner cavity of the liquid replenishment tank (41) is equipped with an alkali liquid pump (42); a driving motor (43) is arranged above the alkali liquid pump (42); a connecting pipe (44) is arranged at the output end of the alkali liquid pump (42); a pure water replenishment pipe (45) and an alkali liquid replenishment pipe (46) are arranged on the side end surface of the liquid replenishment tank (41); a first liquid level sensor (47) and a first pH value detector (48) are arranged in the inner cavity of the liquid replenishment tank (41); the upper end surface of the liquid replenishment tank (41) is connected to a tank cover (49) via a rotating shaft; and the output end of the alkali liquid pump (42) is connected to a liquid discharge pipe (410) via a liquid guide pipe.

5. The alkali solution spraying system for waste gas treatment according to claim 1, characterized in that: The inner cavity of the liquid collecting box (28) is provided with a second liquid level sensor and a second pH value detector; the ventilation plate (212) is arc-shaped, and a third pH value detector is provided on the bottom end surface of the ventilation plate (212); a liquid discharge port (7) is provided on the side end surface of the liquid collecting box (28), and the liquid collecting box (28) and the liquid discharge port (7) form a communication structure.

6. The alkaline solution spraying system for waste gas treatment according to claim 1, characterized in that: The first tower layer (22), the second tower layer (23), the third tower layer (24) and the fourth tower layer (25) in the waste gas treatment tower (2) form a communication structure through a ventilation plate (212) and a supporting filter screen (213), and the nozzle (215) forms a communication structure with the inner side of a liquid collecting tank (28) through a liquid guide pipe and a spray pump (216).

7. The alkaline solution spraying system for waste gas treatment according to claim 2, characterized in that: The gas inlet pipe (12) forms a communication structure with the airflow buffer chamber (14) via the filter box (13); the airflow buffer chamber (14) forms a communication structure with the air intake pipe (5) via the first air pump (17) and the air guide pipe; the air intake pipe (5) forms a communication structure with the annular exhaust pipe (29) via the first connecting port (211), the air guide pipe and the one-way valve (210).

8. The alkali solution spraying system for waste gas treatment according to claim 3 is characterized in that: The fourth tower layer (25) forms a communication structure with the inner cavity of the second shell (31) through the first ultrafiltration membrane (32), and the first ultrafiltration membrane (32) forms a communication structure with the exhaust port (37) through the filter grid plate (33), the second ultrafiltration membrane (35) and the second vacuum pump (36).

9. The alkaline solution spraying system for waste gas treatment according to claim 4, characterized in that: The pure water replenishment pipe (45) and the alkali liquid replenishment pipe (46) form a communication structure with the inner cavity of the liquid replenishment tank (41); the inner cavity of the liquid replenishment tank (41) forms a communication structure with the inner side of the liquid collecting tank (28) via the alkali liquid pump (42), the communication pipe (44) and the liquid guide pipe; the tank cover (49) forms a rotating structure rotating around the center of the rotating shaft with the liquid replenishment tank (41) via the rotating shaft; the alkali liquid pump (42) forms a communication structure with the liquid replenishment pipe (6) and the liquid guide pipe via the liquid discharge pipe (410).

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