A device for recovering and purifying chemical waste gas

Abstract

The application provides a chemical waste gas recovery and purification treatment equipment, and relates to the technical field of waste gas treatment. The equipment comprises a spray tower, the top of the spray tower is fixed with a spray plate, the bottom of the spray tower is provided with a shunt assembly, the shunt assembly comprises a bottom disc, the bottom disc is rotationally installed on the spray tower, the top of the bottom disc is equidistantly provided with four groups of air cylinders, the top of each air cylinder is provided with an upper plate, the bottom of each air cylinder of one group of air cylinders is provided with a drain opening in the bottom disc, and the top of each air cylinder of one group of air cylinders is provided with a notch in the upper plate. Compared with the prior art, the shunt assembly is used for intermittently colliding the waste gas with the neutralizing solution sprayed by the spray plate, the solution flows back to the inside of the air cylinder, the newly entered waste gas is preliminarily neutralized, the subsequent secondary neutralization treatment effect is improved, the utilization rate of the neutralizing solution is improved, the dry assembly is used for drying the discharged waste gas, and the effect of subsequent activated carbon adsorption is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, in particular to a chemical waste gas recovery and purification treatment equipment. BACKGROUND

[0002] The chemical waste gas polluted by solid waste refers to the toxic and harmful gas discharged by the chemical plant in the chemical production, wherein, according to the different pH values, these waste gases can be divided into acidic waste gas and alkaline waste gas, when the acidic waste gas is purified, the most commonly used way is to use the spray tower to spray the acidic waste gas, when spraying, the atomizing nozzle is used to spray the alkaline solution in the atomized state in the acidic waste gas, so as to neutralize the acidic waste gas, so that it reaches the emission standard, the common domestic indoor air purifier treats the waste gas by high-efficiency activated carbon, which belongs to the advanced environmental protection industry.

[0003] It is found that the spray tower type treatment equipment in actual use has the problems that, since the space in the spray tower is large, the atomizing nozzle is difficult to consider all positions, and dead corners are prone to occur, at the same time, after the acidic waste gas is introduced into the spray tower, it will fill every corner in the tower, which leads to that part of the acidic waste gas will pass through the dead corners and cannot be neutralized and purified by the alkaline solution, so that the treatment of the acidic waste gas is not complete, which still harms the air environment, and due to the influence of air flow speed and spraying speed, part of the neutralization solution is directly sent out, and the utilization is not sufficient, after the waste gas is sprayed, the gas contains water, when the humid gas is treated by the subsequent activated adsorption, the water molecules and the organic pollutant molecules will compete for the adsorption sites on the surface of the activated carbon, when the humidity of the waste gas is high, a large number of water molecules occupy the adsorption sites, which leads to that the adsorption capacity of the organic pollutants is greatly reduced, and the treatment effect of the chemical waste gas is affected. SUMMARY

[0004] In view of the problems in the prior art, the present application aims to provide a chemical waste gas recovery and purification treatment equipment to solve the problems in the background art, the present application has a novel structure, the waste gas is intermittently collided with the neutralization solution sprayed by the spray plate through the shunt assembly, the solution flows back to the inside of the air cylinder, and the newly entered waste gas is preliminarily neutralized and treated, so as to improve the effect of the subsequent secondary neutralization treatment, improve the utilization rate of the neutralization solution, and dry the discharged waste gas through the drying assembly, so as to ensure that the effect of the subsequent activated carbon adsorption is not affected.

[0005] In order to achieve the above object, the present application is realized by the following technical scheme: A chemical waste gas recovery purification treatment equipment, comprising a spray tower, the top of the spray tower is fixed with a spray plate, and the bottom of the spray tower is provided with a shunt component, the shunt component comprises a bottom disc, the bottom disc is rotatably installed on the spray tower, and the top of the bottom disc is provided with four groups of air cylinders at equal intervals, the top of the air cylinder is provided with an upper plate, the bottom of the air cylinder of one of the groups is provided with a drain opening in the bottom disc, the top of the air cylinder of one of the groups is provided with a notch in the upper plate, and the other side of the notch is fixed with a fan pipe, a fan is installed in the fan pipe through a spoke frame and a motor, the shaft center of the four groups of air cylinders is provided with an air inlet pipe, and the bottom of the air inlet pipe penetrates the spray tower laterally, the top of the spray tower is provided with a drying component, the drying component comprises a connecting disc, the connecting disc is fixed on the top of the spray tower, and a rotating disc is rotatably installed on the top surface of the connecting disc, four groups of adsorption cylinder sleeve assemblies are fixed on the top of the rotating disc at equal intervals, and each group of adsorption cylinder sleeve assemblies on the rotating disc is composed of two adsorption cylinders, the top and bottom of the adsorption cylinder are provided with a horizontal pipe, the horizontal pipe at the bottom of the adsorption cylinder is rotatably installed on the rotating disc, the top of the spray tower is fixed with an air outlet pipe corresponding to the position of the bottom of one of the horizontal pipes, the air outlet pipe is fixedly connected with the connecting disc, the four groups of horizontal pipes are alternately connected with the air outlet pipe, and one side of the spray tower is provided with an activated carbon adsorption tower.

[0006] Further, the bottom side of the activated carbon adsorption tower is provided with a discharge pipe, the top of the spray plate is fixed with a liquid delivery pipe, the liquid delivery pipe penetrates the connecting disc and the rotating disc and is fixed with a concentration layer, one side of the concentration layer is fixed with a conveying pipe, and the conveying pipe is fixedly connected with the top of the activated carbon adsorption tower.

[0007] Further, the shunt component further comprises a vertical rod, the outer edge of the upper plate is fixed with a vertical rod at equal intervals, and the bottom of the vertical rod is fixedly connected with the bottom disc, the air cylinder and the air inlet pipe are fixedly connected through a connecting piece, and the spray tower is provided with a recovery layer at the bottom of the bottom disc, and the spray tower is provided with a water outlet pipe corresponding to the position of the recovery layer outside.

[0008] Further, the bottom of the bottom disc is fixed with an inner tooth ring, one side of the inner tooth ring is engaged with a second gear, the second gear is rotatably installed on the bottom of the bottom disc through a bearing, the bottom inner wall of the recovery layer is fixed with a motor corresponding to the position of the second gear, and the output end of the motor is fixedly connected with the second gear.

[0009] Further, the upper end surface of the upper plate is provided with a cambered surface, the upper plate is fixed with a baffle plate corresponding to the top of the remaining two groups of air cylinders, the fan pipe, the baffle plate and the notch are arranged clockwise on the surface of the upper plate.

[0010] Further, the side of the air cylinder towards the air inlet pipe is fixedly provided with a connecting pipe, the top of the air inlet pipe is rotatably provided with a sealing ring, and the top of the sealing ring is fixedly provided with a fixed column, the fixed column is fixedly connected with the upper plate, and the side of the sealing ring is provided with a communication port.

[0011] Further, the drying assembly further comprises an outer ring, the top and bottom of the adsorption cylinder are provided with outer rings, the outer ring at the bottom of the adsorption cylinder is fixedly connected with the rotating disc, vertical plates are fixedly arranged between the two outer rings, and the bottom of the vertical plate is fixedly connected with the bottom disc.

[0012] Further, the top and bottom of the adsorption cylinder are fixedly provided with vertical pipes, the vertical pipes are fixedly connected with the horizontal pipes, and electromagnetic valves are arranged in the connecting ends of the vertical pipes and the horizontal pipes of the two groups of adsorption cylinders.

[0013] Further, the top of the adsorption cylinder is rotatably connected with the concentrating layer, the connecting ends of the horizontal pipes at the top and bottom of the adsorption cylinder are fixedly provided with connecting frames on the outer ring, and the connecting ends of the horizontal pipes are rotatably sleeved in the connecting frames.

[0014] Further, the connecting ends of the horizontal pipes are sleeved with first gears, the bottom of the concentrating layer is fixedly provided with an arc-shaped toothed plate on one side of the fan pipe, and the four groups of first gears are alternately meshed with the toothed plate.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The connecting frame is in the rotating process, the first gear on the connecting end of the horizontal pipe at the top of the adsorption cylinder is meshed with the arc-shaped toothed plate, the length of the toothed plate can just meet the rotation of the horizontal pipe by one hundred and eighty degrees, thereby replacing the positions of the two groups of adsorption cylinders, the adsorption cylinder that has just been used is used for regenerating the adsorbent and waiting, and the unused adsorption cylinder is prepared for the next adsorption of moisture in the waste gas, because the air cylinder is provided with four groups of corresponding adsorption cylinder sets, and each group has two adsorption cylinders that are alternately used, there is sufficient time for the regeneration of the adsorbent in the used adsorption cylinder, so that the continuous drying and dehumidification of the waste gas can be maintained.

[0017] 2. The present application sends the waste gas into the spray tower through the air inlet pipe, and then into the air cylinder through the communication port and the connecting pipe corresponding to the air cylinder, and before this, part of the neutralizing solution has been stored in the air cylinder, so that the waste gas and the neutralizing solution are preliminarily mixed in the sealed air cylinder, and the acidic or alkaline ions in the waste gas are neutralized, when the upper plate rotates with the bottom disc, the fixed column also drives the sealing ring to rotate, and the communication port alternately corresponds to the connecting pipes of the four groups of air cylinders, because the air cylinder keeps different positions through the fixed connection of the air inlet pipe, so the air inlet pipe alternately sends the gas into the four groups of air cylinders, and gives each group of air cylinder reaction time.

[0018] 3. The air cylinder of the present application is divided into four working modes. The bottom of the air cylinder opposite the fan pipe is sealed, at this time the internal exhaust gas is discharged by driving the fan to rotate by the motor, and the neutralizing solution sprayed by the spray plate is mixed again. The air cylinder at the bottom of the baffle on the clockwise side of the fan pipe corresponds to the drain port of the bottom plate, and this state is to send the completely reacted neutralizing solution to the recovery layer, and the water is discharged through the outlet pipe to recycle the neutralizing solution. The bottom of the air cylinder on the side of the gap of the upper plate is sealed, and in this state, most of the neutralizing solution flows into the air cylinder from the gap along the arc surface when the spray plate collides with the exhaust gas, and the neutralizing solution that is not completely used is recovered for use next time the exhaust gas is sent in. The air cylinder at the bottom of the last group of baffles is sealed at the top and bottom, but is connected to the air inlet pipe. The exhaust gas is sent in and preliminarily mixed with the pre-stored neutralizing solution in the interior, thereby improving the utilization efficiency of the neutralizing solution and the treatment effect of the acid-base ions in the exhaust gas.

[0019] 4. Compared with the prior art, the present application intermittently collides the exhaust gas with the neutralizing solution sprayed by the spray plate through the shunt assembly, the solution flows back to the interior of the air cylinder, and the newly entered exhaust gas is preliminarily neutralized to improve the subsequent secondary neutralization treatment effect and improve the utilization rate of the neutralizing solution. The exhaust gas is dried by the drying assembly to ensure that it does not affect the effect of subsequent activated carbon adsorption. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The present application is a whole structure schematic diagram of a chemical waste gas recovery and purification treatment equipment;

[0021] Figure 2 The present application is a schematic diagram of the connection of the activated carbon adsorption tower and the drying assembly of a chemical waste gas recovery and purification treatment equipment;

[0022] Figure 3 The present application is a schematic diagram of the internal structure of a spray tower of a chemical waste gas recovery and purification treatment equipment;

[0023] Figure 4 The present application is a schematic diagram of the bottom structure of a shunt assembly of a chemical waste gas recovery and purification treatment equipment;

[0024] Figure 5 The present application is a schematic diagram of the top structure of a shunt assembly of a chemical waste gas recovery and purification treatment equipment;

[0025] Figure 6 The present application is a schematic diagram of the connection of the air inlet pipe and the air cylinder of a chemical waste gas recovery and purification treatment equipment;

[0026] Figure 7 The present application is a schematic diagram of the structure of a drying assembly of a chemical waste gas recovery and purification treatment equipment;

[0027] Figure 8 It is a connecting disc and rotating disc connection schematic view of a chemical waste gas recovery and purification treatment equipment.

[0028] In the figure: 1, spray tower; 11, air inlet pipe; 12, water outlet pipe; 13, spray plate; 14, recovery layer; 15, air outlet pipe; 16, liquid feeding pipe; 2, drying assembly; 21, connecting disc; 22, rotating disc; 23, adsorption cylinder; 24, horizontal pipe; 25, vertical pipe; 26, outer ring; 27, vertical plate; 28, toothed plate; 29, first gear; 210, connecting frame; 3, activated carbon adsorption tower; 31, discharge pipe; 32, concentration layer; 33, conveying pipe; 4, flow dividing assembly; 41, bottom disc; 42, water outlet; 43, air cylinder; 44, upper plate; 45, vertical rod; 46, motor; 47, second gear; 48, inner toothed ring; 49, camber; 410, fan pipe; 411, fan; 412, baffle; 413, connecting pipe; 414, sealing ring; 415, fixing column; 416, communication port. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0030] Please refer to Figures 1 to 8The application provides a technical scheme: a chemical waste gas recovery and purification treatment equipment, which comprises a spray tower 1, the top of the spray tower 1 is fixed with a spray plate 13, and the bottom of the spray tower 1 is provided with a shunt component 4, the shunt component 4 comprises a bottom disc 41, the bottom disc 41 is rotatably installed on the spray tower 1, and the top of the bottom disc 41 is provided with four groups of air cylinders 43 at equal intervals, the top of the air cylinder 43 is provided with an upper plate 44, the bottom of the air cylinder 43 is provided with a drainage opening 42, the top of the air cylinder 43 is provided with a notch, and the upper plate 44 is fixed with a fan pipe 410 on the other side of the notch, the fan pipe 410 is internally provided with a fan 411 through a spoke frame and a motor, the shaft centers of the four groups of air cylinders 43 are provided with air inlet pipes 11, and the bottom of the air inlet pipe 11 penetrates through the spray tower 1, the top of the spray tower 1 is provided with a drying component 2, the drying component 2 comprises a connecting disc 21, the connecting disc 21 is fixed at the top of the spray tower 1, and a rotating disc 22 is rotatably installed on the top surface of the connecting disc 21, the top of the rotating disc 22 is fixed with four groups of adsorption cylinder 23 sets at equal intervals, and each group of adsorption cylinder 23 set on the rotating disc 22 is composed of two adsorption cylinders 23, the top and bottom of the adsorption cylinder 23 are provided with horizontal pipes 24, and the horizontal pipe 24 at the bottom of the adsorption cylinder 23 is rotatably installed on the rotating disc 22, the top of the spray tower 1 is fixed with an air outlet pipe 15 corresponding to the position of the bottom of one group of horizontal pipes 24, the air outlet pipe 15 is fixedly connected with the connecting disc 21, and the four groups of horizontal pipes 24 are alternately connected with the air outlet pipe 15, one side of the spray tower 1 is provided with an activated carbon adsorption tower 3, when the device is used, waste gas is sent into the bottom of the spray tower 1 through the air inlet pipe 11, the waste gas is intermittently sent into the four air cylinders 43 through the shunt component 4, the waste gas is mixed with the neutralizing solution sprayed by the spray plate 13 through one group of air cylinders 43, the air cylinder 43 collects the neutralizing solution that is not completely used, the waste gas is preliminarily neutralized, and the waste gas is further neutralized by the spray plate 13, so that the treatment effect of acid-base ions in the waste gas is improved, the waste of the neutralizing solution is avoided, the waste gas is sent out through the air outlet pipe 15, the waste gas is dried through the drying component 2, and finally the waste gas is sent into the activated carbon adsorption tower 3, and the organic matter in the waste gas is adsorbed.

[0031] In the embodiment, the bottom side of the activated carbon adsorption tower 3 is provided with a discharge pipe 31, the top of the spray plate 13 is fixed with a liquid feeding pipe 16, the liquid feeding pipe 16 penetrates through the connecting disc 21 and the rotating disc 22 and is fixed with a concentration layer 32, one side of the concentration layer 32 is fixed with a conveying pipe 33, the conveying pipe 33 is fixedly connected with the top of the activated carbon adsorption tower 3, the waste gas sent out by the drying component 2 is sent into the activated carbon adsorption tower 3 through the concentration layer 32 and the conveying pipe 33, a plurality of activated carbon adsorption plates are arranged in the activated carbon adsorption tower 3 and are used for adsorbing the organic matter in the waste gas, and finally the waste gas is discharged from the discharge pipe 31, the liquid feeding pipe 16 penetrates out of the shaft center of the concentration layer 32 and does not interfere with the rotation of the drying component 2.

[0032] The shunt assembly 4 also includes vertical rods 45, the outer edge of the upper plate 44 is equidistantly fixed with vertical rods 45, and the bottom of the vertical rods 45 is fixedly connected with the bottom disc 41, the air cylinder 43 is fixedly connected with the air inlet pipe 11 through a connecting piece, the spray tower 1 is provided with a recovery layer 14 at the bottom of the bottom disc 41, and a water outlet pipe 12 is arranged at the position of the recovery layer 14 outside the spray tower 1, the bottom of the bottom disc 41 is fixedly provided with an inner tooth ring 48, one side of the inner tooth ring 48 is engagedly connected with a second gear 47, the second gear 47 is rotatably installed at the bottom of the bottom disc 41 through a bearing, a motor 46 is fixedly arranged at the position of the second gear 47 on the inner wall at the bottom of the recovery layer 14, and the output end of the motor 46 is fixedly connected with the second gear 47, an arc surface 49 is arranged on the upper end surface of the upper plate 44, the upper plate 44 is fixedly provided with a baffle 412 at the position corresponding to the top of the other two groups of air cylinders 43, the fan pipe 410, the baffle 412 and the notch are arranged in a clockwise direction on the surface of the upper plate 44, the motor 46 drives the second gear 47 to rotate and engage with the inner tooth ring 48, the inner tooth ring 48 drives the bottom disc 41 and the upper plate 44 to rotate together, in this process, the drain port 42 of the bottom disc 41 is alternately corresponded with the bottom of the four groups of air cylinders 43, the fan pipe 410 and the baffle 412 of the upper plate 44 and the notch are replaced to be corresponded with the top of the four groups of air cylinders 43, so that the four groups of air cylinders 43 are divided into four working modes, the air cylinder 43 at the bottom of the fan pipe 410 is sealed, at this time, the motor drives the fan 411 to rotate to discharge the waste gas in the air cylinder 43, and the waste gas is mixed with the neutralizing solution sprayed by the spray plate 13, the air cylinder 43 at the bottom of the baffle 412 on the clockwise side of the fan pipe 410 is corresponded with the drain port 42 of the bottom disc 41, which is used to send the completely reacted neutralizing solution into the recovery layer 14, and the neutralizing solution is discharged through the water outlet pipe 12 for recycling, the air cylinder 43 at the bottom of the notch of the upper plate 44 is sealed, in this state, most of the neutralizing solution flows into the air cylinder 43 from the notch along the arc surface 49 when the spray plate 13 collides with the waste gas, the neutralizing solution that is not completely used is recovered for use next time, the air cylinder 43 at the bottom of the last baffle 412 is sealed at the upper and lower ends, but is communicated with the air inlet pipe 11, the waste gas is sent into the air cylinder 43 to preliminarily mix with the pre-stored neutralizing solution, so as to improve the utilization efficiency of the neutralizing solution and the treatment effect of the acid-base ions in the waste gas.

[0033] The air cylinder 43 is fixed with a connecting pipe 413 on the side facing the air inlet pipe 11, the top of the air inlet pipe 11 is rotatably installed with a sealing ring 414, the top of the sealing ring 414 is fixed with a fixed column 415, the fixed column 415 is fixedly connected with the upper plate 44, one side of the sealing ring 414 is provided with a communication port 416, the exhaust gas is sent into the inside of the spray tower 1 through the air inlet pipe 11, after the communication port 416 corresponds to the connecting pipe 413 of one air cylinder 43, the exhaust gas is sent into the inside of the air cylinder 43, before this, part of the neutralizing solution has been stored in the air cylinder 43, so that the exhaust gas and the neutralizing solution are preliminarily mixed in the sealed air cylinder 43, the acid or alkaline ions in the exhaust gas are neutralized, when the upper plate 44 rotates with the bottom disc 41, the fixed column 415 also drives the sealing ring 414 to rotate, the communication port 416 alternately corresponds to the connecting pipes 413 of the four groups of air cylinders 43, because the air cylinders 43 keep different positions through the fixed connection of the air inlet pipe 11, so the air inlet pipe 11 alternately sends the gas into the inside of the four groups of air cylinders 43, and gives the reaction time of each group of air cylinders 43.

[0034] The drying assembly 2 also includes an outer ring 26, the top and bottom of the adsorption cylinder 23 are provided with an outer ring 26, the outer ring 26 at the bottom of the adsorption cylinder 23 is fixedly connected with the rotating disc 22, the vertical plate 27 is fixed between the two outer rings 26, and the bottom of the vertical plate 27 is fixedly connected with the bottom disc 41. The top and bottom of the adsorption cylinder 23 are fixedly provided with a vertical pipe 25, and the vertical pipe 25 is fixedly communicated with the horizontal pipe 24. The inner part of the connection end of the vertical pipe 25 and the horizontal pipe 24 of the two groups of adsorption cylinders 23 is provided with an electromagnetic valve. The horizontal pipe 24 at the top of the adsorption cylinder 23 is rotationally connected with the concentration layer 32. The connection end of the horizontal pipe 24 at the top and bottom of the adsorption cylinder 23 is fixedly provided with a connecting frame 210, and the connection end of the horizontal pipe 24 is rotationally sleeved in the inner part of the connecting frame 210. The connection end surface of the horizontal pipe 24 is sleeved with a first gear 29. The bottom of the concentration layer 32 is fixedly provided with an arc-shaped toothed plate 28 on one side of the gas outlet pipe 15. Four groups of the first gears 29 are alternately and meshingly connected with the toothed plate 28. There are eight adsorption cylinders 23, two by two as a group corresponding to a gas cylinder 43. Through the connection of the connecting frame 210, the adsorption cylinder 23 is installed in the inner ring of the two outer rings 26, and the outer ring 26 is connected with the bottom disc 41 through the vertical plate 27 and can rotate with the bottom disc 41. When the gas cylinder 43 is replaced, the adsorption cylinder 23 will also rotate synchronously, driving the rotating disc 22 in the connecting disc 21 to rotate, and the connection end of the horizontal pipe 24 at the bottom of the adsorption cylinder 23 is alternately connected with the gas outlet pipe 15, so that the exhaust gas discharged from the spray tower 1 is sent into the adsorption cylinder 23 outside. The adsorption cylinder 23 can use the existing adsorption dryer. The moisture is removed through the moisture absorption and regeneration cycle of the adsorbent, such as activated alumina, silica gel, molecular sieve. After the adsorption cylinder 43 close to the outside side absorbs the moisture in the exhaust gas each time, the exhaust gas is sent into the concentration layer 32 through the horizontal pipe 24 at the top of the adsorption cylinder 23, and then the rotating disc 22 and the outer ring 26 continue to rotate. In the rotating process, the first gear 29 on the connection end of the horizontal pipe 24 at the top of the adsorption cylinder 23 will mesh with the arc-shaped toothed plate 28. The length of the toothed plate 28 can just meet the rotation of the horizontal pipe 24 by one hundred and eighty degrees, so as to replace the positions of the two groups of adsorption cylinders 23. The adsorption cylinder 23 just used is used for regenerating the adsorbent and waiting, and the unused adsorption cylinder 23 is prepared for the next adsorption of the moisture in the exhaust gas. The technical principle of the regeneration of the adsorbent in the adsorption cylinder 23 can use the existing technology: including two steps of heating and cooling: heating step: hot air is introduced into the saturated adsorption tower, and the high-temperature hot air makes the water in the adsorbent evaporate into water vapor; cooling step: the evaporated water vapor enters the condenser and condenses into liquid water after cooling and is discharged from the system. The hot air continues to flow through the adsorbent to restore its moisture absorption capacity. Because the gas cylinder 43 is provided with four groups, the corresponding adsorption cylinder 23 sleeve set is also provided with four groups, and each group has two adsorption cylinders 23 alternately used, so there is sufficient time for the regeneration of the adsorbent in the used adsorption cylinder 23, so as to maintain continuous exhaust gas drying and dehumidification.

[0035] When the device is used, the exhaust gas is sent into the inside of the spray tower 1 through the air inlet pipe 11, and after the communication port 416 corresponds to the connecting pipe 413 of one air cylinder 43, the exhaust gas is sent into the inside of the air cylinder 43, and before that, part of the neutralizing solution has been stored in the air cylinder 43, so that the exhaust gas and the neutralizing solution are preliminarily mixed in the sealed air cylinder 43, and the acidic or alkaline ions in the exhaust gas are neutralized. When the upper plate 44 rotates with the bottom disc 41, the fixed column 415 also drives the sealing ring 414 to rotate, and the communication port 416 alternately corresponds to the connecting pipes 413 of the four groups of air cylinders 43. Because the air cylinders 43 are fixedly connected through the air inlet pipe 11 and keep different positions, the air inlet pipe 11 alternately sends the gas into the inside of the four groups of air cylinders 43, and gives each group of air cylinders 43 reaction time. The motor 46 drives the second gear 47 to rotate and engage with the inner tooth ring 48, and the inner tooth ring 48 drives the bottom disc 41 and the upper plate 44 to rotate together. In the process, the drain port 42 of the bottom disc 41 alternately corresponds to the bottom of the four groups of air cylinders 43, and the fan pipe 410 and the baffle 412 of the upper plate 44 and the gap alternately correspond to the top of the four groups of air cylinders 43, so that the four groups of air cylinders 43 are divided into four working modes. The bottom of the air cylinder 43 opposite to the fan pipe 410 is sealed, and at this time, the inside of the air cylinder 43 is driven to rotate by the motor-driven fan 411, and the exhaust gas is discharged, and the neutralizing solution sprayed by the spray plate 13 is secondarily mixed. The air cylinder 43 at the bottom of the baffle 412 on the clockwise side of the fan pipe 410 corresponds to the drain port 42 of the bottom disc 41, and in this state, the completely reacted neutralizing solution is sent to the recycling layer 14 and discharged through the water outlet pipe 12 for recycling and reuse. The bottom of the air cylinder 43 on the gap side of the upper plate 44 is sealed, and in this state, when the spray plate 13 collides with the exhaust gas, most of the neutralizing solution flows into the inside of the air cylinder 43 from the gap along the arc surface 49, and the unused neutralizing solution is recycled for use next time. The air cylinder 43 at the bottom of the last baffle 412 is sealed at the upper and lower ends, but is communicated with the air inlet pipe 11. The exhaust gas is sent into the inside of the air cylinder 43 for preliminary mixing with the pre-stored neutralizing solution, so as to improve the utilization efficiency of the neutralizing solution and the treatment effect of the acidic or alkaline ions in the exhaust gas. The exhaust gas is sent out through the air outlet pipe 15, and the adsorption cylinder 23 is installed in the inner circle of the two outer rings 26 through the connection of the connecting frame 210, and the outer ring 26 is connected with the bottom disc 41 through the vertical plate 27 and can rotate with the bottom disc 41. When the air cylinder 43 is replaced, the adsorption cylinder 23 also rotates synchronously, drives the rotating disc 22 in the connecting disc 21 to rotate, and the connecting end of the horizontal pipe 24 at the bottom of the adsorption cylinder 23 alternately corresponds to the air outlet pipe 15, so that the exhaust gas discharged from the inside of the spray tower 1 is sent into the outside adsorption cylinder 23. In the rotating process of the connecting frame 210, the first gear 29 on the connecting end of the horizontal pipe 24 at the top of the adsorption cylinder 23 engages with the arc-shaped tooth plate 28. The length of the tooth plate 28 can meet the rotation of the horizontal pipe 24 by one hundred and eighty degrees, so as to replace the positions of the two groups of adsorption cylinders 23. The adsorption cylinder 23 used just now is used for regenerating the adsorbent, and the unused adsorption cylinder 23 is prepared for next time to adsorb the moisture in the exhaust gas.The exhaust gas sent out by the drying assembly 2 is sent into the interior of the activated carbon adsorption tower 3 by the collecting layer 32 and the conveying pipe 33, and a plurality of groups of activated carbon adsorption plates are arranged in the interior of the activated carbon adsorption tower 3 to adsorb and treat the harmful gas in the exhaust gas, and finally the exhaust gas is discharged from the exhaust pipe 31.

[0036] The above shows and describes the basic principles and main features of the present application and the advantages of the present application, and it is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application.

[0037] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A device for recovering and purifying chemical waste gas, comprising a spray tower (1), characterized in that: The top of the spray tower (1) is fixed with a spray plate (13), and the bottom of the spray tower (1) is provided with a shunt assembly (4), the shunt assembly (4) comprises a bottom disc (41), the bottom disc (41) is rotatably installed on the spray tower (1), and the top of the bottom disc (41) is provided with four groups of air cylinders (43) at equal intervals, the top of the air cylinder (43) is provided with an upper plate (44), the bottom disc (41) is provided with a drainage port (42) corresponding to one group of air cylinders (43), the upper plate (44) is provided with a notch corresponding to the top of one group of air cylinders (43), and the upper plate (44) is fixed with a fan pipe (410) on the other side of the notch, the fan pipe (410) is internally provided with a fan (411) through a spoke frame and a motor, the shaft centers of the four groups of air cylinders (43) are provided with air inlet pipes (11), and the bottom of the air inlet pipe (11) penetrates through the spray tower (1) transversely, the top of the spray tower (1) is provided with a drying assembly (2), the drying assembly (2) comprises a connecting disc (21), the connecting disc (21) is fixed on the top of the spray tower (1), and the top surface of the connecting disc (21) is rotatably provided with a rotating disc (22), the top of the rotating disc (22) is fixed with four groups of adsorption cylinder (23) sets at equal intervals, and each group of adsorption cylinder (23) set on the rotating disc (22) is composed of two adsorption cylinders (23), the top and bottom of the adsorption cylinder (23) are provided with horizontal pipes (24), and the horizontal pipe (24) at the bottom of the adsorption cylinder (23) is rotatably installed on the rotating disc (22), the top of the spray tower (1) is fixed with an air outlet pipe (15) corresponding to the position of the bottom of one group of horizontal pipes (24), the air outlet pipe (15) is fixedly connected with the connecting disc (21), and four groups of horizontal pipes (24) are alternately connected with the air outlet pipe (15), one side of the spray tower (1) is provided with an activated carbon adsorption tower (3).

2. The apparatus for recovering and purifying chemical waste gas according to claim 1, characterized in that: The bottom of the activated carbon adsorption tower (3) is provided with a discharge pipe (31) on one side, the top of the spray plate (13) is fixed with a liquid feeding pipe (16), the liquid feeding pipe (16) penetrates through the connecting disc (21) and the rotating disc (22) and is fixed with a concentration layer (32), one side of the concentration layer (32) is fixed with a conveying pipe (33), and the conveying pipe (33) is fixedly connected with the top of the activated carbon adsorption tower (3).

3. The apparatus for recovering and purifying chemical waste gas according to claim 1, characterized in that: The shunt assembly (4) further comprises a vertical rod (45), the outer edge of the upper plate (44) is fixed with a vertical rod (45) at equal intervals, and the bottom of the vertical rod (45) is fixedly connected with the bottom disc (41), the air cylinder (43) and the air inlet pipe (11) are fixedly connected through a connecting piece, and the bottom of the spray tower (1) is provided with a recovery layer (14), and the outer side of the spray tower (1) is provided with a water outlet pipe (12) corresponding to the position of the recovery layer (14).

4. The apparatus for recovering and purifying chemical waste gas according to claim 3, characterized in that: The bottom of the chassis (41) is fixed with an inner tooth ring (48), and one side of the inner tooth ring (48) is engaged with a second gear (47), which is rotatably installed on the bottom of the chassis (41) through a bearing, and the bottom inner wall of the recycling layer (14) is fixed with a motor (46) corresponding to the position of the second gear (47), and the output end of the motor (46) is fixedly connected with the second gear (47).

5. The apparatus for recovering and purifying chemical waste gas according to claim 4, characterized in that: The upper end surface of the upper plate (44) is provided with a camber (49), and the upper plate (44) is fixed with a baffle (412) corresponding to the position of the top of the remaining two groups of air cylinders (43), and the fan pipe (410), the baffle (412) and the notch are arranged in clockwise on the surface of the upper plate (44).

6. The apparatus for recovering and purifying chemical waste gas according to claim 5, characterized in that: The side of the air cylinder (43) facing the air inlet pipe (11) is fixed with a connecting pipe (413), the top of the air inlet pipe (11) is rotatably installed with a sealing ring (414), and the top of the sealing ring (414) is fixed with a fixed column (415), the fixed column (415) is fixedly connected with the upper plate (44), and the side of the sealing ring (414) is provided with a communication port (416).

7. The apparatus for recovering and purifying chemical waste gas according to claim 1, characterized in that: The drying assembly (2) further comprises an outer ring (26), the top and bottom of the adsorption cylinder (23) are provided with an outer ring (26), the outer ring (26) at the bottom of the adsorption cylinder (23) is fixedly connected with the rotating disc (22), the vertical plate (27) is fixed between the two outer rings (26), and the bottom of the vertical plate (27) is fixedly connected with the chassis (41).

8. The apparatus for recovering and purifying chemical waste gas according to claim 7, characterized in that: The top and bottom of the adsorption cylinder (23) are fixedly connected with a vertical pipe (25), and the vertical pipe (25) is fixedly communicated with the horizontal pipe (24), and the connection end of the vertical pipe (25) and the horizontal pipe (24) of the two groups of adsorption cylinders (23) is internally provided with an electromagnetic valve.

9. The apparatus for recovering and purifying chemical waste gas according to claim 8, characterized in that: The horizontal pipe (24) at the top of the adsorption cylinder (23) is rotatably connected with the concentration layer (32), the outer ring (26) is fixed with a connecting frame (210) corresponding to the connection end of the horizontal pipe (24) at the top and bottom of the adsorption cylinder (23), and the connection end of the horizontal pipe (24) is rotatably sleeved in the connecting frame (210).

10. The apparatus for recovering and purifying chemical waste gas according to claim 9, characterized in that: The connection end surface of the horizontal pipe (24) is sleeved with a first gear (29), the bottom of the concentration layer (32) is fixed with an arc-shaped toothed plate (28) on one side of the air outlet pipe (15), and four groups of first gears (29) are alternately engaged with the toothed plate (28).

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