Environment-friendly chemical waste gas absorption tower

Abstract

The present application relates to waste gas treatment technical field, disclose a kind of environmental protection type chemical waste gas absorption tower, including base, air intake mechanism, spraying mechanism and set of pollution mechanism;The top of the base is fixedly provided with main body, the main body is cylindrically arranged, the inside of the main body is fixedly provided with first filter layer and second filter layer, the first filter layer is parallelly arranged with the second filter layer, the first filter layer and the second filter layer are vertically arranged with the axis of the main body, the air intake mechanism is arranged in the outer lateral wall of the main body.The environmental protection type chemical waste gas absorption tower of the present application is provided with spraying mechanism, so that the treatment liquid in the liquid storage cylinder flows into the circulating cavity uniformly through the circulating hole of circulating cylinder side wall, then is sprayed out from the spiral nozzle at the connecting place of liquid storage cylinder and fixed tube in the opposite direction of waste gas spraying, so as to increase the contact area and reaction time of treatment liquid and waste gas sufficiently, effectively improve the reaction effect of treatment liquid and waste gas.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, and particularly relates to an environment-friendly chemical waste gas absorption tower. BACKGROUND

[0002] Chemical waste gas absorption is an important environmental protection technology for treating and reducing harmful waste gas generated in the chemical production process. Before starting any waste gas treatment, the composition, concentration, temperature and other parameters of the waste gas are first understood. This will help to select appropriate absorbents and treatment methods. According to the nature of the waste gas, one or more suitable absorbents are selected. Commonly used absorbents include water, lye, organic solvents, etc.

[0003] The existing waste gas absorption tower often uses a spraying method to absorb and treat waste gas, but the treatment liquid is difficult to fully react with the waste gas in the absorption tower, which affects the waste gas treatment effect, and the sewage and solid impurities generated in the waste gas treatment process are difficult to collect and treat, and if directly discharged to the outside, the environment is easily polluted. Therefore, an environment-friendly chemical waste gas absorption tower is proposed. SUMMARY

[0004] The present application solves the technical problem that the existing waste gas absorption tower often uses a spraying method to absorb and treat waste gas, but the treatment liquid is difficult to fully react with the waste gas in the absorption tower, which affects the waste gas treatment effect, and the sewage and solid impurities generated in the waste gas treatment process are difficult to collect and treat, and if directly discharged to the outside, the environment is easily polluted, and provides an environment-friendly chemical waste gas absorption tower.

[0005] The technical solution adopted by the present application to solve the technical problem is:

[0006] An environment-friendly chemical waste gas absorption tower, comprising a base, a gas inlet mechanism, a spraying mechanism and a sewage collecting mechanism.

[0007] The top of the base is fixedly provided with a main body, which is provided in a cylindrical shape, the inside of the main body is fixedly provided with a first filter layer and a second filter layer, the first filter layer and the second filter layer are provided in parallel, the first filter layer and the second filter layer are both provided perpendicularly to the axis of the main body, the air inlet mechanism is provided on the outer side wall of the main body, the spray mechanism is connected with the output pipeline of the air inlet mechanism, the spray mechanism is provided on the top of the first filter layer, the dirt collecting mechanism is provided between the first filter layer and the second filter layer, the left side wall of the bottom of the main body is connected with an exhaust pipe through a pipeline, the input end of the exhaust pipe is located on the lower side of the second filter layer, the inner side of the bottom of the main body is fixedly provided with an inclined table, the bottom of the inclined table is provided with a sewage tank, the bottom of the sewage tank is provided with a liquid outlet, the bottom of the liquid outlet is provided with a valve, and the bottom of the base is fixedly provided with a plurality of supports. When in use, the exhaust gas and the treatment liquid are transported into the inside of the main body through the air inlet mechanism, and then the exhaust gas and the treatment liquid are atomized and sprayed out through the spray mechanism. The reacted liquid flows into the sewage tank at the bottom of the main body through the filtration of the first filter layer and the second filter layer, the harmless gas after the treatment is discharged along the exhaust pipe, and the impurities filtered out from the surfaces of the first filter layer and the second filter layer are collected through the dirt collecting mechanism, so that the impurities can be conveniently collected and treated.

[0008] Further, the air inlet mechanism comprises an input pipe, the output end of the input pipe extends to the inside of the main body through the side wall of the main body, the input end of the input pipe is connected with an air outlet pipe through a pipeline, the input end of the air outlet pipe is connected with the output end of a high-pressure air pump through a pipeline, the high-pressure air pump is fixedly arranged on the top of the main body, the input end of the high-pressure air pump is connected with an air inlet pipe through a pipeline, and the input end of the air inlet pipe is connected with an exhaust gas generating mechanism through a pipeline. When in use, the exhaust gas is compressed through the high-pressure air pump, and then flows into the input pipe along the air outlet pipe and finally into the inside of the main body.

[0009] Further, the lower input end of the input pipe is connected with a liquid inlet pipe through a pipeline, the input end of the liquid inlet pipe is connected with a treatment liquid outlet pipe through a pipeline, the input end of the treatment liquid outlet pipe is connected with a high-pressure liquid pump through a pipeline, the high-pressure liquid pump is fixedly arranged on the outer side wall of the main body, the input end of the high-pressure liquid pump is connected with a treatment liquid inlet pipe through a pipeline, the input end of the treatment liquid inlet pipe is connected with a treatment liquid storage tank through a pipeline, and the end connection portions of the input pipe, the liquid inlet pipe, the air outlet pipe, the air inlet pipe, the treatment liquid outlet pipe and the treatment liquid inlet pipe are all provided with flange interfaces. While the exhaust gas is input, the treatment liquid is pumped into the treatment liquid outlet pipe through the high-pressure liquid pump, and then flows into the inner wall of the input pipe through the liquid inlet pipe.

[0010] Further, the input pipe is internally provided with an air inlet channel, the output end of the air inlet channel is provided with a tapered portion, the inner wall of the input pipe is provided with a spiral pipe, the spiral pipe is arranged around the air inlet channel, the input end of the spiral pipe is connected with the output end of the liquid inlet pipe in a pipeline mode, and the output end of the spiral pipe is connected with the input end of the spraying mechanism in a pipeline mode. After the exhaust gas enters the input pipe and flows along the air inlet channel, the exhaust gas is finally discharged through the tapered portion under pressure, and the treatment liquid enters the spiral pipe after flowing into the input pipe. While flowing in the spiral pipe, the temperature of the exhaust gas can be reduced, so as to avoid that the reaction efficiency of the treatment liquid is reduced due to the excessively high temperature of the exhaust gas.

[0011] Further, the spraying mechanism comprises a fixed pipe which is vertically arranged on the inner wall of the main body, the input end of the fixed pipe is connected with the output end of the tapered portion in a pipeline mode, the output end of the fixed pipe is connected with a rotating pipe, the fixed pipe and the rotating pipe are coaxially arranged, a groove is arranged at the connection position of the fixed pipe and the rotating pipe, a rotating ring is arranged at the end of the rotating pipe which is connected with the fixed pipe, the rotating pipe is rotationally connected with the groove through the rotating ring, a plurality of gas injection holes are arranged on the side wall of the other end of the rotating pipe, the gas injection holes are uniformly arranged around the axis of the rotating pipe, and the direction of the gas injection holes is arranged along the tangent direction of the rotating pipe. After the exhaust gas flows into the fixed pipe through the tapered portion, the exhaust gas enters the inside of the rotating pipe and is sprayed out through the gas injection holes, so that the rotating pipe starts to rotate around the groove due to the tangential thrust generated by the exhaust gas, so that the exhaust gas is sprayed out in the main body in a rotating manner.

[0012] Further, the outer wall of the fixed pipe is fixedly provided with a liquid storage cylinder, the liquid storage cylinder is coaxially arranged with the fixed pipe, the input end of the liquid storage cylinder is connected with a liquid delivery pipe in a pipeline mode, and the input end of the liquid delivery pipe is connected with the output end of the spiral pipe in a pipeline mode. After the treatment liquid flows through the spiral pipe, the treatment liquid flows into the inside of the liquid storage cylinder through the liquid delivery pipe.

[0013] Further, a circulation cylinder is arranged between the inner wall of the liquid storage cylinder and the outer wall of the fixed pipe, the circulation cylinder is coaxially arranged with the fixed pipe, a plurality of circulation holes are arranged on the side wall of the circulation cylinder, the circulation holes are uniformly arranged on the side wall of the circulation cylinder around the fixed pipe, a circulation cavity is formed between the circulation cylinder and the outer wall of the fixed pipe, a plurality of spiral injection holes are arranged at the connection position of the liquid storage cylinder and the outer wall of the fixed pipe, and the spiral direction of the spiral injection holes is opposite to the direction of the gas injection holes. The treatment liquid in the liquid storage cylinder uniformly flows into the circulation cavity through the circulation holes in the side wall of the circulation cylinder, and then is sprayed out from the spiral injection holes at the connection position of the liquid storage cylinder and the fixed pipe in a direction opposite to the spraying direction of the exhaust gas, so that the contact area and the reaction time of the treatment liquid and the exhaust gas are sufficiently increased, and the reaction effect of the treatment liquid and the exhaust gas is effectively improved.

[0014] Further, the dirt collecting mechanism comprises a rotating shaft arranged at the shaft center of the main body, the bottom of the inclined table is fixedly provided with a plurality of connecting frames around the rotating shaft, the other end of the connecting frame is fixedly provided with a mounting ring, the bottom end of the rotating shaft is rotationally connected with the mounting ring through the first filter layer and the second filter layer, the top outer wall of the rotating shaft is provided with a driven bevel gear, the inner end of the rotating tube is connected with a driving shaft, the rotating tube is coaxially arranged with the driving shaft, the driving shaft is vertically arranged with the rotating shaft, the other end of the driving shaft is provided with a driving bevel gear, and the driving bevel gear is meshingly connected with the driven bevel gear. When the rotating tube rotates, the driving shaft starts to rotate, so that the driving bevel gear at the other end of the driving shaft starts to rotate, and when the driving bevel gear rotates, the driven bevel gear meshingly connected therewith starts to rotate, so that the rotating shaft starts to rotate.

[0015] Further, the connecting part between the rotating shaft and the first filter layer and the second filter layer is vertically provided with a first cleaning rod and a second cleaning rod, respectively, the side wall of the connecting part between the main body and the first filter layer and the second filter layer is respectively provided with a first slot and a second slot, the first cleaning rod and the second cleaning rod are arranged along the tangent direction of the rotating shaft, the bottom of the first cleaning rod and the second cleaning rod is provided with a cleaning brush, the first slot is inclined to the horizontal plane at an angle of 30°-60°, and the second slot is inclined to the same direction as the first slot. When the rotating shaft rotates, the first cleaning rod and the second cleaning rod start to rotate, so as to collect the solid impurities filtered out from the surfaces of the first filter layer and the second filter layer. During the rotation of the first cleaning rod and the second cleaning rod, the impurities move to the side wall of the main body under the action of centrifugal force, and finally flow out of the main body along the first slot and the second slot, respectively, so as to clean the surfaces of the first filter layer and the second filter layer, avoid the blockage of the impurities after long time use, and affect the filtering effect.

[0016] Further, the outer side bottom of the first groove and the second groove is respectively provided with a first backflow groove and a second backflow groove, the bottom of the first backflow groove is provided with a first backflow hole between the sidewall of the main body, the first backflow hole is located at the upper part of the second filter layer, the top of the first backflow groove is provided with a first filter plate, the orientation of the first filter plate coincides with the first groove, the second backflow groove is provided with a second backflow hole between the sidewall of the main body, the second backflow hole is located at the upper part of the inclined platform, the top of the second backflow groove is provided with a second filter plate, the orientation of the second filter plate coincides with the second groove, the outer side of the first backflow groove and the second backflow groove is fixedly provided with a sewage collecting groove. After the impurities flow out along the first groove, the impurities fall on the surface of the first filter plate at the top of the first backflow groove, and flow downward under the action of gravity, in the process of flowing, the liquid in the impurities enters the first backflow groove through the first filter plate, and then flows into the main body again along the first backflow hole, the remaining solid impurities flow into the sewage collecting groove along the first filter plate, and the liquid part of the impurities discharged from the second groove flows into the main body again, and the solid part flows into the sewage collecting groove, so that the solid impurities and sewage are classified and collected, and the solid impurities and sewage are treated respectively.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The environment-friendly chemical waste gas absorption tower, through the spraying mechanism, the treatment liquid in the liquid storage cylinder flows into the circulation cavity uniformly through the circulation holes in the sidewall of the circulation cylinder, and then is sprayed out from the spiral spray holes at the connection between the liquid storage cylinder and the fixed pipe in the direction opposite to the waste gas spraying, so that the contact area and reaction time of the treatment liquid and the waste gas are sufficiently increased, and the reaction effect of the treatment liquid and the waste gas is effectively improved.

[0019] 2. The environment-friendly chemical waste gas absorption tower, through the sewage collecting mechanism, after the impurities flow out along the first groove, the impurities fall on the surface of the first filter plate at the top of the first backflow groove, and flow downward under the action of gravity, in the process of flowing, the liquid in the impurities enters the first backflow groove through the first filter plate, and then flows into the main body again along the first backflow hole, the remaining solid impurities flow into the sewage collecting groove along the first filter plate, and the liquid part of the impurities discharged from the second groove flows into the main body again, and the solid part flows into the sewage collecting groove, so that the solid impurities and sewage are classified and collected, and the solid impurities and sewage are treated respectively. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic diagram of the environment-friendly chemical waste gas absorption tower;

[0021] Figure 2 It is the spraying mechanism schematic diagram of the environment-friendly chemical waste gas absorption tower;

[0022] Figure 3is a sectional view of the gas injection hole of the environment-friendly chemical waste gas absorption tower;

[0023] Figure 4 is an enlarged view of the structure at A of the environment-friendly chemical waste gas absorption tower;

[0024] Figure 5 is a top view of the internal structure of the environment-friendly chemical waste gas absorption tower.

[0025] BRIEF DESCRIPTION OF DRAWINGS 1, main body; 2, support; 3, high-pressure gas pump; 4, gas inlet pipe; 5, gas outlet pipe; 6, input pipe; 7, flange interface; 8, liquid inlet pipe; 9, high-pressure liquid pump; 10, treated liquid output pipe; 11, treated liquid input pipe; 12, exhaust pipe; 13, spraying mechanism; 14, drive shaft; 15, drive bevel gear; 16, driven bevel gear; 17, rotating shaft; 18, first filter layer; 19, first cleaning rod; 20, first slot; 21, first backflow groove; 22, first filter plate; 23, second filter layer; 24, second cleaning rod; 25, second slot; 26, second backflow groove; 27, second filter plate; 28, sewage collection groove; 29, inclined platform; 30, connecting frame; 31, mounting ring; 32, sewage tank; 33, liquid outlet; 34, valve; 35, gas inlet; 36, spiral pipe; 37, conical portion; 38, fixed pipe; 39, gas injection hole; 40, liquid delivery pipe; 41, liquid storage cylinder; 42, circulating cylinder; 43, circulating hole; 44, rotating pipe; 45, spiral injection hole; 46, groove; 47, rotating ring. DETAILED DESCRIPTION

[0026] The concept and technical effects of the present application will be described below in conjunction with the embodiments so as to fully understand the purposes, features and effects of the present application.

[0027] As shown in Figures 1-5 , an environment-friendly chemical waste gas absorption tower comprises a base, a gas inlet mechanism, a spraying mechanism 13 and a sewage collection mechanism;

[0028] The top of the base is fixedly provided with a main body 1, the main body 1 is provided in a cylindrical shape, the inside of the main body 1 is fixedly provided with a first filter layer 18 and a second filter layer 23, the first filter layer 18 and the second filter layer 23 are provided in parallel, the first filter layer 18 and the second filter layer 23 are both provided perpendicularly to the axis of the main body 1, the air inlet mechanism is provided on the outer side wall of the main body 1, the spraying mechanism 13 is connected with the output pipeline of the air inlet mechanism, the spraying mechanism 13 is provided on the top of the first filter layer 18, the dirt collecting mechanism is provided between the first filter layer 18 and the second filter layer 23, the left side wall of the bottom of the main body 1 is connected with an exhaust pipe 12 in a pipeline, the input end of the exhaust pipe 12 is located on the lower side of the second filter layer 23, the inner side of the bottom of the main body 1 is fixedly provided with an inclined table 29, the bottom of the inclined table 29 is provided with a sewage tank 32, the bottom of the sewage tank 32 is provided with a liquid outlet 33, the bottom of the liquid outlet 33 is provided with a valve 34, the bottom of the base is fixedly provided with a plurality of supports 2. When in use, the exhaust gas and the treatment liquid are transported into the inside of the main body 1 through the air inlet mechanism, then the exhaust gas and the treatment liquid are atomized and sprayed out through the spraying mechanism 13, the reacted liquid flows into the sewage tank 32 at the bottom of the main body 1 after being filtered by the first filter layer 18 and the second filter layer 23, the harmless gas after the treatment is discharged along the exhaust pipe 12, and the impurities filtered on the surfaces of the first filter layer 18 and the second filter layer 23 can be collected through the dirt collecting mechanism, so that the impurities can be conveniently collected and treated.

[0029] The air inlet mechanism comprises an input pipe 6, the output end of the input pipe 6 extends to the inside of the main body 1 through the side wall of the main body 1, the input end of the input pipe 6 is connected with an air outlet pipe 5 in a pipeline, the input end of the air outlet pipe 5 is connected with the output pipeline of a high-pressure air pump 3, the high-pressure air pump 3 is fixedly provided on the top of the main body 1, the input end of the high-pressure air pump 3 is connected with an air inlet pipe 4 in a pipeline, and the input end of the air inlet pipe 4 is connected with the exhaust gas generating mechanism in a pipeline. When in use, the exhaust gas is compressed through the high-pressure air pump 3, then the exhaust gas flows into the input pipe 6 along the air outlet pipe 5, and finally enters the inside of the main body 1.

[0030] The lower side of the input pipe 6 is connected with the liquid inlet pipe 8, the input end of the liquid inlet pipe 8 is connected with the treatment liquid output pipe 10, the input end of the treatment liquid output pipe 10 is connected with the high-pressure liquid pump 9, the high-pressure liquid pump 9 is fixedly arranged on the outer wall of the main body 1, the input end of the high-pressure liquid pump 9 is connected with the treatment liquid input pipe, the input end of the treatment liquid input pipe is connected with the treatment liquid storage tank, and the end of the input pipe 6, the liquid inlet pipe 8, the gas outlet pipe 5, the gas inlet pipe 4, the treatment liquid output pipe 10 and the treatment liquid input pipe are all provided with flange interfaces 7. While the exhaust gas is input, the treatment liquid is pumped into the treatment liquid output pipe 10 by the high-pressure liquid pump 9, and then flows into the inner wall of the input pipe 6 through the liquid inlet pipe 8.

[0031] The input pipe 6 is internally provided with an air inlet channel 35, the output end of the air inlet channel 35 is provided with a tapered portion 37, the inner wall of the input pipe 6 is provided with a spiral pipe 36, the spiral pipe 36 is arranged around the air inlet channel 35, the input end of the spiral pipe 36 is connected with the output end of the liquid inlet pipe 8, and the output end of the spiral pipe 36 is connected with the input end of the spraying mechanism 13. After the exhaust gas enters the input pipe 6, it flows along the air inlet channel 35, and finally flows out through the tapered portion 37 under pressure, and the treatment liquid flows into the input pipe 6 and then enters the spiral pipe 36, so that the temperature of the exhaust gas can be reduced while flowing in the spiral pipe 36, thereby avoiding the reaction efficiency of the treatment liquid being reduced due to the excessively high temperature of the exhaust gas.

[0032] The spraying mechanism 13 comprises a fixed pipe 38, the fixed pipe 38 is vertically arranged on the inner wall of the main body 1, the input end of the fixed pipe 38 is connected with the output end of the tapered portion 37, the output end of the fixed pipe 38 is connected with a rotating pipe 44, the fixed pipe 38 and the rotating pipe 44 are coaxially arranged, the connection part between the fixed pipe 38 and the rotating pipe 44 is provided with a groove 46, the end of the rotating pipe 44 connected with the fixed pipe 38 is provided with a rotating ring 47, the rotating pipe 44 is rotationally connected with the groove 46 through the rotating ring 47, and the other end of the rotating pipe 44 is provided with a plurality of gas injection holes 39, the plurality of gas injection holes 39 are uniformly arranged around the axis of the rotating pipe 44, and the direction of the gas injection holes 39 is arranged along the tangent direction of the rotating pipe 44. After the exhaust gas flows into the fixed pipe 38 through the tapered portion 37, it enters the inside of the rotating pipe 44 and is sprayed out through the gas injection holes 39, so that a tangential thrust is generated on the rotating pipe 44, and the rotating pipe 44 starts to rotate around the groove 46, so that the exhaust gas is sprayed out in rotation in the main body 1.

[0033] The outer part of the fixed pipe 38 is fixedly provided with a liquid storage cylinder 41, which is coaxially arranged with the fixed pipe 38, and the input end of the liquid storage cylinder 41 is connected with a liquid delivery pipe 40, and the input end of the liquid delivery pipe 40 is connected with the output end of the spiral pipe 36 in a pipeline connection mode. The treatment liquid flows into the liquid storage cylinder 41 through the liquid delivery pipe 40 after flowing through the spiral pipe 36.

[0034] The inner wall of the liquid storage cylinder 41 and the outer wall of the fixed pipe 38 are provided with a circulation cylinder 42, which is coaxially arranged with the fixed pipe 38, and a plurality of circulation holes 43 are formed in the side wall of the circulation cylinder 42, which are uniformly arranged on the side wall of the circulation cylinder 42 around the fixed pipe 38, and a circulation cavity is formed between the circulation cylinder 42 and the outer wall of the fixed pipe 38. A plurality of spiral spray holes 45 are formed in the connection part between the liquid storage cylinder 41 and the outer wall of the fixed pipe 38, and the spiral direction of the spiral spray holes 45 is opposite to the direction of the gas spray hole 39. The treatment liquid in the liquid storage cylinder 41 uniformly flows into the circulation cavity through the circulation holes 43 in the side wall of the circulation cylinder 42, and then is sprayed out of the spiral spray holes 45 in the connection part between the liquid storage cylinder 41 and the fixed pipe 38 in the direction opposite to the exhaust gas, so as to sufficiently increase the contact area and reaction time of the treatment liquid and the exhaust gas, and effectively improve the reaction effect of the treatment liquid and the exhaust gas.

[0035] The collection mechanism comprises a rotating shaft 17 arranged at the shaft center of the main body 1, a plurality of connecting frames 30 are fixedly arranged around the rotating shaft 17 at the bottom of the inclined table 29, an installation ring 31 is fixedly arranged at the other end of the connecting frame 30, the bottom end of the rotating shaft 17 is rotatably connected with the installation ring 31 through the first filter layer 18 and the second filter layer 23, a driven bevel gear 16 is arranged on the top outer side wall of the rotating shaft 17, the inner end of a rotating pipe 44 is connected with a driving shaft 14, the rotating pipe 44 is coaxially arranged with the driving shaft 14, the driving shaft 14 is perpendicularly arranged with the rotating shaft 17, a driving bevel gear 15 is arranged at the other end of the driving shaft 14, and the driving bevel gear 15 is meshingly connected with the driven bevel gear 16. When the rotating pipe 44 rotates, the driving shaft 14 starts to rotate, the driving bevel gear 15 at the other end of the driving shaft 14 starts to rotate, the driving bevel gear 15 drives the driven bevel gear 16 meshingly connected therewith to start to rotate, and the rotating shaft 17 starts to rotate.

[0036] The connecting part of the rotating shaft 17 and the first filter layer 18 and the second filter layer 23 is provided with a first cleaning rod 19 and a second cleaning rod 24 which are perpendicular to the side wall of the connecting part, respectively, and the connecting part of the main body 1 and the first filter layer 18 and the second filter layer 23 is provided with a first slot 20 and a second slot 25, respectively, the first cleaning rod 19 and the second cleaning rod 24 are arranged along the tangent direction of the rotating shaft 17, the bottom of the first cleaning rod 19 and the second cleaning rod 24 is provided with a cleaning brush, the first slot 20 is arranged at an angle of 30° with the horizontal plane, and the second slot 25 is arranged in the same direction as the first slot 20. When the rotating shaft 17 rotates, the first cleaning rod 19 and the second cleaning rod 24 start to rotate, so as to collect the solid impurities filtered out from the surface of the first filter layer 18 and the second filter layer 23. The impurities move to the side wall of the main body 1 under the action of centrifugal force during the rotation of the first cleaning rod 19 and the second cleaning rod 24, and finally flow out of the main body 1 along the first slot 20 and the second slot 25, respectively, so as to clean the surface of the first filter layer 18 and the second filter layer 23, avoid the blockage of the impurities after long time use, and affect the filtering effect.

[0037] The outer bottom of the first slot 20 and the second slot 25 is provided with a first backflow groove 21 and a second backflow groove 26, respectively, the bottom of the first backflow groove 21 and the side wall of the main body 1 is provided with a first backflow hole, the first backflow hole is located at the upper part of the second filter layer 23, the top of the first backflow groove 21 is provided with a first filter plate 22, the direction of the first filter plate 22 coincides with the direction of the first slot 20, the second backflow groove 26 and the side wall of the main body 1 is provided with a second backflow hole, the second backflow hole is located at the upper part of the inclined table 29, the top of the second backflow groove 26 is provided with a second filter plate 27, the direction of the second filter plate 27 coincides with the direction of the second slot 25, and the outer side of the first backflow groove 21 and the second backflow groove 26 is fixedly provided with a sewage collecting groove 28. After the impurities flow out along the first slot 20, they fall on the surface of the first filter plate 22 at the top of the first backflow groove 21, and flow downward under the action of gravity. In the process of flowing, the liquid in the impurities enters the first backflow groove 21 through the first filter plate 22, and then flows into the main body 1 again along the first backflow hole. The remaining solid impurities flow into the sewage collecting groove 28 along the first filter plate 22. The liquid part of the impurities discharged from the second slot 25 flows into the main body 1 again, and the solid part flows into the sewage collecting groove 28, so as to realize the classified collection of the solid impurities and sewage, and facilitate the separate treatment of them.

[0038] Working principle: when processing, the exhaust gas is compressed by high-pressure gas pump 3, then flows into the input pipe 6 along the outlet pipe 5, and finally enters the inside of the main body 1. At the same time, the processing liquid is pumped into the processing liquid output pipe 10 by the high-pressure liquid pump 9, then flows into the inner wall of the input pipe 6 through the liquid inlet pipe 8, and finally flows along the gas inlet channel 35 after the exhaust gas enters the input pipe 6, and is discharged by the tapered part 37. The processing liquid flows into the input pipe 6 and enters the spiral pipe 36, which can reduce the temperature of the exhaust gas while flowing in the spiral pipe 36, thereby avoiding the decrease of the reaction efficiency of the processing liquid due to the high temperature of the exhaust gas.

[0039] After the exhaust gas passes through the tapered part 37, it flows into the fixed pipe 38, then enters the inside of the rotating pipe 44 and is sprayed out through the gas injection hole 39, thereby generating a tangential thrust on the rotating pipe 44, making the rotating pipe 44 start to rotate around the groove 46, so that the exhaust gas is sprayed out in rotation in the main body 1. The processing liquid flows through the spiral pipe 36 and then flows into the inside of the liquid storage cylinder 41 through the liquid delivery pipe 40. The processing liquid in the inside of the liquid storage cylinder 41 uniformly flows into the circulation cavity through the circulation hole 43 in the side wall of the circulation cylinder 42, and then is sprayed out from the spiral injection hole 45 at the connection between the liquid storage cylinder 41 and the fixed pipe 38 in the opposite direction of the exhaust gas spraying, thereby sufficiently increasing the contact area and reaction time of the processing liquid and the exhaust gas, and effectively improving the reaction effect of the processing liquid and the exhaust gas.

[0040] When the rotating pipe 44 rotates, the driving shaft 14 starts to rotate, making the driving bevel gear 15 at the other end of the driving shaft 14 start to rotate. When the driving bevel gear 15 rotates, the driven bevel gear 16 engaged with it starts to rotate, making the rotating shaft 17 start to rotate. When the rotating shaft 17 rotates, the first cleaning rod 19 and the second cleaning rod 24 start to rotate, thereby collecting the solid impurities filtered out from the surfaces of the first filter layer 18 and the second filter layer 23. The impurities move towards the side wall of the main body 1 under the action of centrifugal force during the rotation of the first cleaning rod 19 and the second cleaning rod 24, and finally flow out of the outside of the main body 1 along the first slot 20 and the second slot 25, respectively, thereby realizing the cleaning of the surfaces of the first filter layer 18 and the second filter layer 23, avoiding the blockage of the impurities after a long time of use, and affecting the filtering effect. The impurities flowing out along the first slot 20 fall on the surface of the first filter plate 22 at the top of the first backflow groove 21, and flow downward under the action of gravity. The liquid in the impurities enters the first backflow groove 21 through the first filter plate 22 during the flowing process, and then flows into the main body 1 again along the first backflow hole. The remaining solid impurities flow into the sewage collection groove 28 along the first filter plate 22. The liquid part of the impurities discharged from the second slot 25 flows into the main body 1 again, and the solid part flows into the sewage collection groove 28, thereby realizing the classified collection of the solid impurities and the sewage, and facilitating the separate treatment of them.

[0041] The above examples are only some of the embodiments of the present application, but not all the embodiments, and other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative labor are within the protection scope of the present application.

Claims

1. An environmentally friendly chemical waste gas absorption tower, characterized in that: It comprises a base, an air inlet mechanism, a spraying mechanism (13) and a sewage collecting mechanism. The top of the base is fixedly provided with a main body (1), the main body (1) is provided in a cylindrical shape, the inside of the main body (1) is fixedly provided with a first filter layer (18) and a second filter layer (23), the first filter layer (18) and the second filter layer (23) are provided in parallel, the first filter layer (18) and the second filter layer (23) are both provided perpendicularly to the axis of the main body (1), the air inlet mechanism is arranged on the outer sidewall of the main body (1), the spraying mechanism (13) is connected with the output pipeline of the air inlet mechanism, the spraying mechanism (13) is arranged on the top of the first filter layer (18), the sewage collecting mechanism is arranged between the first filter layer (18) and the second filter layer (23), the left sidewall of the main body (1) is provided at the bottom with an exhaust pipe (12), the input end of the exhaust pipe (12) is located on the lower side of the second filter layer (23), the inner side of the bottom of the main body (1) is fixedly provided with an inclined table (29), the bottom of the inclined table (29) is provided with a sewage tank (32), the bottom of the sewage tank (32) is provided with a liquid outlet (33), the bottom of the liquid outlet (33) is provided with a valve (34), the bottom of the base is fixedly provided with a plurality of supports (2); The air inlet mechanism comprises an input pipe (6), the output end of the input pipe (6) extends through the sidewall of the main body (1) to the inside of the main body (1), the input end of the input pipe (6) is connected with an air outlet pipe (5), the input end of the air outlet pipe (5) is connected with the output pipeline of a high-pressure air pump (3), the high-pressure air pump (3) is fixedly arranged on the top of the main body (1), the input end of the high-pressure air pump (3) is connected with an air inlet pipe (4), the input end of the air inlet pipe (4) is connected with the air generating mechanism; The lower input end of the input pipe (6) is connected with a liquid inlet pipe (8), the input end of the liquid inlet pipe (8) is connected with a treatment liquid output pipe (10), the input end of the treatment liquid output pipe (10) is connected with a high-pressure liquid pump (9), the high-pressure liquid pump (9) is fixedly arranged on the outer sidewall of the main body (1), the input end of the high-pressure liquid pump (9) is connected with a treatment liquid inlet pipe (11), the input end of the treatment liquid inlet pipe (11) is connected with a treatment liquid storage tank, the end connection of the input pipe (6), the liquid inlet pipe (8), the air outlet pipe (5), the air inlet pipe (4), the treatment liquid output pipe (10) and the treatment liquid inlet pipe (11) is provided with a flange joint (7). The input pipe (6) is internally provided with an air inlet channel (35), the output end of the air inlet channel (35) is provided with a tapered portion (37), the inner wall of the input pipe (6) is provided with a spiral pipe (36), the spiral pipe (36) is arranged around the air inlet channel (35), the input end of the spiral pipe (36) is connected with the output end of the liquid inlet pipe (8), and the output end of the spiral pipe (36) is connected with the input end of the spraying mechanism (13). The spraying mechanism (13) comprises a fixed pipe (38), the fixed pipe (38) is vertically arranged on the inner wall of the main body (1), the input end of the fixed pipe (38) is connected with the output end of the tapered portion (37), the output end of the fixed pipe (38) is connected with a rotating pipe (44), the fixed pipe (38) and the rotating pipe (44) are coaxially arranged, the connection part between the fixed pipe (38) and the rotating pipe (44) is provided with a groove (46), the end of the rotating pipe (44) connected with the fixed pipe (38) is provided with a rotating ring (47), the rotating pipe (44) is rotationally connected with the groove (46) through the rotating ring (47), the side wall of the other end of the rotating pipe (44) is provided with a plurality of gas injection holes (39), the plurality of gas injection holes (39) are uniformly arranged around the axis of the rotating pipe (44), and the direction of the gas injection holes (39) is arranged along the tangent direction of the rotating pipe (44). The outer wall of the fixed pipe (38) is fixedly provided with a liquid storage cylinder (41), the liquid storage cylinder (41) is coaxially arranged with the fixed pipe (38), and the input end of the liquid storage cylinder (41) is connected with a liquid conveying pipe (40). The inner wall of the liquid storage cylinder (41) and the outer wall of the fixed pipe (38) are provided with a circulating cylinder (42), the circulating cylinder (42) is coaxially arranged with the fixed pipe (38), a plurality of circulating holes (43) are arranged on the side wall of the circulating cylinder (42), the plurality of circulating holes (43) are uniformly arranged on the side wall of the circulating cylinder (42) around the fixed pipe (38), a circulating cavity is formed between the circulating cylinder (42) and the outer wall of the fixed pipe (38), a plurality of spiral injection holes (45) are arranged on the connection part between the liquid storage cylinder (41) and the outer wall of the fixed pipe (38), and the spiral direction of the spiral injection holes (45) is opposite to the direction of the gas injection holes (39).

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