Tail gas absorption device for calcium chloride production and use method

Abstract

The invention relates to the technical field of chemical tail gas treatment, in particular to a tail gas absorption device for calcium chloride production and a use method.The tail gas absorption device comprises a box body, a conveying and sweeping mechanism is arranged at the top end of the box body, a circulating spraying mechanism is arranged at the top end of the conveying and sweeping mechanism, and an adsorption mechanism is arranged at the top end of the circulating spraying mechanism; according to the tail gas absorption device for calcium chloride production and the using method, the spraying head vertically and downwards sprays water mist to the side wall of the hopper bin, the water mist absorbs harmful gas such as hydrogen chloride and carbon dioxide contained in dust and particles, tail gas is further purified, and the tail gas absorption effect is improved. And the situation that toxic gas still exists in the dust is avoided, water mist sprayed out of the spraying head moves upwards along with tail gas cyclone, the water mist continuously absorbs the harmful gas in the tail gas, and the tail gas is further purified.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical tail gas treatment, and particularly relates to a tail gas absorption device and a using method for calcium chloride production. Background Technique

[0002] With the continuous development of industry, the demand for calcium chloride in various industries is increasing day by day. The market demand prompts enterprises to continuously expand the production scale of calcium chloride to meet the needs of various industries. The main raw materials for preparing calcium chloride include calcium carbonate, hydrochloric acid, chlorine gas, metallic calcium, etc. During the production process of calcium chloride, the tail gas not only contains gases such as hydrogen chloride and carbon dioxide, but also contains a large amount of dust and particulate matter. The sources of these dust and particulate matter are extensive, including fine particles generated during the processing of raw materials and by-product particles generated during the reaction process.

[0003] Most of the existing tail gas absorption devices for calcium chloride production focus on the treatment of gas components, and the treatment effect on dust and particulate matter in the tail gas is not good. The presence of dust and particulate matter will affect the efficiency and effect of the subsequent gas absorption process. At the same time, the dust and particulate matter discharged into the atmosphere without effective treatment will cause serious environmental pollution to the harmful gases contained in the dust and particulate matter, endangering human health. Moreover, the absorption efficiency is low, and the harmful components in the tail gas cannot be fully absorbed, resulting in unqualified discharged tail gas. To solve the above problems, we propose a tail gas absorption device and a using method for calcium chloride production. Summary of the Invention

[0004] The main purpose of the present invention is to provide a tail gas absorption device and a using method for calcium chloride production, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A tail gas absorption device and a using method for calcium chloride production, including a box body. A transmission and cleaning mechanism is arranged at the top end of the box body. A circulating spraying mechanism is arranged at the top end of the transmission and cleaning mechanism. An adsorption mechanism is arranged at the top end of the circulating spraying mechanism. The transmission and cleaning mechanism includes a second housing. The bottom end of the second housing is fixedly connected to the top end of the box body. A hole is opened at the top end of the second housing, and a first sleeve is fixedly connected inside the hole. A sieve plate is fixedly connected below the inner side of the first sleeve. A baffle is rotatably connected to the top end of the sieve plate. A plurality of springs are arranged at the bottom end of the baffle penetrating through the sieve plate. A reinforcing rod is arranged at the bottom end of the plurality of springs. Cleaning rods are fixedly connected to the left and right sides of the outer wall of the reinforcing rod. A plurality of cleaning strips are arranged at the top ends of the plurality of cleaning rods. The top ends of the plurality of cleaning strips are in contact with the bottom end of the sieve plate. A rotating blade is fixedly connected to the bottom end of the reinforcing rod.

[0006] Preferably, a spiral track is provided below the outer side wall of the first sleeve, and the other end of the spiral track is fixedly connected to the inner side wall of the second housing. A hole is provided on the right side of the second housing and an air inlet pipe is fixedly connected thereto. The air inlet pipe is located above the spiral track. A hole is provided at the top end of the box body and a hopper is fixedly connected thereto. The other end of the hopper is fixedly connected to the inner side wall of the second housing.

[0007] Preferably, a jetting mechanism is provided at the bottom end of the reinforcing rod. The jetting mechanism includes a third sleeve. A plurality of connecting holes are arranged in a circumferential array on the outer side wall of the third sleeve. A second sleeve is rotatably connected to the outer side wall of the third sleeve. The second sleeve is fitted with the plurality of connecting holes. A hole is provided at the right end of the second sleeve and a conveying pipe is fixedly connected thereto.

[0008] Preferably, a water tank is provided at the right end of the box body. A hole is provided at the top end of the water tank and a second water pump is fixedly connected thereto. The other end of the conveying pipe is fixedly connected to the output end of the second water pump. A hole is provided on the left side wall at the bottom end of the third sleeve and a fourth sleeve is fixedly connected thereto. The inclination angle of the fourth sleeve is the same as the inclination angle inside the hopper. A plurality of holes are provided at the bottom end of the fourth sleeve and a spray head is fixedly connected thereto. The end direction of the spray head is vertically downward.

[0009] Preferably, the top end of the third sleeve is fixedly connected to the bottom end of the reinforcing rod. Support rods are fixedly connected to the front and rear ends inside the box body. The bottom end of the third sleeve is rotatably connected to the bottom ends of the support rods. The jetting mechanism includes a water tank. The left end of the water tank is fixedly connected to the right end of the box body.

[0010] Preferably, the circulating spraying mechanism includes a first housing. The bottom end of the first housing is detachably connected to the top end of the second housing. A spraying chamber is fixedly connected above the inner side of the first housing. There is a space between the outer side wall of the spraying chamber and the lower part of the inner side of the first housing. A plurality of holes are arranged in a circumferential array on the outer side wall of the spraying chamber and all are fixedly connected with air conveying pipes. The end directions of the plurality of air conveying pipes are all inclined downward.

[0011] Preferably, a limiting strip is provided on the inner side wall of the spraying chamber. The limiting strip is located below the plurality of air conveying pipes. Liquid sensors are provided at both the left and right ends of the other side of the limiting strip. A hole is provided at the left end of the inner side of the spraying chamber and a liquid outlet pipe is fixedly connected thereto. The other end of the liquid outlet pipe is fixedly connected to a first water pump. An infusion pipe is provided at the output end of the first water pump.

[0012] Preferably, the adsorption mechanism includes a lid, the bottom end of the lid is detachably connected to the top end of the first housing, a fixing frame is fixedly connected to the inner side of the lid, a T-shaped sliding groove is formed in the inner side of the fixing frame, a T-shaped sliding block is slidably connected in the T-shaped sliding groove, the other end of the T-shaped sliding block is provided with a spraying plate, holes are formed in the top end of the spraying plate and a plurality of groups of T-shaped clamping blocks are arranged in a circumferential array on the side wall, there is a space between the top end of the spraying plate and the bottom end of the inner side of the lid, and a plurality of groups of holes are formed in the bottom end of the spraying plate and liquid spraying heads are fixedly connected thereto.

[0013] Preferably, holes are formed in the top ends of the lid and the spraying plate and a rotating rod is rotatably connected thereto. A plurality of groups of T-shaped clamping grooves with different depths are formed in a circumferential array on the outer side wall of the rotating rod. The T-shaped clamping blocks are fitted with the T-shaped clamping grooves. A plurality of adsorption boxes are detachably connected to the inner sides of the plurality of groups of T-shaped clamping grooves. Porous materials are placed inside the plurality of adsorption boxes. The plurality of adsorption boxes are obliquely placed. A transmission shaft is rotatably connected to the top end of the lid. A motor is arranged at the top end of the transmission shaft. A transmission strip is connected between the side wall of the top end of the rotating rod and the outer side wall of the transmission shaft in a driving manner.

[0014] Preferably, a plurality of groups of openings are formed in the front end of the box body and a drawer is detachably connected thereto. Absorbing liquid is contained inside the plurality of drawers. Holes are formed in the outer side walls on the right sides of the first housing and the spraying chamber and air outlet pipes are fixedly connected thereto. An electromagnetic valve is rotatably connected to the inner side of the left end of the air outlet pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The tail gas absorption device and its usage method for calcium chloride production. The tail gas generated during calcium chloride production enters the second housing through the intake pipe. Since a spiral track is provided below the outer sidewall of the first sleeve, the tail gas makes a spiral upward movement under the guidance of the spiral track. The tail gas changes from a linear motion to a circular motion. When the rotating and descending air flow enters the hopper bin, it converges towards the center of the hopper bin due to the contraction of the hopper bin. Larger particle dust and particulate matter are separated to the lower part of the hopper bin and thus fall into the drawer. The gas moves upward and enters the first sleeve. Smaller particles are intercepted by the sieve hole plate, further separating particulate matter such as dust from the gas. Under the action of the second water pump, the water in the water tank sprays vertically downward as water mist from the spray head onto the sidewall of the hopper bin, flushing the dust and other impurities accumulated on the inner sidewall of the hopper bin to the bottom of the box body. At the same time, the water mist absorbs harmful gases such as hydrogen chloride and carbon dioxide contained in the dust and particles, further purifying the tail gas and avoiding the presence of toxic gases in the dust. Finally, it flows into the drawer, effectively treating the dust and particulate matter, absorbing the harmful gases contained in the dust and particulate matter, protecting human health. At the same time, the water mist sprayed by the spray head moves upward along with the tail gas cyclone, enters the first sleeve together and enters the spray chamber. During this process, the water mist continuously absorbs the harmful gases in the tail gas, further purifying the tail gas and improving the efficiency of tail gas treatment. The tail gas is further absorbed by the absorption liquid in the drawer.

[0016] 2. The tail gas absorption device and its usage method for calcium chloride production. The tail gas passes through the space between the spray chamber and the first housing and enters the spray chamber through multiple groups of gas transmission pipes. At this time, the first water pump is started, and the absorption liquid is sprayed out through the infusion pipe, spray plate and liquid spray head, coming into full contact with the tail gas. The absorption liquid undergoes a chemical reaction with the harmful gases in the tail gas to achieve the absorption of harmful gases such as hydrogen chloride and carbon dioxide. At the same time, the motor is started, and the rotating rod is driven to rotate through the transmission shaft and transmission strip, and the spray plate is driven to rotate through the T-shaped block, so that the absorption liquid is evenly sprinkled into the spray chamber through multiple groups of liquid spray heads, and the adsorption box is rotated to contact the tail gas, enabling the porous material inside the adsorption box to adsorb the remaining harmful gases. The spray head evenly sprays the absorption liquid inside the adsorption box, making the absorption liquid come into full contact with the tail gas, further purifying the tail gas, improving the quality of tail gas treatment, and ensuring that the discharged tail gas is cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the overall structural cutaway schematic diagram of the circulating spray mechanism of the present invention; Figure 3 is the overall structural cutaway schematic diagram of the transmission and cleaning mechanism of the present invention; Figure 4 is of the present invention Figure 3 magnified schematic diagram at A in; Figure 5 For the present invention Figure 3 Enlarged schematic view at position B in Figure 6 For the present invention Figure 2 Enlarged schematic view at position C in Figure 7 Partial structural schematic view of the adsorption mechanism of the present invention; Figure 8 Cut-away schematic view of the overall structure of the jet flushing mechanism of the present invention.

[0018] In the figure: 1. Box body; 11. Drawer; 12. Solenoid valve; 13. Air outlet pipe; 2. Circulating spray mechanism; 3. Adsorption mechanism; 4. Transmission and cleaning mechanism; 5. Jet flushing mechanism; 21. First housing; 22. Spray chamber; 23. Limit strip; 24. Liquid outlet pipe; 25. First water pump; 26. Liquid delivery pipe; 27. Fixed frame; 28. T-shaped chute; 29. T-shaped slider; 291. Spray plate; 292. Liquid spray head; 293. T-shaped clamping block; 294. Liquid sensor; 295. Air delivery pipe; 31. Motor; 32. Transmission shaft; 33. Transmission strip; 34. Rotating rod; 35. T-shaped card slot; 36. Adsorption box; 37. Lid; 41. Second housing; 42. First sleeve; 43. Spiral track; 44. Hopper bin; 45. Sieve plate; 46. Baffle; 47. Spring; 48. Reinforcing rod; 49. Cleaning rod; 491. Cleaning strip; 492. Rotating blade; 493. Air inlet pipe; 51. Water tank; 52. Second water pump; 53. Delivery pipe; 54. Second sleeve; 55. Third sleeve; 56. Connection hole; 57. Fourth sleeve; 58. Spray head; 59. Support rod. Detailed implementation manners

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0020] Such as Figure 1 - Figure 8As shown in the figure, a tail gas absorption device and a usage method for calcium chloride production include a box body 1. At the top of the box body 1, there is a transmission and cleaning mechanism 4. At the top of the transmission and cleaning mechanism 4, there is a circulating spray mechanism 2. At the top of the circulating spray mechanism 2, there is an adsorption mechanism 3. The transmission and cleaning mechanism 4 includes a second housing 41. The bottom end of the second housing 41 is fixedly connected to the top end of the box body 1. There is a hole at the top of the second housing 41, and a first sleeve 42 is fixedly connected inside the hole. A sieve plate 45 is fixedly connected below the inner side of the first sleeve 42. A baffle 46 is rotatably connected to the top of the sieve plate 45. A plurality of springs 47 are arranged at the bottom end of the baffle 46 penetrating through the sieve plate 45. A reinforcing rod 48 is arranged at the bottom ends of the plurality of springs 47. Cleaning rods 49 are fixedly connected to the left and right sides of the outer side wall of the reinforcing rod 48. A plurality of cleaning strips 491 are arranged at the top ends of the plurality of cleaning rods 49. The top ends of the plurality of cleaning strips 491 are in contact with the bottom end of the sieve plate 45. A rotating blade 492 is fixedly connected to the bottom end of the reinforcing rod 48.

[0021] In this embodiment, a spiral track 43 is arranged below the outer side wall of the first sleeve 42. The other end of the spiral track 43 is fixedly connected to the inner side wall of the second housing 41. There is a hole on the right side of the second housing 41 and an air inlet pipe 493 is fixedly connected. The air inlet pipe 493 is located above the spiral track 43. There is a hole at the top of the box body 1 and a hopper 44 is fixedly connected. The other end of the hopper 44 is fixedly connected to the inner side wall of the second housing 41.

[0022] Specifically, the tail gas generated in calcium chloride production enters the second housing 41 through the air inlet pipe 493. Since the spiral track 43 is arranged below the outer side wall of the first sleeve 42, the tail gas makes a spiral upward movement under the guidance of the spiral track 43. The tail gas changes from a linear movement to a circular movement. When the rotating and descending air flow enters the hopper 44, it converges towards the center of the hopper 44 due to the contraction of the hopper 44. Larger particle dust and particulate matter are separated to the lower part of the hopper 44 and thus fall into the drawer 11.

[0023] In this embodiment, a spray mechanism 5 is arranged at the bottom end of the reinforcing rod 48. The spray mechanism 5 includes a third sleeve 55. A plurality of connection holes 56 are arranged in a circumferential array on the outer side wall of the third sleeve 55. A second sleeve 54 is rotatably connected to the outer side wall of the third sleeve 55. The second sleeve 54 fits with the plurality of connection holes 56. There is a hole at the right end of the second sleeve 54 and a delivery pipe 53 is fixedly connected.

[0024] Specifically, the water in the water tank 51, under the action of the second water pump 52, passes through the delivery pipe 53, the second sleeve 54, the third sleeve 55 and the fourth sleeve 57, and sprays water mist vertically downward from the spray head 58 to the side wall of the hopper 44.

[0025] In this embodiment, a water tank 51 is provided at the right end of the box body 1. A hole is formed at the top of the water tank 51 and a second water pump 52 is fixedly connected thereto. The other end of the conveying pipe 53 is fixedly connected to the output end of the second water pump 52. A hole is formed in the left side wall at the bottom end of the third sleeve 55 and a fourth sleeve 57 is fixedly connected thereto. The inclination angle of the fourth sleeve 57 is the same as the inner inclination angle of the hopper 44. A plurality of holes are formed at the bottom end of the fourth sleeve 57 and a spray head 58 is fixedly connected thereto. The end direction of the spray head 58 is vertically downward.

[0026] Specifically, the water mist absorbs harmful gases such as hydrogen chloride and carbon dioxide contained in the dust and particles, further purifies the tail gas, and avoids the existence of toxic gases in the dust. Finally, it flows into the drawer 11. At the same time, the water mist sprayed by the spray head 58 moves upward along with the tail gas cyclone, enters the first sleeve 42 together and then enters the spray chamber 22. During this process, the water mist continuously absorbs the harmful gases in the tail gas, further purifies the tail gas, and improves the efficiency of tail gas treatment.

[0027] In this embodiment, the top end of the third sleeve 55 is fixedly connected to the bottom end of the reinforcing rod 48. The front and rear ends inside the box body 1 are fixedly connected with support rods 59. The bottom end of the third sleeve 55 is rotatably connected to the bottom end of the support rod 59. The spray cleaning mechanism 5 includes a water tank 51, and the left end of the water tank 51 is fixedly connected to the right end of the box body 1.

[0028] Specifically, the rotating blade 492 will also rotate under the impact of the tail gas. The cleaning rods 49 on the left and right sides of the outer side wall of the reinforcing rod 48 rotate together with the reinforcing rod 48. At the same time, under the action of a plurality of springs 47, the cleaning strip 491 is in close contact with the bottom end of the sieve hole plate 45. The cleaning strip 491 at the top end of the cleaning rod 49 cleans the bottom end of the sieve hole plate 45, preventing the sieve holes of the sieve hole plate 45 from being blocked by dust and other particulate matters, and further separating the dust and other particulate matters from the gas.

[0029] In this embodiment, the circulating spray mechanism 2 includes a first housing 21. The bottom end of the first housing 21 is detachably connected to the top end of the second housing 41. A spray chamber 22 is fixedly connected above the inside of the first housing 21. There is a space between the outer side wall of the spray chamber 22 and the lower part inside the first housing 21. A plurality of holes are formed in a circumferential array on the outer side wall of the spray chamber 22 and all are fixedly connected with air conveying pipes 295. The end directions of the plurality of air conveying pipes 295 are all inclined downward.

[0030] Specifically, the tail gas passes through the space between the spray chamber 22 and the first housing 21 and enters the spray chamber 22 through a plurality of air conveying pipes 295. At this time, the first water pump 25 is started, and the absorption liquid is sprayed out through the liquid conveying pipe 26, the spray plate 291 and the liquid spraying head 292, comes into full contact with the tail gas, and a chemical reaction occurs between the absorption liquid and the harmful gases in the tail gas to achieve the absorption of harmful gases such as hydrogen chloride and carbon dioxide.

[0031] In this embodiment, a limit strip 23 is provided on the inner wall of the spray chamber 22, and the limit strip 23 is located below the multiple groups of air transfer tubes 295. Liquid sensors 294 are provided on both the left and right ends of the other side of the limit strip 23. A hole is opened on the left end of the inner side of the spray chamber 22 and is fixedly connected to a liquid outlet pipe 24. The other end of the liquid outlet pipe 24 is fixedly connected to a first water pump 25, and a liquid infusion tube 26 is provided at the output end of the first water pump 25.

[0032] Specifically, a proper amount of absorption liquid such as calcium hydroxide solution is added into the spray bin 22. When the absorption liquid in the spray bin 22 reaches the limit bar 23, the liquid sensor 294 is triggered to ensure that the liquid level of the absorption liquid is within a suitable range to meet the needs of circulating spraying to absorb harmful gases.

[0033] In this embodiment, the adsorption mechanism 3 includes a cover 37, the bottom end of the cover 37 is detachably connected to the top end of the first shell 21, a fixing frame 27 is fixedly connected to the inner side of the cover 37, a T-shaped slide groove 28 is provided on the inner side of the fixing frame 27, a T-shaped slider 29 is slidably connected to the inner side of the T-shaped slide groove 28, a spray plate 291 is provided at the other end of the T-shaped slider 29, a hole is provided on the top end of the spray plate 291 and a plurality of groups of T-shaped blocks 293 are provided on the side wall in a circular array, there is space between the top end of the spray plate 291 and the inner bottom end of the cover 37, a plurality of groups of holes are provided on the bottom end of the spray plate 291 and a liquid spray head 292 is fixedly connected.

[0034] Specifically, the motor 31 is started, and the rotating rod 34 is driven to rotate through the transmission shaft 32 and the transmission bar 33 , and the spray plate 291 is driven to rotate through the T-shaped block 293 , so that the absorption liquid is evenly sprinkled into the spray chamber 22 through the multiple groups of spray heads 292 .

[0035] In this embodiment, holes are provided on the top of the cover 37 and the top of the spray plate 291 and are rotatably connected to a rotating rod 34. The outer wall of the rotating rod 34 is provided with multiple groups of T-shaped slots 35 of different depths in a circular array. The T-shaped block 293 fits with the T-shaped slot 35. The inner sides of the multiple groups of T-shaped slots 35 are detachably connected to adsorption boxes 36. Porous materials are placed inside the multiple groups of adsorption boxes 36. The multiple groups of adsorption boxes 36 are placed at an angle. The top of the cover 37 is rotatably connected to a transmission shaft 32. A motor 31 is provided at the top of the transmission shaft 32. The top side wall of the rotating rod 34 and the outer side wall of the transmission shaft 32 are transmission-connected with a transmission bar 33.

[0036] Specifically, the rotating rod 34 drives multiple groups of adsorption boxes 36 to rotate and contact with the exhaust gas, so that the porous material inside the adsorption box 36 adsorbs the remaining harmful gas, and the spray head 292 sprays the absorption liquid evenly on the adsorption box 36, so that the absorption liquid is in full contact with the exhaust gas, further purifying the exhaust gas and improving the quality of exhaust gas treatment.

[0037] In this embodiment, multiple groups of openings are provided at the front end of the box body 1, and a drawer 11 is detachably connected. Absorbent liquid is contained inside multiple groups of drawers 11. Holes are provided on the outer side walls of the first housing 21 and the spraying chamber 22, and an air outlet pipe 13 is fixedly connected. A solenoid valve 12 is rotatably connected to the inner side of the left end of the air outlet pipe 13.

[0038] Specifically, the absorbent liquid in the drawer 11 absorbs the toxic gas. By opening the solenoid valve 12, the purified tail gas is discharged from the device through the air outlet pipe 13.

[0039] It should be noted that the present invention is a tail gas absorption device and its usage method for calcium chloride production. The user injects an appropriate amount of water into the water tank 51. At the same time, an appropriate amount of absorbent liquid such as calcium hydroxide solution is added to both the spray chamber 22 and the multiple drawers 11. When the absorbent liquid in the spray chamber 22 reaches the limit strip 23, the liquid sensor 294 is triggered to ensure that the liquid level of the absorbent liquid is within an appropriate range to meet the requirement of cyclic spray absorption of harmful gases. The tail gas generated during calcium chloride production enters the second housing 41 through the intake pipe 493. Since a spiral track 43 is provided on the lower outer side wall of the first sleeve 42, the tail gas makes a spiral upward movement under the guidance of the spiral track 43, changing from a linear motion to a circular motion. When the rotating and descending air flow enters the hopper 44, it converges towards the center of the hopper 44 due to the contraction of the hopper 44. Larger particle dust and particulate matter are separated to the lower part of the hopper 44 and thus fall into the drawer 11, while the gas moves upward into the first sleeve 42. The absorbent liquid in the drawer 11 absorbs and decomposes the toxic gases present in the dust particulate matter. Smaller particles are intercepted by the sieve plate 45, and the transmission and cleaning mechanism 4 works synchronously. At the same time, the rotating blade 492 at the bottom end of the reinforcing rod 48 also rotates under the impact of the tail gas. The cleaning rods 49 on the left and right sides of the outer side wall of the reinforcing rod 48 rotate together with the reinforcing rod 48. At the same time, under the action of multiple springs 47, the cleaning strip 491 is in close contact with the bottom end of the sieve plate 45. The cleaning strip 491 at the top end of the cleaning rod 49 cleans the bottom end of the sieve plate 45 to prevent dust and other particulate matter from clogging the sieve holes of the sieve plate 45, further separating the dust and other particulate matter from the gas. The tail gas passes through the space between the spray chamber 22 and the first housing 21 and enters the spray chamber 22 through multiple gas transmission pipes 295. At this time, the first water pump 25 is started, and the absorbent liquid is sprayed out through the infusion pipe 26, the spray plate 291, and the liquid spray head 292, coming into full contact with the tail gas. The absorbent liquid undergoes a chemical reaction with the harmful gases in the tail gas to achieve the absorption of harmful gases such as hydrogen chloride and carbon dioxide. At the same time, the motor 31 is started, driving the rotating rod 34 to rotate through the transmission shaft 32 and the transmission strip 33, and driving the spray plate 291 to rotate through the T-shaped block 293, so that the absorbent liquid is evenly sprayed into the spray chamber 22 through multiple liquid spray heads 292, and the adsorption box 36 is rotated to come into contact with the tail gas, enabling the porous material inside the adsorption box 36 to adsorb the remaining harmful gases. The liquid spray head 292 evenly sprays the absorbent liquid inside the adsorption box 36, enabling the absorbent liquid to come into full contact with the tail gas, further purifying the tail gas and improving the quality of tail gas treatment.

[0040] During the operation of the device, according to the set time interval or the accumulation of impurities in the hopper 44, the second water pump 52 is started. Under the action of the second water pump 52, the water in the water tank 51 passes through the delivery pipe 53, the second sleeve 54, the third sleeve 55 and the fourth sleeve 57, and sprays water mist vertically downward from the spray head 58 to the side wall of the hopper 44, flushing the accumulated dust and other impurities on the inner side wall of the hopper 44 to the bottom of the box body 1. At the same time, the water mist absorbs harmful gases such as hydrogen chloride and carbon dioxide contained in the dust and particles, further purifying the tail gas, avoiding the existence of toxic gases in the dust, and finally flowing into the drawer 11. At the same time, the water mist sprayed by the spray head 58 moves upward following the tail gas cyclone, enters the first sleeve 42 together and enters the spray chamber 22. During this process, the water mist continuously absorbs the harmful gases in the tail gas, further purifying the tail gas and improving the efficiency of tail gas treatment. After being absorbed again by the absorption liquid in the drawer 11, after the above treatment, the solenoid valve 12 is opened, and the purified tail gas is discharged from the device through the outlet pipe 13.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas absorption device and its usage method for calcium chloride production, comprising a box body (1), characterized in that: A transmission and cleaning mechanism (4) is provided at the top of the box body (1). A circulating spray mechanism (2) is provided at the top of the transmission and cleaning mechanism (4). An adsorption mechanism (3) is provided at the top of the circulating spray mechanism (2). The transmission and cleaning mechanism (4) includes a second housing (41). The bottom end of the second housing (41) is fixedly connected to the top of the box body (1). A hole is provided at the top of the second housing (41), and a first sleeve (42) is fixedly connected inside the hole. A sieve plate (45) is fixedly connected below the inner side of the first sleeve (42). A baffle (46) is rotatably connected to the top of the sieve plate (45). A plurality of springs (47) are provided at the bottom end of the baffle (46) penetrating through the sieve plate (45). A reinforcing rod (48) is provided at the bottom end of the plurality of springs (47). Cleaning rods (49) are fixedly connected to the left and right sides of the outer wall of the reinforcing rod (48). A plurality of cleaning strips (491) are provided at the top ends of the plurality of cleaning rods (49). The top ends of the plurality of cleaning strips (491) are in contact with the bottom end of the sieve plate (45). A rotating blade (492) is fixedly connected to the bottom end of the reinforcing rod (48).

2. The tail gas absorption device and its usage method for calcium chloride production according to claim 1, characterized in that: A spiral track (43) is provided below the outer wall of the first sleeve (42). The other end of the spiral track (43) is fixedly connected to the inner wall of the second housing (41). A hole is provided on the right side of the second housing (41), and an air inlet pipe (493) is fixedly connected. The air inlet pipe (493) is located above the spiral track (43). A hole is provided at the top of the box body (1), and a hopper (44) is fixedly connected. The other end of the hopper (44) is fixedly connected to the inner wall of the second housing (41).

3. The tail gas absorption device and usage method for calcium chloride production according to claim 1, characterized in that: A jetting mechanism (5) is provided at the bottom end of the reinforcing rod (48). The jetting mechanism (5) includes a third sleeve (55). A plurality of connecting holes (56) are provided in a circumferential array on the outer wall of the third sleeve (55). A second sleeve (54) is rotatably connected to the outer wall of the third sleeve (55). The second sleeve (54) is fitted with the plurality of connecting holes (56). A hole is provided at the right end of the second sleeve (54), and a delivery pipe (53) is fixedly connected.

4. An exhaust gas absorption device and a usage method for calcium chloride production according to claim 3, characterized in that: A water tank (51) is provided at the right end of the box body (1). A hole is provided at the top of the water tank (51), and a second water pump (52) is fixedly connected. The other end of the delivery pipe (53) is fixedly connected to the output end of the second water pump (52). A hole is provided on the left side of the bottom end of the third sleeve (55), and a fourth sleeve (57) is fixedly connected. The inclination angle of the fourth sleeve (57) is the same as the inner inclination angle of the hopper (44). A plurality of holes are provided at the bottom end of the fourth sleeve (57), and a spray head (58) is fixedly connected. The end direction of the spray head (58) is vertically downward.

5. The tail gas absorption device and usage method for calcium chloride production according to claim 3, characterized in that: The top end of the third sleeve (55) is fixedly connected to the bottom end of the reinforcing rod (48). The front and rear ends of the inner side of the box body (1) are fixedly connected with support rods (59). The bottom end of the third sleeve (55) is rotatably connected to the bottom end of the support rod (59). The jet flushing mechanism (5) includes a water tank (51), and the left end of the water tank (51) is fixedly connected to the right end of the box body (1).

6. The tail gas absorption device and usage method for calcium chloride production according to claim 1, characterized in that: The circulating spraying mechanism (2) includes a first housing (21). The bottom end of the first housing (21) is detachably connected to the top end of the second housing (41). Above the inner side of the first housing (21), a spraying chamber (22) is fixedly connected. There is a space between the outer side wall of the spraying chamber (22) and the lower inner side of the first housing (21). The outer side wall of the spraying chamber (22) is provided with multiple groups of holes in a circumferential array and all are fixedly connected with air delivery pipes (295). The end directions of the multiple groups of air delivery pipes (295) are all inclined downward.

7. An exhaust gas absorption device and a using method for calcium chloride production according to claim 6, characterized in that: The inner side wall of the spraying chamber (22) is provided with a limiting strip (23). The limiting strip (23) is located below the multiple groups of air delivery pipes (295). Liquid sensors (294) are arranged at the left and right ends of the other side of the limiting strip (23). A hole is opened at the left end of the inner side of the spraying chamber (22) and is fixedly connected with a liquid outlet pipe (24). The other end of the liquid outlet pipe (24) is fixedly connected with a first water pump (25). The output end of the first water pump (25) is provided with an infusion pipe (26).

8. An exhaust gas absorption device and a use method for calcium chloride production according to claim 1, characterized in that: The adsorption mechanism (3) includes a lid (37). The bottom end of the lid (37) is detachably connected to the top end of the first housing (21). A fixing frame (27) is fixedly connected to the inner side of the lid (37). A T-shaped sliding groove (28) is opened in the inner side of the fixing frame (27). A T-shaped sliding block (29) is slidably connected in the T-shaped sliding groove (28). The other end of the T-shaped sliding block (29) is provided with a spraying plate (291). Holes are opened at the top end of the spraying plate (291), and multiple groups of T-shaped clamping blocks (293) are arranged in a circumferential array on the side wall. There is a space between the top end of the spraying plate (291) and the bottom end of the inner side of the lid (37). Multiple groups of holes are opened at the bottom end of the spraying plate (291) and are fixedly connected with liquid spraying heads (292).

9. The tail gas absorption device and usage method for calcium chloride production according to claim 8, characterized in that: Holes are opened at the top ends of the lid (37) and the spraying plate (291), and a rotating rod (34) is rotatably connected. Multiple groups of T-shaped clamping grooves (35) with different depths are opened in a circumferential array on the outer side wall of the rotating rod (34). The T-shaped clamping blocks (293) are fitted with the T-shaped clamping grooves (35). Adsorption boxes (36) are detachably connected to the inner sides of the multiple groups of T-shaped clamping grooves (35). Porous materials are placed inside the multiple groups of adsorption boxes (36). The multiple groups of adsorption boxes (36) are placed obliquely. A transmission shaft (32) is rotatably connected to the top end of the lid (37). A motor (31) is arranged at the top end of the transmission shaft (32). A transmission strip (33) is connected between the side wall of the top end of the rotating rod (34) and the outer side wall of the transmission shaft (32).

10. The tail gas absorption device and its usage method for calcium chloride production according to claim 6, characterized in that: The front end of the box body (1) is provided with multiple groups of openings and is detachably connected with a drawer (11). Absorbent liquid is contained inside each of the multiple groups of drawers (11). Holes are formed in the outer side walls of the first shell (21) and the spraying chamber (22), and an air outlet pipe (13) is fixedly connected thereto. A solenoid valve (12) is rotatably connected to the inner side of the left end of the air outlet pipe (13).

Images