Recovery treatment apparatus for trichloroethane in sucralose production

Abstract

A recovery treatment apparatus for trichloroethane in sucralose production. The rotation of an output shaft of a motor (7) drives multiple gas suction assemblies (31) to rotate, so that a negative pressure environment is formed, and the transmission of tail gas from the bottom of a water washing tower (1) into a gas guide pipe (2) is accelerated; and at this time, multiple atomizing nozzles (19) spray mist and the mist is sprayed to the tail gas passing through a sieve plate (23), then HCl gas in the tail gas is absorbed when in contact with water, thereby achieving the effect of purifying toxic gas HCl. Along with the rotation of a rotating rod (10), a collar (12) further drives L-shaped connecting rods (14) and turning blocks (15) to turn filter materials, so that collision and displacement occur between the filter materials; and at this time, particulate impurities adsorbed on the surfaces of the filter materials are cleaned under the flow of water vapor, and meanwhile, the vibration generated by dynamically moving filter materials can also cause the adsorbed particulate impurities to be shaken off. Thus, the continuous purification and adsorption effect of filter materials is improved, and the service cycle of filter materials can be prolonged at the same time.

Description

A device for recovering and treating trichloroethane in sucralose production Technical Field

[0001] The present invention relates to the field of trichloroethane recovery and treatment, and more particularly to a device for recovering and treating trichloroethane in sucralose production. Background Art

[0002] Currently, my country's sucrose supply exceeds demand, and prices are on a downward trend. Producing high-tech, high-value-added sucralose products from sucrose to meet the people's living and health needs has important social significance and economic value. Due to its excellent quality, sucralose, while technically challenging to produce, has broad prospects for development. Technical issues

[0003] During the recovery process of trichloroethane produced in sucralose production, it is necessary to remove the HCl toxic gas and particulate impurities in the tail gas of sucralose. Since HCl gas is easily soluble in water and particulate impurities are easily adsorbed, it is generally adopted to pass through a water scrubber to purify the HCl toxic gas and particulate impurities carried in the tail gas. The water scrubber in the prior art is composed of a tray, a reboiler, and a condenser. It is mainly used to roughly separate the toxic gas and particulate impurities in the tail gas. The upper water layer is used to remove the toxic gas and particulate impurities in the tail gas. The separation and absorption are carried out by mist spraying and adsorption of the lower filter material. When the sewage carrying particulate impurities and HCl gas passes through the filter material, the filter material is in a static position, resulting in a limited range of surface absorption, causing the separation and removal effect of toxic gases and particulate impurities to continue to decrease. At the same time, the spray water that absorbs HCl gas cannot fully absorb HCl gas in the spray state and will be discharged from the water cooling tower, resulting in the filter material and spray water being difficult to be fully utilized for toxic gases and particulate impurities and needing to be replenished, resulting in poor separation and removal effect and high cost. Technical Solutions

[0004] 1. Technical problems to be solved

[0005] In response to the problems existing in the prior art, the present invention aims to provide a device for recovering and treating trichloroethane in sucralose production. The device can realize the rotation of the motor output shaft, drive multiple air suction components to rotate, form a negative pressure environment, accelerate the transmission of exhaust gas from the bottom of the water washing tower into the air guide pipe, and then multiple atomizing nozzles spray mist to spray the exhaust gas passing through the sieve plate. At this time, the HCl gas in the exhaust gas will be absorbed by water, thereby achieving the effect of purifying the HCl of the toxic gas. As the rotating rod rotates, the collar will also drive the L-shaped connecting rod and the flipping block to flip the filter material, causing collision and displacement between the filter materials. At this time, particulate impurities adsorbed on the surface of the filter material will be cleaned by the flow of water vapor. At the same time, the vibration generated by the dynamically moving filter material will also shake off the adsorbed particulate impurities, thereby improving the continuous purification and adsorption effect of the filter material and extending the service life of the filter material.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A device for recovering and processing trichloroethane in sucralose production includes a water scrubber, an air duct, and an exhaust gas drying device. The two ends of the air duct are respectively connected to the top of the water scrubber and the air inlet pipe of the exhaust gas drying device. The bottom end of the water scrubber is fixedly connected to a plurality of support legs, and a motor is fixedly installed at the center of the bottom. The output shaft of the motor passes through the water scrubber and is fixedly connected to a rotating rod. The inner wall of the water scrubber is installed with a plurality of sieve plates, and the inner wall of the sieve plate is fixedly connected to an annular tube, and the annular tube is filled with filter material for adsorbing particulate impurities. The rotating rod passes through the plurality of annular tubes and is rotatably connected to the annular tubes. The annular tubes are installed with a plurality of purification components corresponding to the sieve plates. The purification components include a sleeve, and the sleeve is fixed on the sleeve. The filter bag is connected with the filter bag of the filter bag, and the filter bag has two L-shaped connecting rods at the bottom, and the L-shaped connecting rod has a plurality of flip blocks fixedly connected to the bottom of the filter bag, and the bottom end of the flip block is inserted into the upper layer of the filter material. The bottom of the annular tube is connected with a plurality of atomizing nozzles adapted to its contour, and the nozzles of the plurality of atomizing nozzles are relatively arranged. The tops of the plurality of annular tubes are connected with connecting pipes, and the end of the connecting pipe away from the annular tube is connected to the water washing tower, and the end extending outward is connected to the water inlet pipe. The water inlet pipe is fixedly connected to the outer wall of the water washing tower, and the top of the water inlet pipe is connected with a hose, and the hose is connected to the external water circulation system. The outer wall of the water washing tower is connected with a It is connected with a plurality of feed pipes for replacing filter materials, and the plurality of feed pipes are respectively arranged corresponding to the plurality of sieve plates. The bottom end of the outer wall of the water washing tower is connected with an intake pipe, and the intake pipe is communicated with the external tail gas intake pipe. First, after the filter material is filled and leveled, the plurality of feed pipes are closed, and the water circulation system is started for water supply, and the intake pipe is opened at the same time. At this time, the tail gas will enter the water washing tower through the intake pipe for impurity adsorption and HCI gas absorption and purification. At this time, the motor is started, and the output shaft of the motor will drive the rotating rod to rotate. When the rotating rod rotates, it will drive the plurality of intake components to rotate, forming a negative pressure environment, accelerating the transmission of the tail gas from the bottom of the water washing tower into the air guide pipe, and finally drying and discharging in the tail gas drying equipment. In this process, the tail gas continues to pass through the plurality of sieve plates. Plate, the filter material on the sieve plate will adsorb impurities in the exhaust gas and purify the exhaust impurities. At the same time, the water flow in the annular tube will be sprayed out through multiple atomizing nozzles to spray the exhaust gas passing through the sieve plate. At this time, the HCl gas in the exhaust gas will be absorbed by the water, thereby achieving the effect of purifying the HCl of the toxic gas. As the rotating rod rotates, the collar will also drive the L-shaped connecting rod and the flipping block to flip the filter material, causing collision and displacement between the filter materials. At this time, the particulate impurities adsorbed on the surface of the filter material will be cleaned under the flow of water vapor. At the same time, the vibration generated by the dynamically moving filter material will also shake off the adsorbed particulate impurities, thereby improving the continuous purification and adsorption effect of the filter material. At the same time, it can extend the service life of the filter material and reduce the material cost and labor cost of replacing the filter material.

[0009] Furthermore, the air intake assembly includes a fixed box and a rotating blade, one end of the rotating blade is slidably connected to the fixed box, the end of the fixed box away from the rotating blade is fixedly connected to the outer wall of the ring, and the end of the rotating blade located in the fixed box is fixedly connected to the inner wall of the fixed box with multiple second springs. Through the above arrangement, when the speed of the ring increases, the rotating blade moves outward with the centrifugal force and stretches the rotating blade, thereby ultimately increasing the rotation profile and area of ​​the air intake assembly, improving the efficiency of negative pressure suction of exhaust gas, and enhancing the absorption and purification efficiency of exhaust gas.

[0010] Furthermore, an HCl concentration sensor is installed on one of the L-shaped connecting rods in each group of the purification components. The HCl concentration sensor is connected to an external controller. The HCl gas concentration at each layer of the annular tube is detected by the HCl concentration sensor. When the gas concentration exceeds the warning value, the electromagnet on the L-shaped connecting rod is activated, thereby attracting the corresponding magnetic block at the bottom to bulge upward, and cooperating with the flipping effect of the flipping block to achieve the effect of flipping the layers up and down, thereby improving the adsorption and cleaning effects of the filter material.

[0011] Furthermore, a water level sensor is installed on the L-shaped connecting rod away from the HCI concentration sensor in each group of the purification components. The water level sensor is connected to an external controller. Through the setting of the water level sensor, the water level at the top of each layer of the annular pipe can be monitored, and an early warning signal can be issued when the water level is dangerous, so as to avoid the problem of spray water accumulation overflowing the feed pipe when a large area of ​​​​blockage occurs in the annular pipe.

[0012] Furthermore, a second slide groove is provided on the inner wall of multiple drainage holes on the annular tube, and one end of each of the second slide grooves is close to the limit groove adjacent to it. A spike block is slidably connected in the second slide groove, and the spike block is made of magnetic material. One end of the spike block close to the limit groove is fixedly connected to the inner wall of the slot with a first spring. Through the above arrangement, when the magnetic block is attracted by the L-shaped connecting rod and moves upward, the relative distance between the L-shaped connecting rod and the spike block becomes larger, thereby reducing the magnetic attraction force on the spike block, and then causing the spike block to extend outward under the elasticity of the compressed first spring. If there is a blockage problem in the drainage hole, the blockage can be broken by the intermittent rise of the magnetic block and the intermittent expansion and contraction of the spike block, thereby solving the blockage problem, improving the efficiency of exhaust gas passing through the annular tube, and enhancing the absorption and purification effect.

[0013] Furthermore, a sleeve is sleeved on the bottom end of the rotating rod, the bottom of the sleeve is fixedly connected to the bottom of the inner wall of the water washing tower, and the top of the sleeve is set to a truncated cone shape and is made of stainless steel. Through the above setting, the spray water can be prevented from seeping out from the connection between the motor output shaft, the bottom end of the rotating rod and the through-hole of the water washing tower, thereby enhancing the sealing effect of the water washing tower and extending the service life of the rotating rod.

[0014] Furthermore, the bottom of the inner wall of the water washing tower is configured to be downwardly inclined, and a drain pipe is connected through the bottom of the inner wall of the water washing tower, and one end of the drain pipe extending outside the water washing tower is connected to an external water circulation system. Through the above configuration, it is possible to conveniently collect spray water, and utilize the water circulation system to spray the spray water that has failed to absorb saturated HCl again through the water inlet pipe and the annular pipe, thereby improving the effect of absorbing HCl and saving water resources.

[0015] Furthermore, the bottom end of the flip block is set to be conical, and the bottom end of the flip block is located between two adjacent magnetic blocks. Through this setting, it is convenient for the magnetic block to perform telescopic movement and also convenient for the flip block to flip the upper filter material.

[0016] Furthermore, a plurality of traction ropes for accelerating the gathering of mist are fixedly connected to the lower surface of the rotating blade, and a cooling ball is fixedly connected to the bottom of the plurality of traction ropes. Through the above arrangement, it can be achieved that during the rotation of the rotating blade, the plurality of traction ropes can continuously absorb the mist and use centrifugal force to throw it off, thereby accelerating the descent of the mist, allowing the spray water that absorbs HCl to fall, making it convenient for new spray water to fill the cavity and react quickly, and the thrown-off water droplets have a better cleaning effect than the mist.

[0017] Furthermore, the cooling ball is formed by bonding two hollow shells together, and a plurality of through holes are provided on the surface of the cooling ball. The cooling ball is filled with potassium nitrate balls. The potassium nitrate balls absorb heat when they come into contact with water, thereby reducing the temperature of the surrounding environment and accelerating the condensation of mist into water droplets. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The rotation of the motor output shaft drives multiple suction components to rotate, forming a negative pressure environment, accelerating the transmission of exhaust gas from the bottom of the water scrubber into the air guide pipe. At this time, multiple atomizing nozzles spray mist to spray the exhaust gas passing through the sieve plate. At this time, the HCI gas in the exhaust gas will be absorbed by water, achieving the effect of purifying the HCI of toxic gases. As the rotating rod rotates, the collar will also drive the L-shaped connecting rod and the flipping block to flip the filter material, causing collision and displacement between the filter materials. At this time, the particulate impurities adsorbed on the surface of the filter material will be cleaned under the flow of water vapor. At the same time, the vibration generated by the dynamic movement of the filter material will also shake off the adsorbed particulate impurities. Quality, improve the continuous purification and adsorption effect of the filter material, at the same time it can extend the service life of the filter material and reduce the material cost and labor cost of replacing the filter material. During this period, the HCI concentration sensor can detect the HCI concentration, control the rotation speed of the motor output shaft through the external controller, and control the suction efficiency. The water level sensor can detect the blockage and control the safe water level. During this period, the cooperation of the magnetic block and the spike block can help solve the blockage problem and improve the exhaust gas passing efficiency. The traction rope and cooling ball can accelerate the condensation of the mist, accelerate the landing of the spray water, clean the filter material, and improve the fusion efficiency of HCI and spray water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic structural diagram of the present invention;

[0021] FIG2 is a schematic cross-sectional view of the structure of the water washing tower in the present invention;

[0022] FIG3 is a schematic diagram of the three-dimensional structure of the water washing tower in the present invention;

[0023] FIG4 is a schematic cross-sectional view of a portion of the structure of the air intake assembly of the present invention;

[0024] FIG5 is a schematic diagram of a partial three-dimensional structure of a purification component in the present invention;

[0025] FIG6 is a schematic diagram of the three-dimensional structure of the annular tube, atomizing nozzle and magnetic block in the present invention;

[0026] FIG7 is a schematic cross-sectional view of a portion of the structure of the sieve plate of the present invention.

[0027] Description of the numbers in the figure:

[0028] 1. Water scrubber; 2. Air duct; 3. Tail gas drying equipment; 4. Feed pipe; 5. Intake pipe; 6. Support leg; 7. Motor; 8. Drain pipe; 9. Water inlet pipe; 10. Rotating rod; 11. Casing; 12. Ring; 13. Rotating blade; 14. L-shaped connecting rod; 15. Flip block; 16. Water level sensor; 17. HCI concentration sensor; 18. Ring pipe; 19. Atomizing nozzle; 20. Magnetic block; 21. Traction rope; 22. Cooling ball; 23. Sieve plate; 24. Limiting groove; 25. Second slide; 26. Spike block; 27. First spring; 28. Second spring; 29. ​​Fixing box; 30. Purification component; 31. Intake component. Modes for Carrying Out the Invention

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances. Example 1:

[0032] Please refer to Figures 1-7. A device for recovering and treating trichloroethane in the production of sucralose includes a water scrubber 1, an air duct 2, and an exhaust gas drying device 3. The two ends of the air duct 2 are respectively connected to the top of the water scrubber 1 and the air inlet pipe of the exhaust gas drying device 3. The bottom end of the water scrubber 1 is fixedly connected to a plurality of support legs 6, and a motor 7 is fixedly installed at the center of the bottom. The output shaft of the motor 7 passes through the water scrubber 1 and is fixedly connected to a rotating rod 10. A plurality of sieve plates 23 are installed on the inner wall of the water scrubber 1. An annular tube 18 is fixedly connected to the inner wall of the sieve plate 23, and the annular tube 18 is filled with a filter material for adsorbing particulate impurities. The rotating rod 10 passes through the plurality of annular tubes 18 and is rotatably connected to the annular tubes 18. The annular tubes 18 are installed with a plurality of purification groups corresponding to the sieve plates 23. Part 30, the purification component 30 includes a collar 12, the collar 12 is sleeved and fixed on the collar 12, and a plurality of suction components 31 for negative pressure suction are provided on the collar 12, and the bottom of the collar 12 is fixedly connected to two symmetrically arranged L-shaped connecting rods 14, and the bottom of the L-shaped connecting rod 14 is fixedly connected to a plurality of flip blocks 15, and the bottom end of the flip block 15 is inserted into the upper layer of the filter material, and the bottom of the annular tube 18 is connected with a plurality of atomizing nozzles 19 adapted to its contour, and the nozzles of the plurality of atomizing nozzles 19 are relatively arranged, and the tops of the plurality of annular tubes 18 are connected with connecting pipes, and the end of the connecting pipe away from the annular tube 18 is connected to the water washing tower 1, and the end extending outward is connected to the water inlet pipe 9, and the water inlet pipe 9 is fixedly connected to the outer wall of the water washing tower 1 Then, the top of the water inlet pipe 9 is connected with a hose, and the hose is connected to the external water circulation system. The outer wall of the water washing tower 1 is connected with a plurality of feed pipes 4 for replacing the filter material, and the plurality of feed pipes 4 are respectively arranged corresponding to the plurality of sieve plates 23. The bottom end of the outer wall of the water washing tower 1 is connected with an intake pipe 5, and the intake pipe 5 is connected to the external exhaust gas intake pipe. First, after the filter material is filled and leveled, the plurality of feed pipes 4 are closed, and the water circulation system is started for water supply, and the intake pipe 5 is opened at the same time. At this time, the exhaust gas will enter the water washing tower 1 through the intake pipe 5 for impurity adsorption and HCI gas absorption purification. At this time, the motor 7 is started, and the output shaft of the motor 7 will drive the rotating rod 10 to rotate. When the rotating rod 10 rotates, it will drive the plurality of intake components 31 to rotate. , forming a negative pressure environment, accelerating the exhaust gas from the bottom of the water washing tower 1 to the air guide pipe 2, and finally drying and discharging in the exhaust gas drying equipment 3. During this process, the exhaust gas continues to pass through multiple sieve plates 23. The filter material on the sieve plate 23 will adsorb impurities in the exhaust gas and purify the exhaust impurities. At the same time, the water flow in the annular pipe 18 will be sprayed through multiple atomizing nozzles 19 to spray the exhaust gas passing through the sieve plate 23. At this time, the HCI gas in the exhaust gas will be absorbed by water, thereby achieving the effect of purifying the HCl of the toxic gas. As the rotating rod 10 rotates, the collar 12 will also drive the L-shaped connecting rod 14 and the flip block 15 to flip the filter material, causing collision and displacement between the filter materials. At this time, the particulate impurities adsorbed on the surface of the filter material will be cleaned under the flow of water vapor.At the same time, the vibration generated by the dynamic movement of the filter material will also shake off the adsorbed particulate impurities, improving the continuous purification and adsorption effect of the filter material. At the same time, it can extend the service life of the filter material and reduce the material cost and labor cost of replacing the filter material.

[0033] The air intake assembly 31 includes a fixed box 29 and a rotating blade 13. One end of the rotating blade 13 is slidably connected to the fixed box 29, and the end of the fixed box 29 away from the rotating blade 13 is fixedly connected to the outer wall of the ring 12. The end of the rotating blade 13 located in the fixed box 29 is fixedly connected to the inner wall of the fixed box 29 with multiple second springs 28. Through the above arrangement, when the rotation speed of the ring 12 increases, the rotating blade 13 moves outward with the centrifugal force and stretches the rotating blade 13, thereby increasing the rotation profile and area of ​​the air intake assembly 31, improving the efficiency of negative pressure suction of exhaust gas, and enhancing the absorption and purification efficiency of exhaust gas.

[0034] An HCl concentration sensor 17 is mounted on one of the L-shaped connecting rods 14 within each purification assembly 30. This HCl concentration sensor 17 is connected to an external controller and detects the HCl gas concentration at each annular tube 18. When the gas concentration exceeds a warning value, the electromagnet on the L-shaped connecting rod 14 is activated, thereby attracting the corresponding magnetic block 20 at the bottom to bulge upward. This, combined with the flipping effect of the flipping block 15, achieves an up-and-down flipping effect, thereby improving the adsorption and cleaning effects of the filter material.

[0035] A water level sensor 16 is installed on the L-shaped connecting rod 14 in each purification assembly 30, away from the HCl concentration sensor 17. The water level sensor 16 is connected to an external controller. Through the setting of the water level sensor 16, the water level at the top of each layer of the annular pipe 18 can be monitored. When the water level is dangerous, an early warning signal is issued to prevent the problem of spray water accumulation and overflowing the feed pipe 4 when a large area of ​​the annular pipe 18 is blocked.

[0036] A second slide groove 25 is provided on the inner wall of multiple drainage holes on the annular tube 18, and one end of multiple second slide grooves 25 is close to the limit groove 24 adjacent to it. A spike block 26 is slidably connected in the second slide groove 25, and the spike block 26 is made of magnetic material. One end of the spike block 26 close to the limit groove 24 is fixedly connected to the inner wall of the slot with a first spring 27. Through the above arrangement, when the magnetic block 20 is attracted by the L-shaped connecting rod 14 and moves upward, the relative distance between the L-shaped connecting rod 14 and the spike block 26 becomes larger, thereby reducing the magnetic attraction force on the spike block 26, and then causing the spike block 26 to extend outward under the elasticity of the compressed first spring 27. If there is a blockage problem in the drainage hole, at this time, with the intermittent rise of the magnetic block 20 and the intermittent expansion and contraction of the spike block 26, the blockage can be broken, the blockage problem can be solved, the efficiency of exhaust gas passing through the annular tube 18 can be improved, and the absorption and purification effect can be enhanced.

[0037] The bottom end of the rotating rod 10 is sleeved with a sleeve 11, the bottom of the sleeve 11 is fixedly connected to the bottom of the inner wall of the water washing tower 1, and the top of the sleeve 11 is set to a truncated cone shape and is made of stainless steel. Through the above setting, the spray water can be prevented from seeping out from the connection between the output shaft of the motor 7, the bottom end of the rotating rod 10 and the through-hole of the water washing tower 1, thereby enhancing the sealing effect of the water washing tower 1 and extending the service life of the rotating rod 10.

[0038] The bottom of the inner wall of the water washing tower 1 is set to a downward inclined shape. A drain pipe 8 is connected to the bottom of the inner wall of the water washing tower 1, and one end of the drain pipe 8 extending outside the water washing tower 1 is connected to the external water circulation system. Through the above arrangement, it is convenient to collect the spray water, and the water circulation system is used to spray the spray water that has not absorbed the saturated HCl again through the water inlet pipe 9 and the annular pipe 18, thereby improving the effect of absorbing HCl and saving water resources.

[0039] The bottom end of the flip block 15 is set to be conical, and the bottom end of the flip block 15 is located between two adjacent magnetic blocks 20. Through this setting, it is convenient for the magnetic block 20 to perform telescopic movement and also convenient for the flip block 15 to flip the upper filter material.

[0040] A plurality of traction ropes 21 for accelerating the gathering of mist are fixedly connected to the lower surface of the rotating blade 13, and a cooling ball 22 is fixedly connected to the bottom of the plurality of traction ropes 21. Through the above arrangement, it can be achieved that during the rotation of the rotating blade 13, the plurality of traction ropes 21 can continuously absorb the mist and use centrifugal force to throw it off, thereby accelerating the descent of the mist, allowing the spray water that absorbs HCl to fall, facilitating the new spray water to fill the cavity and react quickly, and the thrown-off water droplets have a better cleaning effect than the mist.

[0041] The cooling ball 22 is made of two hollow shells bonded together. A plurality of through holes are provided on the surface of the cooling ball 22. The cooling ball 22 is filled with potassium nitrate balls. The potassium nitrate balls in the cooling ball 22 absorb heat when they come into contact with water, thereby reducing the temperature of the surrounding environment and accelerating the condensation of mist into water droplets.

[0042] Working principle: When the device is in use, first, after the filter material is filled and leveled, multiple feed pipes 4 are closed, and the water circulation system is started for water supply, and the intake pipe 5 is opened at the same time. At this time, the exhaust gas will enter the water washing tower 1 through the intake pipe 5 for impurity adsorption and HCI gas absorption purification. At this time, the motor 7 is started, and the output shaft of the motor 7 will drive the rotating rod 10 to rotate. When the rotating rod 10 rotates, it will drive multiple intake components 31 to rotate, forming a negative pressure environment, accelerating the exhaust gas from the bottom of the water washing tower 1 to the air guide pipe 2, and finally dried and discharged in the exhaust gas drying equipment 3. During this process, the exhaust gas continues to pass through multiple sieve plates 23, and the filter material on the sieve plate 23 will adsorb impurities in the exhaust gas, purifying the exhaust gas. Gas impurities, at the same time, the water flow in the annular tube 18 will be sprayed out through multiple atomizing nozzles 19 to spray the exhaust gas passing through the sieve plate 23. At this time, the HCl gas in the exhaust gas will be absorbed by water, thereby achieving the effect of purifying the HCl of the toxic gas. As the rotating rod 10 rotates, the collar 12 will also drive the L-shaped connecting rod 14 and the flip block 15 to flip the filter material, causing collision and displacement between the filter materials. At this time, the particulate impurities adsorbed on the surface of the filter material will be cleaned under the flow of water vapor. At the same time, the vibration generated by the dynamically moving filter material will also shake off the adsorbed particulate impurities, thereby improving the continuous purification and adsorption effect of the filter material. At the same time, it can extend the service life of the filter material and reduce the material cost and labor cost of replacing the filter material.

[0043] During this period, when the rotation speed of the ring 12 increases, the rotating blades 13 move outward with the centrifugal force and stretch the rotating blades 13, thereby increasing the rotation profile and area of ​​the suction component 31, improving the efficiency of negative pressure suction of exhaust gas, and enhancing the absorption and purification efficiency of exhaust gas.

[0044] At the same time, the HCl gas concentration at each layer of the annular tube 18 is detected by the HCl concentration sensor 17. When the gas concentration exceeds the warning value, the electromagnet on the L-shaped connecting rod 14 is activated, thereby attracting the corresponding magnetic block 20 at the bottom to bulge upward, and cooperating with the flipping effect of the flipping block 15 to achieve the effect of flipping the layers up and down, thereby improving the adsorption and cleaning effects of the filter material. Through the setting of the water level sensor 16, the water level at the top of each layer of the annular tube 18 can be monitored, and an early warning signal is issued when the water level is dangerous, so as to avoid the problem of spray water accumulation overflowing the feed pipe 4 when a large area of ​​​​blockage occurs in the annular tube 18.

[0045] At the same time, when the magnetic block 20 is attracted by the L-shaped connecting rod 14 and moves upward, the relative distance between the L-shaped connecting rod 14 and the spike block 26 becomes larger, thereby reducing the magnetic attraction force on the spike block 26, and then causing the spike block 26 to extend outward under the elasticity of the compressed first spring 27. If there is a blockage problem in the drainage hole, at this time, with the intermittent rise of the magnetic block 20 and the intermittent expansion and contraction of the spike block 26, the blockage can be broken, the blockage problem can be solved, the efficiency of the exhaust gas passing through the annular tube 18 can be improved, and the absorption and purification effect can be enhanced.

[0046] It is worth noting that during the rotation of the rotating blades 13, multiple traction ropes 21 can continuously absorb mist and use centrifugal force to throw it off, accelerating the descent of the mist, allowing the spray water that absorbs HCl to fall, making it convenient for new spray water to fill the cavity and react quickly. The dropped water droplets have a better cleaning effect than the mist, and the potassium nitrate balls in the cooling ball 22 absorb heat when encountering water, which can reduce the temperature of the surrounding environment and accelerate the condensation of the mist into water droplets.

[0047] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A device for recovering and treating trichloroethane in the production of sucralose, comprising a water washing tower (1), an air guide pipe (2) and an exhaust gas drying device (3), wherein the two ends of the air guide pipe (2) are respectively connected to the top of the water washing tower (1) and the air inlet pipe of the exhaust gas drying device (3), and characterized in that: The bottom end of the water washing tower (1) is fixedly connected to a plurality of supporting legs (6), and a motor (7) is fixedly installed at the center of the bottom. The output shaft of the motor (7) passes through the water washing tower (1) and is fixedly connected to a rotating rod (10). The inner wall of the water washing tower (1) is installed with a plurality of sieve plates (23). The inner wall of the sieve plate (23) is fixedly connected to an annular tube (18), and the annular tube (18) is filled with a filter material for adsorbing particulate impurities. The rotating rod (10) passes through the plurality of annular tubes (18) and is rotatably connected to the annular tubes (18). The annular tubes (18) are installed with a plurality of purification components (30) corresponding to the sieve plates (23). The purification components (30) include a sleeve (12), the sleeve (12) is sleeved and fixed on the sleeve (12), and the sleeve (12) is provided with a plurality of suction components (31) for negative pressure suction. The bottom of the sleeve (12) is fixedly connected to two symmetrically arranged L-shaped connecting rods (14). The L-shaped connecting rods (14) ) is fixedly connected to the bottom of the annular tube (18) with a plurality of flip blocks (15), and the bottom ends of the flip blocks (15) are inserted into the upper layer of the filter material; the bottom of the annular tube (18) is connected to a plurality of atomizing nozzles (19) that match the contour thereof, and the nozzles of the plurality of atomizing nozzles (19) are arranged opposite to each other; the tops of the plurality of annular tubes (18) are connected to connecting pipes, one end of the connecting pipes away from the annular tube (18) is connected to the washing tower (1), and the other end extending outward is connected to the water inlet The water inlet pipe (9) is fixedly connected to the outer wall of the water washing tower (1), the top end of the water inlet pipe (9) is connected through a hose, and the hose is connected to an external water circulation system, the outer wall of the water washing tower (1) is connected through a plurality of feed pipes (4) for replacing filter materials, and the plurality of feed pipes (4) are respectively arranged corresponding to the plurality of sieve plates (23), and the bottom end of the outer wall of the water washing tower (1) is connected through an air intake pipe (5), and the air intake pipe (5) is connected to an external exhaust gas intake pipe.

2. The device for recovering trichloroethane in sucralose production according to claim 1, characterized in that: The air suction assembly (31) comprises a fixed box (29) and a rotating blade (13); one end of the rotating blade (13) is slidably connected in the fixed box (29); one end of the fixed box (29) away from the rotating blade (13) is fixedly connected to the outer wall of the collar (12); and one end of the rotating blade (13) located in the fixed box (29) is fixedly connected to the inner wall of the fixed box (29) by a plurality of second springs (28).

3. The device for recovering trichloroethane in sucralose production according to claim 1, characterized in that: An HCI concentration sensor (17) is installed on one of the L-shaped connecting rods (14) in each group of the purification components (30), and the HCI concentration sensor (17) is connected to an external controller.

4. The device for recovering trichloroethane in sucralose production according to claim 3, characterized in that: A water level sensor (16) is installed on the L-shaped connecting rod (14) away from the HCl concentration sensor (17) in each group of the purification components (30), and the water level sensor (16) is connected to an external controller.

5. The device for recovering trichloroethane in sucralose production according to claim 4, characterized in that: A second slide groove (25) is provided on the inner wall of the plurality of drainage holes on the annular tube (18), and one end of the plurality of second slide grooves (25) is close to the limiting groove (24) adjacent thereto, a spike block (26) is slidably connected in the second slide groove (25), and the spike block (26) is made of magnetic material, and one end of the spike block (26) close to the limiting groove (24) is fixedly connected to the inner wall of the slot with a first spring (27).

6. The device for recovering trichloroethane in sucralose production according to claim 1, characterized in that: The bottom end of the rotating rod (10) is sleeved with a sleeve (11), the bottom of the sleeve (11) is fixedly connected to the bottom of the inner wall of the water washing tower (1), and the top of the sleeve (11) is configured in a truncated cone shape and is made of stainless steel.

7. The device for recovering trichloroethane in sucralose production according to claim 1, characterized in that: The bottom of the inner wall of the water washing tower (1) is arranged in a downwardly inclined shape, a drainage pipe (8) is connected through the bottom of the inner wall of the water washing tower (1), and one end of the drainage pipe (8) extending outside the water washing tower (1) is connected to an external water circulation system.

8. The device for recovering trichloroethane in sucralose production according to claim 1, characterized in that: The bottom end of the flip block (15) is configured to be conical, and the bottom end of the flip block (15) is located between two adjacent magnetic blocks (20).

9. The device for recovering trichloroethane in sucralose production according to claim 2, characterized in that: A plurality of traction ropes (21) for accelerating the gathering of mist are fixedly connected to the lower surface of the rotating blade (13), and a cooling ball (22) is fixedly connected to the bottom of the plurality of traction ropes (21).

10. The device for recovering trichloroethane in sucralose production according to claim 10, characterized in that: The cooling ball (22) is formed by bonding two hollow shells together; a plurality of through holes are provided on the surface of the cooling ball (22); and potassium nitrate balls are filled in the cooling ball (22).

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