Device applied to condensing and recycling extraction agent

Abstract

The utility model provides a device applied to condensing and recycling an extracting agent, and aims to solve the problem that the recycling efficiency is low due to the fact that the extracting agent is recycled in a reflux condensation mode in the prior art, the following scheme is provided: the device comprises a transfer tank, a condensing box and a recycling box, and the transfer tank and the condensing box are arranged above the recycling box; and the same demister is arranged between the inner walls of the transfer tank, the transfer tank communicates with the condensation box through the same connecting pipe, and a water baffle is fixedly installed on the left side of the inner wall of the top of the condensation box. The extraction agent in a hot gas state is driven to sequentially pass through the demister in the transfer tank, the water baffle in the condensation tank and the condensation pipe under the action of the fan, the demister intercepts large-volume dropping liquid carried in the extraction agent for the first time, the water baffle intercepts small-volume dropping liquid carried in the extraction agent, and the condensation pipe condenses the gaseous extraction agent into liquid. And the recovery efficiency of the extraction agent is improved through multi-stage interception.

Description

Technical Field

[0001] The utility model relates to the technical field of extractant recovery, in particular to a device used for condensation recovery of extractants. Background Art

[0002] Extractant condensation recovery is a solvent recovery technology primarily used to recover solvents from organic waste gases. The basic principle of extraction is to utilize the difference in solubility or partition coefficient between two immiscible solvents to transfer a solute from one solvent to another. Post-use treatment of the extractant is a crucial step. Because extractants often carry certain toxicities or environmental risks, they must be promptly recovered after use to avoid environmental pollution caused by indiscriminate discharge.

[0003] In existing technologies, the recovery of the extractant is mainly carried out through condensation reflux. The basic principle of this method is to convert the extractant from gaseous state into liquid state by lowering the temperature, thereby achieving recovery. However, although the condensation recovery method has achieved the recovery of the extractant to a certain extent, its recovery efficiency still has a large room for improvement. Therefore, we propose a device for condensation recovery of the extractant to solve this problem. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes a device for condensing and recovering an extractant to more accurately solve the above problems.

[0005] The utility model is achieved through the following technical solutions:

[0006] The utility model proposes a device for condensing and recovering an extractant, comprising a transfer tank, a condensation box and a recovery box, wherein the transfer tank and the condensation box are both arranged above the recovery box, a common demister is provided between the inner walls of the transfer tank, a common connecting pipe is connected between the transfer tank and the condensation box, a water baffle is fixedly installed on the left side of the top inner wall of the condensation box, a plurality of condensation pipes are fixedly installed on the top inner wall of the condensation box, an exhaust pipe is connected to the right side of the condensation box, and fans are provided in both the exhaust pipe and the connecting pipe.

[0007] Furthermore, the bottom of the transfer tank is connected to drain pipe 1, and the bottom of the condensation box is connected to drain pipe 2. Both drain pipe 1 and drain pipe 2 are connected to the recovery box. Both drain pipe 1 and drain pipe 2 are provided with air shutoff devices. A baffle is fixedly installed on the inner wall of the transfer tank. The outside of the transfer tank is connected to the air inlet pipe, and the baffle is located above the connection between the air inlet pipe and the transfer tank.

[0008] Furthermore, a plurality of horizontal plates are vertically slidably installed in the condensation box, short rods are fixedly installed on both sides of the left and right sides of the horizontal plates, a collar is fixedly installed on one end of the short rod, and the collar is slidably sleeved on the outside of the corresponding condensation tube.

[0009] Furthermore, multiple vertical plates are slidably installed on the front and rear sides of the top of the condensation box, and the tops of the multiple vertical plates on the same side are fixedly installed with the same connecting plate, and the horizontal plate is fixedly sleeved on the outer sides of the corresponding two vertical plates. A worm is rotatably installed on the top inner wall of the condensation box, and an L-shaped plate is fixedly installed on the top of the condensation box. A motor is fixedly installed on the bottom of the L-shaped plate, and the output shaft of the motor is fixedly connected to the top of the worm. Two circular shafts are fixedly installed on the right side of the L-shaped plate, and a worm gear is rotatably sleeved on the outer side of the circular shaft. The worm gear is respectively meshed with the two worm gears, and a cylinder is fixedly installed on the bottom right side of the worm gear. The same rectangular frame is fixedly installed between the two connecting plates, and the cylinder is slidably installed in the rectangular frame.

[0010] Furthermore, the bottom end of the worm extends to the bottom of the condensation box, and a plurality of stirring blades are fixedly installed on the outer side of the worm, and the plurality of stirring blades are arranged in a circle.

[0011] Furthermore, the top of the collar is arranged in an inclined plane, and the multiple collars on the same vertical line are arranged at equal intervals.

[0012] Furthermore, a support frame is fixedly installed on the outer side of the transfer tank, the bottom of the support frame is fixedly connected to the top of the recovery box, and two support legs are fixedly installed on the front and rear sides of the condensation box.

[0013] Furthermore, the left ends of the plurality of condensing tubes are connected to the same connecting tube 1, and the right ends of the plurality of condensing tubes are connected to the same connecting tube 2, and the outer sides of the connecting tube 1 and the connecting tube 2 are both connected to a liquid guide tube.

[0014] The beneficial effects of the utility model are:

[0015] 1. The fan drives the hot extractant through the demister in the transfer tank, the water baffle in the condenser box, and the condenser tube in sequence. The demister initially intercepts large droplets carried by the extractant, the water baffle intercepts small droplets carried by the extractant, and the condenser tube condenses the gaseous extractant into liquid. Multi-stage interception improves the recovery efficiency of the extractant.

[0016] 2. The motor drives the worm to rotate, thereby driving the extractant to flow more evenly in the condensation box, so that the extractant is in full contact with the condenser tube, and the condensation effect is improved; the worm wheel drives multiple horizontal plates to move up and down through the cooperation of the cylinder and the rectangular frame, and drives multiple rings to move up and down to scrape off the dripping liquid on the outside of the condenser tube, preventing the dripping liquid from causing uneven heat transfer, further improving the condensation efficiency, preventing the extractant from being discharged in a gaseous state due to insufficient condensation effect, and improving the recovery efficiency of the extractant. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a device for condensing and recovering an extractant proposed by the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of a device for condensing and recovering an extractant proposed in the present invention;

[0019] Figure 3 for Figure 1 A partial enlarged view of part A;

[0020] Figure 4 for Figure 2 A partial enlarged view of part B.

[0021] The reference numerals are as follows:

[0022] In the figure: 1. Transfer tank; 2. Condensate tank; 3. Recovery tank; 4. Defoamer; 5. Connecting pipe; 6. Water baffle; 7. Condensate pipe; 8. Exhaust pipe; 9. Fan; 10. Drain pipe 2; 11. Air lock; 12. Baffle; 13. Horizontal plate; 14. Ring; 15. Vertical plate; 16. Connecting plate; 17. Worm; 18. L-shaped plate; 19. Motor; 20. Worm gear; 21. Cylinder; 22. Rectangular frame; 23. Stirring blade; 24. Support frame; 25. Connecting tube 1. DETAILED DESCRIPTION

[0023] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0024] Please refer to Figures 1-4 The utility model proposes a device for condensation and recovery of an extractant, comprising a transfer tank 1, a condensation box 2 and a recovery box 3. The transfer tank 1 and the condensation box 2 are both arranged above the recovery box 3. A common demister 4 is arranged between the inner walls of the transfer tank 1. A common connecting pipe 5 is connected between the transfer tank 1 and the condensation box 2. A water baffle 6 is fixedly installed on the left side of the top inner wall of the condensation box 2. A plurality of condensation pipes 7 are fixedly installed on the top inner wall of the condensation box 2. An exhaust pipe 8 is connected to the right side of the condensation box 2. Fans 9 are provided in the exhaust pipe 8 and the connecting pipe 5.

[0025] It should be noted that the demister 4 is a highly efficient gas-liquid separation device, and its core function is to effectively separate the large volume of liquid carried in the gas. When the gas containing the large volume of liquid passes through the wire mesh, due to the blocking and guiding effect of the wire mesh, the liquid will be effectively retained on the wire mesh, while the gas can pass smoothly, thereby realizing gas-liquid separation; the water baffle 6 includes a stainless steel frame and a polyester membrane filter installed in the middle of the frame. The polyester membrane filter has good waterproof performance and can intercept small volume droplets.

[0026] like Figure 2 As shown, the bottom of the transfer tank 1 is connected to a drain pipe 1, and the bottom of the condensation tank 2 is connected to a drain pipe 2 10. Both the drain pipe 1 and the drain pipe 2 10 are connected to the recovery tank 3. Both the drain pipe 1 and the drain pipe 2 10 are provided with an air shutoff device 11. A baffle 12 is fixedly installed on the inner wall of the transfer tank 1. The outside of the transfer tank 1 is connected to an air inlet pipe, and the baffle 12 is located above the connection between the air inlet pipe and the transfer tank 1.

[0027] like Figure 2 and Figure 4 As shown, a plurality of horizontal plates 13 are vertically slidably installed in the condensation box 2, and short rods are fixedly installed on the left and right sides of the horizontal plates 13. A ring 14 is fixedly installed at one end of the short rod, and the ring 14 is slidably sleeved on the outer side of the corresponding condensation tube 7.

[0028] like Figure 2 and Figure 3 As shown, multiple vertical plates 15 are slidably installed on the front and back sides of the top of the condensation box 2, and the tops of the multiple vertical plates 15 on the same side are fixedly installed with the same connecting plate 16. The horizontal plate 13 is fixedly sleeved on the outer sides of the corresponding two vertical plates 15. A worm 17 is rotatably installed on the top inner wall of the condensation box 2, and an L-shaped plate 18 is fixedly installed on the top of the condensation box 2. A motor 19 is fixedly installed on the bottom of the L-shaped plate 18, and the output shaft of the motor 19 is fixedly connected to the top of the worm 17. Two circular shafts are fixedly installed on the right side of the L-shaped plate 18, and a worm gear 20 is rotatably sleeved on the outer side of the circular shaft. The worm 17 is respectively meshed with the two worm gears 20, and a cylinder 21 is fixedly installed on the bottom right side of the worm gear 20. The same rectangular frame 22 is fixedly installed between the two connecting plates 16, and the cylinder 21 is slidably installed in the rectangular frame 22.

[0029] like Figure 2 and Figure 4 As shown, the bottom end of the worm 17 extends to the bottom of the condensation box 2, and a plurality of stirring blades 23 are fixedly installed on the outside of the worm 17. The plurality of stirring blades 23 are arranged in a circle. The stirring blades 23 generate airflow by rotation, breaking the hierarchical structure of the hot air and evenly distributing the hot air from the top of the condensation box 2 to the entire condensation box 2.

[0030] The top of the ring 14 is set in an inclined surface, and multiple rings 14 on the same vertical line are set at equal intervals. Compared with a flat surface or a convex surface, the inclined surface design can reduce the resistance encountered by the dripping liquid during the sliding process, and it is not easy to form a phenomenon of water droplets hanging on the wall, further preventing the accumulation of water droplets. The inclined surface allows the ring body to fit more closely to the surface of the condenser tube 7, thereby improving the efficiency and effect of scraping.

[0031] like Figure 1 As shown, a support frame 24 is fixedly installed on the outside of the transfer tank 1, the bottom of the support frame 24 is fixedly connected to the top of the recovery box 3, and two support legs are fixedly installed on the front and back sides of the condensation box 2.

[0032] like Figure 2 and Figure 3 As shown, the left ends of the multiple condensing tubes 7 are connected to the same connecting tube 1 25, and the right ends of the multiple condensing tubes 7 are connected to the same connecting tube 2. The outer sides of the connecting tube 1 25 and the connecting tube 2 are both connected to the liquid guide tube.

[0033] The working principle of the present invention is as follows: the extractant evaporated during the production process is introduced into the transfer tank 1 through the air inlet pipe. At this time, the extractant is in a gaseous state and carries heat. The hot gaseous extractant rises in the transfer tank 1 and passes through the demister 4. The demister 4 initially intercepts the large volume of droplets carried in the extractant. The intercepted large volume of droplets falls along the inner wall of the transfer tank 1 under the action of gravity, and falls into the recovery box 3 through the air lock 11 in the drain pipe 1. The remaining extractant enters the condensation box 2 under the action of the fan 9, and the motor 19 is started at the same time. The extractant first passes through the water baffle 6, which can further intercept the small volume of droplets carried in the extractant, and then passes through multiple condensation tubes 7. The extractant in the hot gas state gathers into droplets at the low temperature of the condensation tube 7. The droplets on the water baffle 6 and the outside of the condensation tube 7 fall and pass through the drain pipe 2 10. The air lock 11 falls into the recovery box 3. The extractant liquid in the recovery box 3 can be put into production again after the impurity removal process, reducing environmental pollution. The output shaft of the motor 19 drives the worm 17 to rotate, thereby driving the multiple stirring blades 23 to rotate to generate airflow, so that the extractant flows more evenly in the condensation box 2, reducing the problem of uneven contact between the condenser 7 and the extractant due to the rising hot air, and improving the condensation effect. The worm 17 drives the two worm gears 20 to rotate. The worm gear 20 drives the two connecting plates 16 and multiple cross plates 13 to move back and forth up and down through the cooperation of the cylinder 21 and the rectangular frame 22, and then drives the multiple rings 14 to move back and forth up and down to scrape off the dripping liquid on the outside of the condenser 7, preventing the dripping from causing uneven heat transfer, further improving the condensation efficiency, and the remaining air is discharged through the exhaust pipe 8.

[0034] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A device for condensing and recovering an extractant, characterized in that: It includes a transfer tank, a condensation box and a recovery box. The transfer tank and the condensation box are both arranged above the recovery box. The same demister is provided between the inner walls of the transfer tank. The transfer tank and the condensation box are connected by the same connecting pipe. A water baffle is fixedly installed on the left side of the top inner wall of the condensation box. A plurality of condensation pipes are fixedly installed on the top inner wall of the condensation box. The right side of the condensation box is connected to an exhaust pipe. Fans are provided in the exhaust pipe and the connecting pipe.

2. The device for condensation recovery of an extractant according to claim 1, characterized in that: The bottom of the transfer tank is connected to a drain pipe 1, and the bottom of the condensation box is connected to a drain pipe 2. Both the drain pipe 1 and the drain pipe 2 are connected to the recovery box. Both the drain pipe 1 and the drain pipe 2 are provided with air shut-off devices. A baffle is fixedly installed on the inner wall of the transfer tank. The outer side of the transfer tank is connected to an air inlet pipe, and the baffle is located above the connection between the air inlet pipe and the transfer tank.

3. The device for condensation recovery of an extractant according to claim 1, characterized in that: A plurality of horizontal plates are vertically slidably installed in the condensation box, short rods are fixedly installed on both sides of the horizontal plates, a collar is fixedly installed on one end of the short rod, and the collar is slidably sleeved on the outer side of the corresponding condensation pipe.

4. The device for condensation recovery of an extractant according to claim 3, characterized in that: A plurality of vertical plates are slidably installed on the front and rear sides of the top of the condensation box, and the tops of the plurality of vertical plates on the same side are fixedly installed with the same connecting plate, and the horizontal plate is fixedly sleeved on the outer sides of the corresponding two vertical plates. A worm is rotatably installed on the top inner wall of the condensation box, and an L-shaped plate is fixedly installed on the top of the condensation box. A motor is fixedly installed on the bottom of the L-shaped plate, and the output shaft of the motor is fixedly connected to the top of the worm. Two circular shafts are fixedly installed on the right side of the L-shaped plate, and a worm gear is rotatably sleeved on the outer side of the circular shaft. The worm gear is respectively meshed with the two worm gears, and a cylinder is fixedly installed on the bottom right side of the worm gear. The same rectangular frame is fixedly installed between the two connecting plates, and the cylinder is slidably installed in the rectangular frame.

5. The device for condensation recovery of an extractant according to claim 4, characterized in that: The bottom end of the worm extends to the bottom of the condensation box, and a plurality of stirring blades are fixedly installed on the outer side of the worm, and the plurality of stirring blades are arranged in a circle.

6. The device for condensation recovery of an extractant according to claim 3, characterized in that: The top of the collar is arranged in an inclined plane, and a plurality of collars on the same vertical line are arranged at equal intervals.

7. The device for condensation recovery of an extractant according to claim 1, characterized in that: A support frame is fixedly installed on the outer side of the transfer tank, the bottom of the support frame is fixedly connected to the top of the recovery box, and two support legs are fixedly installed on the front and back sides of the condensation box.

8. The device for condensation recovery of extractant according to claim 1, characterized in that: The left ends of the plurality of condensing tubes are connected to the same connecting tube 1, and the right ends of the plurality of condensing tubes are connected to the same connecting tube 2. The outer sides of the connecting tube 1 and the connecting tube 2 are both connected to a liquid guide tube.

Images