Process for recovering perchlorate from perchlorate packaging bag

Abstract

The invention relates to the technical field of perchlorate recovery, in particular to a process for recovering perchlorate from perchlorate packaging bags, which comprises the following steps: S1, sequentially conveying the packaging bags into a recovery chamber for primary recovery and secondary recovery; s2, liquid I generated by primary recovery is guided into a distillation tower for distillation and crystallization, and liquid II generated by secondary recovery is guided into a primary recovery pool to be used as water for primary recovery and recycled; s3, purified water is introduced into a distillation tower to serve as condensate water, and the purified water absorbing heat serves as a water source for secondary recovery; s4, purified water obtained after distillation is collected and used as water for condensation of a distillation tower, and crystals obtained after distillation of the distillation tower are collected; the step S1 comprises the steps that S101, bag opening is conducted, specifically, a packaging bag is turned over, so that the inner side of the packaging bag is completely exposed; and S102, recycling is conducted, specifically, the turned packaging bag is washed and recycled. The system improves energy utilization and is more environment-friendly.

Description

Technical Field

[0001] This invention relates to the field of perchlorate recovery technology, and more specifically to a process for recovering perchlorate from perchlorate packaging bags. Background Technology

[0002] Perchlorate is a toxic chemical that exists in low amounts in soil in nature, but is present in large quantities in the fuels of rockets used to launch spacecraft, satellites, and missiles. Space fuel can spread and pollute the environment, posing a threat to humans and other living organisms.

[0003] Currently, the recycling of perchlorate packaging bags mostly uses the dissolution and distillation method. However, if the packaging bags are continuously rinsed with liquid during the dissolution process, a large amount of liquid will be generated, resulting in a large workload during distillation, causing inconvenience to subsequent recycling and generating a lot of energy. If liquid is used for circulating rinsing, the perchlorate on the packaging bags will not be completely washed away, leading to a decrease in recycling efficiency. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a process for recovering perchlorate from perchlorate packaging bags, which can effectively solve the problems of low recycling efficiency, high energy consumption and lack of environmental protection in the existing technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a process for recovering perchlorate from perchlorate packaging bags, comprising the following steps: S1. The disassembled packaging bags are sequentially conveyed into the recycling chamber for primary and secondary recycling using a clamping and conveying device. S2. The liquid generated from the initial recovery is introduced into a distillation tower for distillation and crystallization, while the liquid generated from the secondary recovery is introduced into the initial recovery tank for use as water during the initial recovery and for recycling. S3. Pure water is introduced into the distillation tower as condensate, and then the pure water after absorbing heat is used as the water source for secondary recovery. S4. Collect the pure water obtained after distillation and use it as condensate water for the distillation column. Collect the crystals after distillation in the distillation column. Step S1 includes: S101, Bag support: The packaging bags entering the recycling chamber are turned over by auxiliary support equipment so that the inside of the packaging bags is completely exposed. S102. Recycling: The perchlorate on the surface of the packaging bag is recovered by washing and rinsing it after it has been turned over.

[0006] Furthermore, the liquid used in both the initial and secondary recycling processes is hot water, and the temperature of the hot water is 80 degrees Celsius.

[0007] Further, in step S1, the recycling chamber includes a recycling box for providing a sealed space for recycling, the bottom of the recycling box is provided with a liquid collection pool for recycling liquid, and the recycling box includes a sealing cover and a drive component disposed on the sealing cover for providing power; The cleaning cylinder, which is set inside the recycling bin for cleaning packaging bags, includes a fixed cylinder that is slidably set inside a sealed cover, and a cleaning frame that is rotatably installed inside the fixed cylinder and connected to the drive end of a drive component; An auxiliary support assembly is installed at the bottom of the recycling bin to turn the packaging bag over and supply liquid to the fixed cylinder. The auxiliary support assembly includes a lifting cone and a one-way liquid suction cylinder installed in the liquid collection tank. The pull-out end of the one-way liquid suction cylinder is connected to the bottom of the lifting cone, and the discharge end of the one-way liquid suction cylinder is connected to the cleaning frame through a one-way liquid delivery pipe.

[0008] Furthermore, the sealing cover also includes a connecting sleeve mounted on the sealing cover, and a push rod rotatably disposed at the driving end of the driving component and passing through the connecting sleeve to connect with the cleaning frame. The push rod is provided with a guide groove, and the inner wall of the connecting sleeve is provided with a protrusion extending into the guide groove, which is used to cooperate with the connecting sleeve to rotate when the push rod moves up and down.

[0009] Furthermore, the fixed cylinder is slidably connected to the inner wall of the sealing cover through two sets of liquid collection boxes, and the two sets of liquid collection boxes are respectively connected to two sets of one-way liquid extraction cylinders. The liquid collection box is equipped with a control valve, and the sealing cover is equipped with a guide block for opening the control valve.

[0010] Furthermore, the fixed cylinder is provided with spray holes facing the packaging bag and a cleaning brush, and there are multiple sets of spray holes distributed on both sides of the cleaning brush. The two sets of collection boxes are respectively connected to the spray holes on one side. The two sets of guide blocks on the sealing cover are staggered, and the collection box at the higher position is used for the initial cleaning spray, while the one at the lower position is used for the secondary cleaning spray.

[0011] Furthermore, the liquid collection tank includes a liquid storage tank and a movable guide plate rotatably mounted on the liquid storage tank. The movable guide plate is tilted to guide the collection direction of the cleaned recycled liquid. The movable guide plate is provided with clearance holes to prevent squeezing with the lifting cone.

[0012] Furthermore, the one-way pumping cylinder is provided with a one-way inlet, and the one-way inlet is lower than the lowest liquid level in the storage tank.

[0013] Furthermore, the liquid storage tank is provided with a partition in the middle, and a pump connecting the two ends is provided on the partition.

[0014] Beneficial effects

[0015] The technical solution provided by this invention has the following advantages compared with the known prior art: 1. During the initial recovery, the liquid sprayed out is directly drawn from the storage tank, while during the secondary recovery, the liquid is obtained from the distilled water in the distillation tower. At the same time, the heat generated during distillation is used to heat the liquid, which improves energy utilization and is more environmentally friendly. Second, the push rod is driven by the drive component, which in turn drives the cleaning frame to rotate, thus cleaning the packaging bags efficiently. At the same time, the liquid collection box contacts the guide block to open the control valve, and the liquid in the one-way liquid extraction cylinder is squeezed and sprayed out from the spray hole, improving the cleaning effect of the packaging bags. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a process flow diagram of the present invention; Figure 2 This is a schematic diagram of the recovery chamber in this invention; Figure 3 This is a schematic diagram showing the connection between the cleaning cylinder and the recovery chamber in this invention; Figure 4 This is an exploded view of the cleaning cylinder structure in this invention; Figure 5 This is a schematic diagram of the auxiliary support component in this invention; Figure 6 This is a schematic diagram of the liquid collection tank in this invention.

[0018] Reference numerals: 1. Recycling bin; 11. Sealing cover; 12. Guide block; 13. Driving component; 14. Push rod; 15. Connecting sleeve; 2. Cleaning cylinder; 21. Fixing cylinder; 22. Collection box; 23. Cleaning frame; 231. Spray hole; 3. Auxiliary support assembly; 31. Lifting cone; 32. One-way suction cylinder; 33. One-way infusion pipe; 4. Collection pool; 41. Storage pool; 42. Movable guide plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to embodiments.

[0021] Example:

[0022] A process for recovering perchlorate from perchlorate packaging bags, as shown in the attached document. Figure 1-6 This includes the following steps: S1. The disassembled packaging bags are sequentially conveyed into the recycling chamber for primary and secondary recycling using a clamping and conveying device. S2. The liquid generated from the initial recovery is introduced into a distillation tower for distillation and crystallization. At the same time, the liquid generated from the secondary recovery is introduced into the initial recovery tank for use as water during the initial recovery and is recycled. The liquid used in both the initial and secondary recovery is hot water at a temperature of 80 degrees Celsius to accelerate the dissolution of perchlorate. S3. Pure water is introduced into the distillation tower as condensate, and then the pure water after absorbing heat is used as the water source for secondary recovery. S4. Collect the pure water obtained after distillation and use it as condensate water for the distillation column. Collect the crystals after distillation in the distillation column. Step S1 includes: S101, Bag support: The packaging bags entering the recycling chamber are turned over by auxiliary support equipment so that the inside of the packaging bags is completely exposed. S102. Recycling: The perchlorate on the surface of the packaging bag is recovered by washing and rinsing it after it has been turned over.

[0023] In step S1, the recycling chamber includes a recycling box 1 for providing a sealed space for recycling, preventing cross-contamination and protecting the health of the operating environment. The bottom of the recycling box 1 is provided with a collection tank 4 for recycling liquid.

[0024] Specifically, the collection tank 4 includes a storage tank 41 and a movable guide plate 42 rotatably mounted on the storage tank 41. The movable guide plate 42 is used to rotate and tilt to guide the collection direction of the cleaned recycled liquid. The storage tank 41 is provided with a partition in the middle, and the partition is provided with a pump connecting the two ends to replace different recycled liquids, thereby improving washing efficiency and recycling efficiency, while saving water.

[0025] The recycling bin 1 includes a sealed cover 11 and a drive unit 13 disposed on the sealed cover 11 for providing power, thereby driving the device to perform cleaning.

[0026] Specifically, the sealing cover 11 also includes a connecting sleeve 15 installed on the sealing cover 11, and a push rod 14 rotatably disposed at the driving end of the driving member 13 and passing through the connecting sleeve 15. The push rod 14 is provided with a guide groove, and the inner wall of the connecting sleeve 15 is provided with a protrusion extending into the guide groove. When the driving member 13 pushes the push rod 14 up and down, it cooperates with the connecting sleeve 15 to rotate, thereby improving the cleaning speed and effect.

[0027] The cleaning cylinder 2, which is set inside the recycling bin 1, is used to clean the packaging bags. The cleaning cylinder 2 is driven up and down by the drive component 13 and rotates in conjunction with the connecting sleeve 15 to improve the cleaning efficiency. The cleaning cylinder 2 includes a fixed cylinder 21 that is slidably set inside the sealing cover 11. A cleaning frame 23 that is rotatably installed inside the fixed cylinder 21 and connected to the drive end of the drive component 13 is also installed. The cleaning frame 23 descends and cleans as it is pushed by the drive component 13.

[0028] The cleaning frame 23 is connected to the bottom of the push rod 14 that passes through the connecting sleeve 15 and is located at the driving end of the drive component 13, so that it will rotate during the lifting and lowering process, thereby speeding up the cleaning of the packaging bag.

[0029] In addition, the fixed cylinder 21 is provided with a spray hole 231 facing the packaging bag and a cleaning brush. The spray hole 231 is provided in multiple sets and distributed on both sides of the cleaning brush. By rotating and lifting the cleaning frame 23, the cleaning brush is brought into full contact with the packaging bag for effective removal. The two sets of liquid collection boxes 22 are respectively connected to the spray hole 231 on one side, which can be opened in stages during movement for different cleaning and recycling. Furthermore, the two sets of guide blocks 12 on the sealing cover 11 are staggered, and the liquid collection box 22 at the higher position is used for the initial cleaning spray, while the one at the lower position is used for the secondary cleaning spray.

[0030] An auxiliary support assembly 3 is installed at the bottom of the recycling bin 1 to turn the packaging bag over and supply liquid to the fixed cylinder 21. The packaging bag is turned over by the lifting and lowering of the auxiliary support assembly 3, which facilitates cleaning. The auxiliary support assembly 3 includes a lifting cone 31 and a one-way liquid extraction cylinder 32 installed in the liquid collection tank 4. The outer circumference of the boss at the top of the lifting cone 31 is provided with a rubber sleeve, and the top diameter is smaller than the bottom diameter. The one-way liquid extraction cylinder 32 is used to extract liquid, and the pull end of the one-way liquid extraction cylinder 32 is connected to the bottom of the lifting cone 31. This is to prepare for the lifting cone 31 to extract liquid while turning the packaging bag over, so that the cleaning cylinder 2 squeezes and sprays the liquid into the cleaning frame 23 when it descends. The discharge end of the one-way liquid extraction cylinder 32 is connected to the cleaning frame 23 through a one-way infusion pipe 33, and the one-way liquid extraction cylinder 32 is a spring tube.

[0031] Specifically, the movable guide plate 42 is provided with clearance holes to prevent it from being squeezed against the lifting cone 31.

[0032] Furthermore, the fixed cylinder 21 is slidably connected to the inner wall of the sealing cover 11 through two sets of liquid collection boxes 22 to prevent the fixed cylinder 21 from rotating. The two sets of liquid collection boxes 22 are respectively connected to two sets of one-way liquid extraction cylinders 32 for extracting liquid from the one-way liquid extraction cylinders 32. The liquid collection box 22 is equipped with a control valve, and the sealing cover 11 is equipped with a guide block 12 to open the control valve. When the fixed cylinder 21 drives the liquid collection box 22 to descend, it contacts the guide block 12 inside the sealing cover 11, thereby opening different spray holes 231 in stages to perform segmented primary and secondary recovery operations.

[0033] In addition, the one-way pumping cylinder 32 is equipped with a one-way inlet, and the one-way inlet is lower than the lowest liquid level in the storage tank 41 to prevent the one-way pumping cylinder 32 from being unable to pump liquid due to the liquid level being too low.

[0034] Working principle: After the packaging bag enters the sealing cover 11, it stops directly above the auxiliary support component 3. Then, the lifting cone 31 rises and lifts the packaging bag from the bottom until the packaging bag is turned over. At the same time, the lifting cone 31 drives the piston on the one-way liquid extraction cylinder 32 to extract and store the liquid. Then, the drive component 13 pushes the push rod 14, which drives the cleaning frame 23 to rotate with the cooperation of the connecting sleeve 15. When the cleaning frame 23 descends, it rotates and cleans the packaging bag through the brush in the fixed cylinder 21. As the fixed cylinder 21 drives the liquid collection box 22 to descend, the liquid collection box 22 contacts the guide block 12 and opens the control valve. At the same time, the liquid in the one-way liquid extraction cylinder 32 is squeezed and sprayed out from the spray hole 231. After continuing to descend, it drives another set of liquid collection boxes 22 to open, controlling the spraying of pure water for secondary recycling. In the above technical solution... The packaging bag is turned over by lifting (31) and the inside of the packaging bag is cleaned and rinsed multiple times by rotating (23) to remove the perchlorate inside the packaging bag. After cleaning, the packaging bag can be collected and reused after drying, thereby improving the recycling efficiency and reducing the cost of recycling. When the first and second recycling cycles alternate, the movable guide plate 42 rotates and faces one side to separate the liquid of the first recycling and the liquid of the second recycling. The liquid sprayed during the first recycling is directly drawn from the storage tank 41, while the liquid during the second recycling is obtained from the distilled water in the distillation tower. The storage tank 41 is equipped with auxiliary heating equipment to heat the liquid of the second recycling. Before heating, the heat generated during distillation is used to auxiliary heat the liquid, which improves energy utilization, reduces energy consumption, and is more environmentally friendly.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A process for recovering perchlorate from perchlorate packaging bags, characterized in that, Includes the following steps: S1. The disassembled packaging bags are sequentially conveyed into the recycling chamber for primary and secondary recycling using a clamping and conveying device. S2. The liquid generated from the initial recovery is introduced into a distillation tower for distillation and crystallization, while the liquid generated from the secondary recovery is introduced into the initial recovery tank for use as water during the initial recovery and for recycling. S3. Pure water is introduced into the distillation tower as condensate, and then the pure water after absorbing heat is used as the water source for secondary recovery. S4. Collect the pure water obtained after distillation and use it as condensate water for the distillation column. Collect the crystals after distillation in the distillation column. Step S1 includes: S101, Bag support: The packaging bags entering the recycling chamber are turned over by auxiliary support equipment so that the inside of the packaging bags is completely exposed. S102. Recycling: The perchlorate on the surface of the packaging bag is recovered by washing and rinsing it after it has been turned over.

2. The process for recovering perchlorate from perchlorate packaging bags according to claim 1, characterized in that, The liquid used in both the initial and secondary recycling processes is hot water, and the temperature of the hot water is greater than 60 degrees Celsius.

3. The process for recovering perchlorate from perchlorate packaging bags according to claim 1, characterized in that, In step S1, the recycling chamber includes a recycling box (1) for providing a sealed space for recycling. The bottom of the recycling box (1) is provided with a liquid collection tank (4) for recycling liquid. The recycling box (1) includes a sealing cover (11) and a drive unit (13) provided on the sealing cover (11) for providing power. The cleaning cylinder (2) for cleaning packaging bags is set in the recycling bin (1). The cleaning cylinder (2) includes a fixed cylinder (21) that is slidably set in the sealing cover (11), and a cleaning frame (23) connected to the driving end of the driving component (13) is rotatably installed in the fixed cylinder (21). An auxiliary support assembly (3) is set at the bottom of the recycling bin (1) for turning over the packaging bag and supplying liquid to the fixed cylinder (21). The auxiliary support assembly (3) includes a lifting cone (31) set in the liquid collection tank (4) and a one-way liquid extraction cylinder (32). The pull-out end of the one-way liquid extraction cylinder (32) is connected to the bottom of the lifting cone (31). The drain end of the one-way liquid extraction cylinder (32) is connected to the cleaning rack (23) through a one-way liquid delivery pipe (33).

4. The process for recovering perchlorate from perchlorate packaging bags according to claim 3, characterized in that, The sealing cover (11) also includes a connecting sleeve (15) installed on the sealing cover (11), and a push rod (14) rotatably disposed at the driving end of the driving member (13) and passing through the connecting sleeve (15) to connect with the cleaning frame (23). The push rod (14) is provided with a guide groove, and the inner wall of the connecting sleeve (15) is provided with a protrusion extending into the guide groove, which is used to cooperate with the connecting sleeve (15) to rotate when the push rod (14) moves up and down.

5. The process for recovering perchlorate from perchlorate packaging bags according to claim 3, characterized in that, The fixed cylinder (21) is slidably connected to the inner wall of the sealing cover (11) through two sets of liquid collection boxes (22), and the two sets of liquid collection boxes (22) are respectively connected to two sets of one-way liquid extraction cylinders (32). The liquid collection box (22) is provided with a control valve, and the sealing cover (11) is provided with a guide block (12) for opening the control valve.

6. The process for recovering perchlorate from perchlorate packaging bags according to claim 5, characterized in that, The fixed cylinder (21) is provided with a spray hole (231) facing the packaging bag and a cleaning brush. The spray hole (231) is provided in multiple sets and distributed on both sides of the cleaning brush. The two sets of collection boxes (22) are respectively connected to the spray hole (231) on one side. The two sets of guide blocks (12) on the sealing cover (11) are staggered. The collection box (22) at the high position is used for the initial cleaning spray, and the one at the low position is used for the secondary cleaning spray.

7. The process for recovering perchlorate from perchlorate packaging bags according to claim 3, characterized in that, The collection tank (4) includes a storage tank (41) and a movable guide plate (42) rotatably mounted on the storage tank (41). The movable guide plate (42) is tilted to guide the collection direction of the cleaned recycled liquid. The movable guide plate (42) is provided with a clearance hole to prevent squeezing with the lifting cone (31).

8. The process for recovering perchlorate from perchlorate packaging bags according to claim 7, characterized in that, The one-way pumping cylinder (32) is provided with a one-way inlet, and the one-way inlet is lower than the lowest liquid level in the storage tank (41).

9. A process for recovering perchlorate from perchlorate packaging bags according to claim 7, characterized in that, The storage tank (41) is equipped with a partition in the middle, and the partition is equipped with a pump that connects the two ends.

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