Hexane recovery device for ultra-high molecular weight polyethylene production

Abstract

The utility model discloses a hexane recovery device for ultra-high molecular weight polyethylene production, which comprises a distillation retort, the top of the distillation retort is fixedly connected with a connecting pipe, the top of the connecting pipe is fixedly connected with a filter box, the inside of the filter box is slidably connected with a mounting plate, and the inside of the mounting plate is provided with an activated carbon plate. A fixed block is fixedly connected to one side of the filter box, a sliding groove is formed in the fixed block, a limiting assembly is arranged in the sliding groove, and a chimney is fixedly connected to the top of the filter box. The hexane recovery device solves the problems that waste gas can be generated during distillation of a traditional hexane recovery device, and harmful substances such as volatile organic compounds (VOCs) can be contained in the waste gas. The problems that in the prior art, the waste gas possibly has harm and influence on the environment and human health, heat is generated during distillation, and a traditional hexane recovery device is not provided with a device for recovering waste heat generally, so that the waste heat which is not recovered is directly dissipated into the environment, and energy is wasted are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hexane recovery devices, in particular to a hexane recovery device for producing ultra-high molecular weight polyethylene. Background Art

[0002] A hexane recovery device for ultra-high molecular weight polyethylene production is a device used to recover the hexane solvent used in the production process. In the process of producing ultra-high molecular weight polyethylene, solvents such as hexane are usually required to help dissolve the polymer raw materials. This device usually includes components such as a distillation tower, a condenser, and a separator. The hexane is separated from the solution through the distillation process and recovered for reuse.

[0003] Traditional hexane recovery units produce waste gas during distillation, which may contain hazardous substances such as volatile organic compounds (VOCs). These waste gases can be harmful to the environment and human health. Furthermore, distillation generates heat, which traditional hexane recovery units generally lack for waste heat recovery. Consequently, this unrecovered waste heat is directly dissipated into the environment, resulting in energy waste. Utility Model Content

[0004] The purpose of the utility model is to provide a hexane recovery device for ultra-high molecular weight polyethylene production to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a distillation tank, the top of the distillation tank is fixedly connected to a connecting pipe, the top of the connecting pipe is fixedly connected to a filter box, the interior of the filter box is slidably connected to a mounting plate, the interior of the mounting plate is provided with an activated carbon plate, one side of the filter box is fixedly connected to a fixed block, the interior of the fixed block is provided with a slide groove, the interior of the slide groove is provided with a limiting component, the top of the filter box is fixedly connected to a chimney, one side of the distillation tank is fixedly connected to a feed pipe, the outside of the distillation tank is provided with a heat absorption component, and the side of the distillation tank away from the feed pipe is fixedly connected to a discharge pipe.

[0006] As a further preferred embodiment of the present technical solution, the heat absorption component includes a heat conducting pipe, which is arranged on the outside of the distillation tank, and one end of the heat conducting pipe is fixedly connected to a water inlet pipe.

[0007] As a further preferred embodiment of the present technical solution, the heat absorption component also includes a water pump, which is fixedly installed on one side of the distillation tank, one end of the heat conduction pipe is fixedly connected to one end of the water pump, and the other end of the water pump is fixedly connected to a water outlet pipe.

[0008] As a further preferred embodiment of the present technical solution, the limiting assembly includes a slider, which is slidably connected to the inside of the slide groove, and a spring is fixedly connected between the top of the slider and the inner wall of the slide groove.

[0009] As a further preferred embodiment of the present technical solution, the limit assembly also includes a card block, which is slidably connected to the inside of the fixed block, the top of the card block is fixedly connected to the bottom of the slider, and a card slot is provided at the top of the mounting plate, and one end of the card block extends to the inside of the card slot.

[0010] As a further preferred embodiment of the present technical solution, a limiting groove is provided through one side of the fixed block, a shift rod is slidably connected to the interior of the limiting groove, and one end of the shift rod is fixedly connected to one side of the slider.

[0011] As a further preferred embodiment of the present technical solution, a slope is provided on the bottom of the block.

[0012] The utility model provides a hexane recovery device for ultra-high molecular weight polyethylene production, which has the following beneficial effects:

[0013] (1) The utility model uses activated carbon plates to absorb volatile organic compounds in exhaust gas. Activated carbon has a high adsorption capacity and can effectively absorb organic matter in exhaust gas, thereby purifying the exhaust gas. This avoids the problem that exhaust gas may cause harm and impact on the environment and human health, thereby increasing the practicality of the device.

[0014] (2) The utility model recovers the heat of the distillation tank through the heat absorption component, thereby avoiding the problem of unrecovered waste heat being directly dissipated into the environment, causing energy waste, and further increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a bottom-up three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the filter box structure of the present utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0019] In the figure: 1. Distillation tank; 2. Filter box; 3. Water pump; 4. Water outlet pipe; 5. Feed pipe; 6. Heat transfer pipe; 7. Chimney; 8. Fixing block; 9. Mounting plate; 10. Water inlet pipe; 11. Discharge pipe; 12. Connecting pipe; 13. Activated carbon plate; 14. Slot; 15. Limiting slot; 16. Lever; 17. Block; 18. Slider; 19. Slide; 20. Spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figures 1-4 As shown, in this embodiment, a hexane recovery device for ultra-high molecular weight polyethylene production includes a distillation tank 1, a connecting pipe 12 is fixedly connected to the top of the distillation tank 1, a filter box 2 is fixedly connected to the top of the connecting pipe 12, a mounting plate 9 is slidably connected to the inside of the filter box 2, an activated carbon plate 13 is arranged inside the mounting plate 9, a fixed block 8 is fixedly connected to one side of the filter box 2, a slide groove 19 is provided inside the fixed block 8, a limiting component is arranged inside the slide groove 19, a chimney 7 is fixedly connected to the top of the filter box 2, a feed pipe 5 is fixedly connected to one side of the distillation tank 1, a heat absorption component is arranged on the outside of the distillation tank 1, and a discharge pipe 11 is fixedly connected to the side of the distillation tank 1 away from the feed pipe 5.

[0022] First, the hexane after precipitation enters the interior of the distillation tank 1 from the feed pipe 5, and then the hexane is distilled through the distillation tank 1. At this time, a large amount of heat is generated when the distillation tank 1 is working, and then the heat of the distillation tank 1 is recovered through the heat absorption component, thereby avoiding the problem that the unrecovered waste heat will be directly dissipated into the environment, causing energy waste, thereby increasing the practicality of the device. Then the exhaust gas generated during distillation enters the interior of the filter box 2 through the connecting pipe 12, and then passes through the activated carbon plate 13 to remove volatile organic compounds in the exhaust gas. Activated carbon has a high adsorption capacity and can effectively adsorb organic matter in the exhaust gas, thereby purifying the exhaust gas, thus avoiding The problem that waste gas may cause harm and impact on the environment and human health is solved, thereby further increasing the practicality of the device. The purified waste gas is then discharged through the chimney 7, and then the distilled hexane is discharged from the discharge pipe 11 for subsequent separation operations. Finally, when the activated carbon plate 13 needs to be replaced, the fixing of the mounting plate 9 can be released by toggling the limit assembly, and the handle is pulled to drive the activated carbon plate 13 to be pulled out from the inside of the filter box 2, and then replaced. When installing the activated carbon plate 13, it is directly inserted into the interior of the filter box 2 through the mounting plate 9, and the mounting plate 9 can be automatically fixed by the limiting assembly, thereby increasing the convenience of the device.

[0023] like Figures 1-4As shown, the heat absorption component includes a heat pipe 6, which is arranged on the outside of the distillation tank 1, and one end of the heat pipe 6 is fixedly connected to the water inlet pipe 10. The heat absorption component also includes a water pump 3, which is fixedly installed on one side of the distillation tank 1, one end of the heat pipe 6 is fixedly connected to one end of the water pump 3, and the other end of the water pump 3 is fixedly connected to the water outlet pipe 4.

[0024] When recovering heat, cold water is injected through the water inlet pipe 10, and the cold water flows through the heat pipe 6, thereby spirally surrounding the outside of the distillation tank 1 through the heat pipe 6, thereby effectively absorbing the heat generated by the distillation tank 1. Then, the hot water is pumped out from the inside of the heat pipe 6 through the water pump 3, and then discharged through the water outlet pipe 4 for subsequent use.

[0025] like Figures 1-4 As shown, the limit assembly includes a slider 18, which is slidably connected to the inside of the slide groove 19, and a spring 20 is fixedly connected between the top of the slider 18 and the inner wall of the slide groove 19. The limit assembly also includes a card block 17, which is slidably connected to the inside of the fixed block 8, and the top of the card block 17 is fixedly connected to the bottom of the slider 18. A card slot 14 is provided on the top of the mounting plate 9, and one end of the card block 17 extends to the inside of the card slot 14. A limiting slot 15 is provided on one side of the fixed block 8, and a driving rod 16 is slidably connected to the inside of the limiting slot 15. One end of the driving rod 16 is fixedly connected to one side of the slider 18, and the bottom of the card block 17 is provided with an inclined surface.

[0026] When replacing the activated carbon plate 13, the slider 18 is driven to slide inside the slide groove 19 by toggling the toggle rod 16, and the block 17 is driven to disengage from the inside of the slot 14, and then the fixation of the mounting plate 9 is released. At this time, the activated carbon plate 13 can be pulled out from the inside of the filter box 2 for replacement. When installing the activated carbon plate 13, one side of the mounting plate 9 contacts the inclined surface of the block 17, thereby driving the block 17 to move and the slider 18 to move to compress the spring 20. When the slot 14 moves to the bottom of the block 17, the reaction force of the spring 20 drives the slider 18 to move and drives the block 17 to enter the inside of the slot 14, thereby completing automatic fixation.

[0027] The utility model provides a hexane recovery device for ultra-high molecular weight polyethylene production, and its specific working principle is as follows: first, the hexane after precipitation enters the interior of the distillation tank 1 from the feed pipe 5, and then the hexane is distilled through the distillation tank 1. At this time, a large amount of heat is generated when the distillation tank 1 is working, and then cold water is injected through the water inlet pipe 10. The cold water flows through the heat conduction pipe 6, and then spirally surrounds the outer side of the distillation tank 1 through the heat conduction pipe 6, so that the heat generated by the distillation tank 1 can be effectively absorbed. Then, the hot water is pumped out from the interior of the heat conduction pipe 6 through the water pump 3, and then discharged through the water outlet pipe 4 for subsequent use. Then, the exhaust gas generated during distillation enters the interior of the filter box 2 through the connecting pipe 12, and then passes through the activated carbon plate 13 to remove volatile organic compounds in the exhaust gas. The activated carbon has a high adsorption capacity and can effectively adsorb the volatile organic compounds in the exhaust gas. The activated carbon plate 13 is removed from the filter box 2 for replacement. When the activated carbon plate 13 is installed, one side of the mounting plate 9 contacts the inclined surface of the block 17, thereby driving the block 17 to move and compressing the spring 20. When the slot 14 moves to the bottom of the block 17, the reaction force of the spring 20 drives the slider 18 to move and drives the block 17 to enter the interior of the slot 14, thereby completing the automatic fixation.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hexane recovery device for ultra-high molecular weight polyethylene production, comprising a distillation tank (1), characterized in that: The top of the distillation tank (1) is fixedly connected to a connecting pipe (12), the top of the connecting pipe (12) is fixedly connected to a filter box (2), the interior of the filter box (2) is slidably connected to a mounting plate (9), an activated carbon plate (13) is provided inside the mounting plate (9), one side of the filter box (2) is fixedly connected to a fixing block (8), a chute (19) is provided inside the fixing block (8), a limiting component is provided inside the chute (19), the top of the filter box (2) is fixedly connected to a chimney (7), one side of the distillation tank (1) is fixedly connected to a feed pipe (5), the outer side of the distillation tank (1) is provided with a heat absorption component, and the side of the distillation tank (1) away from the feed pipe (5) is fixedly connected to a discharge pipe (11).

2. The hexane recovery device for ultra-high molecular weight polyethylene production according to claim 1, characterized in that: The heat absorption component comprises a heat conducting pipe (6), the heat conducting pipe (6) is arranged outside the distillation tank (1), and one end of the heat conducting pipe (6) is fixedly connected to a water inlet pipe (10).

3. The hexane recovery device for ultra-high molecular weight polyethylene production according to claim 2, characterized in that: The heat absorption component further comprises a water pump (3), wherein the water pump (3) is fixedly mounted on one side of the distillation tank (1), one end of the heat conduction pipe (6) is fixedly connected to one end of the water pump (3), and the other end of the water pump (3) is fixedly connected to a water outlet pipe (4).

4. The hexane recovery device for ultra-high molecular weight polyethylene production according to claim 1, characterized in that: The limiting assembly includes a slider (18), the slider (18) is slidably connected to the inside of the slide groove (19), and a spring (20) is fixedly connected between the top of the slider (18) and the inner wall of the slide groove (19).

5. The hexane recovery device for ultra-high molecular weight polyethylene production according to claim 4, characterized in that: The limiting assembly further comprises a card block (17), the card block (17) being slidably connected to the interior of the fixed block (8), the top of the card block (17) being fixedly connected to the bottom of the slider (18), a card slot (14) being provided on the top of the mounting plate (9), and one end of the card block (17) extending to the interior of the card slot (14).

6. The hexane recovery device for ultra-high molecular weight polyethylene production according to claim 4, characterized in that: A limiting groove (15) is provided through one side of the fixed block (8), and a shifting rod (16) is slidably connected inside the limiting groove (15), and one end of the shifting rod (16) is fixedly connected to one side of the slider (18).

7. The hexane recovery device for ultra-high molecular weight polyethylene production according to claim 5, characterized in that: The bottom of the block (17) is provided with an inclined surface.

Images