A heat pump rectification device

Abstract

This utility model relates to the field of heat pump distillation technology, and provides a heat pump distillation device, including a distillation component. A filter structure is fixed on the outer wall of the top of the distillation component. The filter structure includes a filter frame fixed to the outer wall of the top of the distillation component, a filter box fixed to the top of the filter frame, and a filter plate slidably connected to the inner side of the filter box. By providing a filter structure, this utility model can effectively filter impurities such as particles and colloids generated in the distillation gas under the filtration action of the filter plate, preventing blockage of the compressor and steam delivery pipe, extending equipment life. The filter plate adopts a pull-out design, allowing for quick cleaning or replacement of the filter material without stopping the machine, reducing maintenance time, ensuring the purity of the steam entering the compressor, and avoiding impurities affecting the efficiency of the heat pump system. This device achieves the function of conveniently filtering distillation gas, improving the convenience and working principle of the heat pump distillation device.

Description

Technical Field

[0001] This utility model relates to the field of heat pump distillation technology, and in particular to a heat pump distillation device. Background Technology

[0002] Distillation is a core process for separating liquid mixtures in chemical, petroleum, and pharmaceutical industries. Traditional distillation achieves separation by heating the bottom of the column and condensing the top of the column, resulting in a large amount of low-temperature heat being directly discharged by cooling water or air, leading to insufficient energy utilization. The introduction of heat pump technology aims to recover this waste heat and improve system energy efficiency; therefore, a heat pump distillation unit needs to be designed.

[0003] To this end, patent CN216395299U discloses a heat pump distillation device for NMP recovery in lithium battery production. This utility model includes: a cooling tower, with a cleaning mechanism installed inside; power generation mechanisms installed on both sides of the top of the cooling tower; distillation tanks welded to both sides of the top of the cooling tower; a power generation box fixedly installed on the outside of the distillation tanks; the power generation mechanism installed inside the power generation box; a feed inlet opened on the outside of the power generation box; the power generation mechanism connected to a power supply box via wires; the power supply box mounted on a top cover; the top cover mounted on the top of the cooling tower; the cleaning mechanism fixedly installed on the top cover and extending into the bottom of the cooling tower; a fixing frame sleeved on the cooling tower; support legs welded to the bottom of the fixing frame; and a collection pipe connected to the bottom of the cooling tower. This utility model has the advantages of saving energy, high purification accuracy, and preventing NMP from condensing and concentrating, thus avoiding waste and potential problems.

[0004] Although the heat pump distillation device mentioned above has high purification accuracy during use, it is inconvenient to filter the hot vapor generated during distillation and to prevent the compressor and distillation tube from clogging. Therefore, it is necessary to design a heat pump distillation device. Utility Model Content

[0005] The purpose of this invention is to provide a heat pump distillation device to solve the shortcomings of existing heat pump distillation devices, such as the inconvenience of filtering the hot vapor generated by distillation and the inconvenience of preventing the compressor and distillation tubes from clogging.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a heat pump distillation device, including a distillation component;

[0007] A filter structure is fixed on the outer wall of the top of the distillation unit. The filter structure includes a filter rack fixed on the outer wall of the top of the distillation unit, a filter box fixed at the top of the filter rack, a filter plate slidably connected to the inner side of the filter box, one side of the filter plate extending to the outside of the filter box and fixed with a sealing door plate, and an exhaust pipe fixed at the top of the filter box.

[0008] A compressor is fixed on the outer wall of one side of the top of the distillation unit, and a reboiling structure is provided on the side of the distillation unit near the compressor.

[0009] A sieve plate is fixed on the inner wall of the top of the distillation assembly.

[0010] Furthermore, the distillation assembly includes a distillation column, a drain pipe, and a connecting pipe. The drain pipe is fixed to the bottom of the distillation column, and the connecting pipe is fixed to the top of the distillation column.

[0011] Furthermore, the top end of the connecting pipe passes through the filter frame and extends into the interior of the filter box.

[0012] Furthermore, bolts penetrate both sides of the interior of the sealing door panel, with one end of each bolt extending into the interior of the filter box. The end of the exhaust pipe furthest from the filter box is fixedly connected to the input end of the compressor.

[0013] Furthermore, a ceramic filter element is provided inside the filter plate, and a heat insulation structure is fixed on the outer wall of the exhaust pipe.

[0014] Furthermore, the reboiling structure includes a reboiler, a connecting pipe, a steam outlet pipe, and a steam supply pipe. The reboiler is located on one side of the distillation column. The connecting pipe is fixed to the bottom of the reboiler. The steam supply pipe is fixed to the center of the top of the reboiler. The steam outlet pipe is fixed to one side of the top of the reboiler.

[0015] Furthermore, the end of the connecting pipe away from the reboiler extends to the bottom of the distillation column, and the end of the steam supply pipe away from the reboiler is fixedly connected to the output end of the compressor.

[0016] Furthermore, the insulation structure includes an adhesive layer, a first insulation layer, and a second insulation layer. The adhesive layer is fixed to the outer wall of the exhaust pipe, the first insulation layer is fixed to the outer wall of the adhesive layer, and the second insulation layer is fixed to the outer wall of the first insulation layer.

[0017] Furthermore, the first insulation layer is a rock wool layer, and the second insulation layer is a stainless steel cladding layer.

[0018] The advantages of the heat pump distillation device provided by this utility model are as follows:

[0019] With its filtration structure, the filter plates effectively filter out impurities such as particles and colloids generated in the distillation gas, preventing blockage of the compressor and steam pipes and extending equipment life. The filter plates feature a pull-out design, allowing for quick cleaning or replacement of the filter media without stopping the machine, reducing maintenance time and ensuring the purity of the steam entering the compressor. This prevents impurities from affecting the efficiency of the heat pump system, thus enabling the device to filter distillation gas easily and improving the convenience and working principle of the heat pump distillation device.

[0020] By incorporating a reboiling structure, the heat from the steam recovered through the heat pump system is supplied to the reboiler, significantly reducing the energy consumption of external heat sources. Valves are installed in the connecting pipes and steam supply pipes to regulate the heat input and prevent overheating or insufficient energy supply in the reboiler. The reboiling structure and compressor are linked to form a closed-loop heat recovery system, enabling the device to easily recover heat energy and save resources, thus improving the environmental friendliness of the heat pump distillation unit during use.

[0021] By incorporating an insulation structure with a first and second insulation layer for double insulation, heat dissipation from the exhaust pipe is reduced, improving the energy efficiency of the heat pump system. The second insulation layer protects the rock wool layer from moisture erosion, extending its service life and preventing burns to operators from the high-temperature pipe outer wall. This design enables the device to easily insulate the exhaust pipe, enhancing the convenience and safety of the heat pump distillation unit during use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0023] Figure 2 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0024] Figure 3 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0025] Figure 4 This is a top-view cross-sectional three-dimensional structural diagram of the present invention.

[0026] Figure 5 This is a three-dimensional structural diagram of the thermal insulation structure of this utility model.

[0027] The following are the annotations in the figure: 1. Distillation assembly; 11. Distillation column; 12. Drain pipe; 13. Connecting pipe; 2. Filtration structure; 21. Filter rack; 22. Filter box; 23. Sealing door plate; 24. Filter plate; 25. Exhaust pipe; 3. Compressor; 4. Reboiler structure; 41. Reboiler; 42. Connecting pipe; 43. Steam outlet pipe; 44. Steam supply pipe; 5. Sieve plate; 6. Insulation structure; 61. Adhesive layer; 62. First insulation layer; 63. Second insulation layer. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-5 The present invention provides a heat pump distillation device, including a distillation component 1.

[0030] Reference Figures 1-5 The distillation assembly 1 includes a distillation column 11, a drain pipe 12, and a connecting pipe 13. The drain pipe 12 is fixed to the bottom of the distillation column 11, and the connecting pipe 13 is fixed to the top of the distillation column 11. The top end of the connecting pipe 13 passes through a filter frame 21 and extends into the interior of a filter box 22. A filter structure 2 is fixed to the outer wall of the top of the distillation assembly 1. The filter structure 2 includes a filter frame 21 fixed to the outer wall of the top of the distillation assembly 1, and a filter box 22 is fixed to the top of the filter frame 21. The inner side of the filter box 22 slides... A filter plate 24 is dynamically connected. One side of the filter plate 24 extends to the outside of the filter box 22 and is fixed with a sealing door plate 23. An exhaust pipe 25 is fixed to the top of the filter box 22. Bolts pass through both sides of the inside of the sealing door plate 23. One end of each bolt extends into the inside of the filter box 22. A ceramic filter element is installed inside the filter plate 24. The end of the exhaust pipe 25 away from the filter box 22 is fixedly connected to the input end of the compressor 3. A sieve plate 5 is fixed on the inner wall of the top of the distillation assembly 1.

[0031] The hot steam discharged from the top of the distillation column 11 enters the filter box 22 through the connecting pipe 13. The filter plate 24 is equipped with a ceramic filter element to intercept solid particles. The filter plate 24 and the filter box 22 are slidably connected and can be easily pulled out through the sealing door 23 for easy replacement. The filtered clean steam enters the compressor 3 from the exhaust pipe 25 for the next step of energy recovery.

[0032] Reference Figures 1-4 A compressor 3 is fixed on the outer wall of one side of the top of the distillation assembly 1. A reboiling structure 4 is provided on the side of the distillation assembly 1 near the compressor 3. The reboiling structure 4 includes a reboiler 41, a connecting pipe 42, a steam outlet pipe 43, and a steam supply pipe 44. The reboiler 41 is located on one side of the distillation column 11. The connecting pipe 42 is fixed at the bottom of the reboiler 41. The steam supply pipe 44 is fixed at the center of the top of the reboiler 41. The steam outlet pipe 43 is fixed on one side of the top of the reboiler 41. The end of the connecting pipe 42 away from the reboiler 41 extends to the bottom of the distillation column 11. The end of the steam supply pipe 44 away from the reboiler 41 is fixedly connected to the output end of the compressor 3.

[0033] The high-temperature steam output from the compressor 3, powered by an external power source, enters the reboiler 41 through the steam supply pipe 44. The reboiler 41 is connected to the bottom of the distillation column 11 through the connecting pipe 42. The high-temperature steam heats the liquid in the column bottom, causing it to vaporize. The steam outlet pipe 43 guides the uncondensed residual steam back to the distillation column 11 or discharges it. The flow rate and pressure of the steam supply pipe 44 are adjusted to match the heat demand of the distillation column 11.

[0034] Reference Figure 5An insulation structure 6 is fixed on the outer wall of the exhaust pipe 25. The insulation structure 6 includes an adhesive layer 61, a first insulation layer 62, and a second insulation layer 63. The adhesive layer 61 is fixed on the outer wall of the exhaust pipe 25. The first insulation layer 62 is fixed on the outer wall of the adhesive layer 61. The second insulation layer 63 is fixed on the outer wall of the first insulation layer 62. The first insulation layer 62 is a rock wool layer, and the second insulation layer 63 is a stainless steel skin layer.

[0035] The adhesive layer 61 fixes the insulation material to the outer wall of the exhaust pipe 25. The first insulation layer 62 is a rock wool layer, which serves as the main insulation layer to reduce heat loss. The second insulation layer 63 is a stainless steel skin layer, which wraps around the outside of the first insulation layer 62. It can prevent moisture and resist mechanical damage. The porous structure of the rock wool hinders heat conduction, and the stainless steel skin reflects radiant heat, thus working together to reduce the surface temperature.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat pump distillation apparatus, comprising a distillation unit (1); Its features are: A filter structure (2) is fixed on the outer wall of the top of the distillation assembly (1). The filter structure (2) includes a filter rack (21) fixed on the outer wall of the top of the distillation assembly (1). A filter box (22) is fixed at the top of the filter rack (21). A filter plate (24) is slidably connected to the inner side of the filter box (22). One side of the filter plate (24) extends to the outside of the filter box (22) and is fixed with a sealing door plate (23). An exhaust pipe (25) is fixed at the top of the filter box (22). A compressor (3) is fixed on the outer wall of the top side of the distillation assembly (1), and a reboiling structure (4) is provided on the side of the distillation assembly (1) near the compressor (3); A sieve plate (5) is fixed on the inner wall of the top of the distillation assembly (1).

2. The heat pump distillation apparatus according to claim 1, characterized in that: The distillation assembly (1) includes a distillation column (11), a drain pipe (12) and a connecting pipe (13). The drain pipe (12) is fixed at the bottom of the distillation column (11), and the connecting pipe (13) is fixed at the top of the distillation column (11).

3. The heat pump distillation apparatus according to claim 2, characterized in that: The top end of the connecting pipe (13) passes through the filter frame (21) and extends into the interior of the filter box (22).

4. The heat pump distillation apparatus according to claim 1, characterized in that: Bolts penetrate both sides of the interior of the sealing door panel (23), and one end of each bolt extends into the interior of the filter box (22). The end of the exhaust pipe (25) away from the filter box (22) is fixedly connected to the input end of the compressor (3).

5. A heat pump distillation apparatus according to claim 1, characterized in that: The filter plate (24) is equipped with a ceramic filter element inside, and the exhaust pipe (25) is fixed with a heat insulation structure (6).

6. A heat pump distillation apparatus according to claim 1, characterized in that: The reboiling structure (4) includes a reboiler (41), a connecting pipe (42), a steam outlet pipe (43), and a steam supply pipe (44). The reboiler (41) is located on one side of the distillation column (11). The connecting pipe (42) is fixed at the bottom of the reboiler (41). The steam supply pipe (44) is fixed at the center of the top of the reboiler (41). The steam outlet pipe (43) is fixed on one side of the top of the reboiler (41).

7. A heat pump distillation apparatus according to claim 6, characterized in that: The end of the connecting pipe (42) away from the reboiler (41) extends to the bottom of the distillation column (11), and the end of the steam supply pipe (44) away from the reboiler (41) is fixedly connected to the output end of the compressor (3).

8. A heat pump distillation apparatus according to claim 5, characterized in that: The insulation structure (6) includes an adhesive layer (61), a first insulation layer (62) and a second insulation layer (63). The adhesive layer (61) is fixed to the outer wall of the exhaust pipe (25). The first insulation layer (62) is fixed to the outer wall of the adhesive layer (61), and the second insulation layer (63) is fixed to the outer wall of the first insulation layer (62).

9. A heat pump distillation apparatus according to claim 8, characterized in that: The first insulation layer (62) is a rock wool layer, and the second insulation layer (63) is a stainless steel lining.

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