An external heating type reverse circulation evaporative crystallizer

Abstract

The utility model relates to the technical field of evaporative crystallizer, concretely relates to an external heating type reverse circulation evaporative crystallizer, including jar body, jar cover and buffer seat, the upper and lower both ends of jar body are connected and fixed with jar cover and buffer seat, are provided with the adding pipe on the jar body, and the inside of jar body is provided with multiple groups of finned tube structure, and both ends of finned tube structure keep intercommunication with adding pipe and export, the other side of jar body is provided with side outlet pipe, the tail end of side outlet pipe is provided with valve body, is provided with pull rod in jar body, the top of jar body is provided with inlet pipe, can accurate control the growth process of crystal, realizes the effective regulation and control to the classification of crystal grain, improves crystalline product quality, simultaneously, still should have good corrosion resistance and anti -incrustation ability, reduce equipment maintenance cost, prolong the service life of equipment, and the device is expected to bring new breakthrough for the field of evaporative crystallization with its unique structure design and working principle, satisfies the diversification demand of modern industrial production.

Description

Technical Field

[0001] This utility model relates to the field of evaporation crystallizer technology, specifically to an externally heated reverse circulation evaporation crystallizer. Background Technology

[0002] Evaporation crystallization, a crucial separation and purification method in numerous industries such as chemical, pharmaceutical, and food processing, aims to achieve supersaturation of the solution by evaporating a portion of the solvent, thereby precipitating the solute. In current industrial applications, multi-effect evaporation crystallization and mechanical vapor recompression (MVR) evaporation crystallization technologies are widely used. However, both of these technologies are based on the principle of boiling evaporation, requiring the material solution to be heated to a boiling state. During this process, due to the large amount of solvent vaporization, a significant amount of heating steam is inevitably consumed, resulting in high energy consumption and placing higher demands on equipment materials, thus increasing equipment investment and operating costs.

[0003] Traditional evaporation crystallization equipment, while allowing for some solid precipitation during operation, suffers from significant limitations in effectively controlling crystal grain classification, making it difficult to meet the demands of producing high-quality crystalline products. Natural circulation methods are inefficient, and the flow rate of the solution within the tubes is difficult to precisely control, easily leading to crystal deposition and scaling, affecting heat transfer efficiency and equipment stability. Furthermore, internally heated forced circulation (standard) evaporation crystallizers, with their heating chamber located inside the equipment, present significant maintenance and cleaning challenges when handling corrosive or easily scaling materials. They also have limitations in precisely controlling the crystal growth environment, hindering the production of uniformly sized, high-quality crystalline products. Utility Model Content

[0004] Technical problems to be solved

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an externally heated reverse circulation evaporator crystallizer, which can effectively solve the problems in the existing technology.

[0006] Technical solution

[0007] This utility model provides an externally heated reverse circulation evaporator crystallizer, including a tank body, a tank cover, and a buffer seat. The upper and lower ends of the tank body are respectively connected and fixed to the tank cover and the buffer seat. An inlet pipe is provided on the tank body, and multiple sets of finned tube structures are provided inside the tank body. The two ends of the finned tube structures are connected to the inlet pipe and the outlet. A side outlet pipe is provided on the other side of the tank body, and a valve body is provided at the tail end of the side outlet pipe. A pull rod is provided inside the tank body, and an inlet pipe is provided at the top of the tank body.

[0008] Furthermore, the end of the inlet pipe is connected to the tank via a control valve, the pipe body, and a sealing gasket, and the bottom end of the pipe body is connected to a control valve, and the bottom end of the pipe body is connected to the tank via a sealing gasket.

[0009] Furthermore, a platform is fixed at the top of the tank, and one side of the tank cover is connected to the vent pipe through an upper flange and a side ring. The outer side of the top of the tank is engaged and fixed with the side ring, and the side ring with a threaded structure on the inner side is fixedly connected to the upper flange. The inside of the upper flange is fixedly sleeved with the vent pipe.

[0010] Furthermore, the bottom of the buffer seat is provided with a base, the side outlet pipe is connected to the tank body through a flange, and multiple sets of bolts are provided in the flange.

[0011] Furthermore, the angle between the upper and lower ends of the pull rod and the side of the top and bottom plates is 45°.

[0012] Furthermore, the finned tubes inside the tank are vertically distributed in multiple groups, and each group of finned tubes is a corrugated finned tube.

[0013] Beneficial effects

[0014] This invention, through its inlet pipe, outlet pipe, and multiple sets of vertically distributed finned tubes within the tank, enables highly efficient heat and mass transfer, reducing energy consumption. It allows for precise control of the crystal growth process, achieving effective regulation of grain grading and improving the quality of the crystalline product. Furthermore, it possesses excellent corrosion resistance and anti-scaling capabilities, reducing equipment maintenance costs and extending equipment lifespan. With its unique structural design and working principle, this device is expected to bring new breakthroughs to the field of evaporation crystallization, meeting the diverse needs of modern industrial production.

[0015] In this device, the outer side of the upper flange structure is fixedly connected to the side ring. Therefore, the threaded structure engages with the side ring to achieve the function of combined connection, so as to connect and fix the tank and the gas outlet pipe. Compared with the existing flange structure, it can reduce the problem of many fixing steps caused by multiple bolts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram of the Type A device of this utility model;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure at point I;

[0020] Figure 4 This is a structural schematic diagram of the Type B device of this utility model;

[0021] Figure 5 This is a top view of the structure of the Type B device in this utility model;

[0022] Figure 6 This is a schematic diagram showing the welding and fixing of the tie rod to the top plate and bottom plate in this utility model;

[0023] Figure 7 for Figure 1 The structural cross-section of AA is shown in the view.

[0024] The labels in the diagram represent: 1. Inlet pipe; 2. Inlet pipe; 3. Tank body; 4. Outlet; 5. Base; 6. Buffer seat; 7. Control valve; 8. Pipe body; 9. Sealing gasket; 10. Platform; 11. Tank cover; 12. Gas outlet pipe; 13. Side outlet pipe; 14. Valve body; 15. Flange; 16. Bolt; 17. Tie rod; 18. Upper flange; 19. Side ring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model 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 this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example: An externally heated reverse circulation evaporator crystallizer, see attached diagram. Figure 1 - Appendix Figure 7The container includes a tank body 3, a tank cover 11, and a buffer seat 6. The upper and lower ends of the tank body 3 are respectively connected and fixed to the tank cover 11 and the buffer seat 6. The tank body 3 is provided with an inlet pipe 1, and the interior of the tank body 3 is provided with multiple sets of finned tube structures. The two ends of the finned tube structures are connected to the inlet pipe 1 and the outlet 4. The other side of the tank body 3 is provided with a side outlet pipe 13, and the tail end of the side outlet pipe 13 is provided with a valve body 14. The tank body 3 is provided with a pull rod 17, and the top of the tank body 3 is provided with an inlet pipe 2.

[0028] The end of the inlet pipe 1 is connected to the tank 3 via a control valve 7, a pipe body 8, and a sealing gasket 9. The bottom end of the pipe body 8 is connected to the control valve 7, and the bottom end of the pipe body 8 is also connected to the tank 3 via the sealing gasket 9. Through the inlet pipe 1, the outlet pipe 12, and the multiple sets of vertically distributed finned tubes within the tank 3, the new equipment possesses highly efficient heat and mass transfer performance, reducing energy consumption. It can precisely control the crystal growth process, effectively regulate grain grading, and improve the quality of the crystalline product. Simultaneously, it should also possess good corrosion resistance and anti-scaling ability, reducing equipment maintenance costs and extending equipment lifespan. This device, with its unique structural design and working principle, is expected to bring new breakthroughs to the field of evaporation crystallization, meeting the diverse needs of modern industrial production.

[0029] A platform 10 is fixed to the top of the tank body 3, and one side of the tank cover 11 is connected to the vent pipe 12 through an upper flange 18 and a side ring 19. The outer side of the top of the tank body 3 is engaged and fixed with the side ring 19, and the side ring 19 with a threaded structure on its inner side is fixedly connected to the upper flange 18. The inside of the upper flange 18 is fixedly fitted with the vent pipe 12. A base 5 is provided at the bottom of the buffer seat 6. The side outlet pipe 13 is connected to the tank body 3 through a flange 15, and multiple sets of bolts 16 are provided in the flange 15. The side angle between the upper and lower ends of the pull rod 17 and the top and bottom plates is 45°.

[0030] The finned tubes inside the tank 3 are vertically distributed in multiple groups, and each group of finned tubes is a corrugated finned tube. In this device, the outer side of the upper flange 18 structure is fixedly connected to the side ring 19. Therefore, the upper flange 18 is engaged and fixed with the side ring 19 through a threaded structure to achieve the function of combined connection. This enables the tank 3 and the vent pipe 121 to be connected and fixed. Compared with the existing flange structure, this can reduce the problem of many fixing steps caused by multiple bolts 16.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 this utility model.

Claims

1. An externally heated reverse circulation evaporator crystallizer, characterized in that, The container includes a tank body (3), a tank cover (11), and a buffer seat (6). The upper and lower ends of the tank body (3) are connected and fixed to the tank cover (11) and the buffer seat (6) respectively. The tank body (3) is provided with an inlet pipe (1), and the tank body (3) is provided with multiple sets of finned tube structures inside. The two ends of the finned tube structures are connected to the inlet pipe (1) and the outlet (4). The other side of the tank body (3) is provided with a side outlet pipe (13), and the tail end of the side outlet pipe (13) is provided with a valve body (14). The tank body (3) is provided with a pull rod (17), and the top of the tank body (3) is provided with an inlet pipe (2).

2. The externally heated reverse circulation evaporator crystallizer according to claim 1, characterized in that, The end of the inlet pipe (1) is connected to the tank (3) through a control valve (7), a pipe body (8) and a sealing gasket (9), and the bottom end of the pipe body (8) is connected to the control valve (7), and the bottom end of the pipe body (8) is connected to the tank (3) through the sealing gasket (9).

3. The externally heated reverse circulation evaporator crystallizer according to claim 1, characterized in that, The top of the tank (3) is fixed with a ring of platform (10), and one side of the tank cover (11) is connected to the air outlet pipe (12) through the upper flange (18) and the side ring (19). The outer side of the top of the tank (3) is engaged and fixed with the side ring (19), and the side ring (19) with the inner thread structure is fixedly connected to the upper flange (18). The inside of the upper flange (18) is fixedly sleeved with the air outlet pipe (12).

4. The externally heated reverse circulation evaporator crystallizer according to claim 1, characterized in that, The bottom end of the buffer seat (6) is provided with a base (5), and the side outlet pipe (13) is connected to the tank body (3) through a flange (15), and multiple sets of bolts (16) are provided in the flange (15).

5. The externally heated reverse circulation evaporator crystallizer according to claim 4, characterized in that, The angle between the upper and lower ends of the tie rod (17) and the sides of the top and bottom plates is 45°.

6. The externally heated reverse circulation evaporator crystallizer according to claim 1, characterized in that, The tank (3) contains multiple sets of finned tubes arranged vertically, and each set of finned tubes is a corrugated finned tube.

Images