Module-combined multistage heat exchange reboiler

Abstract

The utility model provides a module combined multistage heat exchange reboiler, which relates to the technical field of reboilers and comprises a first tank body, a connecting tank is arranged on one side of the first tank body, a second tank body is arranged on one side, far away from the first tank body, of the connecting tank, and a first baffling groove is arranged on the surface of one side, close to the first tank body, of the connecting tank. A second baffling groove is formed in the surface of the side, close to the second tank body, of the connecting tank, and liquid in the heat exchange pipe in the first tank body is adopted for heat exchange, so that preheating is conducted. Due to the fact that the connecting tank is in flange connection and sealing with the first tank body and the second tank body, preheated liquid sequentially passes through the first baffling groove, the first connecting pipe, the second connecting pipe and the first connecting pipe, then enters the second baffling groove and then flows into the heat exchange pipe of the second tank body. At the moment, a high heat source enters from a water inlet in the top surface of the second tank body and exchanges heat with preheated liquid, so that thermal stress is reduced, finally, the liquid is heated to be gasified in a heat exchange pipe of the second tank body and is discharged through a gas outlet, and the problem that a traditional reboiler lacks an effective material preheating link is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to reboiler technical field especially relates to a module combination's multistage heat exchange reboiler. BACKGROUND

[0002] According to the tower bottom reboiling heat exchanger of Chinese open (announcement) no. CN211724744U discloses a tower bottom reboiling heat exchanger, including heat collecting pipe plate and intermediate body, the heat collecting pipe plate is installed and fixed on the inner side of the both ends of intermediate body, the middle of heat collecting pipe plate is located in the inside of intermediate body and is provided with heat collecting pipe, through control box, electromagnetic pressure relief pipe and wireless pressure transmitter form a pressure relief system, thereby effectively changing the overall pressure intensity of device, this plays a good protective effect, when using, control box passes through the high integration processing of STM32F103RCT6 model control chip inside, can well control use, and control box passes through the signal of wireless module inside can well receive wireless pressure transmitter, this is handled, can well discern whether control electromagnetic pressure relief pipe and control use, thereby form a pressure relief control automatic system process, can play a good safety protection effect, this makes the overall service life of device effectively obtain promotion.

[0003] The above-mentioned technology and prior art reboiler are used by passing into heating medium to heat the material to be vaporized. But due to the lack of effective material preheating link, the material enters the reboiler and is directly heated by high-temperature heating medium. However, sudden high-intensity heating of the material will cause a large thermal stress inside the equipment. This thermal stress will cause the heat exchange tube to deform, seriously affecting the service life and running stability of the equipment, and increasing the cost of equipment maintenance and replacement. UTILITY MODEL CONTENTS

[0004] The utility model discloses a module combination's multistage heat exchange reboiler to solve the lack of effective material preheating link in prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a modular multi-stage heat exchanger and reboiler, comprising a first tank, a connecting tank on one side of the first tank, a second tank on the side of the connecting tank away from the first tank, a first baffle groove on the surface of the connecting tank near the first tank, a second baffle groove on the surface of the connecting tank near the second tank, two first connecting pipes on the bottom surface of the connecting tank, a second connecting pipe at the bottom of the two first connecting pipes, two bases on the bottom surface of both the first and second tanks, a first end cap on the side of the first tank away from the connecting tank, a second end cap on the side of the second tank away from the connecting tank, a liquid inlet on the side of the first end cap, a gas outlet on the side of the second end cap, a water inlet on the top surface of both the first and second tanks near the first end cap, a water outlet on the top surface of both the first and second tanks near the second end cap, two tube supports inside both the first and second tanks, baffles arranged in an array and cross arrangement inside both the first and second tanks, and heat exchange tubes arranged in a circumferential array inside both the first and second tanks.

[0006] Preferably, both the first tank and the second tank are connected to the connecting tank flange, the first end cap is connected to the first tank flange, and the second end cap is connected to the second tank flange. The first end cap and the first baffle are mirror images of each other with the first tank as the center, and the second end cap and the second baffle are mirror images of each other with the second tank as the center.

[0007] Preferably, the two bases on the bottom surfaces of the first tank and the second tank are both located at both ends of the first tank and the second tank, and the two bases on the bottom surfaces of the first tank and the second tank are welded to the first tank and the second tank.

[0008] Preferably, both first connecting pipes are welded to the connecting tank, and both first connecting pipes are located at the bottom of the first baffle and the second baffle. Both first connecting pipes are connected to the first baffle and the second baffle. Both ends of the second connecting pipe are connected to the flanges of the two first connecting pipes.

[0009] Preferably, the two tube racks inside the first tank and the second tank are evenly arranged at both ends inside the first tank and the second tank.

[0010] Preferably, the baffles inside the first tank and the second tank are both located between the two pipe supports.

[0011] Preferably, the heat exchange tubes inside the first tank and the second tank both penetrate the two tube racks and baffles inside the first tank and the second tank.

[0012] Beneficial effects

[0013] In this invention, the liquid to be reboiled enters the heat exchange tubes inside the first tank through the inlet of the first end cap. Simultaneously, a higher-temperature heat exchanger enters through the water inlet of the first tank, exchanging heat with the liquid inside the heat exchange tubes of the first tank, thus preheating it. Because the connecting tank is flange-connected and sealed to the first and second tanks, the preheated liquid sequentially passes through the first baffle, the first connecting pipe, the second connecting pipe, and the first connecting pipe before entering the second baffle and then flowing into the heat exchange tubes of the second tank. At this point, a high-temperature heat source enters from the water inlet on the top surface of the second tank, exchanging heat with the preheated liquid, reducing thermal stress. Finally, the liquid is heated to vaporization in the heat exchange tubes of the second tank and discharged through the gas outlet, solving the problem of traditional reboilers lacking an effective material preheating stage. Attached Figure Description

[0014] Figure 1 This is an isometric drawing of the present invention;

[0015] Figure 2 This is a top view of the present invention;

[0016] Figure 3 For the present utility model Figure 2 Sectional view at point AA;

[0017] Figure 4 This is a partial right view of the present invention;

[0018] Figure 5 For the present utility model Figure 4 Sectional view at BB.

[0019] Legend:

[0020] 1. First tank body; 2. Connecting tank; 3. Second tank body; 4. First end cap; 5. Second end cap; 6. Liquid inlet; 7. Gas outlet; 8. Water inlet; 9. Water outlet; 10. Tube rack; 11. Baffle plate; 12. Heat exchange tube; 13. Base; 14. First baffle groove; 15. Second baffle groove; 16. First connecting pipe; 17. Second connecting pipe. Detailed Implementation

[0021] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0022] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0024] Reference Figures 1-5 A modular multi-stage heat exchanger and reboiler includes a first tank 1, a connecting tank 2 on one side of the first tank 1, and a second tank 3 on the side of the connecting tank 2 away from the first tank 1. The surface of the connecting tank 2 near the first tank 1 has a first baffle groove 14, and the surface of the connecting tank 2 near the second tank 3 has a second baffle groove 15. The bottom surface of the connecting tank 2 has two first connecting pipes 16, and the bottom of the two first connecting pipes 16 has a second connecting pipe 17. The bottom surfaces of both the first tank 1 and the second tank 3 have two bases 13. The side of the first tank 1 away from the connecting tank 2 has a first end cap 4. The second tank 3 has a second end cap 5 on the side away from the connecting tank 2. The side of the first end cap 4 has a liquid inlet 6, and the side of the second end cap 5 has a gas outlet 7. Both the top surfaces of the first tank 1 and the second tank 3 have water inlets 8 near the first end cap 4, and water outlets 9 near the second end cap 5. Both the first tank 1 and the second tank 3 have two tube racks 10 inside. Both the first tank 1 and the second tank 3 have baffles 11 arranged in a cross-array inside. Both the first tank 1 and the second tank 3 have heat exchange tubes 12 arranged in a circumferential array inside. Both the first tank 1 and the second tank 3... The first end cap 4 is connected to the flange of the connecting tank 2, and the second end cap 5 is connected to the flange of the second tank 3. The first end cap 4 and the first baffle 14 are mirror images of the first tank 1, and the second end cap 5 and the second baffle 15 are mirror images of the second tank 3. The two bases 13 on the bottom surfaces of the first tank 1 and the second tank 3 are located at both ends of the first tank 1 and the second tank 3, and the two bases 13 on the bottom surfaces of the first tank 1 and the second tank 3 are welded to the first tank 1 and the second tank 3. The two first connecting pipes 16 are welded to the connecting tank 2. Both are located at the bottom of the first baffle 14 and the second baffle 15. Both first connecting pipes 16 are connected to the first baffle 14 and the second baffle 15. Both ends of the second connecting pipe 17 are connected to the flanges of the two first connecting pipes 16. The two tube supports 10 inside the first tank 1 and the second tank 3 are evenly located at both ends inside the first tank 1 and the second tank 3. The baffle plates 11 inside the first tank 1 and the second tank 3 are located in the middle of the two tube supports 10. The heat exchange tubes 12 inside the first tank 1 and the second tank 3 pass through the two tube supports 10 and the baffle plates 11 inside the first tank 1 and the second tank 3.

[0025] The first tank 1 and the second tank 3 are the main spaces for liquid heat exchange. Both the first tank 1 and the second tank 3 have heat exchange tubes 12 arranged in a circumferential array inside. Each tank also has two tube supports 10, evenly distributed at both ends inside, to support the heat exchange tubes 12, ensuring their stable position and normal operation. Baffles 11 are arranged in a crisscrossing array inside the first tank 1 and the second tank 3, located between the two tube supports 10. Their function is to change the flow direction of the fluid within the tank, increasing the turbulence and improving heat exchange efficiency, while also supporting the heat exchange tubes 12. Inlets 8 are located at the left end of the top surface of the first tank 1 and the second tank 3 to introduce higher-temperature heat transfer fluid or high-temperature heat sources to provide heat to the liquid; outlets 9 are located at the right end of the top surface of both the first tank 1 and the second tank 3 to discharge the heat transfer fluid or high-temperature heat sources after heat exchange. Two bases 13 are provided on the bottom surface of both the first tank 1 and the second tank 3, located at both ends of the tank and welded to the tank body, to support the entire equipment and ensure its stability. The first end cap 4 has a liquid inlet 6 on its side, which is the inlet for the liquid requiring reboiling to enter the first tank 1; the second end cap 5 has a vent 7 on its side, which is the outlet for the liquid after it has been heated to vaporization inside the second tank 3. The first end cap 4 is flanged to the first tank 1, and the second end cap 5 is flanged to the second tank 3, facilitating the installation, disassembly, and maintenance of the equipment. A connecting tank 2 connects the first tank 1 and the second tank 3, and has a first baffle 14 and a second baffle 15 inside to change the flow path of the liquid. A first connecting pipe 16 is provided on the bottom surface of the first baffle 14 and the second baffle 15, and is connected to the first baffle 14 and the second baffle 15 for discharging and introducing liquid; a second connecting pipe 17 is provided at the bottom of the two first connecting pipes 16 for connecting the two first connecting pipes 16, so as to realize the conveying of liquid in the first baffle 14 and the second baffle 15 in the connecting tank 2. Specific Implementation Example 2:

[0027] Reference Figures 1-5A modular multi-stage heat exchange reboiler, further based on the basic structure in Specific Embodiment 1, allows the liquid requiring reboiling to enter the first tank 1 through the inlet 6 of the first end cap 4 and flow into the heat exchange tube 12 inside the first tank 1. Simultaneously, a higher-temperature heat exchanger enters the tank through the inlet 8 on the top surface of the first tank 1, exchanging heat with the liquid inside the heat exchange tube 12 outside the tube, preheating the liquid to a certain temperature. The preheated heat exchanger is discharged from the outlet 9 at the right end of the top surface of the first tank 1. Since the connecting tank 2 is connected to the first tank 1 and the second tank 3 via flanges and sealed with sealing rings, the preheated liquid enters the first baffle trough 14 inside the connecting tank 2, then exits through the first connecting pipe 16 at the bottom of the first baffle trough 14, and is then transported through the second connecting pipe 17 to the first connecting pipe 16 at the bottom of the second baffle trough 15, and finally enters the second baffle trough 15 of the connecting tank 2. Liquid flows from the second baffle 15 into the heat exchange tube 12 inside the second tank body 3, which is connected to the connecting tank 2. At this time, a high heat source enters the second tank body 3 from the inlet 8 on the top surface, and undergoes secondary heat exchange with the preheated liquid within the heat exchange tube 12. Because the liquid has been preheated, the temperature difference between it and the high heat source is reduced, thereby reducing thermal stress. Finally, the liquid is heated to vaporization by the high heat source in the heat exchange tube 12 inside the second tank body 3 and discharged through the vent 7 on the side of the second end cap 5. The high heat source, after heat exchange, is discharged from the outlet 9 at the right end of the top surface of the second tank body 3. This multi-stage heat exchange method with a preheating stage solves the problem of traditional reboilers lacking an effective material preheating stage.

[0028] In summary:

[0029] 1. The reboiler introduces the liquid to be reboiled into the heat exchange tube 12 inside the first tank 1 through the inlet 6 of the first end cap 4. Simultaneously, a higher-temperature heat source enters from the water inlet 8 of the first tank 1, exchanging heat with the liquid inside the heat exchange tube 12, thus preheating the liquid. Because the connecting tank 2 is flange-connected and sealed to both the first tank 1 and the second tank 3, the preheated liquid sequentially passes through the first baffle 14, the first connecting pipe 16, the second connecting pipe 17, and back to the first connecting pipe 16 before entering the second baffle 15 and then flowing into the heat exchange tube 12 of the second tank 3. At this point, a high-temperature heat source enters from the water inlet 8 on the top surface of the second tank 3, exchanging heat with the preheated liquid, reducing thermal stress. Finally, the liquid is heated to vaporization in the heat exchange tube 12 of the second tank 3 and discharged through the outlet 7, solving the problem of traditional reboilers lacking an effective material preheating stage.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A modular multi-stage heat exchanger-reboiler, comprising a first tank (1), characterized in that: A connecting tank (2) is provided on one side of the first tank (1), and a second tank (3) is provided on the side of the connecting tank (2) away from the first tank (1). A first baffle groove (14) is provided on the surface of the connecting tank (2) near the first tank (1), and a second baffle groove (15) is provided on the surface of the connecting tank (2) near the second tank (3). Two first connecting pipes (16) are provided on the bottom surface of the connecting tank (2), and a second connecting pipe (17) is provided at the bottom of the two first connecting pipes (16). Two bases (13) are provided on the bottom surfaces of both the first tank (1) and the second tank (3). A first end cap (4) is provided on the side of the first tank (1) away from the connecting tank (2), and the second tank (3)... A second end cap (5) is provided on the side away from the connecting tank (2). A liquid inlet (6) is provided on the side of the first end cap (4). An air outlet (7) is provided on the side of the second end cap (5). A water inlet (8) is provided on the side of the top surface of the first tank (1) and the second tank (3) near the first end cap (4). A water outlet (9) is provided on the side of the top surface of the first tank (1) and the second tank (3) near the second end cap (5). Two tube racks (10) are provided inside the first tank (1) and the second tank (3). Baffles (11) are arranged in an array and cross pattern inside the first tank (1) and the second tank (3). Heat exchange tubes (12) are arranged in a circular array inside the first tank (1) and the second tank (3).

2. The multi-stage heat exchanger-reboiler with modular combination according to claim 1, characterized in that: The first tank (1) and the second tank (3) are both connected to the flange of the connecting tank (2). The first end cap (4) is connected to the flange of the first tank (1), and the second end cap (5) is connected to the flange of the second tank (3). The first end cap (4) and the first baffle (14) are mirror images of the first tank (1), and the second end cap (5) and the second baffle (15) are mirror images of the second tank (3).

3. A multi-stage heat exchanger-reboiler with modular assembly according to claim 1, characterized in that: The two bases (13) on the bottom surface of the first tank (1) and the second tank (3) are both located at both ends of the first tank (1) and the second tank (3), and the two bases (13) on the bottom surface of the first tank (1) and the second tank (3) are welded to the first tank (1) and the second tank (3).

4. A multi-stage heat exchanger-reboiler with modular combination according to claim 1, characterized in that: Both first connecting pipes (16) are welded to the connecting tank (2), and both first connecting pipes (16) are located at the bottom of the first baffle (14) and the second baffle (15). Both first connecting pipes (16) are connected to the first baffle (14) and the second baffle (15). Both ends of the second connecting pipe (17) are connected to the flanges of the two first connecting pipes (16).

5. A multi-stage heat exchanger-reboiler with modular combination according to claim 1, characterized in that: Two tube racks (10) inside the first tank (1) and the second tank (3) are evenly arranged at both ends inside the first tank (1) and the second tank (3).

6. A multi-stage heat exchanger-reboiler with modular combination according to claim 1, characterized in that: The baffles (11) inside the first tank (1) and the second tank (3) are both located in the middle of the two pipe racks (10).

7. A multi-stage heat exchanger-reboiler with modular assembly according to claim 1, characterized in that: The heat exchange tubes (12) inside the first tank (1) and the second tank (3) both penetrate the two tube racks (10) and the baffles (11) inside the first tank (1) and the second tank (3).

Images