A carbon dioxide reboiler apparatus

Abstract

This utility model discloses a carbon dioxide reboiler device, including a support frame and a reboiler tube fixedly installed on the upper part of the support frame; a tube sheet, with the reboiler tube sealed on both sides, and several pipes for transmitting the heating medium inside the tube sheet, and a heating cavity for transmitting the heated medium formed between the reboiler tube and the tube sheet; and multiple guide plates, which are fixedly installed inside the reboiler tube, with adjacent guide plates rotated by 180 degrees. Each guide plate has a through hole formed with the reboiler tube, and the multiple guide plates, together with the cavity of the reboiler tube, form a corrugated heating channel. This utility model, through the staggered rotating guide plates and corrugated heating channel inside the reboiler tube, causes the heating medium to be deflected and rotated when flowing through the reboiler tube, prolonging the residence time and improving the heat exchange area utilization rate, thereby achieving rapid and uniform heating of the heated medium, improving the carbon dioxide desorption efficiency and the heating effect of the reboiler.

Description

Technical Field

[0001] This utility model belongs to the field of reboiler technology, and in particular relates to a carbon dioxide reboiler device. Background Technology

[0002] A carbon dioxide reboiler is a key heat exchange device specifically used in the process of carbon dioxide capture, separation and utilization. It is mainly installed at the bottom of an absorption tower or desorption tower. By applying heat to the carbon dioxide-rich absorbent, the carbon dioxide dissolved in it is desorbed and rises with the steam into the tower to complete the separation, thereby realizing the recycling and regeneration of the solution and the efficient recovery of carbon dioxide.

[0003] However, existing technologies have some problems: In actual operation, the water heating channel of the reboiler is arranged vertically. Although this can reduce the equipment footprint and structural complexity to a certain extent, the straight flow of water in the transverse channel leads to a significant reduction in the contact time between the heat transfer medium and the heated surface, resulting in insufficient heat exchange residence and poor heating effect. This fails to fully meet the heat supply required for carbon dioxide desorption, thus affecting the carbon dioxide desorption efficiency and the overall energy consumption ratio of the system. Therefore, we propose a carbon dioxide reboiler device. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a carbon dioxide reboiler device.

[0005] This invention is implemented as follows: a carbon dioxide reboiler device includes a support frame and a reboiler tube, which is fixedly installed on the upper part of the support frame; a tube sheet, on both sides of which the reboiler tube is blocked, and the tube sheet has a plurality of pipes for transmitting heating medium inside, and a heating cavity for transmitting the heated medium is formed between the reboiler tube and the tube sheet; and multiple guide plates, which are fixedly installed inside the reboiler tube; adjacent guide plates are obtained by rotating 180 degrees, each guide plate has a through hole formed with the reboiler tube, and the multiple guide plates cooperate with the cavity of the reboiler tube to form a wave-shaped heating channel.

[0006] In a preferred embodiment of this invention, the support frame includes a base plate, and a bracket is fixedly installed on the upper part of the support plate fixed on the base plate, and the reboiling tube is welded and fixed to the upper part of the bracket.

[0007] As a preferred embodiment of this invention, a first input pipe is fixedly installed on the lower part of one side of the reboiler tube, and a first output pipe is fixedly installed on the upper part of one side of the reboiler tube. The first input pipe is used to connect to the pipeline of the heated medium.

[0008] As a preferred embodiment of this utility model, the guide plate is inclined, and the adjacent guide plates are inclined in opposite directions. When the heated medium passes through the guide plate, part of the medium flows back, thereby achieving a further and more thorough heating of the heated medium.

[0009] As a preferred embodiment of this utility model, a tube box is fixedly installed on one side of the reboiler tube, a gasket is clamped between the tube box and the reboiler tube, a partition fixed in the middle of the tube box divides the tube box into two transmission cavities, a second input pipe fixedly installed on the upper part of the tube box communicates with one of the transmission cavities of the tube box, and a second output pipe fixedly installed on the lower part of the tube box communicates with the other transmission cavity of the tube box.

[0010] As a preferred embodiment of this invention, a hook ring is fixedly inserted into the other side of the reboiler tube. The hook ring is sleeved on the outside of one side of the tube sheet. An outer cap fixedly installed on the other side of the reboiler tube limits and fixes the hook ring. A float head is fixedly installed on one side of the hook ring. The float head is located inside the outer cap. In use, the heating medium is input through the second input pipe, passes through the upper part of the tube sheet, the float head, and the lower part of the tube sheet, and is then transmitted out through the second output pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention significantly alters the original flow pattern of the heating medium by incorporating multiple guide vanes inside the reboiling tube and arranging them in a staggered 180-degree rotation. This causes the fluid to continuously undergo deflection and rotation as it passes through the reboiling tube. Simultaneously, the heating cavity formed between the reboiling tube and the tube sheet provides a uniform heat exchange space for the heated medium. The heating medium enters the cavity surrounding the reboiling tube through a pipe within the tube sheet. As it flows along the wavy heating channel, the guide vanes create a tortuous, rotating, and turbulent effect, extending the residence time of the medium as it flows through the reboiling tube. This increases the utilization rate of the heat exchange surface area and ensures more complete heat transfer, thereby achieving rapid and uniform heating of the heated medium, improving carbon dioxide desorption efficiency, and enhancing the overall heating effect of the reboiler. Furthermore, the staggered arrangement of the guide vanes and the wavy channel design help reduce problems such as excessively high local flow velocities and insufficient heat exchange, ensuring system operational stability and energy efficiency optimization. This allows the device to achieve both high efficiency and reliability in carbon dioxide capture and recycling. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the reboiling tube provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of the overall exploded structure provided in an embodiment of the present utility model; Figure 4This is provided by the embodiment of the present utility model. Figure 3 Schematic diagram of the structure at point A in the middle.

[0013] In the diagram: 1. Base plate; 2. Support plate; 3. Bracket; 4. Reboiler tube; 5. First output tube; 6. First input tube; 7. Tube sheet; 8. Guide plate; 9. Tube box; 10. Outer cover; 11. Second input tube; 12. Second output tube; 13. Baffle; 14. Gasket; 15. Hook ring; 16. Float head. Detailed Implementation

[0014] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0015] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0016] like Figures 1 to 4 As shown, the present invention provides a carbon dioxide reboiler device, including a support frame and a reboiler tube 4, which is fixedly installed on the upper part of the support frame; a tube sheet 7, which seals the reboiler tube 4 on both sides, and has a plurality of pipes for transmitting heating medium inside the tube sheet 7, and a heating cavity for transmitting the heated medium is formed between the reboiler tube 4 and the tube sheet 7; and multiple guide plates 8, which are fixedly installed inside the reboiler tube 4; adjacent guide plates 8 are obtained by rotating 180 degrees, and each guide plate 8 has a through hole formed with the reboiler tube 4, and the multiple guide plates 8 cooperate with the cavity of the reboiler tube 4 to form a wave-shaped heating channel.

[0017] The aforementioned carbon dioxide reboiler device significantly alters the original flow state of the heating medium by setting multiple guide plates 8 inside the reboiler tube 4 and arranging them in a staggered 180-degree rotation. This causes the fluid to continuously undergo deflection and rotation as it passes through the reboiler tube 4. At the same time, the heating cavity formed between the reboiler tube 4 and the tube sheet 7 provides a uniform heat exchange space for the heated medium. The heating medium enters the cavity surrounding the reboiler tube 4 through the pipes inside the tube sheet 7. When it flows along the wavy heating channel, it is guided by the guide plate 8 to form a tortuous, rotating and turbulent effect, which prolongs the residence time of the medium in the process of flowing through the reboiler tube 4, improves the heat exchange surface area utilization rate, and makes the heat transfer more complete. This enables the heated medium to heat up quickly and uniformly, improves the carbon dioxide desorption efficiency, and improves the overall heating effect of the reboiler. In addition, the staggered arrangement of the eight guide vanes and the wave-shaped channel design help to solve the problems of excessive local flow velocity and insufficient heat exchange.

[0018] In this embodiment, the support frame includes a base plate 1, a support plate 2 fixed on the base plate 1 with a bracket 3 fixedly installed on the upper part, a reboiling tube 4 welded and fixed on the upper part of the bracket 3, a first input pipe 6 fixedly installed on the lower part of one side of the reboiling tube 4, and a first output pipe 5 fixedly installed on the upper part of one side of the reboiling tube 4. The first input pipe 6 is used to connect to the heating medium pipeline. The guide plate 8 is inclined, and the adjacent guide plates 8 are inclined in opposite directions. When the heating medium passes through the guide plate 8, part of the medium flows back, realizing the further full heating action of the heating medium.

[0019] The support frame provides overall support and positioning, with the base plate 1 bearing the entire structure, the support plate 2 having the bracket 3 fixedly installed on the upper part, and the reboiling tube 4 welded to the upper part of the bracket 3 to ensure stable installation. Meanwhile, a first input pipe 6 is provided at the lower part of one side of the reboiling tube 4 to connect to the heated medium pipeline, and a first output pipe 5 is provided at the upper part for the discharge of the medium, forming a complete heating circuit; Multiple guide plates 8 are inclinedly arranged inside the reboiling tube 4, and adjacent guide plates 8 are inclined in opposite directions. This causes the heated medium to continuously generate baffles and local backflow when flowing through the reboiling tube 4, changing the original straight flow state, prolonging the residence time of the medium in the heating channel, and increasing the contact area between the fluid and the tube wall, thereby achieving full heat transfer and uniform heating. In addition, the guide plate 8 guides the medium to partially flow back, allowing the medium in the low-temperature zone to re-contact with the high-temperature zone, further improving the heating efficiency, effectively improving the problem of insufficient heating caused by the original excessive flow rate, ensuring that the heated medium fully absorbs heat, improving the carbon dioxide desorption efficiency and the overall operational stability and energy efficiency of the reboiler.

[0020] In this embodiment, a tube box 9 is fixedly installed on one side of the reboiler tube 4, and a gasket 14 is clamped between the tube box 9 and the reboiler tube 4. A partition 13 fixed in the middle of the tube box 9 divides the tube box 9 into two transmission cavities. A second input tube 11 fixedly installed on the upper part of the tube box 9 communicates with one of the transmission cavities of the tube box 9, and a second output tube 12 fixedly installed on the lower part of the tube box 9 communicates with the other transmission cavity of the tube box 9. A hook ring 15 is fixedly inserted and installed on the other side of the reboiler tube 4. The hook ring 15 is sleeved on the outside of one side of the tube plate 7. An outer cap 10 fixedly installed on the other side of the reboiler tube 4 limits and fixes the hook ring 15. A float head 16 is fixedly installed on one side of the hook ring 15 and is located inside the outer cap 10. In use, the heating medium is input through the second input tube 11, passes through the upper part of the tube plate 7, the float head 16, and the lower part of the tube plate 7, and is then transmitted out through the second output tube 12.

[0021] The efficient transmission and heat exchange of the heating medium are achieved through the tube box 9 fixedly installed on one side of the reboiling tube 4 and its internal structure.

[0022] The tube box 9 is clamped and installed with the reboiler tube 4 by the gasket 14 to ensure sealing and stability; the partition 13 in the middle of the tube box 9 divides the tube box 9 into upper and lower transmission chambers. The upper transmission chamber is connected to the second input pipe 11 fixed on the upper part of the tube box 9, and the lower transmission chamber is connected to the second output pipe 12 fixed on the lower part of the tube box 9, forming the inlet and outlet passage of the heating medium. When the heating medium enters the tube box 9 through the second input pipe 11, it first flows into the upper transmission cavity, is transferred through the upper part of the tube sheet 7 to the cavity where the float 16 is located, and then passes through the guide of the float 16 and the path of the lower part of the tube sheet 7, so that the medium can fully flow around and deflect, increasing the contact time and heat transfer area with the heating surface of the reboiling tube 4, thereby achieving full heating of the medium. On the other side of the reboiler tube 4, the hook ring 15 is fitted onto the outside of one side of the tube sheet 7. The outer cap 10 limits and fixes the hook ring 15, and the floating head 16 guides the fluid inside the outer cap 10, ensuring stable fluid flow and preventing leakage. During the heating process, the flow rate of the medium is reasonably regulated by the deflection and distribution of the tube sheet 7 and the floating head 16, while ensuring uniform heat transfer. Finally, the heat is output through the second output tube 12, achieving efficient heat transfer and fully heating the heated medium, while improving the overall operational stability of the reboiler and the carbon dioxide desorption efficiency.

[0023] The working principle of this utility model: In operation, by setting multiple guide plates 8 inside the reboiling tube 4 and arranging them in a staggered 180-degree rotation, the original flow state of the heating medium is significantly changed. This causes the fluid to continuously undergo deflection and rotation as it passes through the reboiling tube 4. At the same time, the heating cavity formed between the reboiling tube 4 and the tube sheet 7 provides a uniform heat exchange space for the heated medium. The heating medium enters the cavity surrounding the reboiling tube 4 through the pipes inside the tube sheet 7. As it flows along the wavy heating channel, it is guided by the guide plates 8 to form a tortuous, rotating, and turbulent effect. This prolongs the residence time of the medium as it flows through the reboiling tube 4, improves the utilization rate of the heat exchange surface area, and makes the heat transfer more complete. This results in rapid and uniform heating of the heated medium, improves the carbon dioxide desorption efficiency, and improves the overall heating effect of the reboiler. In addition, the staggered arrangement of the guide plates 8 and the wavy channel design help to reduce the problem of excessively high local flow velocity and insufficient heat exchange.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carbon dioxide reboiler apparatus, comprising a support frame, characterized in that, Also includes: Reboiler tube (4), which is fixedly installed on the upper part of the support frame; Tube sheet (7), the reboiler tube (4) is sealed on both sides of the tube sheet (7), and the tube sheet (7) is provided with a plurality of pipes for transmitting heating medium, and a heating cavity for transmitting the heated medium is formed between the reboiler tube (4) and the tube sheet (7); A guide plate (8) is provided, and multiple guide plates (8) are fixedly installed inside the reboiling tube (4); and adjacent guide plates (8) are obtained by rotating 180 degrees. Each guide plate (8) is formed with a through hole in the reboiling tube (4), and a number of guide plates (8) are formed with the cavity of the reboiling tube (4) to form a wave-shaped heating channel.

2. The carbon dioxide reboiler apparatus as described in claim 1, characterized in that: The support frame includes a base plate (1), and a bracket (3) is fixedly installed on the upper part of a support plate (2) fixed on the base plate (1). The reboiling tube (4) is welded and fixed on the upper part of the bracket (3).

3. The carbon dioxide reboiler apparatus as described in claim 1, characterized in that: A first input pipe (6) is fixedly installed on the lower part of one side of the reboiler tube (4), and a first output pipe (5) is fixedly installed on the upper part of one side of the reboiler tube (4). The first input pipe (6) is used to connect to the pipeline of the heated medium.

4. The carbon dioxide reboiler apparatus as described in claim 1, characterized in that: The guide plate (8) is inclined, and the adjacent guide plates (8) are inclined in opposite directions. When the heated medium passes through the guide plate (8), part of the medium flows back, thereby achieving a further full heating action of the heated medium.

5. A carbon dioxide reboiler apparatus as described in claim 1, characterized in that: A tube box (9) is fixedly installed on one side of the reboiler tube (4). A gasket (14) is clamped between the tube box (9) and the reboiler tube (4). A partition (13) fixed in the middle of the tube box (9) divides the tube box (9) into two transmission cavities. A second input pipe (11) fixedly installed on the upper part of the tube box (9) communicates with one of the transmission cavities of the tube box (9). A second output pipe (12) fixedly installed on the lower part of the tube box (9) communicates with the other transmission cavity of the tube box (9).

6. The carbon dioxide reboiler apparatus as described in claim 5, characterized in that: A hook ring (15) is fixedly inserted into the other side of the reboiler tube (4). The hook ring (15) is sleeved on the outside of one side of the tube sheet (7). The outer cap (10) fixedly installed on the other side of the reboiler tube (4) limits and fixes the hook ring (15). A float head (16) is fixedly installed on one side of the hook ring (15). The float head (16) is located inside the outer cap (10). In use, the heating medium is input through the second input pipe (11), and after passing through the upper part of the tube sheet (7), the float head (16), and the lower part of the tube sheet (7), it is transmitted out through the second output pipe (12).

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