Reboiler for heating and purifying chemical materials

Abstract

The utility model discloses a reboiler for chemical material heating and purification, including shell and the pipe box of being connected in the shell one end, the inside of pipe box and the horizontal fixed baffle between pipe plate, the top and bottom of pipe box are connected with hot material input pipe and hot material output pipe respectively, and the inside of hot material input pipe is provided with the heat exchange pipe of vertical through baffle and pipe box, and the both ends of heat exchange pipe respectively through the lateral wall of hot material input pipe and hot material output pipe and extend out and connect with the connecting pipe is linked. The utility model liquid is input through cold material liquid inlet pipe, and after entering the shell in turn through preheating pipe, connecting pipe, heat exchange pipe, connecting pipe and cold material input pipe, make full use of the heat energy and waste heat of hot material, heat the liquid and heat up through the heat inside shell and the heat in pipe box, hot material input pipe and hot material output pipe, make that the energy required for liquid to reach boiling point in shell is smaller, and the time required is shorter, reach scientific improvement efficiency, energy -conserving environmental protection's effect.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical heat exchange equipment, specifically a reboiler for heating and purifying chemical materials. Background Technology

[0002] A reboiler, also known as an evaporator, is a heat exchanger that provides heat to the bottom of a distillation or rectification column during the heating and purification of chemical materials. It boils the liquid material to generate steam, which is then returned to the column to drive the distillation or rectification separation process. It can partially or completely evaporate the liquid collected from the bottom of the column.

[0003] Reboilers are commonly classified into vertical and horizontal reboilers based on their installation structure. Existing horizontal reboilers directly input relatively low-temperature liquids into the shell, and heat the liquid to generate steam through circulating hot materials. Since heating is a process, steam can only be generated quickly when the boiling point is reached. The temperature of the liquid is relatively low before it reaches the shell, and the temperature gradually decreases during the transportation process. Therefore, directly inputting the liquid into the reboiler shell increases the required heating time, resulting in long steam generation time and low efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a reboiler for heating and purifying chemical materials, which solves the problem that existing horizontal reboilers, which directly input relatively low-temperature liquids into the shell, result in long steam generation times and low efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A reboiler for heating and purifying chemical materials includes a shell and a tube box connected to one end of the shell. Tube sheets are fixed to one end of the shell corresponding to the tube box and the other end of the shell facing away from the tube box. A tube bundle is connected between the two tube sheets. A floating head is connected to the end of the tube sheet inside the shell facing away from the tube bundle.

[0007] A partition is horizontally fixed between the inside of the tube box and the tube sheet. A hot material input pipe and a hot material output pipe are connected to the top and bottom of the tube box, respectively. A heat exchange pipe is vertically installed inside the hot material input pipe, penetrating the partition and the tube box. Both ends of the heat exchange pipe penetrate the side walls of the hot material input pipe and the hot material output pipe and extend out to connect with the connecting pipe.

[0008] A cold material input pipe is connected to one end of the connecting pipe corresponding to the hot material input pipe. The cold material input pipe is connected to the top of the shell near the pipe box. A steam output pipe is connected to the top of the shell. A preheating pipe is horizontally arranged at the bottom of the shell. Heat-conducting plates are fixed at equal intervals on the surface of the preheating pipe. The heat-conducting plates are fixed to the bottom of the shell, and one end of the preheating pipe is connected to a cold material inlet pipe.

[0009] Preferably, a weir plate is vertically connected to the bottom of the inner wall of the shell at a position on the side of the float head, and a level gauge is connected to the outer wall of the shell on the side of the weir plate away from the float head.

[0010] Preferably, the heat exchange tube, connecting tube, cold material input tube, preheating tube, and cold material liquid inlet tube are welded and fixed in sequence.

[0011] Preferably, a flange is provided in the middle of the connecting pipe, and the left and right parts of the connecting pipe are connected and fixed by the flange and bolts and nuts.

[0012] Preferably, the cold material input pipe is vertically connected to the outer wall of the housing and corresponds to one end surface of the tube bundle near the tube box.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention introduces a liquid that is fed into the shell through a cold material inlet pipe, passes through a preheating pipe, a connecting pipe, a heat exchange pipe, another connecting pipe, and a cold material inlet pipe before entering the shell. It makes full use of the thermal energy and residual heat of the hot material, and heats the liquid by the heat inside the shell as well as the heat in the pipe box, the hot material inlet pipe, and the hot material outlet pipe. This reduces the energy required for the liquid to reach its boiling point in the shell and shortens the time required, thus achieving the effect of scientifically improving efficiency and saving energy and protecting the environment. Attached Figure Description

[0015] Figure 1 This is a front view of the present utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 3 This is the right view of the present invention.

[0018] In the diagram: 1. Shell; 2. Tube box; 3. Tube sheet; 4. Tube bundle; 5. Float head; 6. Baffle; 7. Hot material inlet pipe; 8. Hot material outlet pipe; 9. Heat exchanger tube; 10. Connecting pipe; 1001. Flange; 11. Cold material inlet pipe; 12. Steam outlet pipe; 13. Preheating pipe; 14. Heat transfer plate; 15. Cold material inlet pipe; 16. Weir plate; 17. Level gauge. Detailed Implementation

[0019] 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.

[0020] like Figure 1-3 As shown, this utility model provides a technical solution: a reboiler for heating and purifying chemical materials, including a shell 1 and a tube box 2 connected to one end of the shell 1. Tube plates 3 are fixed at one end of the shell 1 corresponding to the tube box 2 and at the end inside the shell 1 away from the tube box 2. A tube bundle 4 is connected between the two tube plates 3. A float head 5 is connected at the end of the tube plate 3 inside the shell 1 away from the tube bundle 4. A weir plate 16 is vertically connected at the bottom of the inner wall of the shell 1 at the position on one side of the float head 5. A level gauge 17 is connected on the outer wall of the shell 1 on the side of the weir plate 16 away from the float head 5.

[0021] A partition 6 is horizontally fixed between the inside of the tube box 2 and the tube sheet 3. The top and bottom of the tube box 2 are respectively connected to a hot material input pipe 7 and a hot material output pipe 8. A heat exchange pipe 9 is vertically installed inside the hot material input pipe 7, which penetrates the partition 6 and the tube box 2. Both ends of the heat exchange pipe 9 penetrate the side walls of the hot material input pipe 7 and the hot material output pipe 8 and extend out to connect with the connecting pipe 10. A flange 1001 is installed in the middle of the connecting pipe 10. The left and right parts of the connecting pipe 10 are connected and fixed by the flange 1001 and bolts and nuts.

[0022] One end of the connecting pipe 10 corresponding to the hot material input pipe 7 is connected to the cold material input pipe 11. The cold material input pipe 11 is vertically connected to the outer wall of the shell 1 and corresponds to the end surface of the tube bundle 4 near the tube box 2. The cold material input pipe 11 is connected to the top of the shell 1 near the tube box 2. The top of the shell 1 is connected to the steam output pipe 12.

[0023] A preheating pipe 13 is horizontally arranged at the bottom of the shell 1. A heat-conducting plate 14 is fixed at equal intervals on the surface of the preheating pipe 13. The heat-conducting plate 14 is fixed at the bottom of the shell 1, and one end of the preheating pipe 13 is connected to a cold material inlet pipe 15. The heat exchange pipe 9, the connecting pipe 10, the cold material input pipe 11, the preheating pipe 13 and the cold material inlet pipe 15 are welded and fixed in sequence.

[0024] Working principle:

[0025] The hot material used to provide heat is injected through the hot material inlet pipe 7, passes through the area above the partition 6 inside the tube box 2, and then laterally passes through the upper half of the tube bundle 4 to reach the floating head 5. It then flows back inside the floating head 5, laterally passes through the lower half of the tube bundle 4 to reach the area below the partition 6 inside the tube box 2, and flows out through the hot material outlet pipe 8, where it is heated and circulated by the heating equipment. The liquid is input through the cold material inlet pipe 15, passes sequentially through the preheating pipe 13, connecting pipe 10, heat exchange pipe 9, and cold material inlet pipe 11 before entering the shell 1. The heat inside the shell 1 heats the heat-conducting plate 14 and the preheating pipe 13, preheating the liquid inside the preheating pipe 13. Then, the heat in the pipe box 2, the hot material input pipe 7, and the hot material output pipe 8 directly heats the heat exchange pipe 9, reheating the liquid inside the heat exchange pipe 9. This heats the liquid entering the shell 1, making full use of the thermal energy and residual heat of the hot material. This reduces the energy required for the liquid to reach its boiling point in the shell 1 and shortens the time required, thus achieving the effect of scientifically improving efficiency and saving energy and protecting the environment.

[0026] It should be noted that, in this document, terms such as “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.

[0027] 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 reboiler for heating and purifying chemical materials, comprising a shell (1) and a tube box (2) connected to one end of the shell (1), characterized in that: The shell (1) is fixed with a tube plate (3) at one end corresponding to the tube box (2) and at the end inside that is away from the tube box (2). A tube bundle (4) is connected between the two tube plates (3). A floating head (5) is connected to the end of the tube plate (3) inside the shell (1) that is away from the tube bundle (4). A partition (6) is horizontally fixed between the inside of the tube box (2) and the tube sheet (3). The top and bottom of the tube box (2) are respectively connected to a hot material input pipe (7) and a hot material output pipe (8). A heat exchange pipe (9) is vertically installed inside the hot material input pipe (7) that penetrates the partition (6) and the tube box (2). Both ends of the heat exchange pipe (9) penetrate the side walls of the hot material input pipe (7) and the hot material output pipe (8) and extend out to connect with the connecting pipe (10). A cold material input pipe (11) is connected to one end of the connecting pipe (10) corresponding to the hot material input pipe (7). The cold material input pipe (11) is connected to the top of the shell (1) near the pipe box (2). A steam output pipe (12) is connected to the top of the shell (1). A preheating pipe (13) is horizontally arranged at the bottom of the shell (1). A heat-conducting plate (14) is fixed at equal intervals on the surface of the preheating pipe (13). The heat-conducting plate (14) is fixed to the bottom of the shell (1), and a cold material inlet pipe (15) is connected to one end of the preheating pipe (13).

2. The reboiler for heating and purifying chemical materials according to claim 1, characterized in that: A weir plate (16) is vertically connected to the bottom of the inner wall of the shell (1) at the position on the side of the float (5). A level gauge (17) is connected to the outer wall of the shell (1) on the side of the weir plate (16) away from the float (5).

3. A reboiler for heating and purifying chemical materials according to claim 1, characterized in that: The heat exchange tube (9), connecting tube (10), cold material input tube (11), preheating tube (13) and cold material liquid inlet tube (15) are welded and fixed in sequence.

4. A reboiler for heating and purifying chemical materials according to claim 1, characterized in that: A flange (1001) is provided in the middle of the connecting pipe (10), and the left and right parts of the connecting pipe (10) are connected and fixed by the flange (1001) and bolts and nuts.

5. A reboiler for heating and purifying chemical materials according to claim 1, characterized in that: The cold material input pipe (11) is vertically connected to the outer wall of the shell (1) and corresponds to the end surface of the tube bundle (4) near the tube box (2).

Images