Tube bundle reactor cooled by pressure liquid

Abstract

The utility model discloses a tube bundle reactor cooled by pressure liquid, which mainly comprises a tube body shell, a reaction tube bundle inner tube and a heat conduction tube, the heat conduction tube is positioned between the tube body shell and the reaction tube bundle inner tube, and the outer surface of the heat conduction tube is attached to the outer wall surface of the reaction tube bundle inner tube. A medium inlet end is arranged on the upper surface of the pipe body shell, a first medium connecting pipe is fixedly connected to the bottom end of the medium inlet end, the end, away from the medium inlet end, of the first medium connecting pipe communicates with the heat conduction pipe, the first medium connecting pipe is in a spiral shape, and a medium outlet end is arranged on the outer surface of the pipe body shell. The impact of instant heat release on the heat conduction pipe and the inner pipe of the reaction pipe bundle is avoided while strong exothermic reaction mixing is protected, the fluency of a cooling medium is improved, the retention time of the cooling medium in the heat conduction pipe is prolonged, and the overall performance and the operation stability of the reactor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bundle tube reactor devices, in particular to a pressure liquid-cooled bundle tube reactor. Background Art

[0002] The pressurized liquid-cooled tube bundle reactor is a common reactor device, which is mainly used in various chemical reaction processes such as oxidation, hydrogenation, polymerization, etc. in the chemical and petrochemical industries.

[0003] Problems can arise particularly in highly exothermic and temperature-sensitive reactions, such as traditional ammonia and methanol synthesis. For example, at atmospheric pressure, the boiling point of the cooling liquid is relatively low, making it prone to vaporization. However, at higher pressures, the boiling point of the cooling liquid increases significantly, maintaining its liquid state and improving heat transfer efficiency. If a large amount of heat is generated during the reaction, the cooling liquid may partially vaporize at atmospheric pressure. This vaporization can cause poor flow of the cooling liquid, reducing heat transfer efficiency. When adding cooling medium to a traditional tube bundle reactor, the heat transfer pipes are generally several interconnected straight tubes that cool the reactants within the reactor bundle. However, the cooling medium may reside in the heat transfer pipes too briefly, reducing the cooling effect. Furthermore, during the mixing of highly exothermic reactions, the instantaneous heat release impacts the heat transfer pipes and the reactor bundle tubes, causing them to vibrate. Therefore, to improve the overall performance and operational stability of the reactor, we propose a pressurized liquid-cooled tube bundle reactor to address these issues. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art by providing a pressurized liquid-cooled tube bundle reactor. A flowable channel is formed in the tube bundle reactor through the outer tube shell and the inner tubes of the reaction bundle to facilitate the delivery of a cooling medium. A spiral opening is provided at the medium inlet to prevent excessive flow of the cooling medium. Furthermore, a spiral medium connecting pipe connected to the medium inlet protects the heat transfer tubes and the inner tubes of the reaction bundle from the impact of instantaneous heat release during mixing of a highly exothermic reaction, thereby causing the heat transfer tubes and the inner tubes of the reaction bundle to shake. This helps to improve the fluidity of the cooling medium and increase the time it stays in the heat transfer tubes, thereby improving the overall performance and operational stability of the reactor.

[0005] The present invention also provides a tube bundle reactor with the above-mentioned pressure liquid cooling, comprising: a tube bundle reactor, wherein the tube bundle reactor is mainly composed of a tube body shell, a reaction tube bundle inner tube, and a heat conduction tube, wherein the heat conduction tube is located between the tube body shell and the reaction tube bundle inner tube, and the outer surface of the heat conduction tube is in contact with the outer wall surface of the reaction tube bundle inner tube, and the upper surface of the tube body shell is provided with a medium inlet end, the inner part of the medium inlet end is provided with a spiral mouth, the bottom end of the medium inlet end is fixedly connected to a medium connecting pipe 1, and the end of the medium connecting pipe 1 away from the medium inlet end is connected to the heat conduction tube, and a plurality of heat conduction tubes are provided, the shape of the heat conduction tube is set to be a straight tube, and the shape of the medium connecting pipe 1 is set to be spiral, and the outer surface of the tube body shell is provided with a medium outlet end.

[0006] According to the pressurized liquid-cooled tube bundle reactor of the present invention, one end of several heat-conducting tubes is fixedly connected to a connecting tube, which has a connecting end and a closed end. The connecting end is connected to one end of a medium connecting tube, thereby connecting the heat-conducting tubes and forming a flow channel among the heat-conducting tubes.

[0007] According to the pressurized liquid-cooled tube bundle reactor of the present invention, a plurality of heat-conducting tubes are fixedly connected to a second medium connecting tube at one end away from the connecting tube. The second medium connecting tube is shorter than the first medium connecting tube, thereby extending the time that the flowing cooling medium remains inside the tube body.

[0008] According to the pressurized liquid-cooled tube bundle reactor of the present invention, the end of the second medium connecting pipe away from the heat conducting pipe is fixedly connected to the medium outlet end, so as to allow the elevated temperature cooling medium to flow into the external cooling device for cooling.

[0009] According to the pressurized liquid-cooled tube bundle reactor of the present invention, a circular baffle is fixedly connected to the outer surface of the inner tubes of the reactor bundle where they meet the heat transfer pipes. The baffle supports the inner tubes of the reactor bundle, enhancing their overall stability and seismic resistance.

[0010] According to the pressurized liquid-cooled tube bundle reactor of the present invention, a heat conducting sheet made of aluminum is fixedly connected to the outer surface of the inner tube of the reactor bundle where it connects to the heat conducting pipe. This sheet helps evenly distribute the temperature gradient between the reaction area and the heat conducting area, preventing local overheating or overcooling.

[0011] According to the pressurized liquid-cooled tube bundle reactor of the present invention, fixing plates are fixedly connected to the connection between the outer tube shell and the ends of the inner tubes of the reaction tube bundle. Fluid ports 1 and 2 are provided at both ends of the inner tubes of the reaction tube bundle, respectively, for adding and releasing reaction raw materials.

[0012] According to the pressurized liquid-cooled tube bundle reactor of the present invention, the outer surface of the tube shell is fixedly connected to a support base for fixing and supporting the tube shell.

[0013] Beneficial effects: In the tube bundle reactor, a flowable channel is formed through the tube body shell and the inner tube of the reaction tube bundle, which is convenient for conveying the cooling medium, and a spiral port is provided at the medium inlet end to prevent the cooling medium from flowing too fast. The spiral medium connecting pipe connected to the medium inlet end also protects against the impact of the instantaneous heat release on the heat conduction tube and the inner tube of the reaction tube bundle during the mixing of the strong exothermic reaction, thereby causing the heat conduction tube and the inner tube of the reaction tube bundle to shake. It also helps to improve the fluidity of the cooling medium and increase the residence time in the heat conduction tube, thereby improving the overall performance and operation stability of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is the overall structural diagram of the pressurized liquid-cooled tube bundle reactor of the present invention;

[0016] Figure 2 A top view of a pressurized liquid-cooled tube bundle reactor according to the present invention;

[0017] Figure 3 This is a diagram of the internal structure of the pressurized liquid-cooled tube bundle reactor of the present invention;

[0018] Figure 4 A top view of the internal structure of the pressurized liquid-cooled tube bundle reactor of the present invention;

[0019] Figure 5 This is a tube bundle reactor with pressure liquid cooling Figure 4 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Support seat; 2. Fluid hole 1; 3. Fluid hole 2; 4. Medium inlet end; 41. Spiral mouth; 5. Medium outlet end; 6. Fixed plate; 7. Tube shell; 8. Inner tube of reaction tube bundle; 9. Medium connecting tube 1; 91. Medium connecting tube 2; 10. Heat transfer tube; 11. Baffle; 12. Heat transfer plate; 13. Connecting tube. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0023] Reference Figure 1-5 , the utility model embodiment is a pressure liquid cooling tube bundle reactor, which includes: a tube bundle reactor for cooling the reaction raw materials after the chemical reaction by using a cooling medium, the tube bundle reactor is mainly composed of a tube body shell 7, a reaction tube bundle inner tube 8, and a heat conducting pipe 10, the heat conducting pipe 10 is located between the tube body shell 7 and the reaction tube bundle inner tube 8, forming a circulation channel for conveying the cooling medium, the outer surface of the heat conducting pipe 10 is in contact with the outer wall surface of the reaction tube bundle inner tube 8, for direct cooling, the upper surface of the tube body shell 7 is provided with a medium inlet end 4, which is convenient for the inflow of the cooling medium, and the inner part of the medium inlet end 4 is provided with a spiral mouth 41 to prevent the cooling medium from flowing too fast and causing impact on the medium connecting pipe 9 and the heat conducting pipe 10. Impact, the bottom end of the medium inlet end 4 is fixedly connected with a medium connecting pipe 9, which is used to protect the heat pipe 10 and the inner tube 8 of the reaction tube bundle from the impact of instantaneous heat release during the strong exothermic reaction mixing, thereby causing the inner tube 8 of the reaction tube bundle to shake. The end of the medium connecting pipe 9 away from the medium inlet end 4 is connected to the heat pipe 10 to form a circulatory flow channel. There are several heat pipes 10, and the shape of the heat pipe 10 is set to be a straight pipe, which is used to directly act on the inner tube 8 of the reaction tube bundle. The shape of the medium connecting pipe 9 is set to be spiral, which is used to slow down the flow rate of the cooling medium and slow down the impact and shaking on the heat pipe 10. The outer surface of the tube body shell 7 is provided with a medium outlet end 5, which is used to transmit the heated cooling medium to an external cooling device.

[0024] One end of several heat-conducting pipes 10 is fixedly connected to a connecting pipe 13, and the connecting pipe 13 is provided with a connecting end and a closed end. The connecting end is connected to one end of the medium connecting pipe 1 9, and is used to connect the heat-conducting pipes 10 and form a circulation channel in the several heat-conducting pipes 10, and form a cooling channel for the cooling medium with the medium connecting pipe 1 9 and the medium connecting pipe 2 91. The end of several heat-conducting pipes 10 away from the connecting pipe 13 is fixedly connected to the medium connecting pipe 2 91. The length of the medium connecting pipe 2 91 is shorter than that of the medium connecting pipe 1 9, and is used to prolong the time that the flowing cooling medium stays inside the pipe body. The end of the medium connecting pipe 2 91 away from the heat-conducting pipe 10 is fixedly connected to the medium outlet end 5, and is used to flow the cooling medium with increased temperature into the external cooling device for cooling, ensuring that the cooling medium always maintains a temperature that can be cooled during circulation. A baffle 11 is fixedly connected to the outer surface of the reaction bundle inner tube 8 at the junction with the heat transfer tube 10. The baffle 11 is circular in shape and serves to support the reaction bundle inner tube 8, increasing its overall stability and shock resistance. A heat transfer plate 12 is fixedly connected to the outer surface of the reaction bundle inner tube 8 at the junction with the heat transfer tube 10. The heat transfer plate 12 is made of aluminum and is used to evenly distribute the temperature gradient between the reaction area and the heat transfer area, avoiding local overheating or overcooling, and helping to improve the overall structural stability of the reaction bundle inner tube 8. A fixing plate 6 is fixedly connected to the junction between the outer shell 7 and the ends of the reaction bundle inner tube 8, respectively, to secure the outer shell 7 and the reaction bundle inner tube 8. Fluid port 1 2 and fluid port 2 3 are provided at each end of the reaction bundle inner tube 8 for adding and releasing reaction raw materials. A support base 1 is fixedly connected to the outer surface of the outer shell 7 to secure and support the outer shell 7.

[0025] Working principle: When using the pressure liquid-cooled tube bundle reactor, the reaction raw materials enter the inner tube 8 of the reaction tube bundle through the fluid hole 12, and a chemical reaction occurs under the action of the catalyst inside. A large amount of heat is released during the reaction process. At the same time, the cooling medium is transferred to the medium connecting pipe 19 through the medium inlet end 4 set on the outer surface of one end of the roller shell 7, and then enters the heat conduction pipe 10. Under the action of the connecting pipe 13, the medium connecting pipe 19 and the medium connecting pipe 2 91, the cooling medium circulates in the heat conduction pipe 10 and improves the cooling effect through the heat conducting plate 12. Finally, the cooling medium after flowing takes away the reaction heat and reduces the reaction temperature. After the cooling medium temperature rises, the heated cooling medium is then passed through the electromagnetic valve at the medium outlet end 5 to enter the external cooling device for cooling.

[0026] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A pressurized liquid-cooled tube bundle reactor, characterized in that: include: A tube bundle reactor is provided. The tube bundle reactor mainly consists of a tube body shell (7), a reaction tube bundle inner tube (8), and a heat conducting tube (10). The heat conducting tube (10) is located between the tube body shell (7) and the reaction tube bundle inner tube (8). The outer surface of the heat conducting tube (10) is in contact with the outer wall surface of the reaction tube bundle inner tube (8). The upper surface of the tube body shell (7) is provided with a medium inlet end (4). The inner portion of the medium inlet end (4) is provided with a spiral opening (41). The bottom end of the medium inlet end (4) is fixedly connected with a medium connecting tube (9). The end of the medium connecting tube (9) away from the medium inlet end (4) is connected to the heat conducting tube (10). A plurality of heat conducting tubes (10) are provided. The shape of the heat conducting tube (10) is set as a straight tube. The shape of the medium connecting tube (9) is set as a spiral. The outer surface of the tube body shell (7) is provided with a medium outlet end (5).

2. A pressurized liquid-cooled tube bundle reactor according to claim 1, characterized in that: One end of the plurality of heat-conducting pipes (10) is fixedly connected to a connecting pipe (13), and the connecting pipe (13) is provided with a connecting end and a closed end, and the connecting end is connected to one end of the medium connecting pipe (9).

3. The pressurized liquid-cooled tube bundle reactor according to claim 1, characterized in that: One end of the plurality of heat-conducting pipes (10) away from the connecting pipe (13) is fixedly connected to a second medium connecting pipe (91), and the length of the second medium connecting pipe (91) is shorter than that of the first medium connecting pipe (9).

4. A pressurized liquid-cooled tube bundle reactor according to claim 3, characterized in that: One end of the second medium connecting pipe (91) away from the heat conducting pipe (10) is fixedly connected to the medium outlet end (5).

5. The pressurized liquid-cooled tube bundle reactor according to claim 1, characterized in that: A baffle (11) is fixedly connected to the connection between the outer surface of the inner tube (8) of the reaction tube bundle and the heat conducting tube (10), and the shape of the baffle (11) is set to be circular.

6. The pressurized liquid-cooled tube bundle reactor according to claim 1, characterized in that: A heat conducting plate (12) is fixedly connected to the connection point between the outer surface of the inner tube (8) of the reaction tube bundle and the heat conducting tube (10), and the material of the heat conducting plate (12) is metal aluminum.

7. The pressurized liquid-cooled tube bundle reactor according to claim 1, characterized in that: A fixing plate (6) is fixedly connected to the connection between the outer shell (7) of the tube body and the two ends of the inner tube (8) of the reaction tube bundle. A fluid hole 1 (2) and a fluid hole 2 (3) are respectively provided at the two ends of the inner tube (8) of the reaction tube bundle.

8. The pressurized liquid-cooled tube bundle reactor according to claim 1, characterized in that: The outer surface of the tube body shell (7) is fixedly connected to a support seat (1).

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