A pure water heating device for tetramethylammonium hydroxide production

Abstract

The application discloses a kind of pure water heating equipment for tetramethyl ammonium hydroxide production, it is related to heating equipment field, it includes frame, multiple heating units are sequentially arranged from top to bottom in frame;Heating unit includes water tank, one end of water tank is provided with water tank water inlet, the other end is provided with water tank water outlet, multiple vertically arranged cylinder bodies are provided in water tank, detachable shell is provided in cylinder body, electric heater is provided in shell, the lower end of shell is provided with shell water inlet, shell water inlet is connected with water inlet branch pipe, one end of water inlet branch pipe is connected with water tank water outlet;The upper end of shell is provided with shell water outlet, shell water outlet is connected with water outlet branch pipe.The heating unit of the application adopts stacking type layout, structure is more compact, occupies small plant area, multiple heating units can be used as standby, and the heating components in each heating unit can be individually detached, which can be maintained during equipment operation without affecting production.

Description

Technical Field

[0001] This invention relates to the field of heating equipment, and more particularly to a pure water heating device for the production of tetramethylammonium hydroxide. Background Technology

[0002] The synthesis process of tetramethylammonium hydroxide uses high-temperature pure water, and existing equipment for heating pure water generally uses shell and tube heat exchangers. When a shell and tube heat exchanger experiences heat exchange problems, it needs to be completely disassembled to inspect its internal structure. The heat exchanger cannot be used during maintenance. In order not to affect production, two sets of heat exchangers are often set up and used alternately, resulting in a large space occupation for the heat exchange equipment. At the same time, the shell and tube heat exchanger is large in size, making disassembly very inconvenient. Summary of the Invention

[0003] Based on the above problems, the purpose of this invention is to provide a pure water heating device for the production of tetramethylammonium hydroxide. The invention adopts the following technical solution:

[0004] This invention provides a pure water heating device for the production of tetramethylammonium hydroxide, comprising a frame in which multiple platforms are arranged sequentially from top to bottom, and each platform is provided with a heating unit;

[0005] The heating unit includes a water tank, with a water tank inlet at one end and a water tank outlet at the other end. The water tank contains a plurality of vertically arranged cylinders, the upper and lower ends of which extend to the outside of the water tank, and the outer wall of the cylinders is sealed to the water tank.

[0006] The cylinder is provided with a detachable tube shell, and an electric heater is provided in the tube shell. The lower end of the tube shell is provided with a tube shell water inlet, which is connected to a water inlet branch pipe. One end of the water inlet branch pipe is connected to the water tank outlet. The upper end of the tube shell is provided with a tube shell water outlet, which is connected to a water outlet branch pipe.

[0007] Preferably, the water tank is provided with multiple baffles from the inlet side to the outlet side, and each baffle divides the internal space of the water tank into multiple preheating chambers, and each preheating chamber is provided with multiple cylinders.

[0008] Preferably, the tube shell is U-shaped, the electric heater includes an end plate connected to the upper port of the tube shell, and an electric heating tube assembly is provided on the inner side of the end plate, the electric heating tube assembly being located in the tube shell.

[0009] Preferably, an outer water guide sleeve is provided on the outside of the electric heating tube assembly, the upper end of the outer water guide sleeve is fixedly connected to the end plate, and a gap is left between the outer wall of the outer water guide sleeve and the inner wall of the tube shell;

[0010] An inner water guide sleeve is provided in the outer water guide sleeve. The lower end of the inner water guide sleeve is opposite to the water inlet of the pipe shell, and the lower end of the inner water guide sleeve is fixedly connected to the bottom of the pipe shell.

[0011] The electric heating tube assembly includes an outer heat pipe and an inner heat pipe. The outer heat pipe is located in the interlayer between the outer water jacket and the inner water jacket, and the inner heat pipe is located in the inner water jacket.

[0012] Preferably, a detachable end cap is provided on the outer side of the end plate, and the end cap is provided with a wire hole.

[0013] Preferably, an upper connecting plate is provided on the upper outer wall of the shell, and a lower connecting plate is provided at the upper end of the cylinder, and the upper connecting plate and the lower connecting plate are connected by a bolt assembly.

[0014] Preferably, the outer wall of the cylinder is provided with multiple heat dissipation fins.

[0015] Preferably, a ladder is provided on one side of the frame.

[0016] Preferably, the frame comprises a plurality of stacked unit frames.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0018] The heating unit of the present invention adopts a stacked layout, which makes the structure more compact and occupies less factory space. The multiple heating units can serve as backups for each other, and the heating components in each heating unit can be disassembled individually, so that they can be maintained while the equipment is running without affecting production. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the main structure of the pure water heating equipment used for the production of tetramethylammonium hydroxide in Embodiment 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the heating unit in Embodiment 1 of the present invention;

[0022] Figure 3 This is a schematic diagram of the installation structure of the tube shell and the cylinder in Embodiment 1 of the present invention;

[0023] Figure 4 This is a schematic diagram of the electric heater in Embodiment 1 of the present invention;

[0024] Figure 5 This is a schematic diagram of the disassembled structure of the tube shell and electric heater in Embodiment 2 of the present invention;

[0025] Figure 6 This is a schematic diagram of the assembly structure of the tube shell and electric heater in Embodiment 2 of the present invention.

[0026] Explanation of reference numerals in the attached drawings: 1. Frame; 101. Unit frame; 2. Platform; 3. Heating unit; 301. Water tank; 302. Water tank inlet; 303. Water tank outlet; 304. Cylinder; 305. Tube shell; 306. Electric heater; 306-1. End plate; 306-2. Electric heating tube assembly; 306-2-1. Outer heat pipe; 306-2-2. Inner heat pipe; 306-3. End cap; 306-4. Wiring hole; 307. Tube shell inlet; 308. Inlet branch pipe; 309. Tube shell outlet; 310. Outlet branch pipe; 311. Baffle plate; 312. Preheating chamber; 313. Outer water guide sleeve; 314. Inner water guide sleeve; 315. Upper connecting plate; 316. Lower connecting plate; 317. Heat dissipation fins; 4. Ladder. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Example 1

[0029] like Figure 1 As shown in the figure, this embodiment discloses a pure water heating device for the production of tetramethylammonium hydroxide, including a frame 1. The frame 1 is made of profile. Multiple platforms 2 are arranged in the frame 1 from top to bottom, and each platform 2 is equipped with a heating unit 3.

[0030] like Figure 2 and 3 As shown, the heating unit 3 includes a water tank 301. One end of the water tank 301 is provided with a water tank inlet 302, and the other end is provided with a water tank outlet 303. Multiple vertically arranged cylinders 304 are provided in the water tank 301. The upper and lower ends of the cylinders 304 extend to the outside of the water tank 301, and the outer wall of the cylinders 304 is sealed and welded to the water tank 301. A detachable tube shell 305 is provided in the cylinder 304. An electric heater 306 is provided in the tube shell 305. The lower end of the tube shell 305 is provided with a tube shell inlet 307, which is connected to an inlet branch pipe 308. One end of the inlet branch pipe 308 is connected to the water tank outlet 303. The upper end of the tube shell 305 is provided with a tube shell outlet 309, which is connected to an outlet branch pipe 310.

[0031] Multiple baffles 311 are installed in the water tank 301 from the inlet side to the outlet side. Each baffle 311 divides the internal space of the water tank 301 into multiple preheating chambers 312, and each preheating chamber 312 is provided with multiple cylinders 304. Furthermore, in order to improve the heat transfer from the cylinders 304 to the preheating chambers 312, multiple heat dissipation fins 317 can be provided on the outer wall of the cylinders 304.

[0032] In this embodiment, the shell 305 is U-shaped, and an upper connecting plate 315 is welded to the upper outer wall of the shell 305. A lower connecting plate 316 is welded to the upper end of the cylinder 304. The upper connecting plate 315 and the lower connecting plate 316 are connected by a bolt assembly.

[0033] like Figure 4 As shown, the electric heater 306 includes an end plate 306-1, which is connected to the upper port of the tube housing 305 via a bolt assembly. An electric heating element assembly 306-2 is disposed on the inner side of the end plate 306-1, and the electric heating element assembly 306-2 is located within the tube housing 305. A removable end cap 306-3 is disposed on the outer side of the end plate 306-1, covering the wiring terminals of each electric heating element assembly 306-2. The end cap 306-3 is provided with a wire-through hole 306-4.

[0034] In this embodiment, the frame 1 is composed of multiple stacked unit frames 101. Adjacent unit frames 101 are fixed by bolts. A ladder 4 is provided on one side of the frame 1. Maintenance personnel can enter the platform 2 of each layer through the ladder 4 to repair and replace the tube shell 305 and electric heater 306 in the cylinder 304.

[0035] The working process of this invention is as follows: Pure water enters the water tank 301 through the water inlet 302. The heat from the electric heating tube assembly 306-2 is conducted to the preheating chamber 312 through the cylinder 304 and the tube shell 305 to preheat the pure water in the preheating chamber 312. This preheating process makes full use of the heat dissipated by the tube shell 305. The baffle plate 311 in the water tank 301 increases the water flow path, facilitating sufficient heat exchange.

[0036] The preheated pure water in water tank 301 enters each pipe shell 305 through water tank outlet 303 and inlet branch pipe 308. The electric heater 306 in pipe shell 305 will reheat the pure water, and then it will flow into outlet branch pipe 310 through pipe shell outlet 309. In order to monitor the water temperature, temperature sensors can be added to water tank 301 and each pipe shell 305.

[0037] Each water tank 301 is equipped with multiple cylinders 304. The shell 305 and the electric heater 306 in each shell 304 are detachable. Valves are installed at the inlet 307 and outlet 309 of the shell, so that the heating of a single shell 305 can be cut off individually by the valve. This facilitates equipment maintenance, while ensuring normal operation of the equipment.

[0038] Example 2

[0039] This embodiment improves the internal structure of the shell 305 based on the technology of Embodiment 1, further improving the heat exchange efficiency and making the heating of pure water more uniform.

[0040] Specifically, such as Figure 5 and 6 As shown, an outer water guide sleeve 313 is provided on the outside of the electric heating tube assembly 306-2. The upper end of the outer water guide sleeve 313 is welded and fixed to the end plate 306-1. A gap is left between the outer wall of the outer water guide sleeve 313 and the inner wall of the tube shell 305. An inner water guide sleeve 314 is provided in the outer water guide sleeve 313. The lower end of the inner water guide sleeve 314 is opposite to the water inlet 307 of the tube shell, and the lower end of the inner water guide sleeve 314 is fixedly connected to the bottom of the tube shell 305.

[0041] The electric heating tube assembly 306-2 includes an outer heat pipe 306-2-1 and an inner heat pipe 306-2-2. The outer heat pipe 306-2-1 is located in the interlayer between the outer water jacket 313 and the inner water jacket 314, and the inner heat pipe 306-2-2 is located in the inner water jacket 314.

[0042] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A pure water heating device for the production of tetramethylammonium hydroxide, characterized in that: The system includes a frame (1), in which multiple platforms (2) are arranged sequentially from top to bottom, and each platform (2) is provided with a heating unit (3); The heating unit (3) includes a water tank (301), one end of which is provided with a water tank inlet (302) and the other end with a water tank outlet (303). The water tank (301) contains a plurality of vertically arranged cylinders (304), the upper and lower ends of which extend to the outside of the water tank (301), and the outer wall of the cylinders (304) is sealed to the water tank (301). The cylindrical body (304) is provided with a detachable tube shell (305), and an electric heater (306) is provided in the tube shell (305). The lower end of the tube shell (305) is provided with a tube shell water inlet (307), which is connected to a water inlet branch pipe (308). One end of the water inlet branch pipe (308) is connected to the water tank outlet (303). The upper end of the tube shell (305) is provided with a tube shell water outlet (309), which is connected to a water outlet branch pipe (310).

2. The pure water heating equipment for the production of tetramethylammonium hydroxide according to claim 1, characterized in that: The water tank (301) is provided with multiple baffles (311) from the water inlet side to the water outlet side. Each baffle (311) divides the internal space of the water tank (301) into multiple preheating chambers (312). Each preheating chamber (312) is provided with multiple cylinders (304).

3. The pure water heating equipment for the production of tetramethylammonium hydroxide according to claim 1, characterized in that: The shell (305) is U-shaped. The electric heater (306) includes an end plate (306-1), which is connected to the upper port of the shell (305). An electric heating tube assembly (306-2) is provided on the inner side of the end plate (306-1), and the electric heating tube assembly (306-2) is located in the shell (305).

4. The pure water heating equipment for the production of tetramethylammonium hydroxide according to claim 3, characterized in that: An outer water guide sleeve (313) is provided on the outside of the electric heating tube assembly (306-2). The upper end of the outer water guide sleeve (313) is fixedly connected to the end plate (306-1). A gap is left between the outer wall of the outer water guide sleeve (313) and the inner wall of the tube shell (305). An inner water guide sleeve (314) is provided in the outer water guide sleeve (313). The lower end of the inner water guide sleeve (314) is opposite to the water inlet (307) of the pipe shell, and the lower end of the inner water guide sleeve (314) is fixedly connected to the bottom of the pipe shell (305). The electric heating tube assembly (306-2) includes an outer heat pipe (306-2-1) and an inner heat pipe (306-2-2). The outer heat pipe (306-2-1) is located in the interlayer between the outer water jacket (313) and the inner water jacket (314), and the inner heat pipe (306-2-2) is located in the inner water jacket (314).

5. The pure water heating equipment for the production of tetramethylammonium hydroxide according to claim 3, characterized in that: A detachable end cap (306-3) is provided on the outer side of the end plate (306-1), and the end cap (306-3) is provided with a wire hole (306-4).

6. The pure water heating equipment for the production of tetramethylammonium hydroxide according to claim 1, characterized in that: An upper connecting plate (315) is provided on the upper outer wall of the shell (305), and a lower connecting plate (316) is provided at the upper port of the cylinder (304). The upper connecting plate (315) and the lower connecting plate (316) are connected by a bolt assembly.

7. The pure water heating equipment for the production of tetramethylammonium hydroxide according to claim 1, characterized in that: The outer wall of the cylinder (304) is provided with multiple heat dissipation fins (317).

8. The pure water heating equipment for the production of tetramethylammonium hydroxide according to claim 1, characterized in that: A ladder (4) is provided on one side of the frame (1).

9. The pure water heating equipment for the production of tetramethylammonium hydroxide according to claim 1, characterized in that: The frame (1) includes multiple stacked unit frames (101).

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