Cyanopyridine raw material vaporizer

Abstract

The utility model relates to the technical field of chemical equipment, in particular to a cyanopyridine raw material vaporizer which comprises a vaporizing box, a water removal box and a heating box are installed at the top end and the bottom end of the vaporizing box respectively, an observation window is arranged at one end of the vaporizing box, a communicating hole is formed in the inner bottom wall of the vaporizing box, and a communicating pipe is arranged in the portion, close to the communicating hole, of the vaporizing box. Steam generated in the heating box conveniently enters the vaporization box through a communicating hole in the bottom wall in the vaporization box, then ammonia water in a liquid storage pipe and a communicating pipe is heated, separated ammonia gas is doubly filtered through two water absorption plates sequentially arranged in the water removal box, the water removal effect is good, and the practicability is high. Through the mounting groove and the limiting groove formed in one end of the water removal box, the mounting frame can be inserted into the water removal box, then the mounting frame can be conveniently disassembled and assembled through the mounting bolts, the water absorption plate can be replaced without disassembling the water removal box after long-time use, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a cyanopyridine raw material vaporizer. Background Technology

[0002] Cyanopyridine is a white crystalline solid commonly used in the pharmaceutical and food industries. The main production method of cyanopyridine is gas-phase chlorination reaction. Therefore, ammonia gas needs to be injected into the reaction vessel during the production process. Ammonia gas is usually separated from the ammonia water by heating concentrated ammonia water for use.

[0003] In the prior art, Chinese Patent Publication No. CN211864944U provides a cyanopyridine raw material vaporizer, including a tower-shaped vaporization chamber with a steam inlet installed at the bottom and a steam injection device installed at the bottom of the vaporization chamber; an ammonia generator is installed in the middle of the vaporization chamber; the ammonia generator is a number of test tube-shaped containers arranged in a vertical array, and the bottom of each container is connected; the connection between the ammonia generator and the inner wall of the vaporization chamber is a sealed structure, so that steam cannot enter the space above the ammonia generator; an ammonia collection device is installed at the top of the vaporization chamber, and a drain outlet is installed at the bottom of the vaporization chamber.

[0004] However, the aforementioned patent only uses a single filter plate to filter the moisture mixed in ammonia, so the water removal effect is generally poor. After long-term use, the ammonia collection device needs to be disassembled and the filter plate replaced, which is quite cumbersome. Utility Model Content

[0005] The purpose of this invention is to provide a cyanopyridine feed gasifier to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cyanopyridine raw material vaporizer, comprising: a vaporization box, a dewatering box and a heating box respectively installed at the top and bottom of the vaporization box, an observation window provided at one end of the vaporization box, a connecting hole provided on the inner bottom wall of the vaporization box, a connecting pipe provided inside the vaporization box near the connecting hole, a plurality of liquid storage pipes evenly installed at the top of the connecting pipe, and the top of each liquid storage pipe penetrating the vaporization box and communicating with the interior of the dewatering box;

[0007] The top of the water removal tank is equipped with an air outlet pipe. The inside of the water removal tank is provided with two mounting frames. Each mounting frame is equipped with a water suction plate. Each mounting frame is equipped with a pull plate at one end. Each pull plate is threaded with mounting bolts. Each mounting frame is fitted with a sealing ring on the outside of the end of the two mounting frames near the pull plate. Each mounting frame is equipped with a limit block on the side wall of the other end. Each water removal tank has a limit groove on the inner wall near the two limit blocks.

[0008] Preferably, the heating box is fixedly installed at the bottom of the vaporization box, a heating plate is installed inside the heating box, and a water supply pipe is fixedly installed at one bottom end of the heating box.

[0009] Preferably, a plurality of the connecting holes are evenly arranged, and each connecting hole is a funnel shape that is wider at the top and narrower at the bottom.

[0010] Preferably, the connecting pipe is a continuous S-shape, and a drain pipe is fixedly installed at one end of the vaporization box near the connecting pipe. One end of the drain pipe passes through the vaporization box and is connected to the connecting pipe.

[0011] Preferably, the bottom end of each liquid storage tube is connected to the connecting pipe, and the top end of each liquid storage tube is fixedly installed on the vaporization box. An inlet pipe is fixedly installed on the top end of the vaporization box away from the drain pipe, and one end of the inlet pipe passes through the vaporization box and is connected to the interior of an adjacent liquid storage tube.

[0012] Preferably, the surface of the water removal tank near the two pull plates has two corresponding mounting grooves. One end of the two pull plates is inserted into the adjacent mounting groove and fixed to the water removal tank by mounting bolts. One end of the two pull plates is tightly connected to the inner wall of the adjacent mounting groove by a sealing ring.

[0013] Preferably, the interior of each of the two mounting slots is connected to the interior of two adjacent limiting slots. Each limiting block is T-shaped and is fixedly mounted on the adjacent mounting frame. The outer wall of each limiting block is slidably connected to the inner wall of the adjacent limiting slot. The end of each limiting block near the pull plate is tightly fitted with the adjacent sealing ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes a connecting hole on the bottom wall of the vaporization chamber to facilitate the entry of steam generated in the heating chamber into the vaporization chamber, thereby heating the ammonia water inside the liquid storage pipe and the connecting pipe. Two water suction plates arranged sequentially inside the dewatering tank facilitate double filtration of the separated ammonia gas, resulting in good dewatering effect. An installation frame can be inserted into the dewatering tank through an installation groove and a limiting groove at one end of the dewatering tank, making it easy to assemble and disassemble the installation frame using installation bolts. After long-term use, the water suction plates can be replaced without disassembling the dewatering tank, making operation relatively simple. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a three-dimensional sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a three-dimensional connection diagram of a partial structure of this utility model;

[0019] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 5 This is a three-dimensional schematic diagram of the water-absorbing plate structure of this utility model.

[0021] In the diagram: 1. Vaporization box; 2. Heating box; 3. Water removal box; 4. Liquid inlet pipe; 5. Liquid outlet pipe; 6. Connecting pipe; 7. Liquid storage pipe; 8. Connecting hole; 9. Water supply pipe; 10. Heating plate; 11. Mounting frame; 12. Water suction plate; 13. Limiting block; 14. Mounting groove; 15. Sealing ring; 16. Pull plate; 17. Limiting groove; 18. Gas outlet pipe; 19. Mounting bolt; 20. Observation window. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1 to 5This utility model provides a technical solution: a cyanopyridine raw material vaporizer, comprising: a vaporization box 1, with a dewatering tank 3 and a heating box 2 installed at the top and bottom of the vaporization box 1 respectively; an observation window 20 is provided at one end of the vaporization box 1; a connecting hole 8 is provided on the inner bottom wall of the vaporization box 1; a connecting pipe 6 is provided inside the vaporization box 1 near the connecting hole 8; a plurality of liquid storage pipes 7 are evenly installed at the top of the connecting pipe 6; the top of each liquid storage pipe 7 penetrates the vaporization box 1 and is connected to the interior of the dewatering tank 3, facilitating observation of the working condition inside the vaporization box 1 through the observation window 20; the heating box 2 is fixedly installed at the bottom of the vaporization box 1; a heating plate 10 is installed inside the heating box 2; a water supply pipe 9 is fixedly installed at the bottom of one end of the heating box 2, facilitating the opening of the valve of the water supply pipe 9 to supply water into the heating box 2, and then heating the water in the heating box 2 through the heating plate 10 to generate high-temperature steam. Several connecting holes 8 are evenly distributed, each of which is funnel-shaped, wider at the top and narrower at the bottom. This facilitates the diffusion of high-temperature water vapor into the vaporization chamber 1 to heat and separate the ammonia water in the storage pipe 7 and connecting pipe 6, and also allows the liquefied water in the dewatering tank 3 to fall into the storage pipe 7. The connecting pipe 6 is a continuous S-shape. A drain pipe 5 is fixedly installed at one end of the vaporization chamber 1 near the connecting pipe 6. One end of the drain pipe 5 passes through the vaporization chamber 1 and is connected to the connecting pipe 6, allowing the valve on the drain pipe 5 to be opened to discharge the water separated from the ammonia water. The bottom end of each liquid storage tube 7 is connected to the connecting pipe 6, and the top end of each liquid storage tube 7 is fixedly installed on the vaporization box 1. The top end of the vaporization box 1 away from the drain pipe 5 is fixedly installed with an inlet pipe 4. One end of the inlet pipe 4 passes through the vaporization box 1 and is connected to the interior of an adjacent liquid storage tube 7, so as to facilitate opening the valve of the inlet pipe 4 to deliver ammonia water into the liquid storage tube 7 and the connecting pipe 6. The top opening of each liquid storage tube 7 is flush with the top of the vaporization box 1.

[0024] A vent pipe 18 is installed at the top of the dewatering tank 3. Two mounting frames 11 are installed inside the dewatering tank 3. Each mounting frame 11 has a water-absorbing plate 12 inside. A pull plate 16 is installed at one end of each mounting frame 11, and mounting bolts 19 are threaded onto the surface of each pull plate 16. A sealing ring 15 is fitted onto the outer side of each mounting frame 11 near the pull plate 16. A limiting block 13 is installed on the side wall of each mounting frame 11 at the other end. A limiting groove 17 is formed on the inner wall of the dewatering tank 3 near the two limiting blocks 13. The dewatering tank 3 and the heating box 2 are fixedly connected to the vaporization box 1 by welding or other methods. Two mounting grooves 14 are correspondingly formed on the surface of the dewatering tank 3 near the two pull plates 16. One end of each pull plate 16 is inserted into the adjacent mounting groove 14 and fixed to the dewatering tank 3 by mounting bolts 19. The end of each pull plate 16 is tightly connected to the inner wall of the adjacent mounting groove 14 by the sealing ring 15. The interior of each of the two mounting slots 14 is connected to the interior of the two adjacent limiting slots 17. Each limiting block 13 is T-shaped and is fixedly installed on the adjacent mounting frame 11. The outer wall of each limiting block 13 is slidably connected to the inner wall of the adjacent limiting slot 17. The end of each limiting block 13 near the pull plate 16 is tightly fitted with the adjacent sealing ring 15. One end of each mounting slot 14 is connected to the interior of the water removal tank 3.

[0025] During operation, water is supplied to the heating tank 2 via the water supply pipe 9, and ammonia water is supplied to the storage pipe 7 and connecting pipe 6 via the liquid inlet pipe 4. The heating plate 10 is activated by controlling the heating plate 10 to heat the water. After the water in the heating tank 2 is heated, high-temperature steam is generated. The steam generated in the heating tank 2 enters the vaporization tank through the connecting hole 8 on the bottom wall of the vaporization tank 1, thereby heating the ammonia water in the storage pipe 7 and connecting pipe 6. The ammonia gas in the ammonia water is separated and enters the dehydration tank 3 through the top of the storage pipe 7. The two water absorption plates 12 arranged in sequence in the dehydration tank 3 facilitate double filtration of the separated ammonia gas, removing the water impurities. Then, it is transported to the reactor for producing cyanopyridine through the gas storage tank 18. The dehydration effect is good. The dehydration tank 3 is opened at one end. The mounting groove 14 and the limiting groove 17 are designed so that the mounting frame 11 can be inserted into the water removal tank 3. The limiting groove 17 limits the limiting block 13, thus limiting the mounting frame 11. When the limiting block 13 is fully inserted into the corresponding limiting groove 17, one end of each of the two pull plates 16 is inserted into the mounting groove 14 and abuts against the inner wall of the mounting groove 14. The two pull plates 16 are tightly connected to the inner wall of the adjacent mounting groove 14 by the sealing ring 15, which can improve the connection and sealing of the mounting frame 11, the pull plates 16 and the mounting groove 14. Then, the pull plates 16 are detachably installed on the water removal tank 3 by the mounting bolts 19, which facilitates the disassembly and replacement of the mounting frame 11 and the water suction plate 12. After long-term use, the water suction plate 12 can be replaced without removing the water removal tank 3, which is relatively simple to operate.

[0026] 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 cyanopyridine feedstock vaporizer, comprising: A vaporization box (1) is characterized in that: a dewatering box (3) and a heating box (2) are respectively installed at the top and bottom of the vaporization box (1), an observation window (20) is provided at one end of the vaporization box (1), a connecting hole (8) is provided on the inner bottom wall of the vaporization box (1), a connecting pipe (6) is provided inside the vaporization box (1) near the connecting hole (8), and a number of liquid storage pipes (7) are evenly installed at the top of the connecting pipe (6), and the top of each liquid storage pipe (7) penetrates the vaporization box (1) and is connected to the interior of the dewatering box (3); The top of the water removal tank (3) is equipped with an air outlet pipe (18). The inside of the water removal tank (3) is provided with two mounting frames (11). The inside of each mounting frame (11) is provided with a water suction plate (12). Each of the two mounting frames (11) is equipped with a pull plate (16) at one end. The surface of each pull plate (16) is threaded with mounting bolts (19). Each of the two mounting frames (11) is fitted with a sealing ring (15) at the outside of the end of the pull plate (16). Each of the two mounting frames (11) is equipped with a limit block (13) on the side wall of the other end. Each of the two water removal tanks (3) is provided with a limit groove (17) on the inner wall of the water removal tank (3) near the two limit blocks (13).

2. The cyanopyridine feed gasifier according to claim 1, characterized in that: The heating box (2) is fixedly installed at the bottom of the vaporization box (1). A heating plate (10) is installed inside the heating box (2). A water pipe (9) is fixedly installed at the bottom of one end of the heating box (2).

3. The cyanopyridine feed gasifier according to claim 1, characterized in that: The connecting holes (8) are evenly arranged in several places, and each connecting hole (8) is a trumpet shape that is wider at the top and narrower at the bottom.

4. The cyanopyridine feed gasifier according to claim 1, characterized in that: The connecting pipe (6) is a continuous S-shape. A drain pipe (5) is fixedly installed at one end of the vaporization box (1) near the connecting pipe (6). One end of the drain pipe (5) passes through the vaporization box (1) and is connected to the connecting pipe (6).

5. A cyanopyridine feedstock vaporizer according to claim 1, characterized in that: The bottom end of each liquid storage tube (7) is connected to the connecting pipe (6), and the top end of each liquid storage tube (7) is fixedly installed on the vaporization box (1). The top end of the vaporization box (1) away from the drain pipe (5) is fixedly installed with an inlet pipe (4). One end of the inlet pipe (4) passes through the vaporization box (1) and is connected to the interior of an adjacent liquid storage tube (7).

6. A cyanopyridine feedstock vaporizer according to claim 1, characterized in that: The surface of the water removal tank (3) near the two pull plates (16) has two mounting grooves (14). One end of the two pull plates (16) is inserted into the adjacent mounting groove (14) and fixed on the water removal tank (3) by mounting bolts (19). One end of the two pull plates (16) is tightly connected to the inner wall of the adjacent mounting groove (14) by a sealing ring (15).

7. A cyanopyridine feed gasifier according to claim 6, characterized in that: The interior of each of the two mounting slots (14) is connected to the interior of the two adjacent limiting slots (17). Each limiting block (13) is T-shaped and is fixedly installed on the adjacent mounting frame (11). The outer wall of each limiting block (13) is slidably connected to the inner wall of the adjacent limiting slot (17). The end of each limiting block (13) near the pull plate (16) is tightly fitted with the adjacent sealing ring (15).

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