A neutralization reactor for the preparation of triisobutyl phosphate

Abstract

This invention belongs to the field of triisobutyl phosphate preparation technology, specifically relating to a neutralization reaction vessel for triisobutyl phosphate preparation, including a support frame. When the drive motor rotates the stirring shaft, the solution is scraped onto the distribution blades through the guide vanes, resulting in a larger distribution of water droplets or mist on the lower side of the distribution blades, increasing the contact area between the alkaline solution and hydrogen chloride. Excess solution is transferred to the space between the two distribution blades through the slots on the slow-flow blades, preventing solution accumulation and increased stirring resistance, thus making the neutralization of hydrogen chloride more thorough and efficient. By controlling the handle to seal the injection pipe, the alkaline solution can be injected into the storage vessel. After the appropriate amount of alkaline solution has been injected, the sealing plug is controlled to seal the storage vessel, and at the same time, the ball valve block is opened by controlling the handle to discharge the alkaline solution into the container for the neutralization reaction. During this process, hydrogen chloride remains in a sealed space, thus preventing the leakage of hydrogen chloride gas.

Description

Technical Field

[0001] This invention belongs to the field of triisobutyl phosphate preparation technology, specifically relating to a neutralization reaction vessel for the preparation of triisobutyl phosphate. Background Technology

[0002] Triisobutyl phosphate can be used as a raw material for textile auxiliaries, penetrants, and dye auxiliaries. In its production process, it needs to be neutralized and washed with water. Under stirring, an alkaline substance is added to the de-alcoholized material to neutralize and remove the residual hydrogen chloride in the material; then hot water at 30 to 100°C is added for washing, and after standing, the water layer is separated to obtain the initial product of triisobutyl phosphate. It has a wide range of uses and can be used as an industrial defoamer.

[0003] Chinese patent CN219441687U discloses a neutralization reactor for the preparation of triisobutyl phosphate, comprising a cylindrical reactor body, multiple feed hoppers inserted at the upper end of the reactor body, a discharge pipe inserted into the side wall of the reactor body, a stirring motor fixed at the upper end of the reactor body, the main shaft of the stirring motor penetrating into the interior of the reactor body and fixed with a drive rod, and an electric push rod fixed at the inner bottom of the reactor body, with a sealing slide plate fixed at the rod head. The sealing slide plate, which moves under the action of the electric push rod, enables the overall movement of the liquid after water washing and stratification, facilitating the sequential removal of water and triisobutyl phosphate product via the discharge pipe, and offering greater adaptability. Simultaneously, a vertical scraper can remove adhering substances from the inner wall of the reactor body, ensuring full utilization of the raw materials and facilitating direct subsequent use.

[0004] The aforementioned reactor has the function of scraping off the deposits on the inner wall. However, in actual applications, the existing reactor is not completely filled with solution. Therefore, when adding alkali to remove hydrogen chloride, a large amount of hydrogen chloride will accumulate above the solution. Conventional stirring components cannot raise the solution to contact the hydrogen chloride, resulting in low neutralization efficiency and the risk of incomplete removal of hydrogen chloride or leakage during the addition of alkali, which could cause environmental pollution. Utility Model Content

[0005] The purpose of this invention is to provide a neutralization reactor for the preparation of triisobutyl phosphate, so as to solve the problems of low neutralization efficiency and easy leakage of hydrogen chloride in existing reactors.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The neutralization reactor for the preparation of triisobutyl phosphate includes a support frame, a reaction vessel fixedly mounted on the upper side of the support frame, a sealing cover fixedly mounted on the upper side of the reaction vessel, and a stirring mechanism disposed between the reaction vessel and the sealing cover. The stirring mechanism includes a drive motor, which is fixedly mounted in the middle of the support frame, and a stirring shaft is fixedly mounted on the output end of the drive motor. Two guide vanes are fixedly mounted on the lower side of the stirring shaft, and flow-diverting vanes are fixedly mounted on each of the two guide vanes. Slow-flow vanes are fixedly mounted between each of the two flow-diverting vanes and the stirring shaft.

[0008] Preferably, the guide vanes, diverter vanes, and flow modulator vanes are respectively attached to the inner walls of the reaction vessel and the sealing cap, and the reaction vessel and the sealing cap are fixedly connected by a number of bolt groups.

[0009] Preferably, the guide vanes and the diverter vanes are both fixedly installed at an angle on both sides of the stirring shaft, and the angle between the guide vanes and the horizontal plane is smaller than the angle between the diverter vanes and the horizontal plane.

[0010] Preferably, both the flow divider blade and the flow slowing blade are provided with a plurality of slots, and the density of the plurality of slots on the flow divider blade is greater than the density of the slots on the flow slowing blade.

[0011] Preferably, the sealing cap is provided with a leak-proof mechanism, which includes an injection tube that is fixedly installed through the sealing cap. A ball valve block is rotatably installed inside the injection tube. A handle is fixedly installed on one side of the ball valve block. A reservoir is fixedly installed on the upper part of the injection tube, and a sealing plug is fixedly installed on the upper part of the reservoir.

[0012] Preferably, one end of the injection tube is flush with the inner wall of the sealing cap, and the injection tube is vertically fixed on the sealing cap.

[0013] Preferably, the bottom of the liquid storage vessel is arc-shaped, and the sealing plug is fixedly installed on the liquid storage vessel.

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

[0015] 1) In the neutralization reactor for the preparation of triisobutyl phosphate of this utility model, when the drive motor is controlled to rotate the stirring shaft, the solution will be scraped onto the diversion blade through the guide blade. At this time, the solution falls from the slots on the diversion blade, resulting in a large number of water droplets or water mists distributed on the lower side of the diversion blade, which increases the contact area between the alkaline solution and hydrogen chloride. The excess solution will be transferred to the space between the two diversion blades through the slots on the slow-flow blade, avoiding the accumulation of solution and the resulting increase in stirring resistance, so that the neutralization of hydrogen chloride is more thorough and efficient.

[0016] 2) By controlling the handle to seal the injection pipe, the sealing plug can be removed and an alkaline solution can be injected into the storage tank. After an appropriate amount of alkaline solution has been injected, the sealing plug is controlled to seal the storage tank. At the same time, the handle is controlled to open the ball valve block, so that the alkaline solution can be discharged into the container for neutralization reaction. During this process, hydrogen chloride is always in a sealed space, thus avoiding leakage of hydrogen chloride gas. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the neutralization reactor for the preparation of triisobutyl phosphate in an embodiment of this utility model;

[0018] Figure 2 This is a cross-sectional view of the reaction vessel in an embodiment of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the stirring mechanism in an embodiment of the present utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the blade in an embodiment of the present utility model;

[0021] Figure 5 This is a cross-sectional view of the liquid storage vessel in an embodiment of the present invention.

[0022] In the diagram: 1. Support frame; 2. Reaction tank; 3. Sealing cap; 4. Stirring mechanism; 401. Drive motor; 402. Stirring shaft; 403. Guide vane; 404. Flow divider vane; 405. Flow stabilizing vane; 5. Leak prevention mechanism; 501. Liquid injection pipe; 502. Ball valve block; 503. Rotary handle; 504. Liquid storage tank; 505. Sealing plug. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Example 1

[0025] Combination Figures 1-4 The neutralization reactor for the preparation of triisobutyl phosphate includes a support frame 1, a reaction tank 2 fixedly mounted on the upper side of the support frame 1, a sealing cover 3 fixedly mounted on the upper side of the reaction tank 2, and a stirring mechanism 4 provided between the reaction tank 2 and the sealing cover 3. The stirring mechanism 4 includes a drive motor 401, which is fixedly mounted in the middle of the support frame 1, and a stirring shaft 402 is fixedly mounted on the output end of the drive motor 401. Two guide vanes 403 are fixedly mounted on the lower side of the stirring shaft 402, and a flow divider vane 404 is fixedly mounted on each of the two guide vanes 403. A flow retarder vane 405 is fixedly mounted between each of the two flow divider vanes 404 and the stirring shaft 402.

[0026] The guide vane 403, the diverting vane 404, and the slowing vane 405 are respectively attached to the inner walls of the reaction tank 2 and the sealing cover 3, so that the materials in the reaction tank 2 and the sealing cover 3 are fully stirred. The reaction tank 2 and the sealing cover 3 are fixedly connected by several bolt groups, which facilitates the installation of the vanes. The guide vane 403 and the diverting vane 404 are both fixedly installed at an angle on both sides of the stirring shaft 402, and the angle between the guide vane 403 and the horizontal plane is smaller than the angle between the diverting vane 404 and the horizontal plane. When the drive motor 401 rotates the stirring shaft 402, the solution is scraped onto the diversion blade 404 by the guide vane 403. Both the diversion blade 404 and the slow-flow blade 405 have several slots, and the density of the slots on the diversion blade 404 is greater than the density of the slots on the slow-flow blade 405. When the solution passes over the diversion blade 404, it will fall further from the slots, resulting in more water droplets or mist distributed on the lower side of the diversion blade 404, increasing the contact area between the alkaline solution and hydrogen chloride. Excess solution will be transferred from the slots on the slow-flow blade 405 to between the two diversion blades 404, avoiding solution accumulation and increased stirring resistance.

[0027] Example 2

[0028] See Figure 5 The sealing cap 3 is provided with a leak-proof mechanism 5, which includes an injection pipe 501. The injection pipe 501 is fixedly installed on the sealing cap 3 through the pipe. A ball valve block 502 is rotatably installed inside the injection pipe 501. A handle 503 is fixedly installed on one side of the ball valve block 502. A liquid storage tank 504 is fixedly installed on the upper part of the injection pipe 501. A sealing plug 505 is fixedly installed on the upper part of the liquid storage tank 504.

[0029] One end of the injection tube 501 is flush with the inner wall of the sealing cap 3, and the injection tube 501 is vertically fixed on the sealing cap 3. The bottom of the reservoir 504 is arc-shaped, and the sealing plug 505 is snap-fit ​​fixed on the reservoir 504. In use, by controlling the handle 503 to seal the injection tube 501, the sealing plug 505 can be removed and an alkaline solution can be injected into the reservoir 504. After an appropriate amount of alkaline solution has been injected, the sealing plug 505 is controlled to seal the reservoir 504. At the same time, the handle 503 is controlled to open the ball valve block 502, so that the alkaline solution can be discharged from the container for neutralization reaction. During this process, hydrogen chloride is always in a sealed space, thus avoiding leakage of hydrogen chloride gas.

[0030] In actual operation, when the drive motor 401 rotates the stirring shaft 402, the solution is scraped onto the diversion blade 404 through the guide blade 403. Both the diversion blade 404 and the slow-flow blade 405 have several slots, and the density of the slots on the diversion blade 404 is greater than the density of the slots on the slow-flow blade 405. When the solution passes over the diversion blade 404, it will fall further from the slots, resulting in more water droplets or mist distributed on the lower side of the diversion blade 404, increasing the contact area between the alkaline solution and hydrogen chloride. Excess solution will be transferred from the slots on the slow-flow blade 405 to between the two diversion blades 404, avoiding solution accumulation and increased stirring resistance.

[0031] By controlling the handle 503 to seal the injection pipe 501, the sealing plug 505 can be removed and an alkaline solution can be injected into the reservoir 504. After an appropriate amount of alkaline solution has been injected, the sealing plug 505 is controlled to seal the reservoir 504. At the same time, the handle 503 is controlled to open the ball valve block 502, so that the alkaline solution can be discharged from the container for neutralization reaction. During this process, hydrogen chloride is always in a sealed space, thus avoiding leakage of hydrogen chloride.

Claims

1. A neutralization reaction kettle for preparing triisobutyl phosphate, comprising a support frame (1), a reaction barrel (2) fixedly installed on the upper side of the support frame (1), and a sealing cover (3) fixedly installed on the upper side of the reaction barrel (2), characterized in that: A stirring mechanism (4) is provided between the reaction vessel (2) and the sealing cover (3); The stirring mechanism (4) includes a drive motor (401), which is fixedly installed in the middle of the support frame (1). A stirring shaft (402) is fixedly installed on the output end of the drive motor (401). Two guide vanes (403) are fixedly installed on the lower side of the stirring shaft (402). A flow divider vane (404) is fixedly installed on each of the two guide vanes (403). A flow retarder vane (405) is fixedly installed between each of the two flow divider vanes (404) and the stirring shaft (402).

2. The neutralization reactor for preparing triisobutyl phosphate according to claim 1, characterized in that: The guide vane (403), the diverter vane (404), and the slow-flow vane (405) are respectively attached to the inner walls of the reaction tank (2) and the sealing cover (3), and the reaction tank (2) and the sealing cover (3) are fixedly connected by several bolt groups.

3. The neutralization reactor for preparing triisobutyl phosphate according to claim 2, characterized in that: The guide vane (403) and the diverter vane (404) are both fixedly installed at an inclination on both sides of the stirring shaft (402), and the angle between the guide vane (403) and the horizontal plane is smaller than the angle between the diverter vane (404) and the horizontal plane.

4. The neutralization reactor for the preparation of triisobutyl phosphate according to claim 2 or 3, characterized in that: Both the flow divider blade (404) and the flow retarder blade (405) are provided with a number of slots, and the density of the slots on the flow divider blade (404) is greater than the density of the slots on the flow retarder blade (405).

5. The neutralization reactor for preparing triisobutyl phosphate according to claim 2, characterized in that: The sealing cap (3) is provided with a leak-proof mechanism (5). The leak-proof mechanism (5) includes an injection tube (501). The injection tube (501) is fixedly installed through the sealing cap (3). A ball valve block (502) is rotatably installed inside the injection tube (501). A rotating handle (503) is fixedly installed on one side of the ball valve block (502). A liquid storage tank (504) is fixedly installed on the upper part of the injection tube (501). A sealing plug (505) is fixedly installed on the upper part of the liquid storage tank (504).

6. The triisobutyl phosphate production neutralization reactor according to claim 5, characterized by: One end of the injection tube (501) is flush with the inner wall of the sealing cap (3), and the injection tube (501) is vertically fixed on the sealing cap (3).

7. The triisobutyl phosphate production neutralization reactor according to claim 5 or 6, characterized by: The bottom of the liquid reservoir (504) is arc-shaped, and the sealing plug (505) is fixedly installed on the liquid reservoir (504) by snap-fit.

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