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CN-224221345-U - Reaction system for preparing light stabilizer

CN224221345UCN 224221345 UCN224221345 UCN 224221345UCN-224221345-U

Abstract

The utility model discloses a reaction system for preparing a light stabilizer, which comprises a reaction kettle, a temperature control system, a feeding structure, a stirring structure, a conveying pipe, a filtering device, a material conveying system and a purifying system, wherein an upper cover is arranged on an opening structure at the top of the reaction kettle, the stirring structure is arranged in the reaction kettle, the conveying pipe is arranged at the bottom of the reaction kettle, the material conveying system is arranged between the conveying pipe and the filtering device, the filtering device is arranged at one end of the conveying pipe far away from the reaction kettle, and the purifying system is arranged at one side of the filtering device far away from the conveying pipe.

Inventors

  • HAN YAN
  • HU XINLI
  • YANG GUANG
  • YANG ZIWEI
  • ZHAO FEI
  • YU YONGTAO
  • LIANG XIAOLONG

Assignees

  • 宿迁联盛助剂有限公司

Dates

Publication Date
20260512
Application Date
20250520

Claims (8)

  1. 1. A reaction system for preparing a light stabilizer, comprising: The reaction kettle (1), the structure of opening at the top of the reaction kettle (1), is equipped with the upper cover (2) on the reaction kettle (1), offer the cavity in the sidewall of the said reaction kettle (1); The temperature control system (3) is arranged in the cavity of the side wall of the reaction kettle (1); The feeding structure (4) is arranged in the upper cover (2); The stirring structure (5) is fixed on the upper cover (2) and is suspended in the reaction kettle (1); The conveying pipe (6) is arranged at the bottom of the reaction kettle (1) and is communicated with the reaction kettle (1), and a first control valve (7) is arranged at the joint of the conveying pipe (6) and the reaction kettle (1); The filtering device (8) is arranged at one end of the conveying pipe (6) far away from the reaction kettle (1); The material conveying system (9), the material conveying system (9) is arranged between the reaction kettle (1) and the filtering device (8), and the material conveying system (9) is connected with the conveying pipe (6); The purification system (10) is arranged on one side, far away from the conveying pipe (6), of the filtering device (8), and the purification system (10) is communicated with the filtering device (8); And the storage tank (11) is arranged on one side of the purification system (10) away from the conveying pipe (6).
  2. 2. A reaction system for the preparation of light stabilizers according to claim 1, characterized in that the temperature control system (3) comprises a temperature regulating device (301), the temperature regulating device (301) being arranged in the cavity, the temperature regulating device (301) being connected to a control board (302).
  3. 3. The reaction system for preparing the light stabilizer according to claim 1, wherein the feeding structure (4) comprises a feeding pipe (401), a pumping pump (402) and a filtering box (403), one end of the feeding pipe (401) is inserted into the upper cover (2), the other end of the feeding pipe is provided with the filtering box (403), and the pumping pump (402) is arranged between the upper cover (2) and the filtering box (403) and is connected through the feeding pipe (401).
  4. 4. The reaction system for preparing the light stabilizer according to claim 1, wherein the stirring structure (5) comprises a rotating shaft (501), a helical blade (502), a scraping plate (503) and a motor (504), the motor (504) is arranged above the upper cover (2), the top end of the rotating shaft (501) is connected with the motor (504), the rotating shaft (501) penetrates through the upper cover (2) and is arranged in the reaction kettle (1), and the helical blade (502) is arranged on the rotating shaft.
  5. 5. The reaction system for preparing the light stabilizer according to claim 4, wherein a U-shaped scraping plate (503) is arranged at the bottom of the rotating shaft (501), and the scraping plate (503) is in contact with the inner wall of the reaction kettle (1).
  6. 6. The reaction system for preparing the light stabilizer according to claim 1, wherein the material conveying system (9) comprises a plurality of material storage boxes (901), a discharge hole of each material storage box (901) is communicated with the inside of the conveying pipe (6), a control valve II (902) and a material pump I (903) are arranged at the discharge hole of each material storage box (901), and the material pump I (903) is arranged on one side, close to the material storage boxes (901), of each control valve II (902).
  7. 7. The reaction system for preparing the light stabilizer according to claim 6, wherein the material storage box (901) is further provided with a feed inlet, the feed inlet is communicated with the inside of the conveying pipe (6), a control valve III and a material pump II are arranged at the communication position of the feed inlet and the conveying pipe (6), and the material pump II is arranged on one side, close to the material storage box (901), of the control valve III.
  8. 8. The reaction system for preparing the light stabilizer according to claim 1, wherein the purification system (10) is an extraction and purification system, a reflux pipe (12) is arranged at the top of the purification system, and the reflux pipe (12) is communicated with the reaction kettle (1).

Description

Reaction system for preparing light stabilizer Technical Field The utility model relates to the technical field of light stabilizer preparation, in particular to a reaction system for preparing a light stabilizer. Background Light stabilizer is one kind of additive for preventing polymer material from being degraded by ultraviolet irradiation and may be used widely in plastic, rubber, fiber and other fields. The preparation process involves a plurality of key links such as reaction, filtration, purification and storage, and the technical selection and optimization of each link have important influence on the quality and performance of the final product. In terms of reaction technology, the synthesis of light stabilizers generally requires precise control of the reaction conditions to ensure high purity and high yield of the product. For example, the reaction end point can be reached in a short time by dissolving the raw materials with ethanolamine in an alkaline environment and performing the reaction in a pipe circulation reactor. However, conventional reaction methods such as N-methylation of formaldehyde/formic acid produce brine waste which creates a pressure on the environment. In the aspects of filtration and purification technology, filtration is an important step for removing solid impurities or insoluble matters in the reaction process, and purification is a key link for ensuring high purity of the light stabilizer. The filter device is usually provided with a precise filter, so that impurities can be effectively removed, and the product yield and quality are improved. The purification method comprises extraction, recrystallization, column chromatography and the like, wherein the column chromatography utilizes the partition coefficient difference of different substances between a stationary phase and a mobile phase to separate, so that impurities can be effectively removed, and the purity of a target product is further improved. For example, the purity of the product can be remarkably improved by post-treatment methods such as cooling water washing, decoloring, filtering, cooling crystallization and the like. In terms of storage technology, the storage conditions of the light stabilizers have a direct influence on their stability and performance. Generally, light stabilizers are required to be stored under dry, light-tight, sealed conditions to prevent degradation due to moisture, light, or oxidation. For example, the storage conditions of the light stabilizer 622 require that its softening temperature is 55-80 ℃ and light transmittance reaches a certain standard at a specific wavelength to ensure its performance in long-term storage. By improving the reaction conditions, optimizing the filtration and purification technology and reasonable storage conditions, the production efficiency and the product quality of the light stabilizer can be remarkably improved, and the environmental impact is reduced. The utility model provides a reaction system for preparing a light stabilizer, which comprises a reaction device, a filtering device and a purifying device, and can realize high-efficiency and stable production of the light stabilizer with high quality and reduce production cost and energy consumption through the cooperative work of the parts. Disclosure of Invention The present utility model is directed to a reaction system for preparing a light stabilizer, which solves the problems set forth in the background art. In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a reaction system for preparing a light stabilizer, which comprises the following steps: The reaction kettle is of an open-top structure, an upper cover is arranged on the reaction kettle, and a cavity is formed in the side wall of the reaction kettle; the temperature control system is arranged in the cavity of the side wall of the reaction kettle; the feeding structure is arranged in the upper cover; the stirring structure is fixed on the upper cover and is suspended in the reaction kettle; The conveying pipe is arranged at the bottom of the reaction kettle and communicated with the reaction kettle, and a first control valve is arranged at the joint of the conveying pipe and the reaction kettle; the filtering device is arranged at one end of the conveying pipe far away from the reaction kettle; The material conveying system is arranged between the reaction kettle and the filtering device and is connected with the conveying pipe; the purification system is arranged on one side of the filtering device, which is far away from the conveying pipe, and the purification system is communicated with the filtering device; the storage tank is arranged on one side, far away from the conveying pipe, of the purification system. Further, the temperature control system comprises a temperature adjusting device, wherein the temperature adjusting device is arranged in the cav