Novel benzotriazole crystallization device

Abstract

The invention relates to a novel benzotriazole crystallization device. The novel benzotriazole crystallization device comprises a crystallization kettle body, wherein the outer side of the crystallization kettle body is connected with a cooling interlayer, one side of the outer wall of the cooling interlayer is connected with a water inlet pipe, a refrigerating machine is arranged on the water inlet pipe, the other side of the outer wall of the cooling interlayer is connected with a water output pipe, a spiral cooling water pipe is arranged in the crystallization kettle body, two ends of the spiral cooling water pipe run through and are connected with the outer wall of the crystallization kettle body respectively, a charging hole and a driving motor are arranged at the top of the crystallization kettle body, and the bottom of the driving motor is connected with a stirring shaft. The novel benzotriazole crystallization device provided by the invention has the advantages that cold wateris introduced by virtue of the arranged water inlet pipe, the cold water enters the cooling interlayer and the spiral cooling water pipe and circulates, cooling crystallization is carried out on materials in the crystallization kettle body, the cooling interlayer and the spiral cooling water pipe cooperate with each other, and a good cooling effect is achieved, so that efficiency is increased; meanwhile, a secondary stirring blade is arranged in a main stirring blade, the secondary stirring blade rotates in a rectangular hole while the main stirring blade rotates, and the materials are comprehensively stirred.

Description

technical field [0001] The invention relates to a novel benzotriazole crystallization device, which belongs to the field of crystallization devices. Background technique [0002] Benzotriazole is widely used in anti-rust oil (grease) products, and is mostly used as a gas-phase corrosion inhibitor for copper and copper alloys, a circulating water treatment agent, an automobile antifreeze, a photographic anti-fog agent, a polymer stabilizer, and a plant growth agent. Regulators, lubricating oil additives, UV absorbers, etc. [0003] In the process of producing benzotriazole, in order to ensure the quality of the product, it needs to be dissolved in water, filtered with activated carbon to remove the impurities, and the solution after removing the impurities is extracted by water-cooled crystallization. The crystallization equipment is a pool with an interlayer , Benzotriazole is dissolved in warm water and filtered through activated carbon for impurities. The filtered solutio...

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Problems solved by technology

[0004] The invention proposes a new type of benzotriazole crystallization device, which solves the problems of long crystallization time, low efficiency and waste of energy in the cooling crystallization of benzotriazole in the prior art. Cold water, cold water enters the cooling interlayer and circulates in the spiral cooling water pipe to cool and crystallize the material in the crystallization kettle. The cooling interlayer and the spiral cooling water pipe cooperate to achieve a good cooling effect and improve efficiency. Stirring blade, when the main stirring blade rotates, the auxiliary stirring blade rotates in the rectangular hole to fully stir the material

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