Method for preparing 2-hydroxy-4-methylmercapto copper butyrate

Abstract

The invention relates to a method for preparing 2-hydroxy-4-methylmercapto copper butyrate, which comprises the following specific steps of: (1) salifying, namely putting 2-hydroxy-4-methylmercapto butyric acid, an initiator and water into a reaction kettle, heating to the temperature of between 70 and 80 DEG C with stirring, adding basic copper carbonate in batches, and reacting under stirring until carbon dioxide bubbles do not overflow to obtain solution of 2-hydroxy-4-methylmercapto copper butyrate; and (2) drying, namely performing centrifugal separation on the product obtained in the step (1), putting the granular product obtained by separation into an up-down ventilated drying sieve, putting the sieve into a dying box to dry for 22 to 26 hours to obtain a crude product, and sieving the crude product to obtain the finished product of the 2-hydroxy-4-methylmercapto copper butyrate. The innovative basic copper carbonate and the initiator are used as raw materials in the production process, so the preparation method has the advantages of convenient operation and easy implementation; and the obtained granular product is more favorable for drying without being crushed, so production equipment investment can be reduced and the production efficiency and economic benefit can be improved.

Description

technical field [0001] The invention belongs to the field of organic chemistry and relates to a method for preparing organic compounds, in particular to a method for preparing copper 2-hydroxy-4-methylthiobutyrate. Background technique [0002] Among organic mineral additives for animal feed, copper 2-hydroxy-4-methylthiobutyrate, as an organic copper mineral additive, has attracted more and more attention and has broad application prospects. At present, the production method of copper 2-hydroxy-4-methylthiobutyrate usually utilizes sodium 2-hydroxy-4-methylthiobutyrate to react with copper sulfate. This type of preparation method has the following problems: 1. The resulting product is viscous and difficult to sell, so it needs to be further dried, and during the high-temperature drying process, the product has poor air permeability, slow moisture evaporation, is not easy to dry, and is easy to be cloudy. Combustible, very dangerous, need to add automatic turning equipment,...

AI Technical Summary

Problems solved by technology

This type of preparation method has the following problems: 1. The resulting product is viscous and difficult to sell, so it needs to be further dried, and during the high-temperature drying process, the product has poor air permeability, slow evaporation of water, is not easy to dry, and is easily clouded. Combustible, very dangerous, need to add automatic turning equipment, resulting in many and complicated equipment, high production cost; 2. When crushing and processing dried products, a large amount of dust is generated, resulting in a bad working environment, and it is difficult for enterprises to produce in large quantities, which is not conducive to The development of enterprises and the improvement of economic benefits