New thiamine nitrate synthesis process

A technology of thiamine nitrate and a new process, which is applied in the field of thiamine nitrate synthesis new process to achieve the effects of reducing ammonia nitrogen content, reducing waste liquid treatment procedures, and reducing waste water treatment costs

Inactive Publication Date: 2018-04-13
江苏兄弟维生素有限公司
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Problems solved by technology

[0004] The purpose of the invention is: to overcome the deficiencies in the prior art, solve the problems in the prior art, provide a new synthesis process of thiamine nitrate, reduce the ammonia nitrogen content in the mother liquor of thiamine nitrate synthesis, reduce the waste liquid treatment procedure, Reduce waste water treatment costs

Method used

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Embodiment Construction

[0014] The technical solutions of the present invention will be described in detail below in combination with preferred embodiments.

[0015] The invention discloses a new process for synthesizing thiamine nitrate. The new process for synthesizing thiamine nitrate comprises the following steps: step 1, fully mixing a batch of thiamine sulfate oxidation solution and sodium nitrate aqueous solution at a mass ratio of 185:44; step 2 , and then prepare a certain amount of sodium bicarbonate into a saturated aqueous solution; step 3, use the prepared aqueous sodium bicarbonate solution to add dropwise to the mixed solution of thiamine sulfate oxidation solution and sodium nitrate aqueous solution until the pH value of the mixed solution reaches 7.0-7.5 ; Step 4, filtering and drying to obtain solid thiamine nitrate. The new process for synthesizing thiamine nitrate disclosed by the invention reduces the content of ammonia nitrogen in the mother liquor of thiamine nitrate synthesis,...

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Abstract

The invention discloses a new thiamine nitrate synthesis process, which comprises: 1, completely mixing a batch of thiamine sulfate oxidation solutions and a sodium nitrate aqueous solution accordingto a mass ratio of 185:44; 2, preparing a saturated aqueous solution by using a certain amount of sodium bicarbonate; 3, adding the prepared sodium bicarbonate aqueous solution into the mixed solutionof the thiamine sulfate oxidation solution and the sodium nitrate aqueous solution in a dropwise manner until the PH value of the mixed liquid is 7.0-7.5; and 4, filtering, and drying to obtain the solid thiamine nitrate. According to the present invention, with the new thiamine nitrate synthesis process, the ammonia nitrogen content in the thiamine nitrate synthesis mother liquor is reduced, thewaste liquid treatment process is reduced, and the wastewater treatment cost is reduced.

Description

technical field [0001] The present invention relates to the technical field of thiamine nitrate synthesis, in particular to a new synthesis process of thiamine nitrate. Background technique [0002] Thiamine nitrate is the nitrate of vitamin B1. Vitamin B1 is a compound formed by the combination of pyrimidine ring and thiazole ring. Because the molecule contains sulfur and amine, it is also named thiamine. Vitamin B1 naturally exists in foods such as rice bran, bran, lean meat, and peanuts. The pure product is usually prepared by chemical synthesis and is a necessary nutrient for humans and animals. The lack of vitamin B1 can easily cause certain diseases. Commercially available vitamin B1 generally exists in two forms of its nitrate (thiamine nitrate) and hydrochloride (thiamine hydrochloride). Thiamine hydrochloride is commonly used as injection because of its stronger water solubility, general medical vitamin B1 is thiamine hydrochloride, and thiamine nitrate is often us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D417/06
CPCC07D417/06
Inventor 李来成陈英明崔胜凯严建斌沈燕王龙海
Owner 江苏兄弟维生素有限公司
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