Purification method for high-purity organic solvent n-butyl alcohol

A technology of organic solvent and purification method, which is applied in the field of purification of high-purity organic solvent n-butanol, can solve the problems of undiscovered patent documents, etc., and achieve the effects of saving manpower, significant economic benefits, and stable operation

Inactive Publication Date: 2012-10-24
天津康科德医药化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Through the search, no published patent documents related to the application of the present invention were found

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  • Purification method for high-purity organic solvent n-butyl alcohol

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Embodiment 1

[0020] A purification method of high-purity organic solvent n-butanol, the steps are as follows:

[0021] ⑴ The raw material n-butanol (content is about 99.5%) is lifted to the top of the adsorption column, and the n-butanol raw material is adsorbed at a speed of 60mL / min; the adsorption column is 1.2M high and 3.8cm in diameter. The two columns are respectively equipped with silica gel, Diatomaceous earth, the particle size is 0.5~1.0mm and 0.3mm~0.8mm, two columns are connected in series, the amount of adsorbent is 4 / 5 of the column height. In the column, n-butanol is in full contact with silica gel and diatomaceous earth adsorbent to adsorb and remove most of the organic impurities such as aldehydes, ketones and esters. After the adsorbed liquid is nearly qualified (see Table 1 for specific technical indicators), Go to the next step and remove the pre-adsorption fraction.

[0022] ⑵Put the n-butanol flowing out of the adsorption column into the drying column, the column height ...

Embodiment 2

[0026] A purification method of high-purity organic solvent n-butanol, the steps are as follows:

[0027] ⑴ The raw material n-butanol (content is about 99.5%) is lifted to the top of the adsorption column, and the n-butanol raw material is adsorbed at a speed of 120mL / min; the adsorption column is 1.2M high and 3.8cm in diameter. The two columns are equipped with silica gel, Diatomite, the particle size of which is 0.5~1.0mm and 0.3mm~0.8mm, two columns are connected in series, the amount of adsorbent is 4 / 5 of the column height. In the column, n-butanol is in full contact with silica gel and diatomaceous earth adsorbent to adsorb and remove most of the organic impurities such as aldehydes, ketones and esters. After the adsorbed liquid is nearly qualified (see Table 1 for specific technical indicators), Go to the next step and remove the pre-adsorption fraction.

[0028] ⑵Put the n-butanol flowing out of the adsorption column into the drying column, the column height is 1.2M, the...

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Abstract

The invention relates to a purification method for high-purity organic solvent n-butyl alcohol. The purification method comprises the steps that raw material of n-butyl alcohol is adsorbed by silica gel and kieselguhr column to remove most of impurities of aldehydes, ketones and esters, then is dried and dewatered by drying agents such as anhydrous magnesium sulfate or anhydrous potassium carbonate, and finally rectified, filtered and packed to obtain a high-purity organic solvent n-butyl alcohol product. The high-purity organic solvent n-butyl alcohol product with the purity larger than 99.9% can be obtained through the purification method, the yield is more than 92%, the percent of pass is higher than 92%, and the application requirements of the high purity organic solvent (HPLC) n-butyl alcohol in fields of scientific researches, research projects and the like are met. Simultaneously, compared with a general method, the purification method is high in production purification, simple to operate, stable in product quality and suitable for scale production.

Description

Technical field [0001] The invention belongs to the technical field of chemical engineering, and relates to a purification method of an organic solvent, in particular to a purification method of a high-purity organic solvent n-butanol. Background technique [0002] N-butanol is mainly used as solvent, dehydrating agent, demulsifier, and extractant for oils, perfumes, drugs, hormones, etc. It is used as shrinking agent and cosolvent in the chemical industry, as a standard substance in chromatographic analysis and in scientific research experiments. High purity reagents in medium. The content of conventional n-butanol reagent is about 99.5%, of which the main impurities are water and a small amount of organic impurities such as aldehydes, ketones and esters. This kind of n-butanol cannot meet the needs of users of high-purity organic solvent n-butanol, so this kind of n-butanol must be further purified so that its various technical indicators can meet the standards of high-purity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/12C07C29/76
Inventor 宋金链张玉芝
Owner 天津康科德医药化工有限公司
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