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Purification method of highly pure organic solvent n-butanol

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, simple purification method and high product purity

Active Publication Date: 2012-10-17
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 of highly pure organic solvent n-butanol

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Embodiment 1

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

[0021] (1) Lift the raw material n-butanol (with a content of about 99.5%) 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 in height and 3.8cm in diameter, and the two columns are respectively equipped with Silica gel and diatomaceous earth, the particle sizes are 0.5~1.0mm and 0.3mm~0.8mm respectively, two columns are connected in series, and the amount of adsorbent is 4 / 5 of the column height. In the column, n-butanol fully contacts with silica gel and diatomaceous earth adsorbents to remove most organic impurities such as aldehydes, ketones, and esters. Enter the next step, and remove the fraction before adsorption.

[0022] (2) The n-butanol that above-mentioned adsorption column flows out enters drying column, column height 1.2M, diameter 3.8cm, packs the anhydrous magnesium sulfat...

Embodiment 2

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

[0027] (1) Lift the raw material n-butanol (content about 99.5%) 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 in height and 3.8cm in diameter, and the two columns are respectively equipped with Silica gel and diatomaceous earth, the particle sizes are 0.5~1.0mm and 0.3mm~0.8mm respectively, two columns are connected in series, and the amount of adsorbent is 4 / 5 of the column height. In the column, n-butanol fully contacts with silica gel and diatomaceous earth adsorbents to remove most organic impurities such as aldehydes, ketones, and esters. Enter the next step, and remove the fraction before adsorption.

[0028] (2) the n-butanol that above-mentioned adsorption column flows out enters drying column, column height 1.2M, diameter 3.8cm, packs through the anhydrous potassium carbona...

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Abstract

The invention relates to a purification method of highly pure organic solvent n-butanol. The method comprises the following steps of: removing most aldehyde, ketone and ester impurities in the raw material n-butanol by adsorption of silica gel and a diatomite column; drying and dewatering by a drying agent of anhydrous magnesium sulphate or anhydrous potassium carbonate; rectifying; filtering; and packing to obtain the highly pure organic solvent n-butanol. The purification method provided by the invention can obtain the highly pure organic solvent n-butanol with the purity over 99.9%; the yield of the n-butanol is more than 92%; the qualified rate of the n-butanol is more than 92%; the application need of users of highly pure organic solvent n-butanol (HPLC) (high performance liquid chromatography) in the scientific research and the subject research can be satisfied; compared with the traditional methods, the n-butanol obtained by the method provided by the invention is high in the purity; the operation is simple; the quality of the product is stable, and thus the method is applied to the scale production.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and relates to a method for purifying an organic solvent, in particular to a method for purifying a high-purity organic solvent n-butanol. Background technique [0002] N-butanol is mainly used as a solvent, dehydrating agent, anti-emulsifier and extractant for oil, spices, drugs, hormones, etc. It is used as a shrinkage agent and co-solvent in the chemical industry, as a standard in chromatographic analysis and in scientific research experiments. high-purity reagents. The content of conventional n-butanol reagent is about 99.5%, and 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 reach the standards of high-purity organic solvents befor...

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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