Method for purifying high-purity organic solvent-acetone for scientific research

A technology of organic solvent and purification method, which is applied in the field of purification of high-purity organic solvent acetone for scientific research, can solve the problems of unsuitable purification of high-purity acetone, and achieve the effects of saving manpower, reducing energy consumption, and significant economic benefits

Inactive Publication Date: 2009-09-30
天津市康科德科技有限公司 +1
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Problems solved by technology

This kind of acetone cannot meet the needs of relevant scientific research experiments, so this kind of acetone must be further purified so that its various technical indicators can reach the standards of chromatographic grade and pesticide residue grade acetone before it can be used
[0003] At present, domestic information on acetone purification mostly focuses on the recovery and utilization of acetone in waste liquid. The patent numbers are: 200710028462.4 and 200710060107.5 respectively provide related methods and devices for the recovery of acetone in waste liquid, but they are not applicable In the purification of high-purity acetone (content 99.5%)

Method used

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  • Method for purifying high-purity organic solvent-acetone for scientific research

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Embodiment 1

[0021] A kind of purification method of high-purity organic solvent acetone for scientific research, the steps are as follows:

[0022] (1) Lift the raw acetone (content is about 99.5%) above the adsorption tower, wherein the adsorption tower is 2M high, 10cm in diameter, and the amount of adsorption resin inside is 4 / 5 of the tower height, and the acetone raw material is adsorbed at a speed of 20mL / min ; In the tower, acetone is fully contacted with the adsorption resin, so that the unsaturated hydrocarbon impurities are adsorbed, and the quality of the adsorbed liquid is detected, and the quality of the adsorbed liquid is tested to be qualified (that is, the indicators of the effluent are close to the chromatographic level and the technology of the pesticide residue level. Index requirements, its specific technical index requirements are shown in Table 1), enter the next step operation, and remove the fraction before adsorption with high impurity.

[0023] (2) The acetone fl...

Embodiment 2

[0026] A kind of purification method of high-purity organic solvent acetone for scientific research, the steps are as follows:

[0027] (1) The raw material acetone (content is about 99.5%) is lifted above the adsorption tower, the adsorption tower is 2M high, the diameter is 10cm, the amount of built-in adsorption resin is 4 / 5 of the tower height, and the acetone raw material is adsorbed at a speed of 80mL / min, After the adsorption effluent is qualified, enter the next step of operation; and remove the fraction with high impurities before adsorption.

[0028] (2) The effluent of the above-mentioned adsorption tower is entered into the drying tower, the tower height is 2M, and the diameter is 10cm, and the anhydrous potassium carbonate through baking and drying is packed into, and the moisture content of the acetone after measurement is dried, and the moisture content is controlled at ≤0.2%. Enter the next step after passing the test; when the moisture content is greater than ...

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Abstract

The invention relates to a method for purifying a high-purity organic solvent-acetone for scientific research, which comprises the following steps that: acetone as the raw material is adsorbed to remove impurities by an adsorption resin, dried to remove water by a drying agent, rectified by a rectifying still, filtered and packaged to obtain a chromatographic grade and pesticide residue grade acetone product. The method can obtain the chromatographic acetone product with the purity more than 99.9 percent, ensure that the yield is more than 93 percent and the qualification rate is more than 95 percent, can obtain a 50 to 60 percent pesticide residue grade acetone reagent, can meet the application demand of high efficiency liquid chromatography (HPLC) customers on pesticide residue, and fill in the gap of the national production of pesticide residue grade chromatography reagents; and at the same time, compared with the prior method, the method has high product purity, simple and convenient operation and stable operation, and is suitable for mass 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 acetone, a high-purity organic solvent used in scientific research. Background technique [0002] The acetone reagent sold on the market has an acetone content of about 99.5%, which contains a small amount of unsaturated hydrocarbons, water and other impurities. This kind of acetone cannot meet the needs of relevant scientific research experiments, so this kind of acetone must be further purified so that its various technical indicators can reach the standards of chromatographic grade and pesticide residue grade acetone before it can be used. [0003] At present, domestic information on acetone purification mostly focuses on the recovery and utilization of acetone in waste liquid. The patent numbers are: 200710028462.4 and 200710060107.5 respectively provide related methods and devices for t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C49/08C07C45/79C07C45/82
Inventor 宋金链张玉芝
Owner 天津市康科德科技有限公司
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