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Preparation method of high-purity potassium methoxide

A high-purity technology of potassium methoxide, which is applied in the field of preparation and preparation of high-purity potassium methoxide, can solve the problem that the product contains a lot of impurities, and achieve the effect of low requirements and simple preparation method

Inactive Publication Date: 2019-02-22
徐州善势信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process, it is necessary to use anhydrous methanol and strong alkali as raw materials for synthesis. However, due to the purity of raw materials and production equipment in actual production, the obtained product contains many impurities. Therefore, how to improve the purity has become an urgent problem in production. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of potassium methylate comprises the steps:

[0017] (1) Put potassium hydroxide into the holding tank, put the anhydrous methanol in the rectification equipment into the holding tank at the same time, the mass ratio of potassium hydroxide and anhydrous methanol is 1:4, and the formed potassium hydroxide solution The solute content is 20wt%, and the lye temperature is 50°C;

[0018] (2) pump out the potassium hydroxide solution in the holding tank, enter the reaction tower from the upper inlet of the reaction tower after being heated by a heater;

[0019] (3) The anhydrous methanol flowing out of the rectification atmospheric tower is evaporated by the evaporator to form anhydrous methanol vapor and input into the reaction tower; potassium hydroxide solution and steam are continuously countercurrently contacted and reacted in the reaction tower to produce potassium methylate solution Discharge from the bottom of the tower to the product collectio...

Embodiment 2

[0023] The preparation method of potassium methylate comprises the steps:

[0024] (1) Put potassium hydroxide into the holding tank, put the anhydrous methanol in the rectification equipment into the holding tank at the same time, the mass ratio of potassium hydroxide and anhydrous methanol is 1:4, and the formed potassium hydroxide solution The solute content is 20wt%, and the lye temperature is 45°C;

[0025] (2) pump out the potassium hydroxide solution in the holding tank, enter the reaction tower from the upper inlet of the reaction tower after being heated by a heater;

[0026] (3) The anhydrous methanol flowing out of the rectification atmospheric tower is evaporated by the evaporator to form anhydrous methanol vapor and input into the reaction tower; potassium hydroxide solution and steam are continuously countercurrently contacted and reacted in the reaction tower to produce potassium methylate solution Discharge from the bottom of the tower to the product collectio...

Embodiment 3

[0030] The preparation method of potassium methylate comprises the steps:

[0031] (1) Put potassium hydroxide into the holding tank, put the anhydrous methanol in the rectification equipment into the holding tank at the same time, the mass ratio of potassium hydroxide and anhydrous methanol is 1:3, and the formed potassium hydroxide solution The solute content is 25wt%, and the lye temperature is 50°C;

[0032] (2) pump out the potassium hydroxide solution in the holding tank, enter the reaction tower from the upper inlet of the reaction tower after being heated by a heater;

[0033] (3) The anhydrous methanol flowing out of the rectification atmospheric tower is evaporated by the evaporator to form anhydrous methanol vapor and input into the reaction tower; potassium hydroxide solution and steam are continuously countercurrently contacted and reacted in the reaction tower to produce potassium methylate solution Discharge from the bottom of the tower to the product collectio...

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PUM

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Abstract

The invention discloses a preparation method of high-purity potassium methoxide. The preparation method comprises the following steps: putting potassium hydroxide into a containing tank, and simultaneously putting absolute methanol in rectification equipment into the containing tank, wherein the solute content of a formed potassium hydroxide solution is 20 to 25 weight percent; pumping out the potassium hydroxide solution in the containing tank, and entering a reaction tower after heating; rectifying absolute methanol steam flowing out from an atmospheric tower, and inputting the absolute methanol steam into the reaction tower; enabling the potassium hydroxide solution to react with the steam in the reaction tower, and discharging a produced potassium methoxide solution from the tower bottom into a product collection tank; collecting and processing matters in the product collection tank, thus obtaining the high-purity potassium methoxide; discharging mixed steam of generated methanol and water, then discharging through an outlet in the top part of the reaction tower, and further separating, thus obtaining a methanol product. The preparation method disclosed by the invention is simple, and the requirements on equipment are not high; the prepared potassium methoxide is higher in purity, the purity can be up to 99.90 weight percent, various using demands can be met, and the high-purity potassium methoxide can be widely popularized and applied to industry.

Description

technical field [0001] The invention relates to a preparation method, in particular to a preparation method of high-purity potassium methoxide, belonging to the field of chemical production. Background technique [0002] Potassium methoxide is a product of methanol, which is widely used in the chemical industry. In the production process, it is necessary to use anhydrous methanol and strong alkali as raw materials for synthesis. However, due to the purity of raw materials and production equipment in actual production, the obtained product contains many impurities. Therefore, how to improve the purity has become an urgent problem in production. question. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the object of the present invention is to provide a preparation process of high-purity potassium methoxide, and the obtained potassium methoxide has high purity and can meet various usage requirements. [0004] For achieving the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/30C07C29/70
CPCC07C29/70C07C31/30
Inventor 廖逸
Owner 徐州善势信息科技有限公司