Technique of alkaline process for producing sodium methoxide/sodium ethylate

A technology of sodium ethoxide and alkali method, applied in the field of alkali production of methyl ethylate/sodium ethoxide, can solve the problems of inconvenient automatic production, low production efficiency, long production cycle and the like, and achieve the effects of shortening production cycle, high production efficiency and easy operation

Inactive Publication Date: 2005-06-15
于志波
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Problems solved by technology

In the alkaline production method, the dehydration of alcohol is the key. The existing method is to dehydrate the water-containing alcohol vapor by rectification. The production cycle is long, the production efficiency is low, and the consumption is high. It is not convenient to realize continuous and automatic production.

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  • Technique of alkaline process for producing sodium methoxide/sodium ethylate

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0015] In the process of producing sodium methoxide by the alkaline method of the present invention, the methanol vapor produced by the reboiler carries the dehydrated methanol gas and 50-80% sodium hydroxide methanol solution into the reactor continuously, and the water-containing methanol vapor produced by the reaction is After being pressurized to about 0.17Mpa by the supercharger, it enters from the bottom of the molecular sieve I for dehydration. In the molecular sieve I, water is absorbed by the micropores of the molecular sieve (containing about 25% methanol), and methanol with a content of more than 99.8% is obtained from the top of the molecular sieve I The gas returns to the reactor to continue to participate in the reaction; when the adsorption of molecular sieve I is close to saturation, switch to molecular sieve II to continue the adsorption...

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Abstract

A process for preparing sodium methoxde (or ethoxide) by alkali method includes reaction between excess methanol (or ethanol) and sodium hydroxide to obtain product, dewatering the vapour of methanol (or ethanol) by parallel two molecular sieves for alternative adsorption and desorption, and rectifying the solution of methanol (or ethanol) for reuse. Its advantage is no pollution.

Description

technical field [0001] The invention relates to a new process for producing sodium methylate / ethoxide by an alkali method, which belongs to the technical field of chemical synthesis. Background technique [0002] The traditional sodium method to produce sodium formazan / ethanolate is to react formazan / ethanol with sodium metal. The raw material cost of sodium metal is high, its activity is high, it is flammable and explosive, and it is dangerous. Alkali production uses methyl / ethanol and sodium hydroxide to react, which is suitable for industrial production. In the alkaline production method, the dehydration of alcohol is the key. The existing method is to dehydrate the water-containing alcohol vapor by rectification. The production cycle is long, the production efficiency is low, and the consumption is high. It is not convenient to realize continuous and automatic production. Contents of the invention [0003] The purpose of the present invention is to provide a new proce...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/70C07C31/30
Inventor 于志波
Owner 于志波
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