Continuous production process for sodium methoxide by using metal sodium method

A production process and technology for sodium metal, applied in the field of continuous production process of sodium methoxide by sodium metal method, can solve the problems of large floor space, many hidden safety hazards, high labor cost, etc., and achieve small floor space, convenient operation and stable product. Effect

Inactive Publication Date: 2018-01-19
ANHUI PROVINCE CHEM IND DESIGN INST
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  • Abstract
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Problems solved by technology

[0008] 2) The operation procedure of feeding solid metal sodium is complicated, and it is easy to contact with contraindicated water, so there are many safety hazards and great safety risks;
[0009] 3) Large-scale production cannot be realized;
[0010] 4) It is a labor-intensive production process, and the labor cost is very high;
[0011] 5) Large area and large investment

Method used

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  • Continuous production process for sodium methoxide by using metal sodium method

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 Shown, a kind of metal sodium method sodium methylate continuous production process is divided into three steps: preparation stage, metal sodium melting stage, continuous production operation stage;

[0032] Step 1) In the preparation stage, nitrogen replacement is carried out to the reaction unit system, and the metal sodium feed regulating valve 10, the methanol feed regulating valve 11, the sodium methylate discharge regulating valve 12 and the vent valve 13 are closed, and then to the reaction kettle 3, the circulating pump 4. Filter 5, circulating liquid cooler 6, primary condenser 7, secondary condenser 8 and their pipelines are filled with nitrogen gas. When the pressure on the reactor 3 reaches 0.1MPa, open the vent valve 3 to release the pressure, repeat 3 After the above procedures, open the vent val...

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Abstract

The invention discloses a continuous production process for sodium methoxide by using a metal sodium method. The process is innovated in that an intermittent production process for sodium methoxide byusing the metal sodium method is changed into a continuous production process. The process has the characteristics that the continuous production process for sodium methoxide by using a solid metal sodium method is realized; solid metal sodium is heated to be fused into liquid metal sodium by using an electric heating method in the process, so that the possibility that metal sodium is in contactwith water is avoided, and nitrogen gas is used as a shielding gas in the process, so that the possibility that metal sodium is in contact with air is avoided, and the safety is greatly guaranteed; solid metal sodium is fused into liquid metal sodium to realize liquid flow for automatic and continuous feeding; the process is simple, convenient to operate and capable of realizing mass production, and the product is stable; and the continuous production process is low in investment and small in floor area.

Description

technical field [0001] The invention belongs to the field of chemical industry, and specifically relates to a continuous production process of sodium methoxide by metal sodium method. Background technique [0002] Sodium methoxide solution is widely used in a wide range of fields, such as pharmaceuticals, pesticides, dyes, and bioenergy. In terms of medicine, it is the raw material of vitamin B1, A and sulfadiazine, and it is a catalyst for organic synthesis when used in the production of pesticides. In the oil processing industry, sodium methoxide is also used as a catalyst for processing edible fat and edible oil to change the fat structure. It is also used as an analytical reagent and is widely used in spices, pesticide production, dyes and other industries. [0003] Production Process: [0004] Methanol reacts with liquid sodium metal to produce sodium methoxide. [0005] Chemical reaction formula: 2CH 3 OH+2Na=2CH 3 ONa+H 2 ↑ [0006] The defective that existing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/70C07C31/30
Inventor 王奎
Owner ANHUI PROVINCE CHEM IND DESIGN INST
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