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Sodium methoxide production device and method

A production device and production method technology, applied in chemical instruments and methods, metal alcohol preparation, chemical industry, etc., can solve the problem of methanol steam not being fully utilized, and achieve the effects of high implementation value, short process, and low energy consumption

Pending Publication Date: 2020-09-08
天津市汇筑恒升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN110551003A "A system and process for producing sodium methoxide with heat pump compression cycle double towers" proposes that only the top of the methanol rectification tower is compressed to provide heat to the reaction rectification tower, and the methanol vapor generated by the methanol rectification tower is not obtained. Take advantage of

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  • Sodium methoxide production device and method
  • Sodium methoxide production device and method

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Effect test

Embodiment 1

[0050] A sodium methoxide production device, comprising a reactive distillation tower 4, a methanol rectification tower 7 and a compressor 9 connected by pipelines, characterized in that the reactive distillation tower 4 is used for the reaction of alcohol-alkali solution 1 and methanol to generate methanol The separation of sodium solution 6, water and sodium methoxide solution 6, the product of sodium methoxide solution 6 is extracted from the reaction distillation column 4 tower kettle;

[0051] Methanol rectification tower 7 is used for the precise separation of methanol and water, the discharge of waste water from the bottom of the tower reaches the standard, and the recycling of methanol at the top of the tower;

[0052] The compressor 9 is used for the methanol steam 8 at the top of the methanol rectification tower 7 to be pressurized and heated to enter the reactive rectification tower 4 again, so that methanol can be recycled between the reactive rectification tower 4 ...

Embodiment 2

[0055] Except the technical scheme of embodiment 1, also comprise following technical scheme:

[0056] Reactive distillation tower 4 tower tops are provided with second gas phase outlet 30, and methanol rectification tower 7 is provided with second gas phase inlet 31, and first gas phase inlet 28 is arranged on the tower still or the bottom of methanol rectification tower 7, and reactive distillation tower The second gas phase outlet 30 of 4 is connected with the second gas phase inlet 31 of the methanol rectification column 7 through a second pipeline 32 . The alcohol alkali solution and methanol carry out reactive rectification in the reactive rectification tower, and the tower still obtains the qualified sodium methoxide solution product, and the water-containing methanol vapor extracted from the top of the tower enters the methanol rectification tower through the second pipeline 32;

[0057] The top of the methanol rectification tower 7 is provided with a first gas phase o...

Embodiment 3

[0059] Except the technical scheme of embodiment 1 or 2, also comprise following technical scheme:

[0060] The water-containing methanol vapor extracted from the top of the tower enters the methanol rectification tower; the methanol vapor at the top of the methanol rectification tower enters the compressor, and after being compressed and heated by the compressor, part of it is used as the methanol gas phase feed to the reactor of the reaction rectification tower, and enters the reaction Rectification tower, after methanol vapor containing water is rectified and separated by the methanol rectification tower, the purity and production efficiency of the sodium methoxide solution 6 product in the reaction distillation tower 4 can be effectively improved; the purity of the methanol vapor 8 at the top of the methanol rectification tower 7 can be effectively improved , to effectively reduce the methanol content in the methanol distillation column 7 tower kettle wastewater, which can ...

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Abstract

The invention provides a sodium methoxide production device and method. The device includes: a reaction rectifying tower, which is used for reacting an alcohol-alkali solution with methanol to generate a sodium methoxide solution, separating water from the sodium methoxide solution, and extracting a sodium methoxide solution product from a tower kettle of the reaction rectifying tower; a methanolrectifying tower, which is used for precisely separating methanol and water, discharging the tower bottom wastewater after reaching the standard, and recycling the tower top methanol; and a compressor, which is used for enabling the methanol steam at the top of the methanol rectifying tower to be boosted and heated to enter the reaction rectifying tower again, thus recycling methanol between the reaction rectifying tower and the methanol rectifying tower. The invention has the beneficial effects that: the methanol steam at the top of the methanol rectifying tower enters a compressor, after being compressed and heated by the compressor, one part serves as a methanol gas-phase feed of the tower kettle of the reaction rectifying tower and enters the reaction rectifying tower, and the other part serves as a heat source of an intermediate reboiler of the methanol rectifying tower to undergo heat exchange with the intermediate reboiler, then cooling is performed, and the cooled methanol steam serves as tower top reflux and returns to the methanol rectifying tower, and the process is short, the energy consumption is low and the investment is low.

Description

technical field [0001] The invention relates to the technical field of chemical mass transfer and separation, in particular to a sodium methoxide production device and method. Background technique [0002] Sodium methoxide has a wide range of uses, mainly used in the pharmaceutical industry, as an important raw material for the synthesis of sulfa drugs such as sulfamethoxazole, sulfamethoxazole, and sulfa synergists; used in pesticide production and oil processing industries, in organic synthesis It is used as condensing agent, chemical reagent, fatty transesterification catalyst for edible oil treatment, etc.; it is also used as analytical reagent and widely used in spices, dyes and other industries. [0003] The traditional industrial production equipment of sodium methoxide mainly includes three parts: reaction tower, rectification tower and recovery tower. The reaction tower is mainly used to synthesize sodium methoxide with alkali and methanol, and the rectification tow...

Claims

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Application Information

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IPC IPC(8): C07C29/70C07C29/80C07C31/30C07C31/04
CPCC07C29/70C07C29/80C07C31/30C07C31/04Y02P20/10
Inventor 刘玉花张志恒张倩瑜李燕孙晓英王双平
Owner 天津市汇筑恒升科技有限公司