Device and method for producing sodium methoxide through recompression of mechanical steam

A technology for vapor recompression and production equipment, which can be used in organic chemistry, metal alcohol preparation, climate sustainability, etc., and can solve problems such as high energy consumption and complex process flow

Active Publication Date: 2015-06-03
JIANGSU LEKE ENERGY SAVING TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing systems and processes are complex and energy-intensive

Method used

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  • Device and method for producing sodium methoxide through recompression of mechanical steam

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Embodiment Construction

[0012] Refer to attached figure 1 , describe in detail the sodium methoxide production process and method provided by the invention. The working process of the device is as follows:

[0013] Turn on the raw material pump 3, the temperature from the lye storage tank 2 is 40°C, containing 10%H 2 O, 70%CH 3 The raw material 1 of OH and 20% NaoH is sent to the liquid phase inlet at the top of the sodium methoxide reaction tower 4 through the raw material pump 3, and flows from top to bottom. Afterwards, it flows from bottom to top after being mixed with 99.9% methanol vapor from the gas phase inlet at the bottom of the sodium methoxide reaction tower 4, and the NaOH in the raw material in the sodium methoxide reaction tower 4 chemically reacts with methanol to generate sodium methoxide and H 2 O, the sodium methoxide product with a sodium methoxide mass concentration of 28% is obtained from the liquid phase outlet at the bottom of the sodium methoxide reaction tower 4, and is d...

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Abstract

The invention discloses a device and method for producing sodium methoxide through recompression of mechanical steam, belonging to the field of energy saving. The device is characterized by comprising an alkali liquor storage tank (2), an alkali liquor pump (3), a sodium methoxide reaction tower (4), a sodium methoxide receiving tank (5), a sodium methoxide pump (6), a methanol rectifying tower (9), a first compressor (10), a second compressor (11), a phase change heat exchanger (12), a diluted methanol reflow pump (13), a methanol buffer tank (14), a methanol reflow pump (15), a diluted methanol receiving tank (16), a diluted methanol conveying pump (17) and a heat exchange jacket (20). According to the device, through additionally arranging the methanol steam compressor (10) and the phase change heat exchanger (12), the latent heat of gas phase methanol on the top of the methanol rectifying tower is recycled, the heat is provided for the methanol rectifying tower (9); and the heat is provided to a chemical synthesis process in the reaction tower by only consuming less steam, and a reboiler and a cooling tower are additionally provided for the rectifying tower, and thus the device is particularly suitable for energy saving and emission reducing reconstruction of an existing device for producing the sodium methoxide.

Description

technical field [0001] The invention relates to a mechanical steam recompression sodium methoxide production device and method, belonging to the field of energy saving. Background technique [0002] Sodium methoxide is an important raw material for the pharmaceutical industry, mainly used as a condensation agent, chemical reagent and catalyst in organic synthesis. Its industrial production process mainly includes two parts: a reaction tower and a rectification tower. The reaction tower is mainly used to synthesize sodium methoxide from alkali and methanol, and the rectification tower is mainly used to recover the excess methanol that has not participated in the reaction for rectification. Return to the reaction tower to continue Reacted. The reaction tower in the current production process mainly uses raw steam as the heat source, and in order to provide reflux liquid for the methanol rectification tower, it is necessary to add a cooling device to cool the gas phase product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C31/04C07C29/70
CPCY02P20/10Y02P20/50
Inventor 彭涛韩东夏君君
Owner JIANGSU LEKE ENERGY SAVING TECH CO LTD
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