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Preparation method of sodium butyrate

A kind of sodium butyrate, the technology of described sodium butyrate, is applied in carboxylate preparation, organic chemistry etc., can solve the problem such as sodium butyrate application research report is few, reach saving production man-hour and total cost, low price, The effect of reducing power costs

Inactive Publication Date: 2011-05-25
BEIJING CHALLENGE AGRI SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few reports on the application of sodium butyrate as a feed additive.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation of embodiment 1, sodium butyrate

[0023] Under normal pressure, control temperature is about 60 ℃, 90g 99% butyric acid is added dropwise in 41.6g NaOH aqueous solution (the molar ratio of butyric acid and NaOH is 1: 1), wherein, the mass percentage of NaOH in NaOH aqueous solution 35%; after the dropwise addition, the system was kept at 60°C for 2 hours, and the pH value of the system was 8.5. After the reaction, 60g of water was evaporated under normal pressure and then poured out, and then placed at 15°C for cooling and analysis. Crystallize for 8 hours to obtain a crystalline paste, and then dry the obtained paste at 110° C. for 15 hours to obtain 108 g of sodium butyrate, melting point: 250.0-253.0° C., yield 98%.

Embodiment 2

[0024] The preparation of embodiment 2, sodium butyrate-mass production verification situation

[0025] Draw in sodium hydroxide aqueous solution 980Kg (wherein, the mass percent composition of sodium hydroxide in this aqueous solution is 30%) from the head tank metering, add in 2000 liters of enamel reaction tanks, start stirring and jacket cooling water, from high position Add 652Kg of butyric acid into the metering tank, the reaction is violent in the tank, control the feeding at about 50°C, it needs to be added in 3-4 hours, then keep it at 70°C for 2 hours, put the material into the storage tank while it is hot, and prepare for spray drying: a , Equipment preheating: first heat the heat exchanger, and at the same time turn on the induced draft fan and blower to make the equipment inlet air temperature 130-150°C and outlet air temperature 110-120°C, and prepare to start the pump to spray materials; b. Turn on the pump and store it in advance The liquid sodium butyrate solu...

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Abstract

The invention provides a preparation method of sodium butyrate, and the method comprises the following steps: dropwisely adding butyric acid into an NaOH water solution to react; and after the reaction finishes, evaporating out water in the system, and drying to obtain the sodium butyrate. By using the preparation method provided by the invention, after the reaction finishes, all the water is evaporated out, and drying is carried out so as to obtain the target product. The process route is optimally selected, and special drying equipment capable of ensuring fewer side reaction impurities and large-scale production is directly used for drying, thereby reducing the labor intensity, saving the production time and greatly increasing the yield which can be higher than 98%.

Description

technical field [0001] The invention relates to a preparation method of sodium butyrate, which belongs to the field of organic synthesis. Background technique [0002] Sodium butyrate (sodium n-butyrate), the English name is Sodium Butyrate, the CAS number is 156-54-7, and the molecular formula is C 4 h 7 o 2 Na, molecular weight 110.09, auto-ignition temperature 425.0°C, flash point 69.0°C, melting point 250.0-253.0°C, bulk density 0.96gms / cm 3 (20.0°C). This product is a white to off-white, fluffy, hygroscopic powder with a special smell of rancid cheese, easily soluble in water, and the pH value of the aqueous solution is alkaline. [0003] Sodium butyrate is widely used in food, medicine, chemical industry, cosmetics, feed, breeding and other industries, and is one of the feed additive varieties allowed in my country. It can play its unique role as a component of compound acidifier, electrolyte balance regulator, gastrointestinal microecological balance regulator, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C53/124C07C51/41
Inventor 崔立安郭衍涛高秀华杨禄良王晓睿郄彦昭
Owner BEIJING CHALLENGE AGRI SCI & TECH CO LTD
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