Continuous production method for perfluoro tripropylamine

Abstract

The invention discloses a continuous production method for prefluoro tripropylamine. The continuous production method for prefluoro tripropylamine comprises the following steps of: (1) filling filler into a fluoration reactor, and then introducing fluorine mixed gas for fluoridizing; (2) adding tripropylamine into a tripropylamine vaporizer by a feeder; (3) introducing nitrogen into the tripropylamine vaporizer, diluting tripropylamine steam and continuously carrying the diluted tripropylamine into the fluoration reactor; (4) continuously introducing fluorine nitrogen mixed gas into the fluoration reactor to react with the diluted tripropylamine steam mixed gas continuously introduced into the fluoration reactor, and collecting reaction products; and (5) washing the reaction products with alkali, then washing with water, rectifying and purifying to finally obtain prefluoro tripropylamine. According to the continuous production method for prefluoro tripropylamine, fluorine simple substance or diluent fluorine gas is adopted as an activating agent, and feeding ratio of a fluoration agent to tripropylamine, reaction temperature and reaction time are accurately controlled, so that organic reactant is fluorated completely; and breakage of intramolecular C-C bonds is reduced to the utmost extent, and production efficiency of the prefluoro tripropylamine target product is improved.

Description

technical field [0001] The invention relates to a continuous production method of artificial blood raw materials and perfluorotripropylamine, a special working medium used in the manufacturing process of semiconductor devices. Background technique [0002] In the past, the preparation methods of perfluorotripropylamine include cobalt trifluoride fluorination method and electrolytic fluorination method. The cobalt trifluoride fluorination method needs to convert cobalt oxide or cobalt dioxide into cobalt trifluoride by fluorination first, and then cobalt trifluoride reacts with tripropylamine in the reactor to obtain a mixture containing perfluorotripropylamine; cobalt fluoride Continuous regeneration is required, the temperature of the reactor is difficult to control uniformly, the amplification is limited, the production cannot be carried out continuously, and it is not suitable for mass production. In addition, the electrolytic synthesis of perfluorotripropylamine is comp...

AI Technical Summary

Problems solved by technology

The cobalt trifluoride fluorination method needs to convert cobalt oxide or cobalt dioxide into cobalt trifluoride by fluorination first, and then cobalt trifluoride reacts with tripropylamine in the reactor to obtain a mixture containing perfluorotripropylamine; cobalt fluoride Continuous regeneration is required, the temperature of the reactor is difficult to control uniformly, the amplification is limited, the production cannot be carried out continuously, and it is not suitable for mass production

In addition, the electrolytic synthesis of perfluorotripropylamine has complicated equipment, difficult condition control, many by-products, and low yield, generally no more than 30%.