Acetonitrile production reactor and preparing method thereof

Abstract

The invention discloses an acetonitrile production reactor and a preparing method thereof. The acetonitrile production reactor comprises a reaction kettle provided with a clamping sleeve. A vertically-arranged partition plate is arranged in the reaction kettle, and the reaction kettle is divided by the partition plate into a left cavity and a right cavity, wherein the upper portion of the left cavity and the upper portion of the right cavity are communicated; feeding inlets are formed in the tops of the cavities, and discharging openings are formed in the bottoms of the cavities; a material mixing pipe for being communicated with the two cavities is arranged on the reaction kettle, feeding pipes for feeding a sodium hydroxide solution and a formaldehyde solution are connected on the material mixing pipe, and a control mechanism for the feeding pipe is arranged on the reaction kettle. According to the acetonitrile production reactor and the preparing method thereof, the two cavities are formed in the reaction kettle, cross flowing of materials in the two cavities is achieved through the material mixing pipe, and all the materials are more fully and evenly mixed; as the sodium-hydroxide-solution feeding pipe and the formaldehyde-solution feeding pipe are additionally arranged on the material mixing pipe, pipe plugging can be conveniently treated.

Description

technical field [0001] The invention relates to chemical equipment, in particular to an acetonitrile production reactor and a preparation method thereof. Background technique [0002] Acetonitrile, also known as methyl cyanide, is a colorless liquid, highly volatile, has a special odor similar to ether, has excellent solvent performance, and can dissolve various organic, inorganic and gaseous substances. It has certain toxicity and is infinitely miscible with water and alcohol. Acetonitrile can undergo typical nitrile reactions and is used to prepare many typical nitrogen-containing compounds. It is an important organic intermediate. Acetonitrile can be used as a solvent for the synthesis of vitamin A, cortisone, carbon amine drugs and their intermediates, and as an active medium solvent for the manufacture of vitamin B1 and amino acids. Can replace chlorinated solvents. It is used in vinyl paints, as an extractant of fatty acids, alcohol denaturants, butadiene extractant...

AI Technical Summary

Problems solved by technology

[0003] In the existing acetonitrile reactor, sodium hydroxide solution and formaldehyde solution are generally directly added to the feed line of the acetonitrile reactor. Since the sodium hydroxide solution and formaldehyde solution contain particles, it is easy to block the feed pipeline and troublesome to deal with.

In addition, the mixing of various materials in the existing acetonitrile reactor is realized through the stirring device in the reactor. The stirring device directly contacts the materials, and the materials will corrode the parts in the stirring device, which may easily cause damage to the stirring device. , short service life, high maintenance cost, and the existing acetonitrile reactor only has a heating system, but no cooling system. If the temperature is too high, it will affect the reaction of acetonitrile and reduce the reaction efficiency

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