Reaction device for synthesizing levo terpineol

Abstract

The invention provides a reaction device for synthesizing levo terpineol and relates to a reaction device with pipe type fixed bed reactors for synthesizing the levo terpineol. The reaction device mainly comprises an evaporation kettle, a condenser and 2 to 10 pipe type fixed bed reactors connected in parallel or in series. The reaction device pushes raw materials to circularly flow between the evaporation kettle and the pipe type fixed bed reactors through evaporation natural circulation, adopts evaporation and reaction separation to contribute to precisely controlling the contact time and the reaction temperature of the raw materials and a catalyst, improving selectivity of the reaction, reducing side reactions and increasing yield, is provided with an evaporation chamber and a demister on a heating kettle to contribute to separating the raw materials from the products, reducing the levo terpineol generated by the reaction and entrained to the pipe type fixed bed reactors and improving reaction efficiency, and adopts the pipe type fixed bed reactors to contribute to reducing abrasion of catalyst granules, avoiding inactivation and prolonging service life. The reaction device effectively solves the problems of low reaction selectivity, many side reactions and low yield in the conventional synthesized levo terpineol. By the reaction device, the synthetic reaction of the levo terpineol can be performed under the best process condition; and the yield can reach over 65 percent.

Description

technical field [0001] The invention relates to a chemical synthesis device, in particular to a reaction device for synthesizing L-terpineol. Background technique [0002] Terpineol (terpineol), also known as sycamore oil and terpineol, is a monocyclic monoterpene alcohol compound with α-, β-, and γ-three isomers, of which α-terpineol is found in nature Most commonly, α-terpineol has three optically active forms: left-handed, dextrorotatory and racemic. Commercial terpineol is a racemic mixture mainly composed of α-terpineol. It is a colorless viscous liquid with The aroma of lilac is one of the main synthetic spice varieties, and the optically active L-α-terpineol has good effects in killing insects, sterilizing bacteria, and repelling mosquitoes, etc. With a certain synergistic effect, it has broad application prospects in pesticides, medicines, and daily chemicals. [0003] At present, there are two industrial production methods of terpineol: one is the traditional "two...

AI Technical Summary

Problems solved by technology

The traditional terpineol reaction device is basically a tank type with a stirrer, and the catalyst for the one-step synthesis of L-terpineol is a solid acid catalyst, and the tank reactor is prone to catalyst particle wear, deactivation, and reduced service life. Selectivity is poor, and by-product is more, has influenced the yield of terpineol

Considering factors such as the heating method of the reactor, the thermal conductivity, the viscosity of the raw material, and the lifespan of the catalyst particles, the reaction device for the one-step synthesis of L-terpineol is obviously not suitable for the tank reactor.

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