Synthesis method of isobutyl vinyl ether and device thereof

Abstract

The invention discloses a synthesis method of isobutyl vinyl ether and a synthesis device thereof. In the method, isobutanol and acetylene which are taken as raw materials are etherified in a kettle type reactor to synthesize the isobutyl vinyl ether with the existence of a catalyst and an additive, wherein the temperature of the etherification is 120-200 DEG C, the reaction pressure is 0.4-0.8 Mpa; a reaction product is distilled from the reactor after reaction; and the product is refined to obtain an isobutyl vinyl ether product with the purity of above 99 percent, and the catalyst and the additive in the reactor can be continuously reused. The conversion rate of the isobutanol and the acetylene can achieve above 90 percent, the yield of synthesis reaction is above 95 percent, and the synthesis reaction adopts a closed reactor without tail gas exhausted basically.

Description

Technical field [0001] The invention relates to a synthesis process of vinyl ether compounds, in particular to a synthesis method and device of isobutyl vinyl ether. Background technique [0002] Isobutyl vinyl ether is the main raw material for polymerizing vinyl chloride-isobutyl vinyl ether resin. Vinyl chloride-isobutyl vinyl ether resin has good water resistance, chemical resistance and light resistance, and is not easy to be oxidized by the atmosphere. Various metal and plastic substrates have excellent adhesion, have the same properties as other chlorine-containing polymer anticorrosive coatings, and have good solubility. They can be used to replace the application of chlorinated rubber in anticorrosive coatings, and can also be used for inks, In adhesives and other fields, its application prospects are promising. [0003] At present, the synthetic method of isobutyl vinyl ether in China usually adopts the same or reverse contact of isobutanol and acetylene to synthesize i...

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Problems solved by technology

[0003] At present, the synthetic method of domestic isobutyl vinyl ether usually adopts that in a pressure tower reactor, isobutanol and acetylene are contacted in the same direction or reversely to carry out etherification reaction and continuously synthesize isobutyl vinyl ether (CN02138285.9 , CN 1709847A), the manufacturing cost of this type of synthesis method reactor is high, the reaction conditions are harsh, there is certain danger, the safety reliability is relatively poor, the single-pass conversion rate of acetylene and the synthesis reaction yield are low, and the reaction product isobutyl vinyl ether The purity of the product is low, the tail gas emission is large and the content of acetylene is high, and it is difficult to refine the reaction product and recycle the acetylene

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