Microchannel reactor for 2-cyanopyrazine preparation

Abstract

The invention discloses a microchannel reactor for 2-cyanopyrazine preparation. The microchannel reactor comprises a microchannel plate and a seal plate, the microchannel plate and the seal plate areoverlapped, and one surface, close to the seal plate, of the microchannel plate is provided with an etching groove. The etching groove fits the seal plate to form a microchannel, an inlet end of the etching groove is provided with a gasification groove, and the gasification groove are provided with a liquid inlet and a gas inlet to communicate with the outside. The microchannel reactor has advantages that the microchannel is formed by the seal plate and the microchannel plate with the etching groove, the inlet of the microchannel is provided with the gasification groove for mixing reaction materials, the middle of a reaction channel is filled with a catalyst, and reaction material gas and the catalyst are subjected to gas-solid reaction to synthesize a product; since the microchannel is small in flow through area but large in surface area, long-time mixing reaction of materials can be realized only through a small device while quick heat conduction can be realized, high safety is realized, catalysis is benefited, and accordingly reaction efficiency can be improved.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a microchannel reactor for preparing 2-cyanopyrazine. Background technique [0002] The key to the gas-solid two-phase reaction is the full mixing of the gas and the solid catalyst. At present, a cylindrical reactor with a stirrer or a device capable of spraying powdery materials are generally used, such as CN2659539Y, CN2810740Y, CN201046396Y, etc., among these patents The disclosed reactors all use agitators in the reactor or a draft tube and a propeller in the draft tube to mix the materials. The structure of this type of reactor depends on the agitator or propeller to make the reactants flow. Complex, and the sealing effect of these reactors is generally poor. There are also some reactors that use gas mixed flow to realize gas-solid mixing, such as CN101829534B. This reactor uses the principle of full mixed flow to set it into a special shape structure. Compared with the sti...

AI Technical Summary

Problems solved by technology

Traditional gas-solid reactors cannot achieve mass production and have low safety, which can no longer meet the needs of modern industrial development

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