Microchannel reactor for 2-cyanopyrazine preparation

A technology of microchannel reactor and cyanopyrazine, which is applied in chemical/physical/physical chemical reactors, chemical instruments and methods, chemical/physical/physical chemical processes, etc., can solve the problem of low safety and inability to realize mass production and other issues, to achieve the effect of high safety, favorable catalysis, rapid heat

Inactive Publication Date: 2018-10-26
SOUTHWEST UNIVERSITY FOR NATIONALITIES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional gas-solid reactors cannot achieve mass production and have low

Method used

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  • Microchannel reactor for 2-cyanopyrazine preparation
  • Microchannel reactor for 2-cyanopyrazine preparation

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Such as figure 1 , figure 2 As shown, the present invention includes a stacked microchannel plate 1 and a sealing plate 2. The side of the microchannel plate 1 close to the sealing plate 2 is provided with an etching groove 11. After the etching groove 11 is bonded to the sealing plate 2 A microchannel is formed, and the inlet end of the etching groove 11 is provided with a gasification groove 12, and the gasification groove 12 is respectively provided with a liquid inlet 13 and a gas inlet 14 to communicate with the outside world. During production, the length and cross-sectional area of ​​the etching tank 11 can be designed according to the gas flow rate, the time required for the reaction, etc. The gasification tank 12 is a tank-shaped structure with a slightly larger area, which is mainly used for pre-mixing of gas-liquid two-phase , and its size is also ...

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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...

Claims

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Application Information

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IPC IPC(8): B01J19/00C07D241/24
CPCB01J19/0093B01J2219/00783B01J2219/00858C07D241/24Y02P20/141
Inventor 陈晓阮达蒲亚东地力亚尔·哈米提潘美英赵志刚
Owner SOUTHWEST UNIVERSITY FOR NATIONALITIES
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