A method for producing furfural by catalyzing xylose extraction with glacial acetic acid under normal pressure

An acetic acid catalyzed xylose extraction technology, which is applied in organic chemistry and other fields, can solve problems such as potential safety hazards, decreased solubility and extraction speed, and reduced furfural yield, so as to ensure smooth production, save production procedures, and reduce side reactions.
CN110003149BActive Publication Date: 2020-08-28山东乔克环境科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
山东乔克环境科技有限公司
Publication Date
2020-08-28
Patent Text Reader

Abstract

The invention discloses a method for extraction production of furfural by adopting glacial acetic acid to catalyze xylose under normal pressure. The method comprises following steps: 1), acetic acid,ferric chloride and dimethyl phthalate are added to a xylose solution, concentration of acetic acid is enabled to be 3%-6% by mass, v / v, and concentration of ferric chloride is enabled to be 5%-10% bymass; adding volume of dimethyl phthalate is 50%-70% of total volume of a mixed solution; a reaction system is continuously stirred in a reaction process; 2), after the reaction is finished, the mixed solution is left to stand for a set period of time, the reaction system is enabled to stand for layering, and a lower extraction phase is conveyed to a distillation column to separate crude furfuraland dimethyl phthalate; 3), dimethyl phthalate obtained after separation is circulated to the step 2) and used as an extraction agent for furfural, crude furfural obtained after separation is distilled, and refined furfural is obtained.
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Description

technical field

[0001] The invention belongs to the technical field of furfural preparation, in particular to a method for producing furfural by catalyzing xylose extraction with glacial acetic acid under normal pressure. Background technique

[0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art.

[0003] Furfural, also known as furan formaldehyde, has functional groups such as aldehyde groups, dienes, and cyclic ethers in the molecular structure of furfural, so it has the properties of aldehydes, ethers, dienes, and aromatic compounds, and its unique chemical structure can be oxidized and hydrogenated , condensation and other reactions are widely used in many production fields such as medicine, petrochemica...

Claims

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