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Method for enriching acid substances and phenolic substances in wood vinegar

A technology of phenolic substances and wood vinegar, applied in the manufacture of pyroligneous acid, chemical instruments and methods, separation methods, etc., can solve the problems of weak enrichment effect and poor refining effect, and achieve good promotion potential and operation technology Simple, the effect of improving the effect of directional refining

Inactive Publication Date: 2018-08-24
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of weak enrichment effect and poor refining effect in the prior art, and provide a method for enriching acidic substances and phenolic substances in wood vinegar, with simple process, mild, green, Effective enrichment of acids and phenols in wood vinegar

Method used

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  • Method for enriching acid substances and phenolic substances in wood vinegar
  • Method for enriching acid substances and phenolic substances in wood vinegar
  • Method for enriching acid substances and phenolic substances in wood vinegar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Stand the crude wood vinegar at room temperature for later use; accurately measure 10ml of crude wood vinegar, extract the crude wood vinegar 6 times with 3ml of ether-methanol mixed extractant with a volume ratio of 1:1, and combine the obtained 6 times The extract was obtained to obtain refined wood vinegar, and the components of the refined wood vinegar were analyzed by GC-MS. The analysis results show that the content of acidic substances can reach 19.56%, and the content of phenolic substances can reach 57.39%. Among them, the main components of acid substances are acetic acid and propionic acid, and the main components of phenolic substances are phenol, 2-methylphenol, 4-methylphenol, 2-methoxyphenol, 4-ethylphenol, 2-methoxy -4-ethylphenol, 2,4-dimethylphenol, etc.

Embodiment 2

[0016] Put the crude wood vinegar at room temperature and set it aside; accurately measure 10ml of crude wood vinegar, extract the crude wood vinegar 6 times with 2ml of ether-methanol mixed extractant with a volume ratio of 1:1, and combine the obtained 6 times The extract was obtained to obtain refined wood vinegar, and the components of the refined wood vinegar were analyzed by GC-MS. The analysis results show that the content of acidic substances can reach 17.34%, and the content of phenolic substances can reach 56.26%. Among them, the main components of acid substances are acetic acid and propionic acid, and the main components of phenolic substances are phenol, 2-methylphenol, 4-methylphenol, 2-methoxyphenol, 4-ethylphenol, 2-methoxy -4-ethylphenol, 2,4-dimethylphenol, etc.

Embodiment 3

[0018] Stand the crude wood vinegar at room temperature for later use; accurately measure 10ml of crude wood vinegar, extract the crude wood vinegar 6 times with 4ml of ether-methanol mixed extractant with a volume ratio of 1:1, and combine the obtained 6 times The extract was obtained to obtain refined wood vinegar, and the components of the refined wood vinegar were analyzed by GC-MS. The analysis results show that the content of acidic substances can reach 19.79%, and the content of phenolic substances can reach 57.06%. Among them, the main components of acid substances are acetic acid and propionic acid, and the main components of phenolic substances are phenol, 2-methylphenol, 4-methylphenol, 2-methoxyphenol, 4-ethylphenol, 2-methoxy -4-ethylphenol, 2,4-dimethylphenol, etc.

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Abstract

The invention discloses a method for enriching acid substances and phenolic substances in wood vinegar. Crude wood vinegar is extracted by using an extractant to obtain refined wood vinegar; the extractant is a mixed extractant formed by mixing diethyl ether and methanol; the diethyl ether and the methanol are mixed according to a volume ratio of 1-5 to 1; the contents of the acid substances and the phenolic substances in the refined wood vinegar can reach 26.91% and 63.18%; during extraction, the mixed extractant is used for multiple extractions, then extracts are mixed, and the mixed extractis volatilized by standing at a room temperature to obtain the refined wood vinegar. The mixed extractant of the diethyl ether and the methanol is selected for use, and through the adjustment of a mixing ratio of the two and full use of strong polarity and co-solubilization of the methanol and the diethyl ether, the acid substances and the phenolic substances in the wood vinegar are effectively enriched; the contents of the acid substances and the phenolic substances can reach 26.91% and 63.18%, so that the directional refining effect of the wood vinegar is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of biomass energy, and mainly relates to a method for enriching acidic substances and phenolic substances in wood vinegar. Background technique [0002] my country is a large agricultural country, and at the same time, it is also rich in forestry resources, so the reserves of biomass resources that can be used are very considerable. The effective and comprehensive utilization of biomass resources can not only turn waste into treasure, but also help reduce waste pollution, which is in line with my country's development strategy. According to statistics, my country produces hundreds of millions of tons of agricultural and forestry wastes every year, of which about 50% are utilized through thermochemical conversion. Wood vinegar is a main product in the process of biomass thermochemical conversion and utilization, with a huge output. The collection of wood vinegar originated from the dry distillation of wood ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04C10C5/00
CPCB01D11/0492C10C5/00Y02E50/10
Inventor 卢辛成蒋剑春孙康孙云娟王傲陈超
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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