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A kind of refining method of wood vinegar and its application

A refining method and technology of wood vinegar liquid, applied in the field of biomass resource utilization, can solve the problems of high cost, poor refining effect, long time consumption, etc., and achieve the effects of short time consumption, simple composition and low refining cost

Active Publication Date: 2019-07-26
BEIJING SANJU GREEN ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of long time consumption, high cost and poor refining effect in the existing wood vinegar refining method, and then provide a fast, low-cost and efficient method for removing wood tar in wood vinegar. Methods

Method used

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  • A kind of refining method of wood vinegar and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The refining method of the wood vinegar provided by the present embodiment may further comprise the steps:

[0024] A demulsifier was prepared, and its raw materials were as follows: 2 g of the acetal product of n-butyraldehyde and propylene glycol, 135 g of glycerol, 6 g of cyclohexane, 0.4 g of polyvinyl alcohol, and 6 g of AE8051 dry agent.

[0025] Among them, AE8051 is a block polymer composed of aliphatic amine, ethylene oxide, and propylene oxide.

[0026] Take 1000kg of crude wood vinegar, add 10g of the demulsifier prepared above into it at room temperature, mix well, let it settle for 30min, remove the obtained oil phase, and obtain refined wood vinegar.

[0027] The refined wood vinegar obtained in the present embodiment is clear and translucent.

Embodiment 2

[0029] The refining method of the wood vinegar provided by the present embodiment may further comprise the steps:

[0030] A demulsifier was prepared, and its raw material composition was: 3.5 g of acetal product of p-hydroxybenzaldehyde and ethylene glycol, 60 g of polyglycerol, 10 g of cyclohexane, 2 g of polyvinyl alcohol, and 4 g of BP2040 dry agent.

[0031] Take crude wood vinegar, add 50ppm of the above-mentioned demulsifier to it at room temperature, stir for 3 minutes, then let it settle for 20 minutes, remove the obtained oil phase, and obtain refined wood vinegar.

Embodiment 3

[0033] The refining method of the wood vinegar provided by the present embodiment may further comprise the steps:

[0034] Take 1000kg of crude wood vinegar, add 100g of demulsifier to it at room temperature, stir for 2 minutes, then let it settle until the phase separation is complete, remove the obtained oil phase, and obtain refined wood vinegar.

[0035] The raw material composition of the demulsifier used in this example is: 3 g of the acetal product of benzaldehyde and ethylene glycol, 83 g of glycerol, 10.4 g of toluene, 3.6 g of polyvinyl alcohol, and 5 g of BP2040 dry agent.

[0036] Get 6kg of refined wood vinegar, 1.5kg of urea, 80g of magnesium sulfate, 0.7kg of diammonium phosphate, 0.7kg of potassium chloride, and 0.8kg of aluminum sulfate obtained in the present embodiment to be mixed with special compound liquid fertilizer for hydrangea.

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Abstract

The invention belongs to the technical field of biomass energy, and particularly provides a refining method of wood vinegar liquid. In the method, crude wood vinegar liquid is treated with a demulsifier, so that micro-drops of wood tar in the wood vinegar liquid are quickly aggregated to form an oil phase, which is further separated from the wood vinegar liquid, thus effectively removing the woodtar in the wood vinegar liquid. Due to the demulsification in the method, the wood tar in the wood vinegar liquid can be removed, wherein treatment cost is low and no energy consumption exists; usageamount of the demulsifier in the method is only 10-100 ppm, wherein the demulsifier can be an acetal-polyol and polyether-type composite demulsifier, multiple selectable components being provided therein.

Description

technical field [0001] The invention belongs to the technical field of utilization of biomass resources, and in particular relates to a method for refining wood vinegar and its application. Background technique [0002] Because wood vinegar contains acetic acid, alcohol, phenol, ketone, aldehyde and other organic substances, it has the functions of killing insects, sterilizing bacteria, and promoting crop growth, so it can be used as pharmaceutical raw materials, food additives, soil improvers, and plant growth promoters Wait. At present, wood vinegar is mainly obtained by condensing or spraying the gas phase products produced by straw carbonization technology. But also contain a small amount of wood tar composition in the wood vinegar that above-mentioned method obtains, it not only makes wood vinegar have serious smoky taste, but also can mix harmful substances such as benzopyrene, has had a strong impact on the promotion of wood vinegar product , so the wood vinegar oft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C5/00C05G3/00C05G3/02C05G3/60
CPCC05B7/00C05G3/00C05G3/60C05G5/20C10C5/00C05C9/00C05D1/02C05D5/00C05D9/00Y02E50/10
Inventor 李泓付兴国田然潘东张少明
Owner BEIJING SANJU GREEN ENERGY TECH CO LTD
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