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An integrated process for refining and separating crude wood vinegar

A technology of crude wood vinegar and wood vinegar, which is applied in the field of material-liquid separation, can solve problems such as complex components, and achieve the effect of convenient operation and small footprint

Inactive Publication Date: 2017-01-04
蓝星工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Contains a large amount of tar and harmful substances;
[0005] (2) The composition is complex, containing various organic compounds such as organic acids, aldehydes, ketones, alcohols, phenols and their derivatives, among which acids are the main components;

Method used

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  • An integrated process for refining and separating crude wood vinegar
  • An integrated process for refining and separating crude wood vinegar
  • An integrated process for refining and separating crude wood vinegar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. The crude wood vinegar stock solution discharged in the production process of a certain factory's fruit wood carbonization workshop is used as the raw water of this embodiment example.

[0029] 2. Put the crude wood vinegar in the conditioning tank for about three months to form layers and remove a large amount of wood tar.

[0030] 3. The clarified wood vinegar after standing still uses a pump to lift the waste water from the adjustment tank to the oil-absorbing filter bag filter device, and removes suspended solids, part of wood tar and other oily substances in the wood vinegar through the oil-absorbing filter bag, and filters Afterwards, its property analysis is shown in Table 1;

[0031] Table 1 Analysis of properties of crude wood vinegar after preliminary filtration

[0032]

[0033] 4. Afterwards, the wood vinegar enters the nanofiltration membrane system after passing through the raw material pump and the high-pressure pump, and the dope of the nanofiltra...

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PUM

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Abstract

The invention relates to an integrated crude wood vinegar refining process, in particular to an integrated process for refining and separating crude wood vinegar. The process mainly comprises the three steps of before-membrane pretreatment, nanofiltration membrane treatment and MVR. According to the process, suspended matters and the like in wood vinegar can be effectively removed by combining simple pretreatment and nanofiltration, dark organic matters are finally removed from the wood vinegar, and the filtered wood vinegar can be used for producing a required product by other treatment methods; a concentrated solution of a nanofiltration membrane can be concentrated by an MVR evaporator to obtain wood tar for other uses.

Description

technical field [0001] The invention belongs to the field of material-liquid separation, and in particular relates to an integrated process for refining and separating crude wood vinegar, in particular to a process for refining crude wood vinegar by combining simple pretreatment with membrane method and MVR technology. Background technique [0002] Wood vinegar is a by-product of the carbonization process of wood, sawdust, rice husk, straw, chestnut shell, etc. It is a liquid product obtained by condensing the gas mixture after dry distillation and pyrolysis. As a natural green product, wood vinegar does not pollute the environment and is non-toxic to humans and animals. With the enhancement of people's awareness of environmental protection, the development and research of wood vinegar has gradually deepened and been paid attention to. Generally, the liquid product of direct cold energy is called crude wood vinegar, and the wood vinegar separated and purified by different me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C5/00C10C1/00
CPCC10C1/00C10C5/00Y02E50/10
Inventor 郑东晟潘洋吉春红崔彦杰罗涛高磊李星
Owner 蓝星工程有限公司