Purifying process for solution of wood vinegar

Abstract

The invention relates to a method of the purification technology of pyracetic acid. The method is characterized in that the method comprises the following steps: firstly, the stock solution in a stock solution bath is fed into a two stage pre-filtration system and a two stage secondary precision filtration system which are connected in series to be filtered; secondly, the filtered solution obtained in the first step is fed into multistage membrane separating systems which are connected in series at intervals in sequence and are composed of at least three stage membrane separating devices and three water washing boxes to be separated; wherein, the concentrated water separated through the primary stage membrane separating device is respectively fed into the stock solution bath and a concentrated water tank; the concentrated water separated through the secondary stage membrane separating device is fed into the concentrated water tank through a pipeline; the concentrated water separated through the tertiary stage membrane separating device is respectively fed into the first water washing box and the second water washing box through a pipeline; finally the concentrated pyracetic acid with 50 percent of content is obtained in the concentrated water tank, and the separated fresh water is discharged after being metered through the third water washing box.

Description

technical field [0001] The present invention designs chemistry (chemical industry) technology, specifically relates to a kind of purification process method of wood vinegar. Background technique [0002] Wood vinegar is a precious substance extracted from the pyrolysis and carbonization process of natural plants. It contains 200 kinds of organic substances. It is a system substance with complex components, various functions and relatively stable. Due to the natural comprehensive balance mechanism of many trace substance factors in the wood vinegar, it shows incredible performance in practical application. With the in-depth research on wood vinegar at home and abroad, the various properties and functions of wood vinegar have been increasingly recognized and valued, and it has been widely used in agriculture, forestry, animal husbandry, food processing, medical and health industries, and light chemical industries. . In particular, wood vinegar has various effects such as pro...

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Problems solved by technology

[0005] (1) The energy consumption that is used for heating and distilling is bigger, and every ton of wood vinegar (50% of organic matter content) of purifying and concentrating is processed, and cost is 200 yuan

[0006] (2) Part of the organic substances are entrained in the distilled water, which changes the biomass composition of the concentrated wood vinegar, which cannot guarantee the original state of the natural substances, and has adverse effects on the use of downstream products.

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