Concentrating and tar removing method of biomass gasification liquid (bamboo vinegar)

Abstract

The invention discloses a concentrating and tar removing method of biomass gasification liquid (bamboo vinegar) and belongs to the field of natural product deep processing. The bamboo vinegar contains a certain amount of tar which generates an odorous smoked smell and is low in activity and high in packaging and transportation cost due to low effective component content, so that the bamboo vinegar cannot become large-tonnage consumer goods. In order to solve the marketization difficulty above with a technical manner, the concentrating and tar removing method includes: using neutralizing reaction, first distillation, acidizing reaction and second distillation to perform concentration and tar removing on the bamboo vinegar; using washing and filtering and third distillation to separate the bamboo vinegar. The concentrating and tar removing method has the advantages that the organic acid content of the bamboo vinegar is increased to above 95%, the tar removing rate is above 95%, and the concentrating times can be the optional one of 1-95 times.

Description

technical field [0001] The invention relates to a processing method for concentrating and removing tar from bamboo vinegar, which is used for refining bamboo vinegar and belongs to the field of natural product processing, in particular to a processing method for concentrating and removing tar. Background technique [0002] Biomass gasification liquid is a brown liquid substance that is condensed at room temperature from the gas collected after pyrolysis of plant materials and their processing residues. At present, there are mainly bamboo vinegar, wood vinegar and grass vinegar. "Biomass gasification liquid (bamboo vinegar liquid)" in the present invention is defined as bamboo vinegar liquid (a by-product obtained by pyrolysis of bamboo processing residues). At present, in the process of processing bamboo into corresponding bamboo charcoal, due to the high-efficiency production of modern machines, the by-product produced in the production process, a biomass gasification liqui...

AI Technical Summary

Problems solved by technology

[0005] Bamboo vinegar contains a certain amount of tar, which forms a serious smoky taste, which makes most people feel disgusted. Therefore, all kinds of sanitary products used in people's living environment are generally disgusted by the smoky taste and affect product promotion;

[0006] The content of active ingredients in bamboo vinegar is too low, for example, the content of natural organic acids is generally no more than 10%, and the content of 10-30% is generally required for herbicides, so bamboo vinegar can not be used directly for herbicides because of insufficient content. kills weeds, making weed control less effective;

[0007] The low content of active ingredients in bamboo vinegar directly affects the packaging cost of the product. Generally, the packaging cost per ton is more than 1,000 yuan, and the average logistics cost is also close to 1,000 yuan. The cost of such packaging and logistics is far higher than the value of bamboo vinegar itself. Higher than the acceptable price in the market, thus causing bamboo vinegar to be unable to form a marketable product

[0008] In short, because bamboo vinegar contains a certain amount of tar, which produces an unpleasant smoky taste, and the content of active ingredients is too low, resulting in low activity and high packaging and transportation costs, bamboo vinegar cannot be used as a large-tonnage consumer product.

Images