Dry carding and grading method and equipment for biomass long and short fibers

Abstract

As for the problems that the fibrocyte and heter-cell tissue utilization in a biomass raw material has mutual influence and mutual restriction, and the traditional fiber grading method generates a great amount of sewage and is not suitable for industrialized utilization, the invention provides dry carding and grading method and equipment for long and short fibers of biomass raw materials. The method comprises the following steps of: classifying the raw materials; selecting the steam explosion condition for carrying out steam explosion treatment according to different raw materials; and charging the materials obtained after steam explosion treatment into fiber carding and grading equipment for grading to respectively obtain fiber bundle tissue and heter-cells. The steam explosion is coupled with mechanical carding and tissue grading; the carded and graded long fiber can be used for a high-quality fiber raw material of the industrial applications such as papermaking, spinning and the like; the fine fiber formed by parenchyma cells and the like can be used for producing biofertilizer and feed protein or producing a series of biochemical products, such as ethanol, butanol, 2,3-butanediol, xanthan gum and the like through enzymatic zymotechnics, and thereby the component grading separation, cleaning and high-value utilization of the biomass long and short fibers can be realized.

Description

technical field [0001] The invention belongs to the application field of biomass resources, and particularly relates to a method and equipment for dry carding and classifying biomass long and short fibers. Background technique [0002] Biomass raw materials come from a wide range of sources, and the fiber-rich biomass raw materials are mainly plant fiber raw materials. There are many kinds of plant fiber raw materials, which are generally divided into the following categories according to the morphological characteristics, sources and habits of the raw materials in my country (Table 1): [0003] Table 1 Classification of plant fiber raw materials [edited by Yang Shuhui, Plant Fiber Chemistry, China Light Industry Press, 2001] [0004] [0005] Cells that make up plant fiber raw materials can be divided into two categories, fibrous cells and non-fibrous cells (heterocells). Most non-fibrous cells belong to parenchyma cells, such as vessels in hardwood and grasses; wood r...

AI Technical Summary

Problems solved by technology

[0019] The purpose of the present invention is to provide a method and equipment for dry carding and grading of biomass long and short fibers, aiming at mutual influence and mutual restriction in the utilization of fiber cells and miscellaneous cell tissues (including fine fibers) in plant fiber raw materials, while the existing The fiber grading method produced a large amount of sewage, which is not suitable for industrial production and utilization. A method and equipment for dry carding and grading of long and short fibers of biomass raw materials were invented. The combination of steam explosion pretreatment and mechanical carding tissue grading was used to separate and obtain high-quality Fibrous tissue, miscellaneous tissue (fine fibrous tissue)

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