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Paper prepared from forestry and agricultural waste and method thereof

A technology for agricultural and forestry waste and paper, which is applied in the field of pulping and papermaking, can solve the problems of low kappa value, high whiteness, and low pulping yield, and achieves low kappa value, high whiteness and high fiber yield. Effect

Inactive Publication Date: 2018-06-08
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method can not only solve the problem of low pulping yield, but also effectively improve the whiteness of pulp, and the prepared fiber product has good hygienic properties, high whiteness, and low kappa value

Method used

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  • Paper prepared from forestry and agricultural waste and method thereof
  • Paper prepared from forestry and agricultural waste and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a method for preparing paper from agricultural and forestry waste, and the specific operation steps are as follows:

[0031] S1. Deslagging the agricultural and forestry wastes, removing the silt and dust therein, drying until the water content is 20%, carrying out the screw extrusion processing on the above agricultural and forestry wastes, and then standby; the compression ratio of the screw extrusion processing is 1:1;

[0032] S2. Place the agricultural and forestry waste in step S1 in an ultrasonic reactor, the ultrasonic power is 1200W, the frequency is 30KHz, add catalase, xylanase and water, the amount of catalase is 2 kg / ton of material, wood The amount of glycanase is 4 kg / ton of material, the mass ratio of water to agricultural and forestry waste is 15:2, fully mixed, and fermented, the fermentation time is 2 hours, the temperature is 80°C, and after the fermentation is completed, filter to obtain filtrate and filtrate ;

[0033] S3...

Embodiment 2

[0038] This embodiment provides a method for preparing paper from agricultural and forestry waste, and the specific operation steps are as follows:

[0039] S1. The agricultural and forestry wastes are subjected to deslagging treatment, after removing the silt and dust therein, and dried until the water content is 30%, and the above-mentioned agricultural and forestry wastes are subjected to screw extrusion processing, and then set aside; the compression ratio of the screw extrusion processing is 2:1;

[0040] S2. Place the agricultural and forestry waste in step S1 in an ultrasonic reactor, the ultrasonic power is 1600W, the frequency is 20KHz, add catalase, xylanase and water, the amount of catalase is 4 kg / ton of material, wood The amount of glycanase is 6 kg / ton of material, the mass ratio of water to agricultural and forestry waste is 15:4, fully mixed, and fermented, the fermentation time is 4 hours, the temperature is 70°C, and after the fermentation is completed, filte...

Embodiment 3

[0046] This embodiment provides a method for preparing paper from agricultural and forestry waste, and the specific operation steps are as follows:

[0047] S1. The agricultural and forestry wastes are subjected to deslagging treatment, after removing the silt and dust therein, and dried until the water content is 25%, and the above-mentioned agricultural and forestry wastes are subjected to screw extrusion processing, and then set aside; the compression ratio of the screw extrusion processing is 1.5:1;

[0048] S2. Place the agricultural and forestry waste in step S1 in an ultrasonic reactor, the ultrasonic power is 1300W, the frequency is 25KHz, add catalase, xylanase and water, the amount of catalase is 3 kg / ton of material, wood The amount of glycanase is 5 kg / ton of material, the mass ratio of water to agricultural and forestry waste is 15:3, fully mixed, and then fermented. The fermentation time is 3 hours, the temperature is 75°C, and after the fermentation is completed...

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Abstract

The invention relates to paper prepared from forestry and agricultural waste and a method thereof, and discloses a technology for preparing fiber through the forestry and agricultural waste. The technology comprises the steps of spiral squeezing processing, biological enzyme fermenting, papermaking, paper modifying and the like. The forestry and agricultural waste serves as raw materials for preparing fiber, then through the cooperation of ultrasonic waves and biological enzymes, the prepared fiber has high yield, high whiteness and a low kappa number, in the whole process, no harmful chemicalproducts are introduced, and the hygiene of the fiber is ensured. Since graphene dispersion liquid is added in the pulping process, the obtained product has high electric conduction and antibacterialperformance, and particularly has an effect of effectively inhibiting and killing staphylococcus aureus, escherichia coli and hemolytic streptococcus.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, and in particular relates to paper prepared from agricultural and forestry wastes and a method thereof. Background technique [0002] Graphene is a new type of two-dimensional ultra-thin nanomaterial, because of its unique structure, mechanical and electronic properties, it has broad application prospects in the field of bio-nanotechnology such as drug delivery and tumor treatment. Studies have shown that graphene can not only cut the bacterial cell membrane, but also induce the detachment of phospholipid molecules on the bacterial cell membrane, so as to realize the large-scale direct extraction of phospholipid molecules on the cell membrane by graphene. The physical action of cutting and extracting can cause the bacterial cell membrane to lose its integrity and the intracellular material to flow out, thereby achieving the effect of killing the bacteria. At the same time, graphe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/30D21C5/00D21H21/16D21H17/67D21H17/00D21C9/00D21H17/37D21H19/14D21H11/12
CPCD21B1/303D21C5/005D21C9/004D21H11/12D21H17/00D21H17/37D21H17/675D21H19/14D21H21/16
Inventor 李红胡黄卿
Owner HUNAN UNIV OF TECH
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