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Adhesive and fiber board preparation method

An adhesive and cellulose technology, applied in the directions of adhesives, adhesive additives, cellulose adhesives, etc., can solve the problems such as the inability to increase the output value of the chemical pulp waste liquid, unfavorable sustainable development, and inability to increase the output value, etc. To achieve sustainable development, increase output value, and good economic effects

Inactive Publication Date: 2019-03-26
丰禾新材(北京)技术有限公司
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AI Technical Summary

Problems solved by technology

[0003] Chemi-mechanical pulp is the most widely used pulp in my country. A large amount of chemical-mechanical pulp waste liquid will be generated in the papermaking process. Generally speaking, we will choose the method of direct discharge for the treatment of chemical-mechanical pulp waste liquid instead of recycling. , direct discharge of chemical-mechanical pulp waste liquid will cause environmental pollution, and if the chemical-mechanical pulp waste liquid cannot be recycled, the output value cannot be increased, which is not conducive to sustainable development
[0004] For the above-mentioned problems in the prior art that the treatment of chemical pulp waste liquid will cause environmental pollution, cannot increase the output value, and is not conducive to sustainable development, no effective solution has been proposed yet

Method used

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  • Adhesive and fiber board preparation method
  • Adhesive and fiber board preparation method
  • Adhesive and fiber board preparation method

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Embodiment 1

[0031] Embodiment 1 of the present invention provides a kind of adhesive preparation method, see figure 1 The flow chart of a kind of adhesive preparation method shown, comprises the steps:

[0032] Step S102, obtaining 100 parts by weight of pulping waste liquid, and degrading the pulping waste liquid; the pulping waste liquid is chemical mechanical pulp waste liquid, and the solid content of the pulping waste liquid is 2-5%.

[0033] Pulping waste liquid is chemical mechanical pulp waste liquid, chemical mechanical pulping, using chemical pretreatment and mechanical grinding post-treatment pulping method. Light pretreatment (soaking or cooking) is carried out first with chemicals to remove part of the hemicellulose in the wood chips, and the lignin is less or not leached out, but the intercellular layer is softened. Afterwards, it is post-treated by a disc refiner to grind and soften the wood chips (or grass chips) to separate the fibers into pulp. This pulp is chemical mec...

Embodiment 2

[0076] Embodiment 2 of the present invention provides a kind of fiberboard preparation method, see Figure 4 A flow chart of a fiberboard preparation method shown, comprising the steps:

[0077] Step S402, obtaining 1-99% by weight of solid waste, 10-30% of waste paper pulp, 10-50% of poplar fiber, 2-5% of paraffin wax, and 8%-15% of the first aspect and its The adhesive prepared by the adhesive preparation method provided in one of the possible embodiments.

[0078] Solid waste includes bark, sawdust, lime soil, bagasse, grass clippings, pulp residue, a small amount of white mud, pulping sludge (primary sludge, secondary sludge, deinking sludge), etc. Timber refers to forest harvesting residues, such as branches, tips, small diameter timber, etc.; and wood processing residues, such as board edges, shavings, sawdust, etc. Waste paper pulp is not only the raw material for fiberboard, but also forms hydrogen bonds with other raw materials during the forming process of fiberboa...

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Abstract

The invention provides an adhesive and a fiber board preparation method, relating to the technical field of waste liquid treatment. The adhesive is prepared by the following steps: fetching 100 partsof pulping waste liquid, and degrading the pulping waste liquid, wherein the pulping waste liquid is chemical mechanical slurry waste liquid, and the solid content of the pulping waste liquid is 2%-5%; adding 10-40 parts of an oxidized starch solution into the degraded pulping waste liquid while stirring, and heating to 50-90 DEG C; and adding a cross-linking agent while stirring, so as to generate cross-linking reaction; and stirring for 10-100 minutes, so as to obtain the adhesive. The pulping waste liquid is degraded, the oxidized starch solution is added while stirring after the degradation, the mixed solution is heated, the cross-linking agent is added to generate the cross-linking reaction, and then the adhesive can be obtained, so that the environmental pollution is avoided, chemical-mechanical pulp waste liquid is comprehensively utilized, the production value is increased, the economical efficiency is good, and the sustainable development can be realized.

Description

technical field [0001] The invention relates to the technical field of waste liquid treatment, in particular to an adhesive and a fiberboard preparation method. Background technique [0002] The pulp industry is a traditional big polluter. The environmental protection facilities of the pulp industry are not perfect, and the treatment process of wastewater, waste gas and waste residue is relatively backward. The main performance is that the treatment of pulping and papermaking wastewater is difficult and expensive, and some small and medium-sized paper mills' waste liquid wastewater is not completely treated, and it causes environmental pollution after being discharged into natural water bodies. Papermaking waste is basically discharged directly into the external environment without any treatment. The raw materials in the factory area are stacked randomly, the ground is not hardened, and there is no greening. "Dirty, messy, and poor" is a true portrayal of most paper-making ...

Claims

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Application Information

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IPC IPC(8): C09J197/00C09J11/08C09J103/10C09J101/02C09J105/14B27N3/00B27N3/04
CPCB27N3/002B27N3/007B27N3/04C08L2205/035C09J11/08C09J197/005C08L3/10C08L1/02C08L5/14
Inventor 徐明邢立艳
Owner 丰禾新材(北京)技术有限公司
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