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Method for solving problem of shortage of raw materials in papermaking industry by using non-wood fiber resources

A non-wood fiber and paper-making industry technology, applied in the field of non-wood fiber enzymatic pulping, can solve the problems of dependence on imports, shortage of raw materials in the paper industry, shortage of fiber raw materials in the paper industry, etc., achieve high production speed and improve cookability , Improve whiteness, purity and stability

Pending Publication Date: 2021-11-23
SHAANXI UNIV OF SCI & TECH
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  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method of using non-wood fiber resources to solve the shortage of raw materials in the papermaking industry, which solves the problem in the prior art that there is a huge demand for papermaking raw materials in the domestic market, but long-term dependence on imports, and a serious shortage of fiber raw materials in the papermaking industry. question

Method used

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  • Method for solving problem of shortage of raw materials in papermaking industry by using non-wood fiber resources

Examples

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Effect test

Embodiment 1

[0040] The present invention uses non-wood fiber resources to solve the method for the shortage of raw materials in the papermaking industry. The flow chart is as follows figure 1 As shown, the specific steps are as follows:

[0041] Step 1. Roughly grind and separate the raw materials, and obtain short filament fibers with a length of 30 mm and a diameter of 0.05 mm after screening, dust removal, and crushing; in step 1, use a rubbing and separating machine for rough grinding of raw materials; in step 1, heat The temperature during cooking is 150° C., and the cooking time is 20 minutes.

[0042] Step 2, immerse the short silk fibers obtained in the step 1 in water containing chemical additives to dissolve plant ash, pigments, etc. After dipping, the short silk fibers are dispersed in water containing chemical additives to form a suspension, and then The water in the suspension is filtered out, and the deposited fibers form a fiber web, and then carry out enzyme pretreatment;...

Embodiment 2

[0051] The present invention uses non-wood fiber resources to solve the method for the shortage of raw materials in the papermaking industry. The flow chart is as follows figure 1 As shown, the specific steps are as follows:

[0052] Step 1. Roughly grind and separate the raw materials, and obtain short fibers with a length of 10 to 30 mm and a diameter of 0.5 mm after screening, dedusting, and crushing; in step 1, a grinding and separating machine is used for rough grinding of raw materials; in step 1 When heating and cooking, the temperature is 100°C, and the cooking time is 60min.

[0053] Step 2, immerse the short silk fibers obtained in the step 1 in water containing chemical additives to dissolve plant ash, pigments, etc. After dipping, the short silk fibers are dispersed in water containing chemical additives to form a suspension, and then The water in the suspension is filtered out, and the deposited fibers form a fiber web, and then carry out enzyme pretreatment; in ...

Embodiment 3

[0062] The present invention uses non-wood fiber resources to solve the method for the shortage of raw materials in the papermaking industry. The flow chart is as follows figure 1 As shown, the specific steps are as follows:

[0063] Step 1. Roughly grind and separate the raw materials, and obtain short filament fibers with a length of 20 mm and a diameter of 0.3 mm after screening, dust removal, and crushing; in step 1, use a rubbing and separating machine for rough grinding of raw materials; in step 1, heat The temperature during cooking is 120°C, and the cooking time is 40min.

[0064] Step 2, immerse the short silk fibers obtained in the step 1 in water containing chemical additives to dissolve plant ash, pigments, etc. After dipping, the short silk fibers are dispersed in water containing chemical additives to form a suspension, and then The water in the suspension is filtered out, and the deposited fibers form a fiber web, and then carry out enzyme pretreatment; in step...

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Abstract

The invention discloses a method for solving the problem of shortage of raw materials in the papermaking industry by using non-wood fiber resources. The method comprises the following steps: firstly, coarsely grinding and dividing the raw materials, then soaking the raw materials in water containing a chemical additive, filtering, and carrying out enzyme pretreatment; fully mixing a mixture of slurry and a crude enzyme solution and water according to a ratio of 1: 7 for reaction, adjusting the pH value of the reaction system by using an acetate buffer solution, and carrying out hot dipping on the product in an aqueous solution containing the following substances according to the weight of the aqueous solution: 1-2% of H2O2, 3-7% of NaOH and 0.4-1% of EDTA as additives, and the weight ratio of water to the raw materials is (9-14): 1; and squeezing, grinding and bleaching to obtain the enzymatic chemimechanical pulp of which the whiteness is 78% or above and the splitting length is 5200 M or above. The problems that in the prior art, the domestic market papermaking raw material demand is huge, but depends on import for a long time, and fiber raw materials in the papermaking industry are seriously in shortage are solved.

Description

technical field [0001] The invention belongs to the technical field of non-wood fiber enzymatic pulping, and in particular relates to a method for solving the shortage of raw materials in the papermaking industry by utilizing non-wood fiber resources. Background technique [0002] Papermaking is the third largest industry after telecommunications and steel, and is one of the important symbols of the country's economic development level. At present, the paper industry has gradually become one of the important industries in our country. However, raw materials are still the biggest bottleneck restricting the development of my country's paper industry. Due to my country's strong demand for waste paper imports in recent years, the price of waste paper in the international market has continued to rise. The paper industry has been deeply affected by the rapid increase in waste paper import prices. . At present, in my country's papermaking raw materials, waste paper accounts for as...

Claims

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Application Information

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IPC IPC(8): D21H11/12D21B1/06D21C3/22D21C5/00D21D1/34D21C9/10D21C9/16
CPCD21H11/12D21B1/06D21C3/222D21C5/005D21D1/34D21C9/10D21C9/163
Inventor 栾飞肖娅赵卓欣
Owner SHAANXI UNIV OF SCI & TECH
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