Clean pulping of rhus chinensis twigs and comprehensive utilization method thereof

A clean pulping and salt-skinned wood technology, applied in textiles and papermaking, papermaking, fiberboard, etc., can solve problems such as waste, achieve the effects of reducing production costs, reducing pollution, and broad economic prospects

Inactive Publication Date: 2012-09-26
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] During the planting process, the branches need to be pruned, resulting in a large number of discarded branches. The pruning is nearly 1 ton per mu of land per year. If these resources are not utilized, it will cause a lot of waste

Method used

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  • Clean pulping of rhus chinensis twigs and comprehensive utilization method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Steam explosion: peel the collected twigs of Saltina twigs under the condition that the solid-to-liquid mass ratio is 1:3, and the treatment time is 30 minutes, then peel off the skins, separate the skins and rods, and then put the skins under a pressure of 0.8 MPa Maintain pressure for 5 minutes for steam explosion treatment;

[0027] (2) Extraction of functional components: wash the steam explosion material with water, combine the boiling liquid and the steam explosion washing liquid, and make a solution with a concentration of about 6%, slowly flow into the macroporous adsorption resin, wash with 2 times distilled water after loading Then eluted with 3 times of 40% ethanol, collected the eluate, concentrated at normal pressure, then concentrated under reduced pressure to distill off the solvent, and dried in vacuum below 80°C to obtain crude tannin compound;

[0028] (3) Beating: fly knife rotor 2000 rpm, pulp tank 2000 rpm, beating 30s;

[0029] (4) Bleaching: ...

Embodiment 2

[0034] Embodiment 2: (1) steam explosion: peel the bark after boiling the collected twigs, then carry out steam explosion treatment to the bark under 1.0Mpa pressure for 5min;

[0035] (2) Extraction of functional components: Wash the raw materials after steam explosion, recover the functional components adsorbed on the surface of the fiber, combine the boiling liquid and steam explosion washing liquid, and make a solution with a concentration of about 6%, and slowly flow into the large Pore ​​adsorption resin, elute with 2 times of distilled water after loading on the column, and then elute with about 3 times of 70% ethanol, collect the eluate, first atmospheric pressure and then vacuum concentration, evaporate the solvent, and vacuum dry below 80 °C , to obtain crude flavonoids;

[0036] (3) Beating: fly knife rotor 1400 rpm, pulp tank 1400 rpm, beating 60s;

[0037] (4) Steam explosion salt skin veneer bleaching: using two-stage bleaching technology, the composition of the...

Embodiment 3

[0042] Embodiment 3: (1) steam blasting: peeling after the poaching of the collected chrysanthemum branches, and then carrying out the steam explosion treatment to the chrysanthemum bark under the pressure of 1.2Mpa for 3min;

[0043] (2) Extraction of functional components: Recover the steam explosion residual liquid produced after steam explosion treatment, and at the same time wash the raw materials after steam explosion to recover the functional components adsorbed on the fiber surface, combine the steam explosion residual liquid and washing liquid, and prepare Make a solution with a concentration of about 6%, slowly flow into the macroporous adsorption resin, elute with 2 times of distilled water after loading, and then elute with about 3 times of 40% solvent, collect the eluent, first at normal pressure and then under reduced pressure After concentrating and evaporating the solvent, vacuum-dry below 80°C to obtain crude tannin.

[0044] (3) Beating: 1000 rpm of the flyin...

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Abstract

The invention belongs to the field of the utilization of bast fiber and particularly relates to a new pulping raw material of rhus chinensis twig, a steam-explosion pulping process and a comprehensive utilization method thereof. The process comprises the steps of: poaching and separating to obtain barks and trunks; carrying out steam explosion on the barks; washing and then carrying out beating, bleaching and papermaking on the fiber raw materials; measuring the strength of the paper after carrying out the papermaking, wherein the strength of the obtained paper is superior to that of corrugated paper; separating and purifying the washing liquid to respectively obtain flavones and tannin substances; and finally clamping or briquetting the trunks. As the rhus chinensis twigs are used for pulping and papermaking via steam explosion, the industrial cost is reduced, cleanliness and environment protection are ensured, and functional components can be extracted; and the comprehensive utilization of the rhus chinensis twigs are realized by clamping and briquetting the trunks. Through the process, a new raw material is found for the field of papermaking, a new approach to the high-value utilization of the rhus chinensis is created and a new thought is provided to the comprehensive utilization of the rhus chinensis resources.

Description

technical field [0001] The invention belongs to the field of bast fiber utilization, and in particular relates to a new raw material for pulping and papermaking, the twigs of syringa, a steam explosion pulping process and the utilization of its rods, and a method for extracting functional components. Background technique [0002] Since 1990, China has accounted for more than 50% of the world's total growth in paper and cardboard production, and now it has become the second largest producer in the world after the United States. In 2007, the world's paper output was 395 million tons, of which the United States had the highest output, followed by China, followed by Japan and Germany. By 2010, China's total demand for paper products will grow from 48 million tons in 2003 to an annual average of 68.5 million tons. At that time, China's domestic production is expected to reach 62.4 million tons, and then become the leading force in the growth of the production of most major types...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21J1/00D21J3/12
Inventor 陈洪章张思婧陈国忠
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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