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A papermaking method for inhibiting plant fiber decay

A plant fiber and fiber decay technology, applied in the field of papermaking, to achieve the effects of good environmental friendliness, simple production process and stable quality

Active Publication Date: 2016-09-14
WUHAN IND TECH RES INST OF GEO RESOURES ENVIRONMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical additives added at the same time will not cause environmental pollution

Method used

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  • A papermaking method for inhibiting plant fiber decay
  • A papermaking method for inhibiting plant fiber decay
  • A papermaking method for inhibiting plant fiber decay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: the present invention provides a kind of papermaking method that suppresses plant fiber decay, as figure 1 shown. Papermaking method of the present invention is specifically operated as follows:

[0035] Step (1), first pulping and refining the wood pulp board to obtain slurry A; the concentration of slurry A is 3.5%, and the wood pulp board adopts bleached chemical wood pulp, wherein the percentage by mass is coniferous wood 50, Hardwood 50.

[0036] Step ⑵, prepare the fiber decay inhibitor suspension in the preparation tank; the fiber decay inhibitor component is Al(OH) 3 and Mg(OH) 2 , by mass percentage, the Al(OH) 3 40, Mg(OH) 2 60, added to water to prepare a suspension with a concentration of 6%.

[0037] Step ⑶, mix and stir the slurry A obtained in step ⑴ after refining treatment and the fiber decay inhibitor suspension prepared in step ⑵ in the mixing tank, and the two materials are: slurry A98, decay inhibitor 2. Mix and stir the above t...

Embodiment 2

[0046] Embodiment 2: the present invention provides a kind of papermaking method that suppresses plant fiber decay, and its operation step is with embodiment 1: different is:

[0047]Step (1) medium wood pulp: adopt bleached chemical wood pulp, wherein coniferous wood: hardwood=60:40. The concentration of slurry A obtained after the pulp board is refined is 3.8%.

[0048] Fiber Decay Inhibitor: Al(OH) 3 :Mg(OH) 2 , the ratio of the two is 60:40, and it is added into water to form a suspension with a concentration of 8%.

[0049] The ratio of stock A and fiber decay inhibitor is 96:4.

[0050] The mixing and stirring speed is 2800r / min, and the stirring time is 40min.

[0051] The slurry C concentration after washing is 0.95%.

[0052] The added amount of CPAM is 0.25% of the absolute dry pulp mass.

[0053] The slurry F concentration was 0.6%.

[0054] In the sizing process, the sizing agent used is surface sizing starch, and the dosage is 2.6g / m 2 .

[0055] The stre...

Embodiment 3

[0058] Embodiment 3: the present invention provides a kind of papermaking method that suppresses plant fiber decay, and its operating steps are the same as embodiment 1: difference is: step (1) middle wood pulp: adopt bleached chemical wood pulp, coniferous wood: hardwood=37:63 . The concentration of the slurry A obtained after the pulp board is refined is 3.0%.

[0059] Fiber Decay Inhibitor: Only Al(OH) is used 3 , without Mg(OH) 2 , added to water to form a suspension with a concentration of 10%.

[0060] The ratio of pulp A and fiber decay inhibitor is 95:5.

[0061] The mixing and stirring speed is 3000r / min, and the stirring time is 45min.

[0062] The slurry C concentration after washing was 1.0%.

[0063] The added amount of CPAM is 0.4% of the absolute dry pulp mass.

[0064] The slurry F concentration was 0.8%.

[0065] In the sizing process, the sizing agent used is surface sizing starch, and the dosage is 3g / m 2 .

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Abstract

The invention relates to a papermaking method for inhibiting plant fiber decay. The method comprises the steps of pulping and refining wood pulp boards to obtain slurry A; preparing fiber decay inhibitor suspension in a preparation tank; mixing slurry A with the prepared The suspension is stirred at a high speed in the mixing tank to obtain a uniformly mixed slurry B; after washing the slurry B, the slurry C is obtained; the slurry C is screened and purified and enters the forebay tank to obtain the slurry D, and then passes through a white water bucket, washed Slurry pump, enter the pressure screen, remove fiber bundles and impurities in the pressure screen to obtain slurry E, add CPAM retention aid to obtain slurry F; slurry F enters the headbox for slurry distribution, and dehydrates in the wire part to form wet paper After pressing, pre-drying, surface sizing, and post-drying; the master roll is formed in the roll paper part, and then rewinded and cut into products of required specifications. The method of the invention has the advantages of simple production process, the suppression of fiber decay can be realized from the source and the suppression effect is long-lasting, and the additives added are good in environmental friendliness and the like.

Description

technical field [0001] The invention relates to a papermaking method for suppressing plant fiber decay, and belongs to the technical field of papermaking. Background technique [0002] With the rapid development of my country's national economy, the paper industry has also developed rapidly. At present, my country's paper and cardboard production has leapt to the first place in the world. However, at the same time of rapid development, my country's paper industry is also facing many problems, mainly reflected in the shortage of raw materials, high energy consumption and severe environmental pressure. Compared with native plant fiber, regenerated plant fiber has a wide range of sources, and its pulping process is simple, energy consumption is low, and the amount of chemical additives is less, which can significantly reduce production costs and reduce the pressure of wastewater treatment, so its application range continues to expand , the current proportion in papermaking fib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/06D21C9/02D21D5/02D21F11/00
Inventor 杨静郝义国刘超罗林波吴波熊钢张良周倩倩黄子沛杨宇
Owner WUHAN IND TECH RES INST OF GEO RESOURES ENVIRONMENT CO LTD
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