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Wood and bamboo fiber mercerizing pulp and preparation method thereof

A technology of bamboo fiber silk and actinic pulp, which is applied in the fields of cellulose raw material pulping, natural cellulose pulp/paper, fiber raw material treatment, etc., can solve the problems that the preparation method has not been published in public reports, etc., and achieve a wide range of application of the method, Improved strength and high yield

Inactive Publication Date: 2012-03-21
张金
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no non-cotton fiber mercerized pulp products have been found, especially wood and bamboo fiber mercerized pulp and its preparation methods have not been publicly reported

Method used

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  • Wood and bamboo fiber mercerizing pulp and preparation method thereof
  • Wood and bamboo fiber mercerizing pulp and preparation method thereof
  • Wood and bamboo fiber mercerizing pulp and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1, raw material: roll shape coniferous pulp

[0061] The roll-shaped coniferous pulp passes through the swelling pool at a speed of 20-40m / min, the temperature of the clear water in the swelling pool is 35°C, the swelling time is 15s, and continues to run forward at a running speed of 20-40m / min to enter mercerization In the chemical zone, at a temperature of 25°C, treat it with a NaOH solution with a concentration of 14wt% for 15s. The NaOH solution is placed in an alkali-resistant mercerizing pool. Both the swelling pool and the mercerizing pool are ceramic water tank pools with temperature measuring devices, with a size of 5000mm*3000mm*1200mm.

[0062] The reel pulp after mercerizing treatment is squeezed with a pressure of 5kN / m to remove most of the residual lye, and then enters the neutralization zone. The temperature of the neutralization zone is 20°C, and the concentration of the neutralization solution is 8wt % waste sulfuric acid or waste hydroch...

Embodiment 2

[0067] Embodiment 2, raw material: flat coniferous pulp

[0068] Step 1: Dissolve the flat coniferous pulp with clean water to a concentration of 3.0-4.0%, at a temperature of 35°C, pulp with a hydraulic pulper, and then swell for 40 minutes. ZJGS energy-saving hydraulic pulper, Zhucheng Jinlong Machinery Manufacturing Co., Ltd.

[0069] Step 2: Transport the slurry obtained in Step 1 to the mercerizing tank filled with NaOH solution, the transport speed is 30m / min, and treat it with NaOH solution with a concentration of 13wt% at 35°C and normal pressure for 15s to perform mercerization treatment. The above mentioned slurry was carried by polyester mesh.

[0070] There are rubber baffles 2 on both sides of the polyester mesh 1, and the two ends of the polyester mesh belt are closed into a ring, which is set on 2 rollers, one is the driving roller 3, which is used to drive the movement of the polyester mesh belt, and the other It is the passive roller 4, and the polyester ne...

Embodiment 3

[0076] Embodiment 3: Mercerization of loose hardwood pulp

[0077] The loose hardwood pulp is diluted with clear water to a pulp concentration of 3.5 wt%, and the temperature is swollen at 35° C. for 45 minutes.

[0078] Gained slurry is conveyed in the mercerizing pool that fills NaOH solution, and mercerizing treatment is identical with embodiment 2.

[0079] The slurry obtained after mercerizing uses a concentrator (ZYW gravity rotary screen concentrator, Zhucheng Jinlong Machinery Manufacturing Co., Ltd.) to remove most of the residual lye. %, and then enter the neutralization tank for neutralization. The neutralization zone conditions are low temperature 7°C, normal pressure, neutralization solution is waste hydrochloric acid, the concentration of waste acid is 8%, and the neutralization time is 13s.

[0080] The pulp obtained after neutralization was washed with a cylinder thickener (ZNW30, Zibo Light Industry Machinery Co., Ltd.), clean water, normal pressure, temperat...

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Abstract

The invention relates to a wood and bamboo fiber mercerizing pulp and a preparation method thereof. The fiber mercerizing pulp is prepared through the following steps: swelling, mercerizing, neutralizing, washing, concentrating, drying a wood pulp or bamboo pulp which is utilized as a raw material in a free state of the fiber without a pressing or clamping state, wherein the obtained mercerized fiber is natural in flexibility. The mercerizing pulp obtained in the invention is good in air permeability, good in intensity, large in fiber length, high in yield and low in cost; and the cotton fiber is saved.

Description

technical field [0001] The invention relates to a mercerized pulp made of non-cotton fiber, that is, a non-cellulose fiber as a raw material, in particular to a mercerized pulp made of wood fiber or bamboo fiber and processed through a special process with special properties, which belongs to pulp and papermaking technology field. Background technique [0002] Mercerized pulp is treated with special processing technology to make the surface structure, internal structure, fiber shape, fiber polymerization degree, etc. are obviously different from ordinary pulp; it is endowed with special properties, so it is widely used in textile , medicine, special paper manufacturing, chemical industry, biological engineering and other industries. [0003] Because cotton raw materials must be obtained from cultivated land economically, the output is limited. At present, cotton fiber raw materials are becoming more and more scarce, and the price is soaring. Therefore, it is of great signi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/00D21C3/22
Inventor 张金秦大伟朱春燕董慧婷田振
Owner 张金
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