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Straw rubbing process

A straw and process technology, applied in the field of straw kneading process, can solve the problems of straw lignin and cellulose structure damage, lack of temperature parameter control in the cooking process, and affecting fiber function effects, etc., to ensure the length of kneading silk, moisture effect and The effect of high mechanical strength and easy implementation

Inactive Publication Date: 2010-07-21
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this patent are: firstly, because the straw is a softening material, the method of cutting and loosening the straw with a cutting machine is not feasible; secondly, the cooking process lacks temperature parameter control, and the high temperature will easily lead to the lignin and cellulose structure of the straw. Thirdly, because the working principle of the fiber opener is that the high-speed rotating opening roller full of steel nails and the fixed nail plate form cross tearing to complete the fiber opening, so the fiber opening machine is adopted. Most of the fibers extracted from pine are short in length, poor in uniformity, and low in toughness, resulting in low strength of the produced mulch, seedling throwing trays and seedling trays, which cannot be used in landscaping and ecological engineering at all.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Implementation steps

[0014] 1) Wheat straw, and combing to remove sundries such as slag, and cutting off the ear end to obtain straw.

[0015] 2) The wheat straw obtained in step 1) is fed into a continuous rolling machine, and the rolling speed is controlled at 25 m / min.

[0016] 3) Sending the wheat straw obtained in step 2) into a digester for softening treatment, controlling the temperature at 80-85° C., the pressure at 0.15-0.2 MPa, and the softening time at 3 minutes.

[0017] 4) The straw obtained in step 3) is subjected to infrared drying treatment, and the water content is controlled to be 18%-23%.

[0018] 5) Put the straw obtained in step 4) into a straw kneading machine (model 9RC-50) for kneading to obtain straw shreds, and control the speed of the kneading machine to 2900-2950 rpm, and perform dust removal during the kneading process deal with.

[0019] 6) Screening the straw silk obtained in step 5), and extracting the straw silk with a length ≥ ...

Embodiment 2

[0023] (1) Implementation steps

[0024] 1) Combing the straw, removing impurities such as debris, and cutting off the plucking end to obtain straw.

[0025] 2) Send the straw obtained in step 1) into a continuous rolling machine for rolling, and the rolling speed is controlled at 20 m / min.

[0026] 3) The straw obtained in step 2) is sent into a digester for softening treatment, the temperature is controlled at 90-110° C., the pressure is 0.1-0.15 MPa, and the softening time is 1 min.

[0027] 4) The straw obtained in step 3) is subjected to infrared drying treatment, and the water content is controlled to be 28% to 33%.

[0028] 5) Put the straw obtained in step 4) into a straw kneading machine (model 9RC-50) for kneading to obtain straw shreds, control the speed of the kneading machine to 2930-2980 rpm, and perform dust removal during the kneading process .

[0029] 6) Screening the straw silk obtained in step 5), and extracting the straw silk with a length ≥ 5 cm and a ...

Embodiment 3

[0033] (1) Implementation steps

[0034] 1) The straw is combed, debris and other debris are removed, and the ear ends are cut off to obtain straw.

[0035] 2) Send the straw obtained in step 1) into a continuous rolling machine for rolling, and the rolling speed is controlled at 30 m / min.

[0036] 3) The straw obtained in step 2) is sent into a digester for softening treatment, the temperature is controlled at 110-120° C., the pressure is 0.15-0.2 MPa, and the softening time is 2 minutes.

[0037] 4) The straw obtained in step 3) is subjected to infrared drying treatment, and the water content is controlled to be 28% to 33%.

[0038] 5) Send the straw obtained in step 4) into a straw kneading machine (model 9RC-50) for kneading treatment, control the rotation speed of the kneading machine to 2950-3000 rpm), and perform dust removal during the kneading process.

[0039] 6) The straw silk obtained in step 5) is screened to extract straw silk with a length ≥ 5 cm and a diamete...

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Abstract

The invention provides a straw rubbing process, which comprises the following operating steps: 1) carding raw material straws, removing sundries, such as broken pieces and the like, and cutting fringe pulling ends away; 2) rolling the straws with a continuous roll squeezer; 3) softening the straws with vapor; 4) drying the straws and controlling water content; 5) rubbing the straws with a straw rubbing machine to obtain straw threads and removing dust during the rubbing process; and 6) screening the straw threads to extract the straw threads with lengths not less than 5cm and diameters of 1 to 3mm. The process has the advantages of simple operation, easy implementation, low cost, high efficiency, no pollution to the environment, relatively longer silky fibers and high mechanical strength, and is mainly used for manufacturing products, such as a vegetation carpet, a green pad and the like.

Description

technical field [0001] The invention relates to a silk rubbing process, in particular to a straw rubbing silk process. Background technique [0002] my country is a large agricultural country with rich straw resources. In recent years, a new way to utilize straw resources is to separate straw fibers and make them into vegetation blankets, greening mats and other products for landscaping or ecological protection. At present, straw fiber production mainly includes three types: chemical separation method, biological treatment method and physical method. Among them, chemical treatment has low efficiency, high cost, and great environmental pollution; while biological treatment has uneven finished product shape and long cycle; physical treatment has the advantages of simple operation, easy implementation, and no pollution. Chinese patent CN 1644768 discloses a method for extracting straw fiber and attached tissue. The raw material is rice straw, wheat straw, corn stalk or other c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01B1/10
Inventor 李绍才杨涛孙海龙
Owner SICHUAN UNIV
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