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Wheat and rice straw filament rubbing process

A technology of rice straw and straw, which is applied in the rice straw rubbing process and wheat field, can solve the problems of straw lignin and cellulose structure damage, lack of temperature parameter control in the cooking process, and affect fiber function effects, etc., to reduce processing costs , moisture effect and high mechanical strength, easy to implement

Inactive Publication Date: 2014-05-14
CHANGSHA CHUANGYUAN ENVIRONMENTAL PROTECTION TECH
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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. Combing wheat straw or rice straw, removing debris and debris, cutting off the ear end to obtain straw.

[0015] 2. The straw obtained in step 1 is sent into a continuous roller press for rolling treatment, and the rolling speed is controlled to be 30m / min.

[0016] 3. Send the wheat straw obtained in step 2 into a digester for softening treatment, control the temperature at 80-88° C., the pressure at 0.15-0.2 MPa, and the softening time at 3.5 minutes.

[0017] 4. The straw obtained in step 3 is subjected to infrared drying treatment, and the water content is controlled to be 15%-25%.

[0018] 5. Send the straw obtained in step 4 into a straw kneading machine for kneading to obtain straw shreds, control the speed of the kneading machine to 2900-2950 rpm, and perform dust removal during the kneading process.

[0019] 6. Screen the straw silk obtained in step 5, and extract straw silk with a length ≥ 5 cm and a diameter of 1-3 mm. ...

Embodiment 2

[0023] (1) Implementation steps

[0024] 1. Combing the straw, removing debris and impurities, 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 treatment, and the rolling speed is controlled to be 25m / min.

[0026] 3. Send the straw obtained in step 2 into the digester for softening treatment, control the temperature at 90-110°C, the pressure at 0.15-0.2MPa, and the softening time at 1.5min.

[0027] 4. The straw obtained in step 3 is subjected to infrared drying treatment, and the water content is controlled to be 26%-33%.

[0028] 5. Send the straw obtained in step 4 into a straw kneading machine 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. Screen the straw silk obtained in step 5, and extract straw silk with a length ≥ 5 cm and a diameter of 1-3 mm.

[0030] (2) I...

Embodiment 3

[0033] (1) Implementation steps

[0034] 1. Combing the straw, removing debris and other sundries, cutting off the plucking end to obtain straw.

[0035] 2. Send the straw obtained in step 1 into a continuous rolling machine for rolling treatment, and the rolling speed is controlled to be 35m / min.

[0036] 3. Send the straw obtained in step 2 into a digester for softening treatment, control the temperature at 110-130° C., pressure at 0.15-0.25 MPa, and softening time for 2 minutes.

[0037] 4. The straw obtained in step 3 is subjected to infrared drying treatment, and the water content is controlled to be 26%-34%.

[0038] 5. Send the straw obtained in step 4 into a straw kneading machine for kneading treatment to obtain straw shreds, control the speed of the kneading machine to 2950-3100 rpm, and perform dust removal during the kneading process.

[0039] 6. Screen the straw silk obtained in step 5, and extract straw silk with a length ≥ 5 cm and a diameter of 1-3 mm.

[00...

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Abstract

The invention relates to a wheat and rice straw filament rubbing process which includes the steps of firstly, combing raw straws, removing impurities such as disintegrated slag, and cutting off spike end; secondly, rolling with a continuous rolling machine; thirdly, using steam for softening; fourthly, drying the straws and controlling water content; fifthly, performing filament rubbing with a straw filament rubbing machine to obtain straw filaments, and performing dust collecting during filament rubbing; sixthly, screening the straw filaments, and extracting the straw filaments not shorter than 5cm and 1-3mm in diameter. The process is simple to operate, easy to implement, low in cost, high in efficiency, and free of environment pollution. In addition, the produced filaments are long in fiber, high in mechanical strength and mainly applicable to manufacturing of products such as a vegetation carpet and a greening pad.

Description

technical field [0001] The invention relates to a silk kneading process, in particular to a silk kneading process of wheat and rice straws. Background technique [0002] my country is a large agricultural country with rich wheat and rice 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, the methods of straw fiber production mainly include 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 CN1644768 discloses a method for extracting straw fibers and attached tissues. The raw materia...

Claims

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Application Information

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IPC IPC(8): D01B1/10D01C1/00
Inventor 孙铁平朱立辉蔡明远
Owner CHANGSHA CHUANGYUAN ENVIRONMENTAL PROTECTION TECH
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