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Papermaking method by oxidizing banana stemfiber

A technology of banana stems and fibers, applied in the post-processing of cellulose pulp, papermaking, textiles and papermaking, etc., to achieve the effects of improved pulp yield, high yield and advanced technology

Inactive Publication Date: 2012-10-17
云南柏昇生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The fiber content of banana stems is not less than 10%. The molecular structure is different from other fiber structures in that its fibers are relatively brittle and will break after drying. It is difficult to achieve the goal with traditional papermaking methods.

Method used

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  • Papermaking method by oxidizing banana stemfiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Slicing:

[0017] 1000 kilograms of fresh banana stalks after harvesting are collected and cut into 5 × 7 cm slices with a slicer, and then the sheet-shaped stalks are roughly ground into fiber slurry with a coarse grinder for pulping in a paper mill.

[0018] 2. Washing:

[0019] After being transported to a continuous hydropulper with a volume of 5 cubic meters by a screw machine for cleaning, it flows into a vibrating screen with an aperture of 6 mm for washing, and the hemicellulose, lignin and pectin are washed away by washing.

[0020] 3. Squeeze:

[0021] After washing, an extruder is used to extrude the fiber slurry with a water content of 50-60%.

[0022] 4. Oxidation:

[0023] Put the extruded fiber slurry into a circular carbon steel container with a volume of 5 cubic meters, add 10 kg of quicklime with a pH value of 7-8, and stir for 20-30 minutes. At the same time, slowly add sodium hypochlorite with a content of 85% to 5-7% of the quality of the fib...

Embodiment 2

[0027] 1. Slicing: Collect 2,000 kg of fresh banana stems after harvesting and cut them into 5×7cm slices with a slicer, and then use the coarse grinder used in paper mills to roughly grind the sliced ​​stems into fiber pulp material;

[0028] 2. Washing:

[0029] After being transported to a continuous hydropulper with a volume of 5 cubic meters by a screw machine for cleaning, it flows into a vibrating screen with an aperture of 6 mm for washing, and the hemicellulose, lignin and pectin are washed away by washing.

[0030] 3. Squeeze:

[0031] After washing, an extruder is used to extrude the fiber slurry with a water content of 50-60%.

[0032] 4. Oxidation:

[0033] Put the extruded fiber slurry into a circular carbon steel container with a volume of 5 cubic meters, add 20 kg of quicklime with a pH value of 7-8, and stir for 20-30 minutes. At the same time, slowly add sodium hypochlorite with a content of 85% to 5-7% of the quality of the fiber slurry with a water cont...

Embodiment 3

[0037] 1. Slicing:

[0038] Collect 5,000 kg of harvested banana stems and cut them into 5×7 cm slices with a slicer, and then coarsely grind the sliced ​​banana stems with a coarse grinder commonly used in paper mills for pulping.

[0039] 2. Washing:

[0040] After being transported to a continuous hydropulper with a volume of 5 cubic meters by a screw machine for cleaning, it flows into a vibrating screen with an aperture of 6 mm for washing, and the hemicellulose, lignin and pectin are washed away by washing.

[0041] 3. Squeeze:

[0042] After washing, an extruder is used to extrude the fiber slurry with a water content of 50-60%.

[0043] 4. Oxidation:

[0044] Put the extruded fiber slurry into a circular carbon steel container with a volume of 5 cubic meters, add 50 kg of quicklime with a pH value of 7-8, and stir for 20-30 minutes. At the same time, slowly add sodium hypochlorite with a content of 85% to 5-7% of the quality of the fiber slurry with a moisture cont...

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Abstract

The invention provides a papermaking method by oxidizing banana stemfiber, comprising the following steps of: cutting banana stem into sheets, and coarsely grinding into fiber sizing agent; washing the fiber sizing agent to remove hemicellulose, lignin, pectin and the like in a washing way; extruding to be fiber sizing agent which has 50%-60% of moisture after washing; adding quick lime and sodium hypochlorite after extruding, charging CO2 gas to oxidize the fiber sizing agent, separating impurity by a centrifugal pulp screen after oxidizing, and carrying out medium-consistency grinding on the pulp to be 32-36 beating degree in the process of separating; and mixing the sizing agent as required, so that the sizing agent is applicable to the sizing agent quality requirement of various papers. According to the invention, the papermaking method which oxidizes the banana stemfiber, and is free from stewing, pollution-free to environment, low-carbon, and energy-saving is adopted, so that the banana fiber papermaking difficulty can be effectively solved, the banana stemfiber can be softened within 40min, and the integrants which can not be used for papermaking in the hemicellulose, the lignin and the banana stem can be separated; and therefore, the banana fiber paper pulp which is suitable for making the fine paper can be obtained.

Description

technical field [0001] The invention relates to a papermaking method for oxidizing banana stem fibers. Background technique [0002] At present, papermaking enterprises are restricted by the bottleneck of development, which mainly comes from the following reasons. One is the shortage of resources. It takes 10-15 years to grow each cubic meter of wood. The other is that too much wood is cut down for papermaking, which is not conducive to soil and water conservation. Natural disasters such as mudslides and sandstorms are common. Excessive deforestation is closely related to the imbalance of soil and water conservation. [0003] The traditional papermaking process mostly uses strong alkali and strong acid cooking methods, and the discharge of "three wastes" will inevitably pollute the environment, which has attracted the attention of the government and relevant departments. Therefore, papermaking enterprises with insufficient environmental protection are closed, shut down, mer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/12D21C9/00
Inventor 黄润燕黄一书许灿姬
Owner 云南柏昇生物科技有限公司
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