Oil-tea camellia fruit shell semi-chemical pulp preparing process

A technology of camellia oleifera husk and semi-chemical pulp, which is applied in textiles and papermaking, fiber raw material treatment, fiber raw material, etc., to achieve the effects of protecting the natural environment, low production cost, and easy large-scale production

Inactive Publication Date: 2014-04-02
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention proposes a method for preparing semi-chemical pulp by using camellia oleifera husk as a new raw mat...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]The camellia oleifera husk raw material is crushed and dedusted, and then the hot water obtained by recovering heat energy from the alkali recovery workshop is used to pre-extract the camellia oleifera husk to remove part of the resin, tannin, and polysaccharides. The Camellia oleifera husk pre-extracted by hot water is sent to a screw extruder for extrusion pretreatment, and at the same time, 0.1% of the weight of the dry camellia oleifera husk is added with sodium lauryl sulfate cooking penetrant and cooking liquid for further processing. Alkaline cooking; the composition of the cooking liquid and the cooking process are as follows: the amount of alkali (calculated as NaOH) is 8%; the amount of AQ is 0.05%; the ratio of liquid to liquid is 1:4; The minimum steam release time is 10 minutes, and the heat preservation time is 60 minutes. After the cooking is completed, the material is discharged by decompression spraying, and the sprayed slurry is sent to two series-conne...

Embodiment 2

[0035] The camellia oleifera husk raw material is crushed and dedusted, and then the hot water obtained by recovering heat energy from the alkali recovery workshop is used to pre-extract the camellia oleifera husk to remove part of the resin, tannin, and polysaccharides. The Camellia oleifera husk pre-extracted by hot water is sent to the screw extruder for extrusion pretreatment, and at the same time, 0.2% of the weight of the dry camellia oleifera husk is added with sodium dodecylbenzenesulfonate cooking penetrating agent and cooking medicine Alkaline cooking of liquid; the composition and cooking process of the cooking liquid are as follows: the amount of alkali (calculated as NaOH) is 10%; the amount of AQ is 0.05%; the ratio of liquid to liquid is 1:5; 60min, minimum steam release time 15min, holding time: 60min. After the cooking is completed, the material is discharged by decompression spraying, and the sprayed slurry is sent to two series-connected twin-roll presses fo...

Embodiment 3

[0037] The camellia oleifera husk raw material is crushed and dedusted, and then the hot water obtained by recovering heat energy from the alkali recovery workshop is used to pre-extract the camellia oleifera husk to remove part of the resin, tannin, and polysaccharides. Camellia oleifera husk pre-extracted by hot water is sent to a screw extruder for extrusion pretreatment, and at the same time, 0.2% of the weight of the dry camellia oleifera husk is mixed with sodium lauryl sulfate and OP-10 cooking penetrant and cooking liquid are used for alkaline cooking. The composition of the cooking liquid and the cooking process are as follows: the amount of alkali (calculated as NaOH) is 12%; the amount of AQ is 0.05%; the ratio of liquid to liquid is 1:6; Temperature: 155°C, heating time: 75min, small steam release time: 15min, holding time: 60min. After the cooking is completed, the material is discharged by decompression spraying, and the sprayed slurry is sent to two series-conne...

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Abstract

The invention discloses an oil-tea camellia fruit shell semi-chemical pulp preparing process, comprising main steps of preprocessing, boiling, black liquid extracting, washing, mechanical pulp grinding, abeyance eliminating, purifying and screening. Oil-tea camellia fruit shell waste with rich resources is used as a new pulping raw material to produce semi-chemical pulp, so the comprehensive use problem of the oil-tea camellia fruit shell waste is effectively solved, the condition of fiber resource shortage in the paper making industry is relieved, the wood resource consumption in pulping and papermaking is reduced, and the natural environment is protected; the oil-tea camellia fruit shell semi-chemical pulp preparing process overcomes the negative influence of chemical composition of oil-tea camellia fruit shells to the pulping performances, a semi-chemical pulping method massively retaining lignin and hemicellulose is adopted, and the prepared oil-tea camellia fruit shell semi-chemical pulp is less in chemical medicine consumption, high in paper pulp yield, good in strength and low in cost. The oil-tea camellia fruit shell semi-chemical pulp preparing process is strong in operability, low in production cost and easy for realizing large-scale production.

Description

technical field [0001] The invention relates to a process for preparing camellia oleifera shell semi-chemical pulp, belonging to the technical field of papermaking. Background technique [0002] Camellia oleifera is a unique woody edible oil tree species in my country. It is also known as the world's four major woody oil plants together with olive, oil palm and coconut. It is mainly produced in the southern provinces of my country. Camellia oleifera husk is the shell of camellia oleifera fruit, accounting for more than 60% of the whole camellia oleifera fruit mass, and its composition is complex, rich in hemicellulose, lignin, cellulose and tannin (polyphenol) substances. At present, the cultivation area of ​​camellia oleifera in my country has reached more than 45 million mu, with an annual output of more than 5.6 million tons of camellia oleifera fruit and more than 3 million tons of camellia oleifera shell. If such a huge camellia oleifera shell resource can be fully util...

Claims

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Application Information

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IPC IPC(8): D21B1/16
Inventor 李湘洲刘艳新张胜王玉珑李文生旷春桃杨艳红
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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