Method for preparing pulp for making natural-color packaging paperboards by using corn straw raw material

A technology of corn stalks and packaging cardboard, applied in the direction of non-woody plant/crop pulp, fiber raw materials, raw material separation, etc., can solve the problems that are not suitable for large-scale application, cannot be used in large-scale production, and are not conducive to large-scale application. Achieve the effect of realizing large-scale comprehensive utilization, realizing clean comprehensive utilization, and reducing chemical consumption
CN109629282AInactive Publication Date: 2019-04-16INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
Publication Date
2019-04-16
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a method for preparing pulp for making natural-color packaging paperboards by using a corn straw raw material. The corn straw raw material is pretreated to separate most leaves and piths of corn straw and then is pulped by adopting a chemical mechanical method, and prepared paper pulp can replace waste paper pulp to be used for making corrugated raw paper or cardboard paper and other natural-color packaging paperboards. The method is characterized in that the structural characteristics of different components such as leaves, piths and straw skin in the corn straw raw material are fully utilized, the leaves and piths with smaller fiber contents are turned into powder or granules and the straw with higher fiber content is turned into dense sheets in the pretreatmentprocess, and then the extruded powder or granular leaves and piths are separated through screening for preparation of fodders or bio-organic fertilizers; the straw skin raw material without leaves andpiths is pulped by adopting the chemical mechanical method, and the organic waste generated in the preparation and pulping process can be used for preparing the fodders or bio-organic fertilizers.
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Description

technical field

[0001] The invention belongs to the field of high-efficiency utilization of agricultural stalks, and in particular relates to a method for preparing natural-color packaging cardboard compounding pulp by using corn stalks as raw materials. Background technique

[0002] my country is a big corn planting country, and a large amount of corn stalks are produced every year. In 2016, my country's corn production was 219.6 million tons. According to the ratio of 1:1.6 of corn seeds and corn stalks produced by a plant of corn, the corn stalks produced reached more than 350 million tons. At present, only a small amount of such a huge amount of corn stalks is used as feed, biomass fuel or directly returned to the field. Waste, and a large amount of dense smog produced not only pollutes the environment, but also easily causes fires and traffic accidents, seriously threatening the safety of people's lives and property. On the other hand, there is a serious shortage of p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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