Method for producing corn stalk pulp and paper products from corn stalk pulp
First Claim
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1. A method for producing pulp from agricultural residues, comprising:
- harvesting a portion of a cornstalk plant, wherein the harvesting includes removing a portion of the cornstalk below about at least one of a ear on the cornstalk plant;
drying the cornstalk portions;
chopping the cornstalk portions;
washing of the chopped cornstalk portions;
compacting the washed cornstalk portions in a screw feeder to remove water;
extracting pulp from the compacted cornstalk portions with an alkaline pulping solution at predetermined conditions;
fiberizing the pulp;
washing the pulp; and
treating of the fiberized and washed pulp with a bleaching solution, wherein the bleaching solution removes residual lignin and color for increasing the brightness to greater than about 70% ISO.
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Abstract
A new method for making pulp out of agricultural residue includes harvesting certain portion of plant stalk. The harvested plant stalk is bailed, transported and stored. At the mill, the plant stalk is chopped and goes through pulping process. The pulp is used to make varieties of papers with or without blending other wood based pulp.
33 Citations
32 Claims
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1. A method for producing pulp from agricultural residues, comprising:
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harvesting a portion of a cornstalk plant, wherein the harvesting includes removing a portion of the cornstalk below about at least one of a ear on the cornstalk plant;
drying the cornstalk portions;
chopping the cornstalk portions;
washing of the chopped cornstalk portions;
compacting the washed cornstalk portions in a screw feeder to remove water;
extracting pulp from the compacted cornstalk portions with an alkaline pulping solution at predetermined conditions;
fiberizing the pulp;
washing the pulp; and
treating of the fiberized and washed pulp with a bleaching solution, wherein the bleaching solution removes residual lignin and color for increasing the brightness to greater than about 70% ISO. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for making paper out of pulp from agricultural residue, comprising:
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refining pulp from agricultural residue;
blending the pulp from agricultural residue;
cleaning;
screening; and
rolling in the paper machine, wherein the pulp from agricultural residue is cornstalk pulp. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification