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Process for preparing cultural paper by utilizing full-recovered pulp
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A technology of cultural paper and full recovery, applied in the field of papermaking technology, can solve the problems of high dust impurities and low whiteness
Inactive Publication Date: 2014-04-23
DONGGUAN NINE DRAGONS PAPER IND
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Problems solved by technology
At present, most of the production of cultural paper still uses log pulp, or high-quality office waste paper, which not only relies heavily on high-quality office waste paper raw materials, but also prepares pulp due to low whiteness and many dust impurities. It is limited that it can only be used in the copying of low-grade cultural paper
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Embodiment 1
[0054] A process for preparing cultural paper from fully recovered pulp, specifically a process for preparing office paper from fully recovered pulp, includes the following steps:
[0055] Step A. Picking and loading of waste paper materials: feed the US waste 37#:日废5#:美废10#:美废8# according to the weight percentage of 30%: 30%: 20%: 20% to be shredded In the pulp machine.
[0056] Step B. Disintegration: add 0.4% NaOH and 0.6-0.7% Na in the disintegration zone in the front section of the drum pulper 2 Sio 2 , 0.2-0.3% industrial soap and 0.05% H 2 O 2 Wait for chemicals, and then add 70-80℃ white water to make the concentration of the disintegration zone 20-22%, the temperature is 50-60℃, the PH value is 9-10.5, the waste paper raw materials are gently pulped to obtain the slurry.
[0057] Step C. Screening and purification: the slurry is firstly cleaned of impurities, and then coarsely screened by a high-concentration cleaner, a two-stage coarse screen, and a high-concentration centr...
Embodiment 2
[0076] A process for preparing cultural paper from fully recovered pulp, specifically a process for preparing office paper from fully recovered pulp, includes the following steps:
[0077] Step A. Picking and loading of waste paper materials will feed the US waste 37#:日废5#:美废10#:美废8# according to the weight percentage of 20%: 40%: 25%: 15% to the pulp In the machine.
[0078] Step B. Disintegration: Add 0.5 NaOH and 0.6-0.7% Na in the disintegration zone in the front section of the drum pulper 2 Sio 2 , 0.2-0.3% industrial soap and 0.03% H 2 O 2 Wait for chemicals, and then add 70-80℃ white water to make the concentration of the disintegration zone 20-22%, the temperature is 50-60℃, the PH value is 9-10.5, the waste paper raw materials are gently pulped to obtain the slurry.
[0079] Step C. Screening and purification: the slurry is firstly cleaned of impurities, and then coarsely screened by a high-concentration cleaner, a two-stage coarse screen, and a high-concentration centrifuga...
Embodiment 3
[0098] A process for preparing cultural paper from fully recovered pulp, specifically a process for preparing office paper from fully recovered pulp, includes the following steps:
[0099] Step A. Picking and loading of waste paper materials: feed the US waste 37#:日废5#:美废10#:美废8# according to the weight percentage of 30%: 30%: 30%: 10% to be shredded In the pulp machine. .
[0100] Step B. Disintegration: Add 0.6 NaOH and 0.6-0.7% Na in the disintegration zone in the front section of the drum pulper 2 Sio 2 , 0.2-0.3% industrial soap and 0.06% H 2 O 2 Wait for chemicals, and then add 70-80℃ white water to make the concentration of the disintegration zone 20-22%, the temperature is 50-60℃, the PH value is 9-10.5, the waste paper raw materials are gently pulped to obtain the slurry.
[0101] Step C. Screening and purification: the slurry is firstly cleaned of impurities, and then coarsely screened by a high-concentration cleaner, a two-stage coarse screen, and a high-concentration cen...
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Abstract
The invention belongs to the technical field of a papermaking process and particularly relates to a process for preparing cultural paper by utilizing full-recovered pulp. The process for preparing the cultural paper by utilizing the full-recovered pulp comprises the following preparation steps of: a step A of sorting and loading waste paper raw materials; a step B of beating; a step C of screening and purifying; a step D of carrying out primary floatation deinking; a step E of carrying out primary concentration and heat dispersion; a step F of carrying out secondary floatation deinking; a step G of carrying out secondary concentration and heat dispersion; a step H of carrying out oxidation bleaching; a step I of carrying out reduction bleaching; a step J of storing in a tower; a step K of milling pulp; a step L of preparing the pulp; a step M of forming and manufacturing the paper with the pulp; a step N of squeezing and dehydrating; a step O of drying; a step P of squeezing and sizing; and a step Q of carrying out press polishing and then completing processing of a finished product by the working sections of reeling, rewinding, packaging and warehousing. According to the process disclosed by the invention, the high-quality cultural paper of which the appearance quality and the physical indexes all reach the domestic and overseas standards is produced by utilizing the low-price waste paper raw materials; the production cost is reduced; the production environment is clean and environmental-friendly; and the production efficiency is high.
Description
technical field [0001] The invention belongs to the technical field of papermaking technology, and in particular relates to a technology for preparing cultural paper by utilizing fully recovered pulp. Background technique [0002] For paper pulp, the pulp obtained directly from fiber raw materials (usually wood) is called primary fiber or primary fiber, and the pulp obtained from waste paper is called recycled fiber or secondary fiber. In addition to the direct source of plant raw materials, pulping fiber raw materials also have another important raw material resource, which is the secondary fiber after pulping of paper and cardboard. For countries that lack fiber raw materials, the use of secondary fibers has important economic significance. For the paper industry, waste paper is a very important reusable resource, and recycled paper is a term currently proposed for such reusable resources. Because the raw materials are easy to get, and the process is simple, more importa...
Claims
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Application Information
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