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A kind of production method of thermal pulping of wood chips instead of OCC pulp to produce bobbin paper

A production method and bobbin paper technology, applied in mechanical/thermo-mechanical pulp, papermaking, paper and other directions, can solve the problem of tight supply of OCC waste paper, and achieve the effect of reducing consumption and production cost

Active Publication Date: 2021-04-16
LIANSHENG PAPER IND LONGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For this reason, it is necessary to provide a production method of thermally refining wood chips instead of OCC pulp to produce bobbin paper, which is used to solve the production problem of tight supply of OCC waste paper in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment relates to a production method for producing bobbin paper by thermally refining wood chips instead of OCC pulp, comprising the following steps:

[0037] OCC stock preparation:

[0038] Using waste cardboard as raw material, OCC pulp is produced through conventional OCC pulping line feeding, crushing, deslagging, screening, thickening, pulp refining, and pulp storage;

[0039] Wood chip thermal refining pulp preparation:

[0040] Using twig wood chips as raw materials, wood chips are thermally refined through the process of wood chip thermal refining preparation line feeding, wood chip thermal grinding, double disc refining, fine screening, concentration, and pulp storage;

[0041] Wherein, in the thermal grinding step of the wood chips, a thermal grinder is used to thermally grind the twig wood chips, and the twig wood chips are decomposed into single wood fibers; Fine grinding, the finely ground pulp is screened through a fine screen, and the screened...

Embodiment 2

[0068] The difference between the production method for producing bobbin paper by thermally refining wood chips instead of OCC pulp involved in this embodiment and the production method for producing bobbin paper by thermally refining wood chips instead of OCC pulp disclosed in Example 1 is that in the pulping step, The thermal refining of wood chips accounts for 10% of the pulp in the core layer of bobbin paper; the proportion of thermal refining of wood chips in the pulp of the core layer of bobbin paper directly affects the amount of OCC pulp used. The larger the proportion of thermal refining of wood chips, the less The more OCC waste paper raw materials are used, and vice versa.

Embodiment 3

[0070] The difference between the production method for producing bobbin paper by thermally refining wood chips instead of OCC pulp involved in this embodiment and the production method for producing bobbin paper by thermally refining wood chips instead of OCC pulp disclosed in Example 1 is that in the pulping step, Wood chip thermal refining accounts for 60% of the pulp of the bobbin paper core layer; the proportion of wood chip thermal refining pulp to the bobbin paper core layer pulp directly affects the amount of OCC pulp used. The larger the proportion of wood chip thermal refining, the less The more OCC waste paper raw materials are used, and vice versa.

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Abstract

The invention relates to a production method for wood chip thermal refining instead of OCC pulp to produce bobbin paper. In OCC long-fiber pulp tower, OCC short-fiber pulp tower, and OCC medium-fiber pulp tower, thermally refined wood chips flow into the wood chip thermally refined pulp tower; among them, wood chip thermally refined pulp accounts for 10% of the pulp in the core layer of bobbins. 60%; plagiarism. Different from the prior art, the present invention adds OCC slurries with different fiber lengths according to the different needs of the bobbin paper surface layer, core layer, and bottom layer; The ratio is mixed to make the bobbin paper core layer. Wood chip thermal refining is used as filler, no alkali and other chemical agents are used to remove part of the lignin, and no lye wastewater is produced. The problem of replacing OCC waste paper raw materials is effectively solved, the consumption of OCC waste paper is reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a method for producing bobbin paper by thermally refining wood chips instead of OCC pulp. Background technique [0002] The production of bobbin paper is mostly made of recycled OCC waste paper raw materials (including imported and domestic waste paper), which are disintegrated by OCC pulping line to remove various impurities, prepare qualified OCC pulp, and paper feeder is mixed with pulp to make paper. . [0003] With the promulgation and implementation of the country's "Prohibition of Foreign Garbage Entry and Promotion of Solid Waste Import Management System Reform Implementation Plan" in July 2017, the import quota of imported OCC waste paper with some foreign waste is restricted, and the supply of OCC waste paper is tight. , objectively prompting enterprises to develop new processes and reduce the amount of OCC waste paper. [0004] Authorized patent No. ZL20161061451...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H15/10D21H11/14D21H11/08D21H19/14D21H23/50D21F11/00
CPCD21F11/00D21H11/08D21H11/14D21H15/10D21H19/14D21H23/50
Inventor 陈光军王贵敏张永春周志强
Owner LIANSHENG PAPER IND LONGHAI
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