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Paper machine system for reducing dosage of sizing agent in pulp and treatment method of paper machine system

An internal sizing agent and paper machine technology, applied in the field of papermaking, can solve the problem of large amount of sizing agent in pulp and achieve the effect of maintaining stability

Inactive Publication Date: 2017-01-04
DONGGUAN NINE DRAGONS PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above-mentioned problem that the amount of sizing agent in the pulp is too large in the process of producing cultural paper with recycled fiber as raw material in the prior art paper machine, the present invention provides a paper machine system and a treatment method for reducing the amount of sizing agent in the pulp

Method used

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  • Paper machine system for reducing dosage of sizing agent in pulp and treatment method of paper machine system

Examples

Experimental program
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Effect test

Embodiment 1

[0034] This embodiment provides a paper machine system for reducing the amount of sizing agent in the pulp. The system includes a bleaching chemical thermomechanical pulp after-treatment tank 1, a mixed office waste paper deinking pulp after-treatment tank 2, and a mixed pulp tank 3 , paper machine pulp tank 4, one-stage slag remover 5, paper machine white water chute 6, one-stage pressure screen 7 and paper machine wire headbox 8, wherein, bleached chemical thermomechanical pulp knocking back tank 1 and mixed office waste paper Deinked pulp knocking tank 2 is connected with mixed pulp tank 3 at the same time, mixed pulp tank 3, paper machine pulp tank 4, first-stage slag remover 5, paper machine white water chute 6, first-stage pressure screen 7 and paper machine wire headbox 8 are connected in sequence, an anion garbage catcher adding device 9 is set between the bleaching chemical thermomechanical pulp knocking tank 1 and the mixed pulp tank 3, and an anion is set between the...

Embodiment 2

[0037] This embodiment provides a processing method for the paper machine system described in Embodiment 1, the method is:

[0038] In the process of sending the bleached chemical thermomechanical pulp and mixed office waste deinked pulp into the mixing tank 3 for mixing to form a mixed pulp, add 2.0 kg to the bleached chemical thermomechanical pulp and mixed office waste deinked pulp respectively / T pulp anionic garbage catcher PAC, the mixed mixed pulp is sequentially processed through the paper machine pulp tank 4, the first stage slag remover 5, the paper machine white water chute 6, the first stage pressure screen 7 and the paper machine wire headbox 8 to obtain product.

[0039] During the treatment of the mixed pulp in the white water chute 6 of the paper machine, an anionic garbage catcher is added to the white water chute 6 of the paper machine.

[0040] During the above treatment process, the PCD of BCTMP pulp line is -45Ueq / L; the PCD of DMOW pulp line is -150Ueq / L...

Embodiment 3

[0042] This embodiment provides the treatment method of the paper machine system described in Example 1. In the method, except that the amount of the anionic garbage catcher PAC is 1.5kg / T pulp anionic garbage catcher PAC, the amount of other materials and the treatment process All the same as in Example 2.

[0043] During the above treatment process, the PCD of BCTMP pulp line is -74Ueq / L; the PCD of DMOW pulp line is -232Ueq / L; the PCD of paper machine white water system is -145Ueq / L; the amount of neutral sizing agent ASA is 2.0kg / T paper.

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Abstract

The invention provides a paper machine system for reducing the dosage of a sizing agent in pulp and a treatment method of the paper machine system. The system comprises a bleaching chemithermomechanical pulp chest after refiner, a mixed office waste paper deinked pulp chest after refiner, a mixed pulp chest, a paper machine pulp chest, a first-segment residue removing device, a paper machine off-machine water chute, a first-segment pressure screen and a paper machine mesh fluid pulp box, wherein the bleaching chemithermomechanical pulp chest after refiner and the mixed office waste paper deinked pulp chest after refiner are connected with the mixed pulp chest at the same time, a negative ion rubbish capture agent adding device is arranged between the bleaching chemithermomechanical pulp chest after refiner and the mixed office waste paper deinked pulp chest after refiner, and a negative ion rubbish capture agent adding device is arranged between the mixed office waste paper deinked pulp chest after refiner and the mixed pulp chest. According to the paper machine system, by additionally arranging the negative ion rubbish capture agent adding device in an existing paper machine system, negative ion rubbish in the system is captured in advance, the PCD, conductivity and charges of a paper machine pulp and off-machine water system are effectively reduced so that the stability of the paper machine system can be easily maintained, and the dosage of chemicals such as the neutral sizing agent can be easily reduced.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and relates to a paper machine system and a processing method thereof, in particular to a paper machine system for reducing the amount of sizing agent in pulp and a processing method thereof. Background technique [0002] Recycled cultural paper is produced by using waste paper as a raw material. The proportion of waste paper pulp in the raw material is 60-100%, so it is known as an environmentally friendly paper with low energy consumption and light pollution. The raw materials of recycled cultural paper are office paper, offset books and bookbinding paper and other types of urban waste paper with relatively good paper quality. [0003] In the papermaking process, internal pulp sizing is generally used. The purpose of sizing in paper pulp is to reduce the surface energy of paper to slow down or prevent the penetration and diffusion of liquid (mainly water) in paper. CN 104562846A discloses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H23/10D21H21/16D21H17/66
CPCD21H17/66D21H21/16D21H23/10
Inventor 张成飞林新阳颜利兵刘祥星
Owner DONGGUAN NINE DRAGONS PAPER IND