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Paper machine system and negative ion control method thereof

An anion control, paper machine technology, applied in the papermaking field, can solve the problems affecting the stability of the wet end, and achieve the effect of improving the running performance and the efficiency of chemical use, improving the efficiency and reducing the production volume

Inactive Publication Date: 2016-01-20
GOLD EAST PAPER JIANGSU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a paper machine system and its anion control method to solve the technical problem of affecting the stability of the wet end due to the high anion content of the pulp in the existing papermaking technology

Method used

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  • Paper machine system and negative ion control method thereof
  • Paper machine system and negative ion control method thereof
  • Paper machine system and negative ion control method thereof

Examples

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Embodiment 1

[0050] Use PAC to treat BC pulp line, the concentration of BC pulp is 4.5%, and the dosage of PAC is 0.8Kg / ton of pulp; OMC broken paper is treated with both PAC and PAE, the dosage of PAC is 0.5Kg / ton of pulp, and the dosage of PAE is 0.2Kg / ton of pulp. After treatment Then use a dispersant and a fixing agent to treat the broken paper, wherein the amount of the dispersant is 3Kg / ton of paper, the amount of the fixing agent is 0.5Kg / ton of paper, and the concentration of the broken paper is 3.5%. Use talcum powder, defoamer and PEI to treat white water. The amount of talcum powder is 3Kg / ton of paper, defoamer 0.2Kg / ton of paper, PEI 0.05Kg / ton of paper, and the concentration of white water is between 0.05-0.25. / Short fiber / mechanical pulp = 20 / 65 / 15 ratio with fresh pulp fiber, followed by fresh pulp accounting for 80%, OMC broke pulp accounting for 20% proportioning pulp, after the pulp is mixed evenly, add wet end cationic starch and Filler, dilute with white water after t...

Embodiment 2

[0055]Use PAC and PDADMAC to treat the anionic garbage of BC pulp, add PDADMAC to the BC pulper, the addition amount is 0.8Kg / ton of pulp, and add PAC0.2Kg / ton of pulp at the pump suction port of BC pulping tower. Add PA0.2Kg / ton broken paper at the outlet of the OMC broken paper tower pump, and add PEI1.5Kg / ton broken paper at the outlet of the OMC broken paper high-concentration slag remover. Then add a dispersant at the outlet of the pressure sieve, and add a fixative at the outlet of the deflaker to treat OMC broken paper. Among them, the amount of dispersant is 0.5Kg / ton of paper, and the amount of fixing agent is 5Kg / ton of paper. Treat white water with talc, defoamers, and organically modified PACs. The amount of talcum powder is 0.5Kg / ton of paper, the defoamer is 0.1Kg / ton of paper, PAC is 0.5Kg / ton of paper, the concentration of white water is between 0.05-0.25, and the fresh pulp is according to: long fiber / short fiber / mechanical pulp=20 / The ratio is 60 / 20, where...

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Abstract

The invention provides a negative ion control method of a paper machine system. The method comprises the step of adding a polymer of low molecular weight and high charge density into at least one of a mechanical pulp line, an off-machine coating (OMC) broken-paper recycling line and a paper machine wastewater circulation line of the paper machine system, so as to neutralize negative ions in a sizing agent. Through the paper machine system and the negative ion control method thereof, in the running process of a paper machine, the content of negative ions in the sizing agent is controlled in three points such as the mechanical pulp line (BC pulp line), the OMC broken-paper recycling line and the paper machine wastewater circulation line, so that the problem that the negative ion content is too high is solved in two manners of reducing the number of negative ions entering the system and treating the negative ions entering the system, not only can the content of negative ion garbage in a wastewater system of the paper machine be reduced effectively, and but also the requirement of positive ions is reduced. Moreover, cleaning of a wet part system can improve the stability of the wet part directly; furthermore, the running performance of the paper machine and the use efficiency of chemicals are improved, and the output of broken holes and broken paper in the running process of the paper machine is reduced.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a paper machine system and an anion control method thereof. Background technique [0002] The emergence of online coated paper machines has put forward more stringent requirements for the running performance of paper machines. The stability of the wet end system of the paper machine has a great influence on the operation, which also requires an increase in the stability of the wet end system. Chemicals, pulp, broken paper, white water, etc. in the wet end will affect the stability of the paper machine system, and system anionic waste has a great impact on wet end retention, ash retention, water filtration, and molding. In the papermaking process, the process points that are most likely to accumulate anionic waste generally include mechanical pulp (BC pulp) lines, OMC (Off Machine Coating, off-machine coating) broken paper recycling lines, and paper machine water circulation ...

Claims

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Application Information

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IPC IPC(8): D21H21/00D21H21/12D21H11/08D21H17/66D21H17/56D21H17/35D21H17/55D21H17/28
Inventor 董郑伟於旺盛闫培养陈杰刘春王炜
Owner GOLD EAST PAPER JIANGSU
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