阅读说明：本技术 造纸替代纤维乌本木渣浆工艺 (Process for making paper substituted fiber ebony slag pulp ) 是由 黎桂华 黎文彬 黎锡康 于 2020-10-21 设计创作，主要内容包括：一种造纸替代纤维乌本木渣浆工艺,包括以下步骤：将乌本木渣浆原料通过链板机上料到水力碎浆机碎解,经疏解机疏解后进入卸料池,将原生木浆、乌本木渣浆、美废长纤浆、美废短纤浆、国废长纤浆、国废短纤浆合理调配按一定比例送至面、芯、底纸机配浆池内混合均匀；(3)、将面、芯、底配配浆池的配浆分别通过管道转移到面、芯、底纸机成浆池内,面、芯、底纸机成浆池内的纸浆再经过网部、压部、前干部、施胶淀粉工艺处理、后干部、压光机、卷取、成品包装。本发明采用乌本木渣浆替代部分原生木浆和美废的情况下,通过优化调整干强剂、增强剂、施胶淀粉的用量,并有效的降低整体的浆料成本,变废为宝；美废用量少,减少对美废的依赖程度。(A process for preparing papermaking substitute fiber black wood residue pulp comprises the following steps: feeding the black wood residue pulp raw material to a hydrapulper through a chain plate machine for pulping, defibering the pulp by a defibering machine, then feeding the pulp into a discharge tank, reasonably blending virgin wood pulp, black wood residue pulp, American waste long fiber pulp, American waste short fiber pulp, national waste long fiber pulp and national waste short fiber pulp according to a certain proportion, feeding the blended pulp into a surface, core and bottom paper machine blending tank, and uniformly mixing; (3) transferring the prepared pulp in the dough, core and bottom pulp preparation pool to the dough, core and bottom paper machine pulp preparation pools through pipelines respectively, and carrying out the process treatment of paper pulp in the dough, core and bottom paper machine pulp preparation pools through a net part, a pressing part, a front dry part, sizing starch, a rear dry part, a calender, reeling and finished product packaging. According to the invention, under the condition that the black wood slag pulp replaces part of primary wood pulp and waste is treated, the use amounts of the dry strength agent, the reinforcing agent and the sizing starch are optimally adjusted, the overall pulp cost is effectively reduced, and waste is changed into valuable; the usage amount of the cosmetic waste is small, and the dependence on the cosmetic waste is reduced.)

1. A process for preparing papermaking substitute fiber black wood residue pulp is characterized by comprising the following steps:

(1) the utility model discloses a pulping machine, including two disc mills, the inlet of two disc mills is connected to the pond, with black wood residue thick liquid raw materials, through chain trigger material loading to hydraulic pulper schizolysis, gets into the dummy stock tank after the dismissal machine is dismissed, the entry of two disc mills is connected to the dummy stock tank, the exit linkage of two disc mills back pond, another mouthful of two disc mills is connected in the entry of two disc mills, and the good thick liquid of one-level after two disc mills handle flows into and grinds the back pond, and the good thick liquid of produced second grade flows back to the entry and once more grinds on two disc mills, makes the thick liquids can grind the circulation at the dish and make beating, black wood residue thick: 70-100 kg/ton paper;

(2) the virgin wood pulp, the ebony slag pulp, the American waste long fiber pulp, the American waste short fiber pulp, the national waste long fiber pulp and the national waste short fiber pulp are reasonably mixed according to a certain proportion and are sent into a pulp mixing tank of a dough making machine, a core making machine and a bottom paper machine to be uniformly mixed;

(3) transferring the prepared pulp of the surface, core and bottom prepared pulp preparation pool into the surface, core and bottom paper machine pulp preparation pools through pipelines respectively, and adding a reinforcing agent in the transferring process, wherein the reinforcing agent can be cationic polyacrylamide or cationic starch, and the addition amount of the reinforcing agent is as follows: 8-10 kg/ton paper;

(4) paper pulp in a pulp forming pool of a surface paper machine, a core paper machine and a bottom paper machine passes through a net part, a pressing part, a front part, sizing starch process treatment, a rear part, a calender, reeling and finished product packaging, wherein when entering the net part, a dry strength agent is added simultaneously, and the dry strength agent can be anionic polyacrylamide, carboxymethyl cellulose and carboxymethyl starch; the dry strength agent and the fiber can form a high polymer in hydrogen bond combination, the addition amount of the dry strength agent is 40-50 kg/ton paper, and the addition amount of sizing starch is 40-50 kg/ton paper.

2. The process for producing paper-making substitute fiber Uben wood pulp according to claim 1, wherein: in the step (2), the raw wood pulp and black wood slag pulp, the American waste long fiber pulp, the American waste short fiber pulp, the national waste long fiber pulp and the national waste short fiber pulp are 6 mass percent: 9: 30: 25: 20: 10.

Technical Field

The invention relates to a papermaking process, in particular to a process for replacing fiber ebony slag pulp in papermaking.

Background

The wood pulp is prepared from two raw materials, namely raw wood pulp and waste paper wood pulp, wherein the raw wood pulp has better bursting strength and performance, but the cost is higher, the consumption of forest, water and electricity is higher, and the pollutant emission is more. From the perspective of sustainable development, the trend in the industry is to reduce the use of raw wood pulp as much as possible, save biomass resources, and recycle renewable resources as much as possible. The waste paper wood pulp is an important renewable material, the papermaking production cost is low, and the problem of insufficient productivity still exists.

Disclosure of Invention

Therefore, aiming at the defects of the prior art, the invention aims to provide a novel process for making paper to replace the fiber Uben wood pulp.

A process for preparing papermaking substitute fiber black wood residue pulp comprises the following steps:

(1) the utility model discloses a pulping machine, including two disc mills, the inlet of two disc mills is connected to the pond, with black wood residue thick liquid raw materials, through chain trigger material loading to hydraulic pulper schizolysis, gets into the dummy stock tank after the dismissal machine is dismissed, the entry of two disc mills is connected to the dummy stock tank, the exit linkage of two disc mills back pond, another mouthful of two disc mills is connected in the entry of two disc mills, and the good thick liquid of one-level after two disc mills handle flows into and grinds the back pond, and the good thick liquid of produced second grade flows back to the entry and once more grinds on two disc mills, makes the thick liquids can grind the circulation at the dish and make beating, black wood residue thick: 70-100 kg/ton paper;

(2) the virgin wood pulp, the ebony slag pulp, the American waste long fiber pulp, the American waste short fiber pulp, the national waste long fiber pulp and the national waste short fiber pulp are reasonably mixed according to a certain proportion and are sent into a pulp mixing tank of a dough making machine, a core making machine and a bottom paper machine to be uniformly mixed;

(3) transferring the prepared pulp of the surface, core and bottom prepared pulp preparation pool into the surface, core and bottom paper machine pulp preparation pools through pipelines respectively, and adding a reinforcing agent in the transferring process, wherein the reinforcing agent can be cationic polyacrylamide or cationic starch, and the addition amount of the reinforcing agent is as follows: 8-10 kg/ton paper;

(4) paper pulp in a pulp forming pool of a surface paper machine, a core paper machine and a bottom paper machine passes through a net part, a pressing part, a front part, sizing starch process treatment, a rear part, a calender, reeling and finished product packaging, wherein when entering the net part, a dry strength agent is added simultaneously, and the dry strength agent can be anionic polyacrylamide, carboxymethyl cellulose and carboxymethyl starch; the dry strength agent and the fiber can form a high polymer in hydrogen bond combination, the addition amount of the dry strength agent is 40-50 kg/ton paper, and the addition amount of sizing starch is 40-50 kg/ton paper.

Further, in the step (2), the raw wood pulp and the black wood slag pulp, the American waste long fiber pulp, the American waste short fiber pulp, the national waste long fiber pulp and the national waste short fiber pulp are in a mass percentage of 6: 9: 30: 25: 20: 10.

the process for replacing the fiber black wood residue pulp for papermaking has the beneficial effects that: the invention optimizes the existing chemical addition process, ensures that the high-quality environment-friendly kraft liner board paper reaches the delivery standard and the customer requirement by optimizing and adjusting the dosage of the dry strength agent, the reinforcing agent and the sizing starch under the condition that the black wood slag pulp replaces part of primary wood pulp and cosmetic waste, effectively improves the bursting strength of the finished paper and ensures the quality of the finished paper by the reasonable chemical addition process; the problem of fiber bundles which are difficult to treat the ebony slag pulp is solved through technical transformation, so that the slag pulp can replace the original softwood pulp, the overall pulp cost is effectively reduced, and waste is changed into valuable; the usage amount of the cosmetic waste is small, and the dependence on the cosmetic waste is reduced.

Drawings

FIG. 1 is a process flow diagram of the novel papermaking-substituted fiber Uben wood pulp process of the present invention.

Detailed Description

In order to clearly show the technical scheme of the invention, the invention is further described with reference to the accompanying drawings.

As shown in fig. 1, the present invention provides a process for producing paper-making substitute fiber ebony wood slag pulp, which is used for producing finished paper, and comprises the following steps:

(1) feeding the black wood residue pulp raw material to a hydraulic pulper through a chain plate machine for pulping, defibering the pulp by a defibering machine, and then feeding the pulp into a discharge pond, wherein the discharge pond is connected with an inlet of a double-disc grinder, an outlet of the double-disc grinder is connected with a ground pond, the other port of the double-disc grinder is connected with the inlet of the double-disc grinder, first-stage good pulp processed by the double-disc grinder flows into the ground pond, and generated second-stage good pulp flows back to the inlet and is ground on the double-disc grinder again, so that the pulp can be circularly pulped in the disc grinder; under the prerequisite that does not damage ebony fibre nature and structure, further promote fibre brooming degree through the grinding to the wood pulp sediment that is difficult to handle, make originally difficult to decompose the tow obtain decomposing, the black wood sediment thick liquid addition: 70-100 kg/ton paper;

(2) 6% of virgin wood pulp, 9% of Wuben wood residue pulp, 30% of American waste long fiber pulp, 25% of American waste short fiber pulp, 20% of national waste long fiber pulp and 10% of national waste short fiber pulp are reasonably mixed according to a certain proportion and are sent into a pulp mixing tank of a face, core and bottom paper machine to be uniformly mixed, so that the bonding strength and the dewatering capacity among fibers are ensured, and the high-quality environment-friendly kraft liner board pulp on the paper surface, the core and the bottom layer is obtained;

(3) transferring the prepared pulp of the surface, core and bottom prepared pulp preparation pool into the surface, core and bottom paper machine pulp preparation pools through pipelines respectively, and adding a reinforcing agent in the transferring process, wherein the reinforcing agent can be cationic polyacrylamide or cationic starch, and the addition amount of the reinforcing agent is as follows: 8-10 kg/ton paper;

(4) paper pulp in a pulp forming pool of a surface paper machine, a core paper machine and a bottom paper machine passes through a net part, a pressing part, a front part, sizing starch process treatment, a rear part, a calender, reeling and finished product packaging, wherein when entering the net part, a dry strength agent is added simultaneously, and the dry strength agent can be anionic polyacrylamide, carboxymethyl cellulose and carboxymethyl starch; the dry strength agent and the fiber can form a hydrogen bond-combined high polymer to improve the binding force and the strength of the fiber, and the addition amount of the dry strength agent is as follows: 40-50 kg/ton paper, sizing starch addition: 40-50 kg/ton paper.

The process for replacing the fiber black wood residue pulp for papermaking has the beneficial effects that: the invention optimizes the existing chemical addition process, ensures that the high-quality environment-friendly kraft liner board paper reaches the delivery standard and the customer requirement by optimizing and adjusting the dosage of the dry strength agent, the reinforcing agent and the sizing starch under the condition that the black wood slag pulp replaces part of primary wood pulp and cosmetic waste, effectively improves the bursting strength of the finished paper and ensures the quality of the finished paper by the reasonable chemical addition process; the problem of fiber bundles which are difficult to treat the ebony slag pulp is solved through technical transformation, so that the slag pulp can replace the original softwood pulp, the overall pulp cost is effectively reduced, and waste is changed into valuable; the usage amount of the cosmetic waste is small, and the dependence on the cosmetic waste is reduced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements, etc. made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of the present invention.