CN107177996B - A kind of preprocess method of bleached pulp - Google Patents

A kind of preprocess method of bleached pulp Download PDF

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Publication number
CN107177996B
CN107177996B CN201710448887.4A CN201710448887A CN107177996B CN 107177996 B CN107177996 B CN 107177996B CN 201710448887 A CN201710448887 A CN 201710448887A CN 107177996 B CN107177996 B CN 107177996B
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parts
immersion liquid
bleached pulp
weight
preprocess method
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CN107177996A (en
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古金荣
古丰铭
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Guangxi Jin Rong Paper Co Ltd
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Guangxi Jin Rong Paper Co Ltd
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00Fibrous raw materials or their mechanical treatment
    • D21B1/02Pretreatment of the raw materials by chemical or physical means
    • D21B1/021Pretreatment of the raw materials by chemical or physical means by chemical means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/34Organic impregnating agents
    • B27K3/50Mixtures of different organic impregnating agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/52Impregnating agents containing mixtures of inorganic and organic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/001Heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/003Treating of wood not provided for in groups B27K1/00, B27K3/00 by using electromagnetic radiation or mechanical waves
    • B27K5/0065Ultrasonic treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K9/00Chemical or physical treatment of reed, straw, or similar material
    • B27K9/002Cane, bamboo
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K2200/00Wooden materials to be treated
    • B27K2200/15Pretreated particles or fibres

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)

Abstract

The invention discloses a kind of preprocess methods of bleached pulp, the following steps are included: S1: sinocalamus latiflorus being cut into sinocalamus latiflorus piece and is crushed, gained crushed material is delivered in primary pretreatment immersion liquid A, the primary pretreatment immersion liquid A, including following raw material: alkyl phenol polyoxyethylene ether, triethanolamine, sodium alkyl benzene sulfonate, potassium lignosulfonate, lauric acid, water, immersion 26-40min is carried out under ultrasonic wave effect, is then filtered, leaching material A is obtained;S2: leaching material A made from step S1 is delivered in secondary pretreatment immersion liquid B, the secondary pretreatment immersion liquid B includes following raw material: percarbamide, potassium hydroxide, 1,3- diketone, vanadic anhydride, water, boiling is carried out at being 142-160 DEG C in temperature, then it filters, leaching material B is obtained, preprocessing process is completed.It is higher using the brightness of the toilet paper of gained bleached pulp subsequent production, tensile index, pliability after present invention pretreatment, and do not have any stimulation or adverse reaction to human skin.

Description

A kind of preprocess method of bleached pulp
Technical field
The invention belongs to pulp technology for making paper, and in particular to a kind of preprocess method of bleached pulp.
Background technique
The production method of paper pulp mainly includes the productions stream such as chemical method, semichemical method, Mechanical Method and chemical mechanical pulping at present Journey.Wherein chemical pulping is occupied an leading position among current numerous pulping process.Claim by paper pulp made from chemical method boiling For true qualities paper pulp, true qualities paper pulp limits its application since whiteness is lower, and true qualities paper pulp will could generally give birth to after bleaching Produce the paper kind of higher level.
Paper for daily use, particularly toilet paper are a kind of common daily consumption articles, still, in psychologically to whiteness It needs and the demand to some physical indexs, generallys use the pulp manufacture based on bleached wood pulp.Even if being starched using herb Prepare toilet paper, also all use bleached pulp, however gained paper pulp yield and whiteness are still lower, the brightness of toilet paper, tensile index, Pliability is not also high.
With the continuous expansion of paper industry, constantly opening up for pulp applications is wide, originally the wood as main paper making raw material Gradually supply falls short of demand for material, and forest is caused excessively to be cut down, and influences ecological environment, therefore, it is necessary to seek new raw material substituent.
Sinocalamus latiflorus (Dendrocalamus latiflorus Munro) is that south China cultivates most wide one of bamboo kind, is standing grain Undergraduate course (Poaceae) Bambusoideae (Bambusoideae) Dendrocalamus (Dendrocalamus) large-scale sympodial bamboo kind, main point Be distributed in the provinces and regions such as Fujian, Taiwan, Guangdong and Guangxi Provinces, Yunnan, Hainan, Sichuan, the Guizhou middle and south, for edible, material use, Ye Yong, water and soil conservation, The multipurposes bamboo kinds such as greening is ornamental, to produce bamboo shoot or do based on pulpwood.Sinocalamus latiflorus growth is fast, the bamboo shoot phase is long, yield is high, bamboo shoot are of fine quality good, Sinocalamus latiflorus fast growing, widely used, primary plant utilizes for many years, is that a kind of economic value is high, excellent calculation material profitable on ecology Dual-purpose bamboo kind, economic benefit, ecological benefits and social benefit Three benefits are significant.
Therefore be conducive to avoid result in forest and excessively cut down as wood raw material is replaced using artificial growth sinocalamus latiflorus, influence Ecological environment.
Summary of the invention
A kind of preprocess method of bleached pulp provided by the invention, to solve how to improve sinocalamus latiflorus paper pulp yield and whiteness, The problem of improving production toilet paper quality.
In order to solve the above technical problems, the present invention uses following technical matters:
A kind of preprocess method of bleached pulp, comprising the following steps:
S1: being cut into sinocalamus latiflorus piece for sinocalamus latiflorus and crush, and gained crushed material is delivered in primary pretreatment immersion liquid A, described Primary pretreatment immersion liquid A is as unit of parts by weight, including following raw material: 6-10 parts of alkyl phenol polyoxyethylene ether, triethanolamine 0.4-0.8 parts, 0.6-1.2 parts of sodium alkyl benzene sulfonate, 0.5-1 parts of potassium lignosulfonate, 0.7-1.4 parts of lauric acid, water 45-95 Part, immersion 26-40min is carried out under ultrasonic wave effect, is then filtered, leaching material A is obtained;
S2: leaching material A made from step S1 is delivered in secondary pretreatment immersion liquid B, and the immersion liquid B is single with parts by weight Position, including following raw material: 12-25 parts of percarbamide, 3-5 parts of potassium hydroxide, 0.4-0.6 parts of 1,3- diketone, vanadic anhydride 0.1-0.2 parts, 40-156 parts of water carry out boiling at being 142-160 DEG C in temperature, then filter, and obtain leaching material B, complete preparation The preprocessing process of bleached pulp.
Further, the size of sinocalamus latiflorus piece described in step S1 is 20-30mm × 2.8-3.7mm × 1.2-2.5mm.
Further, the ratio between sinocalamus latiflorus crushed material weight described in step S1 and primary pretreatment immersion liquid A volume are 1:1.5- 3.5。
Further, the ratio between sinocalamus latiflorus crushed material weight and primary pretreatment immersion liquid A volume are 1:2.5.
Further, immersion liquid A described in step S1 is as unit of parts by weight, including following raw material: alkylphenol-polyethenoxy 8 parts of ether, 0.6 part of triethanolamine, 0.9 part of sodium alkyl benzene sulfonate, 0.8 part of potassium lignosulfonate, 1 part of lauric acid, 70 parts of water.
Further, ultrasonic power described in step S1 is 30-50W, and temperature is 43-48 DEG C.
Further, the ratio between the A weight and secondary pretreatment immersion liquid B volume of leaching material described in step S2 are 1:5.6-12.3.
Further, leaching material the ratio between the A weight and secondary pretreatment immersion liquid B volume are 1:9.2.
Further, immersion liquid B described in step S2 is as unit of parts by weight, including following raw material: 25 parts of percarbamide, hydrogen 5 parts of potassium oxide, 0.6 part of 1,3- diketone, 0.2 part of vanadic anhydride, 156 parts of water.
Further, the time of boiling described in step S2 is 1.5-2h.
The invention has the following advantages:
(1) addition of percarbamide, 1,3- diketone, vanadic anhydride plays synergistic effect, improves paper pulp yield And whiteness;
(2) alkyl phenol polyoxyethylene ether, triethanolamine, sodium alkyl benzene sulfonate, potassium lignosulfonate, lauric add Synergistic effect has been arrived, paper pulp yield and whiteness are improved;
(3) brightness of the toilet paper of gained bleached pulp subsequent production, tensile index, pliability after present invention pretreatment are utilized It is higher, and do not have any stimulation or adverse reaction to human skin.
[specific embodiment]
It to facilitate a better understanding of the present invention, is illustrated by following embodiment, these embodiments belong to of the invention Protection scope, but do not limit the scope of the invention.
In embodiment, the preparation method of the toilet paper of bleaching process preparation is utilized, comprising the following steps:
S1: being cut into sinocalamus latiflorus having a size of 20-30mm × 2.8-3.7mm × 1.2-2.5mm sinocalamus latiflorus piece and crush, institute It obtains crushed material to be delivered in primary pretreatment immersion liquid A, the ratio between the sinocalamus latiflorus crushed material weight and primary pretreatment immersion liquid A volume are 1:1.5-3.5, the primary pretreatment immersion liquid A is as unit of parts by weight, including following raw material: alkyl phenol polyoxyethylene ether 6-10 Part, 0.4-0.8 parts of triethanolamine, 0.6-1.2 parts of sodium alkyl benzene sulfonate, 0.5-1 parts of potassium lignosulfonate, lauric acid 0.7-1.4 Part, 45-95 parts of water are 30-50W in ultrasonic power, and temperature is to carry out immersion 26-40min at 43-48 DEG C, then filters, obtains Material A must be soaked;
S2: leaching material A made from step S1 is delivered in secondary pretreatment immersion liquid B, the leaching material A weight and secondary pre- place Managing the ratio between immersion liquid B volume is 1:5.6-12.3, and the secondary pretreatment immersion liquid B is as unit of parts by weight, including following raw material: mistake 12-25 parts of carbamide, 3-5 parts of potassium hydroxide, 0.4-0.6 parts of 1,3- diketone, 0.1-0.2 parts of vanadic anhydride, 40-156 parts of water, Boiling 1.5-2h is carried out at being 142-160 DEG C in temperature, is then filtered, leaching material B is obtained, completion prepares the pretreated of bleached pulp Journey;
S3: leaching material B made from step S2 is washed with 60-80 DEG C of hot water, then screens, bleach, bleaching is made Slurry;
S4: bleached pulp made from step S3 is subjected to defibrination again, screened stock is made;
S5: screened stock made from step S4 is subjected to decontamination degassing, is then put into head box and is squeezed after screening the pulp, then connect Drying, press polish, batch, finished product sinocalamus latiflorus body paper;
S6: finished product sinocalamus latiflorus body paper made from step S5 is subjected to rewinding, cuts, pack, finished product toilet paper.
Embodiment 1
A kind of preparation method of the toilet paper using bleaching process preparation, comprising the following steps:
S1: sinocalamus latiflorus is cut into having a size of 22mm × 3.2mm × 1.3mm sinocalamus latiflorus piece and is crushed, gained crushed material is defeated It send into primary pretreatment immersion liquid A, the ratio between the sinocalamus latiflorus crushed material weight and primary pretreatment immersion liquid A volume are 1:1.6, described Primary pretreatment immersion liquid A is as unit of parts by weight, including following raw material: 6 parts of alkyl phenol polyoxyethylene ether, 0.4 part of triethanolamine, 0.6 part of sodium alkyl benzene sulfonate, 0.5 part of potassium lignosulfonate, 0.7 part of lauric acid, 45 parts of water are 30W, temperature in ultrasonic power It is to carry out immersion 40min at 43 DEG C, then filters, obtains leaching material A;
S2: leaching material A made from step S1 is delivered in secondary pretreatment immersion liquid B, the leaching material A weight and secondary pre- place Managing the ratio between immersion liquid B volume is 1:5.6, and the secondary pretreatment immersion liquid B is as unit of parts by weight, including following raw material: crossing phosphinylidyne 12 parts of amine, 3 parts of potassium hydroxide, 0.46 part of 1,3- diketone, 0.1 part of vanadic anhydride, 40 parts of water carry out at being 142 DEG C in temperature Boiling 2h, is then filtered, and obtains leaching material B, and completion prepares the preprocessing process of bleached pulp;
S3: leaching material B made from step S2 is washed with 70 DEG C of hot water, then screens, bleach, bleached pulp is made;
S4: bleached pulp made from step S3 is subjected to defibrination again, screened stock is made;
S5: screened stock made from step S4 is subjected to decontamination degassing, is then put into head box and is squeezed after screening the pulp, then connect Drying, press polish, batch, finished product sinocalamus latiflorus body paper;
S6: finished product sinocalamus latiflorus body paper made from step S5 is subjected to rewinding, cuts, pack, finished product toilet paper.
Embodiment 2
A kind of preparation method of the toilet paper using bleaching process preparation, comprising the following steps:
S1: sinocalamus latiflorus is cut into having a size of 29mm × 3.6mm × 2.4mm sinocalamus latiflorus piece and is crushed, gained crushed material is defeated It send into primary pretreatment immersion liquid A, the ratio between the sinocalamus latiflorus crushed material weight and primary pretreatment immersion liquid A volume are 1:3.4, described Primary pretreatment immersion liquid A is as unit of parts by weight, including following raw material: 10 parts of alkyl phenol polyoxyethylene ether, triethanolamine 0.8 Part, 1.2 parts of sodium alkyl benzene sulfonate, 1 part of potassium lignosulfonate, 1.4 parts of lauric acid, 95 parts of water are 50W, temperature in ultrasonic power Degree is to carry out immersion 26min at 48 DEG C, is then filtered, and leaching material A is obtained;
S2: leaching material A made from step S1 is delivered in secondary pretreatment immersion liquid B, the leaching material A weight and secondary pre- place Managing the ratio between immersion liquid B volume is 1:12.3, and the secondary pretreatment immersion liquid B is as unit of parts by weight, including following raw material: crossing phosphinylidyne 25 parts of amine, 5 parts of potassium hydroxide, 0.6 part of 1,3- diketone, 0.2 part of vanadic anhydride, 156 parts of water carry out at being 160 DEG C in temperature Boiling 1.5h, is then filtered, and obtains leaching material B, and completion prepares the preprocessing process of bleached pulp;
S3: leaching material B made from step S2 is washed with 60 DEG C of hot water, then screens, bleach, bleached pulp is made;
S4: bleached pulp made from step S3 is subjected to defibrination again, screened stock is made;
S5: screened stock made from step S4 is subjected to decontamination degassing, is then put into head box and is squeezed after screening the pulp, then connect Drying, press polish, batch, finished product sinocalamus latiflorus body paper;
S6: finished product sinocalamus latiflorus body paper made from step S5 is subjected to rewinding, cuts, pack, finished product toilet paper.
Embodiment 3
A kind of preparation method of the toilet paper using bleaching process preparation, comprising the following steps:
S1: sinocalamus latiflorus is cut into having a size of 26mm × 6.2mm × 1.8mm sinocalamus latiflorus piece and is crushed, gained crushed material is defeated It send into primary pretreatment immersion liquid A, the ratio between the sinocalamus latiflorus crushed material weight and primary pretreatment immersion liquid A volume are 1:2.5, described Primary pretreatment immersion liquid A is as unit of parts by weight, including following raw material: 8 parts of alkyl phenol polyoxyethylene ether, 0.6 part of triethanolamine, 0.9 part of sodium alkyl benzene sulfonate, 0.8 part of potassium lignosulfonate, 1 part of lauric acid, 70 parts of water are 40W in ultrasonic power, and temperature is Immersion 33min is carried out at 46 DEG C, is then filtered, and leaching material A is obtained;
S2: leaching material A made from step S1 is delivered in secondary pretreatment immersion liquid B, the leaching material A weight and secondary pre- place Managing the ratio between immersion liquid B volume is 1:9.2, and the secondary pretreatment immersion liquid B is as unit of parts by weight, including following raw material: crossing phosphinylidyne 18 parts of amine, 4 parts of potassium hydroxide, 0.5 part of 1,3- diketone, 0.15 part of vanadic anhydride, 100 parts of water carry out at being 151 DEG C in temperature Boiling 1.8h, is then filtered, and obtains leaching material B, and completion prepares the preprocessing process of bleached pulp;
S3: leaching material B made from step S2 is washed with 80 DEG C of hot water, then screens, bleach, bleached pulp is made;
S4: bleached pulp made from step S3 is subjected to defibrination again, screened stock is made;
S5: screened stock made from step S4 is subjected to decontamination degassing, is then put into head box and is squeezed after screening the pulp, then connect Drying, press polish, batch, finished product sinocalamus latiflorus body paper;
S6: finished product sinocalamus latiflorus body paper made from step S5 is subjected to rewinding, cuts, pack, finished product toilet paper.
Comparative example 1
After sinocalamus latiflorus is cut into the crushing of sinocalamus latiflorus piece, impregnates, but be fed directly to secondary pre- without primary pretreatment immersion liquid A It handles immersion liquid B to impregnate, other preparation processes are identical as the preparation process of embodiment 3.
Comparative example 2
The secondary pretreatment immersion liquid B is as unit of parts by weight, including following raw material: 4 parts of potassium hydroxide, 1,3- diketone 0.5 part, 0.15 part of vanadic anhydride, 100 parts of water, other preparation processes are identical as the preparation process of comparative example 1.
Comparative example 3
The secondary pretreatment immersion liquid B is as unit of parts by weight, including following raw material: 18 parts of percarbamide, potassium hydroxide 4 Part, 0.15 part of vanadic anhydride, 100 parts of water, other preparation processes are identical as the preparation process of comparative example 1.
Comparative example 4
The secondary pretreatment immersion liquid B is as unit of parts by weight, including following raw material: 18 parts of percarbamide, potassium hydroxide 4 Part, 0.5 part of 1,3- diketone, 100 parts of water, other preparation processes are identical as the preparation process of comparative example 1.
Comparative example 5
After sinocalamus latiflorus is cut into the crushing of sinocalamus latiflorus piece, only by primary pretreatment immersion liquid A immersion, and soaked without secondary pretreatment Liquid B impregnates, the preparation process of other preparation processes and embodiment 3 are essentially identical.
Comparative example 6
The primary pretreatment immersion liquid A is as unit of parts by weight, including following raw material: 8 parts of alkyl phenol polyoxyethylene ether, three 0.6 part of ethanol amine, 70 parts of water, other preparation processes are identical as the preparation process of comparative example 5.
Comparative example 7
The primary pretreatment immersion liquid A is as unit of parts by weight, including following raw material: 0.9 part of sodium alkyl benzene sulfonate, wooden 0.8 part of plain potassium sulfonate, 1 part of lauric acid, 70 parts of water, other preparation processes are identical as the preparation process of comparative example 5.
Bleached pulp is prepared using the pretreating process of embodiment 1-3 and comparative example 1-7, detects paper pulp yield and white respectively Degree, as a result as shown in the table.
Experimental project Paper pulp yield, % Whiteness, %ISO
Embodiment 1 63.04 56.71
Embodiment 2 64.47 57.42
Embodiment 3 66.23 59.35
Comparative example 1 58.25 52.74
Comparative example 2 54.78 50.31
Comparative example 3 57.21 51.95
Comparative example 4 56.06 51.12
Comparative example 5 51.31 47.15
Comparative example 6 47.01 43.26
Comparative example 7 48.52 43.91
Can by comparative example 1-4 it is found that percarbamide, 1,3- diketone, vanadic anhydride is not added in secondary pretreatment immersion liquid B Paper pulp yield and whiteness are reduced, this is because percarbamide, which will be slow, releases hydrogen peroxide, the hydrogen peroxide released and wood Element reaction is conducive to improve paper pulp yield and whiteness;1,3- diketone can play chelation;Vanadic anhydride plays the work of catalysis With;Know that percarbamide, 1,3- diketone, vanadic anhydride add by the paper pulp yield and whiteness of example 3 and comparative example 1-4 simultaneously Add and play synergistic effect, improves paper pulp yield and whiteness.
By comparative example 5-7 it is found that alkyl phenol polyoxyethylene ether, triethanolamine, alkylbenzene once is not added in pretreatment immersion liquid A Sodium sulfonate, potassium lignosulfonate, lauric acid can reduce paper pulp yield and whiteness, this is because alkyl phenol polyoxyethylene ether, three Ethanol amine is wetting agent, plays good humidification;Sodium alkyl benzene sulfonate, potassium lignosulfonate, lauric acid play sinocalamus latiflorus Crushed material surface-active action;The alkylphenol-polyethenoxy known to the paper pulp yield and whiteness of example 3 and comparative example 5-7 simultaneously Ether, triethanolamine, sodium alkyl benzene sulfonate, potassium lignosulfonate, lauric addition play synergistic effect, improve paper pulp Yield and whiteness.
Finished product toilet paper is prepared using the bleached pulp of embodiment 1-3 and comparative example 1-7 being prepared into, respectively detect brightness, Tensile index, pliability, as a result as shown in the table.
Experimental project Brightness Tensile index, Nm/g Pliability, mN
Embodiment 1 80.4 11.34 186.50
Embodiment 2 81.5 11.81 190.29
Embodiment 3 83.6 12.10 192.49
Comparative example 1 76.8 10.08 181.48
Comparative example 2 75.4 9.40 176.72
Comparative example 3 76.7 9.73 179.59
Comparative example 4 75.8 9.46 178.71
Comparative example 5 74.6 9.25 174.26
Comparative example 6 69.5 8.91 170.48
Comparative example 7 71.9 9.05 171.43
Can by comparative example 1-4 it is found that percarbamide, 1,3- diketone, vanadic anhydride is not added in secondary pretreatment immersion liquid B Reduce the brightness of toilet paper, tensile index, pliability release this is because percarbamide, which will be slow, releases hydrogen peroxide Hydrogen peroxide and lignin reaction;1,3- diketone can play chelation;Vanadic anhydride plays the role of catalysis;Simultaneously by reality The brightness of the life paper of example 3 and comparative example 1-4, tensile index, percarbamide known to pliability, 1,3- diketone, vanadic anhydride Addition plays synergistic effect, improves brightness, the tensile index, pliability of toilet paper.
By comparative example 5-7 it is found that alkyl phenol polyoxyethylene ether, triethanolamine, alkylbenzene once is not added in pretreatment immersion liquid A Sodium sulfonate, potassium lignosulfonate, lauric acid can reduce the brightness of toilet paper, tensile index, pliability, this is because alkyl phenol Polyoxyethylene ether, triethanolamine are wetting agent, play good humidification;Sodium alkyl benzene sulfonate, potassium lignosulfonate, the moon Cinnamic acid plays sinocalamus latiflorus crushed material surface-active action;Simultaneously by the brightness of example 3 and the toilet paper of comparative example 5-7, tensile index, Alkyl phenol polyoxyethylene ether known to pliability, sodium alkyl benzene sulfonate, potassium lignosulfonate, lauric is added triethanolamine Synergistic effect has been arrived, brightness, the tensile index, pliability of toilet paper are improved.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that Specific implementation of the invention is only limited to these instructions, and for person of an ordinary skill in the technical field, is not being departed from Under the premise of present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention by being submitted Claims determine scope of patent protection.

Claims (10)

1. a kind of preprocess method of bleached pulp, it is characterised in that: the following steps are included:
S1: being cut into sinocalamus latiflorus piece for sinocalamus latiflorus and crush, and gained crushed material is delivered in primary pretreatment immersion liquid A, described primary Immersion liquid A is pre-processed as unit of parts by weight, including following raw material: 6-10 parts of alkyl phenol polyoxyethylene ether, triethanolamine 0.4-0.8 Part, 0.6-1.2 parts of sodium alkyl benzene sulfonate, 0.5-1 parts of potassium lignosulfonate, 0.7-1.4 parts of lauric acid, 45-95 parts of water, in ultrasound Immersion 26-40min is carried out under wave effect, is then filtered, leaching material A is obtained;
S2: leaching material A made from step S1 is delivered in secondary pretreatment immersion liquid B, the immersion liquid B is as unit of parts by weight, packet Include following raw material: 12-25 parts of percarbamide, 3-5 parts of potassium hydroxide, 0.4-0.6 parts of 1,3- diketone, vanadic anhydride 0.1-0.2 Part, 40-156 parts of water carry out boiling at being 142-160 DEG C in temperature, then filter, and obtain leaching material B, and completion prepares bleached pulp Preprocessing process.
2. the preprocess method of bleached pulp according to claim 1, it is characterised in that: the ruler of sinocalamus latiflorus piece described in step S1 Very little is 20-30mm × 2.8-3.7mm × 1.2-2.5mm.
3. the preprocess method of bleached pulp according to claim 1, it is characterised in that: sinocalamus latiflorus crushed material described in step S1 The ratio between weight and primary pretreatment immersion liquid A volume are 1:1.5-3.5.
4. the preprocess method of bleached pulp according to claim 3, it is characterised in that: sinocalamus latiflorus crushed material weight and primary pre- Handling the ratio between immersion liquid A volume is 1:2.5.
5. the preprocess method of bleached pulp according to claim 1, it is characterised in that: immersion liquid A described in step S1 is with weight Amount part is unit, including following raw material: 8 parts of alkyl phenol polyoxyethylene ether, 0.6 part of triethanolamine, 0.9 part of sodium alkyl benzene sulfonate, 0.8 part of potassium lignosulfonate, 1 part of lauric acid, 70 parts of water.
6. the preprocess method of bleached pulp according to claim 1, it is characterised in that: ultrasonic power described in step S1 For 30-50W, temperature is 43-48 DEG C.
7. the preprocess method of bleached pulp according to claim 1, it is characterised in that: the A weight of leaching material described in step S2 It is 1:5.6-12.3 with the ratio between secondary pretreatment immersion liquid B volume.
8. the preprocess method of bleached pulp according to claim 7, it is characterised in that: leaching material A weight with it is secondary pre- Handling the ratio between immersion liquid B volume is 1:9.2.
9. the preprocess method of bleached pulp according to claim 1, it is characterised in that: immersion liquid B described in step S2 is with weight Amount part is unit, including following raw material: 25 parts of percarbamide, 5 parts of potassium hydroxide, 0.6 part of 1,3- diketone, vanadic anhydride 0.2 Part, 156 parts of water.
10. the preprocess method of bleached pulp according to claim 1, it is characterised in that: boiling described in step S2 when Between be 1.5-2h.
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CN107558288A (en) * 2017-09-30 2018-01-09 广西金荣纸业有限公司 One kind utilizes bleaching process production high-strength corrugated paper coagulation liquid and its application
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CN107675547A (en) * 2017-09-30 2018-02-09 广西金荣纸业有限公司 Bleached pulp preparation technology is used in a kind of high-strength corrugated paper production
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