CN107338666B - A kind of method that sinocalamus latiflorus prepares bleached pulp - Google Patents
A kind of method that sinocalamus latiflorus prepares bleached pulp Download PDFInfo
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- CN107338666B CN107338666B CN201710448882.1A CN201710448882A CN107338666B CN 107338666 B CN107338666 B CN 107338666B CN 201710448882 A CN201710448882 A CN 201710448882A CN 107338666 B CN107338666 B CN 107338666B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/10—Physical methods for facilitating impregnation
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/222—Use of compounds accelerating the pulping processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention discloses a kind of method that sinocalamus latiflorus prepares bleached pulp, belong to pulp technology for making paper, the true qualities paper pulp be by secondary pretreatment, washing, screening, bleaching and etc. made of.Bleached pulp paper pulp yield prepared by the present invention and whiteness are high；The brightness of the toilet paper of subsequent production, tensile index, pliability are higher, and do not have any stimulation or adverse reaction to human skin.
Description
[technical field]
The invention belongs to pulp technology for making paper, and in particular to a kind of method that sinocalamus latiflorus prepares 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, is distributed mainly on
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, greening
The multipurposes bamboo kind such as 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 is 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]
The method that a kind of sinocalamus latiflorus provided by the invention prepares bleached pulp, to solve how to improve sinocalamus latiflorus paper pulp yield and whiteness
The problem of.
In order to solve the above technical problems, the present invention uses following technical matters:
A kind of method that sinocalamus latiflorus prepares 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: 4-8 parts of alkyl phenol polyoxyethylene ether, triethanolamine 0.3-
0.6 part, 0.5-1 parts of stearic acid, 0.4-1.2 parts of oleic acid, 0.8-1.5 parts of lauric acid, 42-90 parts of water, ultrasonic wave effect under into
Row impregnates 26-40min, then filters, and obtains leaching material A；
S2: leaching material A made from step S1 is delivered in secondary pretreatment immersion liquid B, the secondary pretreatment immersion liquid B is with weight
Amount part is unit, including following raw material: 10-20 parts of percarbamide, 4-6 parts of potassium hydroxide, 0.3-0.5 parts of amino carboxylic acid, five oxygen
Change 0.1-0.2 parts of two vanadium, 35-150 parts of water, carry out boiling at being 142-160 DEG C in temperature, then filter, obtains leaching material B；
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.
Further, the size of sinocalamus latiflorus piece described in step S1 is 20-30 × 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 the 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
6 parts of ether, 0.5 part of triethanolamine, 0.8 part of stearic acid, 0.8 part of oleic acid, 1.2 parts of lauric acid, 66 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, the time of boiling described in step S2 is 1.5-2h.
Further, washing described in step S3 to pH value is 6.8-7.2.
The invention has the following advantages:
(1) addition of percarbamide, amino carboxylic acid, vanadic anhydride plays synergistic effect, improves paper pulp yield
And whiteness；
(2) alkyl phenol polyoxyethylene ether, triethanolamine, stearic acid, oleic acid, lauric addition play synergistic effect,
Improve paper pulp yield and whiteness；
(3) brightness of the toilet paper of prepared by the method bleached pulp subsequent production, tensile index, pliability are 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 20-30 × 2.8-3.7mm × 1.2-2.5mm sinocalamus latiflorus piece and crush, gained
Crushed material is delivered in primary pretreatment immersion liquid A, and 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: 4-8 parts of alkyl phenol polyoxyethylene ether,
0.3-0.6 parts of triethanolamine, 0.5-1 parts of stearic acid, 0.4-1.2 parts of oleic acid, 0.8-1.5 parts of lauric acid, 42-90 parts of water, super
Acoustic power is 30-50W, and temperature is to carry out immersion 26-40min at 43-48 DEG C, is then filtered, and 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 1:5.6-12.3, and the secondary pretreatment immersion liquid B is as unit of parts by weight, including following raw material: mistake
10-20 parts of carbamide, 4-6 parts of potassium hydroxide, 0.3-0.5 parts of amino carboxylic acid, 0.1-0.2 parts of vanadic anhydride, 35-150 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；
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: being cut into sinocalamus latiflorus having a size of 22 × 3.2mm × 1.3mm sinocalamus latiflorus piece and crush, the conveying of gained crushed material
Into once pretreatment immersion liquid A, the sinocalamus latiflorus crushed material weight and primary the ratio between the immersion liquid A volume that pre-processes is 1:1.6, and described one
Secondary pretreatment immersion liquid A is as unit of parts by weight, including following raw material: 4 parts of alkyl phenol polyoxyethylene ether, 0.3 part of triethanolamine, hard
0.5 part of resin acid, 0.4 part of oleic acid, 0.8 part of lauric acid, 42 parts of water are 30W in ultrasonic power, and temperature is to be impregnated at 43 DEG C
40min is then filtered, and 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
10 parts of amine, 4 parts of potassium hydroxide, 0.3 part of amino carboxylic acid, 0.1 part of vanadic anhydride, 35 parts of water are steamed at being 142 DEG C in temperature
2h is boiled, is then filtered, leaching material B is obtained；
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: being cut into sinocalamus latiflorus having a size of 29 × 3.6mm × 2.4mm sinocalamus latiflorus piece and crush, the conveying of gained crushed material
Into once pretreatment immersion liquid A, the sinocalamus latiflorus crushed material weight and primary the ratio between the immersion liquid A volume that pre-processes is 1:3.4, and described one
Secondary 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, hard
1 part of resin acid, -1.2 parts of oleic acid, 1.5 parts of lauric acid, 90 parts of water are 50W in ultrasonic power, and temperature is to be impregnated at 48 DEG C
26min is then filtered, and 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 1:12.3, and the secondary pretreatment immersion liquid B is as unit of parts by weight, including following raw material: crossing phosphinylidyne
20 parts of amine, 6 parts of potassium hydroxide, 0.5 part of amino carboxylic acid, 0.2 part of vanadic anhydride, 150 parts of water carry out at being 160 DEG C in temperature
Boiling 1.5h, is then filtered, and obtains leaching material B；
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: being cut into sinocalamus latiflorus having a size of 26 × 6.2mm × 1.8mm sinocalamus latiflorus piece and crush, the conveying of gained crushed material
Into once pretreatment immersion liquid A, the sinocalamus latiflorus crushed material weight and primary the ratio between the immersion liquid A volume that pre-processes is 1:2.5, and described one
Secondary pretreatment immersion liquid A is as unit of parts by weight, including following raw material: 6 parts of alkyl phenol polyoxyethylene ether, 0.5 part of triethanolamine, hard
0.7 part of resin acid, 0.8 part of oleic acid, 1.2 parts of lauric acid, 67 parts of water are 40W in ultrasonic power, and temperature is to be impregnated at 46 DEG C
33min is then filtered, and 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 1:9.2, and the secondary pretreatment immersion liquid B is as unit of parts by weight, including following raw material: crossing phosphinylidyne
16 parts of amine, 5 parts of potassium hydroxide, 0.4 part of amino carboxylic acid, 0.1 part of vanadic anhydride, 92 parts of water are steamed at being 151 DEG C in temperature
1.8h is boiled, is then filtered, leaching material B is obtained；
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: 5 parts of potassium hydroxide, amino carboxylic acid
0.4 part, 0.1 part of vanadic anhydride, 92 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: 16 parts of percarbamide, potassium hydroxide 5
Part, 0.1 part of vanadic anhydride, 92 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: 16 parts of percarbamide, potassium hydroxide 5
Part, 0.4 part of amino carboxylic acid, 92 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: 6 parts of alkyl phenol polyoxyethylene ether, three
0.5 part of ethanol amine, 67 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: 0.7 part of stearic acid, 0.8 part of oleic acid,
1.2 parts of lauric acid, 67 parts of water, other preparation processes are identical as the preparation process of comparative example 5.
Bleached pulp is prepared using the preparation process of embodiment 1-3 and comparative example 1-7, detects paper pulp yield and whiteness respectively,
As a result as shown in the table.
| Experimental project | Paper pulp yield, % | Whiteness, %ISO |
| Embodiment 1 | 63.25 | 57.02 |
| Embodiment 2 | 64.68 | 57.71 |
| Embodiment 3 | 66.42 | 59.66 |
| Comparative example 1 | 58.44 | 53.05 |
| Comparative example 2 | 54.97 | 50.43 |
| Comparative example 3 | 57.42 | 52.26 |
| Comparative example 4 | 56.25 | 51.41 |
| Comparative example 5 | 51.50 | 47.45 |
| Comparative example 6 | 47.22 | 43.54 |
| Comparative example 7 | 48.71 | 44.22 |
Can by comparative example 1-4 it is found that percarbamide, amino carboxylic acid, 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；Amino carboxylic acid can play chelation；Vanadic anhydride plays the work of catalysis
With；Know that percarbamide, amino carboxylic acid, 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, tristearin once is not added in pretreatment immersion liquid A
Acid, oleic acid, lauric acid can reduce paper pulp yield and whiteness, this is because alkyl phenol polyoxyethylene ether, triethanolamine are wet
Agent plays good humidification；Stearic acid, oleic acid, lauric acid play sinocalamus latiflorus crushed material surface-active action；Simultaneously by reality
Alkyl phenol polyoxyethylene ether, triethanolamine, stearic acid, oleic acid, laurel known to the paper pulp yield and whiteness of example 3 and comparative example 5-7
The addition of acid plays synergistic effect, improves 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 | 80.2 | 11.45 | 186.56 |
| Embodiment 2 | 81.1 | 11.91 | 190.35 |
| Embodiment 3 | 83.3 | 12.21 | 192.56 |
| Comparative example 1 | 76.6 | 10.19 | 181.54 |
| Comparative example 2 | 75.1 | 9.51 | 176.78 |
| Comparative example 3 | 76.3 | 9.84 | 179.65 |
| Comparative example 4 | 75.5 | 9.57 | 178.77 |
| Comparative example 5 | 74.3 | 9.37 | 174.32 |
| Comparative example 6 | 69.3 | 9.02 | 170.54 |
| Comparative example 7 | 71.6 | 9.16 | 171.48 |
Can by comparative example 1-4 it is found that percarbamide, amino carboxylic acid, 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；Amino carboxylic acid 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, amino carboxylic acid, 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, tristearin once is not added in pretreatment immersion liquid A
Acid, oleic acid, lauric acid can reduce the brightness of toilet paper, tensile index, pliability, this is because alkyl phenol polyoxyethylene ether,
Triethanolamine is wetting agent, plays good humidification；It is living that stearic acid, oleic acid, lauric acid play sinocalamus latiflorus crushed material surface
Property effect；The alkylphenol-polyethenoxy known to the brightness of example 3 and the toilet paper of comparative example 5-7, tensile index, pliability simultaneously
Ether, triethanolamine, stearic acid, oleic acid, lauric addition play synergistic effect, improve brightness, the anti-tensile of toilet paper
Index, pliability.
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 (5)
1. a kind of method that sinocalamus latiflorus prepares 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: 4-8 parts of alkyl phenol polyoxyethylene ether, triethanolamine 0.3-0.6
Part, 0.5-1 parts of stearic acid, 0.4-1.2 parts of oleic acid, 0.8-1.5 parts of lauric acid, 42-90 parts of water are soaked under ultrasonic wave effect
26-40min is steeped, 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 is with parts by weight
Two are aoxidized for unit, including following raw material: 10-20 parts of percarbamide, 4-6 parts of potassium hydroxide, 0.3-0.5 parts of amino carboxylic acid, five
0.1-0.2 parts of vanadium, 35-150 parts of water carry out boiling at being 142-160 DEG C in temperature, then filter, and obtain leaching material B；
S3: leaching material B made from step S2 is washed with 60-80 DEG C of hot water, then screens, bleach, bleached pulp is made.
2. the method that sinocalamus latiflorus according to claim 1 prepares bleached pulp, it is characterised in that: immersion liquid A described in step S1 with
Parts by weight are unit, including following raw material: 6 parts of alkyl phenol polyoxyethylene ether, 0.5 part of triethanolamine, 0.8 part of stearic acid, oleic acid
0.8 part, 1.2 parts of lauric acid, 66 parts of water.
3. the method that sinocalamus latiflorus according to claim 1 prepares bleached pulp, it is characterised in that: ultrasonic wave function described in step S1
Rate is 30-50W, and temperature is 43-48 DEG C.
4. the method that sinocalamus latiflorus according to claim 1 prepares bleached pulp, it is characterised in that: boiling described in step S2 when
Between be 1.5-2h.
5. the method that sinocalamus latiflorus according to claim 1 prepares bleached pulp, it is characterised in that: washing described in step S3 to pH
Value is 6.8-7.2.
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| CN101871177A (en) * | 2009-04-27 | 2010-10-27 | 中国制浆造纸研究院 | Method for bleaching natural color pulp |
| JP5585323B2 (en) * | 2010-09-07 | 2014-09-10 | 王子ホールディングス株式会社 | Method for bleaching pulp for papermaking |
| CN102352572B (en) * | 2011-09-30 | 2013-07-24 | 重庆理文造纸有限公司 | Preparation method for bamboo wood dissolving pulp |
| CN102978993A (en) * | 2012-11-26 | 2013-03-20 | 四川银鸽竹浆纸业有限公司 | Bamboo fiber dissolving pulp and production technology thereof |
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