CN106868907A - A kind of whiteness bagasse pulp high and its environment friendly pulping process - Google Patents
A kind of whiteness bagasse pulp high and its environment friendly pulping process Download PDFInfo
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- CN106868907A CN106868907A CN201611261523.7A CN201611261523A CN106868907A CN 106868907 A CN106868907 A CN 106868907A CN 201611261523 A CN201611261523 A CN 201611261523A CN 106868907 A CN106868907 A CN 106868907A
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- bagasse
- whiteness
- extracting
- weight
- pulping process
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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
- D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
-
- 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
- D21C7/00—Digesters
-
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
The invention discloses a kind of environment friendly pulping process of whiteness bagasse pulp high, comprise the following steps：S1, will air-dry after bagasse dedusting emedullate, add the distilled water of 6~10 times of over dry bagasse weight, be warming up to 120~150 DEG C, be incubated 30~50min, filtering takes filter residue and obtains pre- extracting bagasse；S2, will in advance extract bagasse and be fitted into boiling vessel, add hydrogen peroxide, alkali and modified zeolite as digestant, be heated to 150~170 DEG C of insulations, obtain boiling material；S3, by the cooling of boiling material, add alkali, be incubated and slightly starched at being 60~80 DEG C in temperature；S4, dilution will be slightly starched, then cyclic washing purification is improved to more than 20% slurry concentration, obtains whiteness bagasse pulp high；The invention also discloses a kind of whiteness bagasse pulp high.The present invention, using hot extraction process by water, adds zeolite to improve bleaching efficiency using bagasse as raw material, reduces production cost, improves pulp brightness, and preparation technology is reasonable, efficiency high.
Description
Technical field
The present invention relates to bagasse pulp technical field, more particularly to a kind of whiteness bagasse pulp high and its environment-friendly pulping work
Skill.
Background technology
Bagasse is the byproduct of cane sugar manufacture, can manufacture chemical pulp with conventional alkaline process or sulfate process, easily boils easily drift, paper pulp
It is functional, and boiling with bleaching chemicals usage also than timber much less.Bagasse pulp possesses very ripe black liquor alkali
Recovery technology.Suitable with broad-leaved wood fiber length due to sugarcane fiber 1.01~2.34mm of length, bagasse bleach chemical pulp is mixed and is matched somebody with somebody
Certain long fibre, can manufacture the original paper for meeting quality index.Current sugarcane slurrying based on alkaline cooking, traditional soda
Boiling, paper pulp yield is low, and most of silicon is dissolved in black liquor, causes black liquor viscosity high, and evaporation and alkali collection are difficult, have a strong impact on ring
Border, the whiteness of paper pulp is not high, it is impossible to meet the production requirement of brightness papers high.Therefore, a kind of clean environment firendly, whiteness high are developed
Bagasse pulp is very necessary in seeming for papermaking application for expanding bagasse.
The content of the invention
The present invention proposes a kind of whiteness bagasse pulp high and its environment friendly pulping process, using bagasse as raw material, uses
Hot water carries process modification alkaline cooking paper pulp, adds zeolite to improve the bleaching efficiency of hydrogen peroxide, reduces production cost, makes
Obtained whiteness paper pulp high, rationally, efficiency high economizes on resources, clean environment firendly preparation technology of the present invention.
A kind of environment friendly pulping process of whiteness bagasse pulp high proposed by the present invention, comprises the following steps：
S1, will air-dry after bagasse dedusting emedullate, add the distilled water of 6~10 times of over dry bagasse weight, be warming up to
120~150 DEG C, 30~50min is incubated, filtering takes filter residue and obtains pre- extracting bagasse；
S2, will in advance extract bagasse and be fitted into boiling vessel, add hydrogen peroxide, alkali and modified zeolite as digestant, peroxide
Change hydrogen consumption is the 10~15% of pre- extracting bagasse weight, and the consumption of alkali is the 10~20% of pre- extracting bagasse weight, and zeolite is used
It is the 1~5% of pre- extracting bagasse weight to measure, then by 4~8 times of addition distilled water of pre- extracting bagasse weight, it is heated to 150~
170 DEG C, 0.5~1.5h is incubated, obtains boiling material；
S3, by the cooling of boiling material, add alkali, base amount is pre- extracting bagasse weight 1~5%, is 60~80 in temperature
0.5~1.5h is incubated at DEG C, is slightly starched；
S4, dilution will be slightly starched, then cyclic washing purification is improved to more than 20% slurry concentration, obtains whiteness bagasse high
Paper pulp.
Preferably, in S1, the distilled water of 8 times of over dry bagasse weight is added；
Preferably, in S1,130 DEG C are warming up to, are incubated 40min.
Preferably, in S2, alkali is NaOH or potassium hydroxide.
Preferably, in S2, modified zeolite is obtained by following steps：Zeolite is weighed, deionized water dispersed with stirring, heating is added
To 100~120 DEG C of activation dehydrations, ground 180~220 mesh sieve obtains activated powder, activated powder is placed in into surfactant
It is that 70~90 DEG C of constant temperature stir 1~3h in temperature in solution, filtering, washing is dried at 80~90 DEG C, obtains modified zeolite.
Preferably, the molal quantity of surfactant is 1.5~2 times of activated powder cation exchange capacity (CEC).
Preferably, surfactant is in neopelex, dodecyl sodium sulfate, lauryl sodium sulfate
It is a kind of.
Preferably, the bulking value g of activated powder and surfactant solution:Ml ratios are 1：15~20.
Preferably, in S2, hydrogen peroxide use is the 13% of pre- extracting bagasse weight.
Preferably, in S2, the consumption of alkali is the 15% of pre- extracting bagasse weight.
Preferably, in S2, zeolite quantity is the 3% of pre- extracting bagasse weight.
Preferably, in S2, by 6 times of addition distilled water of pre- extracting bagasse weight.
Preferably, in S2,160 DEG C are heated to, are incubated 1h.
Preferably, in S3, base amount is pre- extracting bagasse weight 3%.
Preferably, in S2, alkali is NaOH or potassium hydroxide.
Preferably, in S3,1h is incubated at being 70 DEG C in temperature.
A kind of whiteness bagasse pulp high proposed by the present invention, by the environment friendly pulping process system of described whiteness bagasse pulp high
.
The present invention is pre-processed with water extraction using the big bagasse of wide, yield of originating as pulping raw material to bagasse, though
Right water extraction slightly reduces paper pulp rate, but hot-water extraction causes hemicellulose degradation dissolution, half fiber when reducing boiling
Consumption of the element to alkali, it is to avoid the alkali number of lignin reaction is not enough so that lignin process is more thorough, improves pulp brightness and system
Paper quality, meanwhile, hot-water extraction can be lowered into the hemicellulose level of black liquor, reduce black liquor viscosity and residual alkali concentration, have
Beneficial to the recycling of black liquor, reducing energy consumption improves organic efficiency；The stablizing effect of modified zeolite is better than zeolite, with sodium metasilicate
Stablizing effect quite, can mitigate because sodium metasilicate is caused using influence evaporation and causticization as the substitute of sodium metasilicate
Felt and the blocking of copper mesh, reduce the accumulation and interference of silicon；Zeolite enhances the chelant to metal ion by modified,
The catalytic performance of metal ion is reduced, the decomposition of hydrogen peroxide is reduced, the bleaching power of hydrogen peroxide is improve, matched somebody with somebody
Adding alkali twice is closed, the rear journey activation to paper pulp hydrogen peroxide bleaching, so as to improve the selectivity of bleaching process, optimizes the white of paper pulp
Degree and viscosity, present invention bleaching future play the advantage that hydrogen peroxide bleaching speed is high, selectivity is good, and Cheng Ze is played and lived after bleaching
Property agent and alkali strong reactivity so that persistently carrying out for whole pulping process bleaching, effectively increase the whiteness of paper pulp.
Specific embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of whiteness bagasse pulp high, is obtained by following pulping process：
S1, will air-dry after bagasse dedusting emedullate, add the distilled water of 6 times of over dry bagasse weight, be warming up to 120
DEG C, 30min is incubated, filtering takes filter residue and obtains pre- extracting bagasse；
S2, will in advance extract bagasse and be fitted into boiling vessel, add hydrogen peroxide, alkali and modified zeolite as digestant, peroxide
Change hydrogen consumption is the 105% of pre- extracting bagasse weight, and the consumption of alkali is the 10% of pre- extracting bagasse weight, and zeolite quantity is to take out in advance
The 1% of bagasse weight is carried, then by 4 times of addition distilled water of pre- extracting bagasse weight, is heated to 150 DEG C, be incubated 1.5h, steamed
Stewed Dish material；
S3, by the cooling of boiling material, add alkali, base amount is pre- extracting bagasse weight 1%, is incubated at being 60 DEG C in temperature
1.5h, is slightly starched；
S4, dilution will be slightly starched, then cyclic washing purification is improved to more than 20% slurry concentration, obtains whiteness bagasse high
Paper pulp.
Embodiment 2
A kind of whiteness bagasse pulp high, is obtained by following pulping process：
S1, will air-dry after bagasse dedusting emedullate, add the distilled water of 10 times of over dry bagasse weight, be warming up to 150
DEG C, 50min is incubated, filtering takes filter residue and obtains pre- extracting bagasse；
S2, will in advance extract bagasse and be fitted into boiling vessel, add hydrogen peroxide, alkali and modified zeolite as digestant, peroxide
Change hydrogen consumption is the 15% of pre- extracting bagasse weight, and the consumption of alkali is the 20% of pre- extracting bagasse weight, and zeolite quantity is to take out in advance
The 5% of bagasse weight is carried, then by 8 times of addition distilled water of pre- extracting bagasse weight, is heated to 170 DEG C, be incubated 0.5h, steamed
Stewed Dish material；
S3, by the cooling of boiling material, add alkali, base amount is pre- extracting bagasse weight 1~5%, at being 80 DEG C in temperature
Insulation 0.5h, is slightly starched；
S4, dilution will be slightly starched, then cyclic washing purification is improved to more than 20% slurry concentration, obtains whiteness bagasse high
Paper pulp.
Embodiment 3
A kind of whiteness bagasse pulp high, is obtained by following pulping process：
S1, will air-dry after bagasse dedusting emedullate, add the distilled water of 8 times of over dry bagasse weight, be warming up to 130
DEG C, 40min is incubated, filtering takes filter residue and obtains pre- extracting bagasse；
S2, will in advance extract bagasse and be fitted into boiling vessel, add hydrogen peroxide, NaOH and modified zeolite as boiling
Agent, hydrogen peroxide use is the 13% of pre- extracting bagasse weight, and the consumption of alkali is the 15% of pre- extracting bagasse weight, zeolite quantity
It is the 3% of pre- extracting bagasse weight, then by 6 times of addition distilled water of pre- extracting bagasse weight, is heated to 160 DEG C, be incubated 1h, obtains
To boiling material；
S3, by the cooling of boiling material, add NaOH, sodium hydroxide concentration is pre- extracting bagasse weight 3%, in temperature
To be incubated 1h at 70 DEG C, slightly starched；
S4, dilution will be slightly starched, then cyclic washing purification is improved to more than 20% slurry concentration, obtains whiteness bagasse high
Paper pulp；
Wherein, modified zeolite is obtained by following steps：Zeolite is weighed, deionized water dispersed with stirring is added, 100 DEG C are heated to
Activation dehydration, ground 180 mesh sieve obtains activated powder, activated powder is placed in surfactant solution, is 70 in temperature
DEG C constant temperature stirring 1h, filtering, washing is dried at 80 DEG C, obtains modified zeolite.
Embodiment 4
A kind of whiteness bagasse pulp high, is obtained by following pulping process：
S1, will air-dry after bagasse dedusting emedullate, add the distilled water of 8 times of over dry bagasse weight, be warming up to 130
DEG C, 40min is incubated, filtering takes filter residue and obtains pre- extracting bagasse；
S2, will in advance extract bagasse and be fitted into boiling vessel, add hydrogen peroxide, alkali and modified zeolite as digestant, peroxide
Change hydrogen consumption is the 13% of pre- extracting bagasse weight, and the consumption of alkali is the 15% of pre- extracting bagasse weight, and zeolite quantity is to take out in advance
The 3% of bagasse weight is carried, then by 6 times of addition distilled water of pre- extracting bagasse weight, is heated to 160 DEG C, be incubated 1h, obtain boiling
Material；
S3, by the cooling of boiling material, add potassium hydroxide, potassium hydroxide consumption is pre- extracting bagasse weight 3%, in temperature
To be incubated 1h at 70 DEG C, slightly starched；
S4, dilution will be slightly starched, then cyclic washing purification is improved to more than 20% slurry concentration, obtains whiteness bagasse high
Paper pulp；
Wherein, modified zeolite is obtained by following steps：Zeolite is weighed, deionized water dispersed with stirring is added, 100 DEG C are heated to
Activation dehydration, ground 180 mesh sieve obtains activated powder, activated powder is placed in neopelex solution, 12
The molal quantity of sodium alkyl benzene sulfonate is 1.5 times of activated powder cation exchange capacity (CEC), activated powder and neopelex
The bulking value g of solution:Ml ratios are 1：15, it is 70 DEG C of constant temperature stirring 3h in temperature, filtering, washing is dried at 80 DEG C, obtained
Modified zeolite.
Embodiment 5
A kind of whiteness bagasse pulp high, is obtained by following pulping process：
S1, will air-dry after bagasse dedusting emedullate, add the distilled water of 8 times of over dry bagasse weight, be warming up to 130
DEG C, 40min is incubated, filtering takes filter residue and obtains pre- extracting bagasse；
S2, will in advance extract bagasse and be fitted into boiling vessel, add hydrogen peroxide, alkali and modified zeolite as digestant, peroxide
Change hydrogen consumption is the 13% of pre- extracting bagasse weight, and the consumption of alkali is the 15% of pre- extracting bagasse weight, and zeolite quantity is to take out in advance
The 3% of bagasse weight is carried, by 6 times of addition distilled water of pre- extracting bagasse weight, 160 DEG C is heated to, 1h is incubated, cooking material is obtained
Material；
S3, by the cooling of boiling material, add potassium hydroxide, potassium hydroxide consumption is pre- extracting bagasse weight 3%, in temperature
To be incubated 1h at 70 DEG C, slightly starched；
S4, dilution will be slightly starched, then cyclic washing purification is improved to more than 20% slurry concentration, obtains whiteness bagasse high
Paper pulp；
Wherein, modified zeolite is obtained by following steps：Zeolite is weighed, deionized water dispersed with stirring is added, 120 DEG C are heated to
Activation dehydration, ground 220 mesh sieve obtains activated powder, activated powder is placed in sodium dodecyl sulfate solution, dodecane
The molal quantity of base sodium sulfonate is the weight of 2 times of activated powder cation exchange capacity (CEC), activated powder and sodium dodecyl sulfate solution
Amount volume g:Ml ratios are 1：20, it is 90 DEG C of constant temperature stirring 1h in temperature, filtering, washing is dried at 90 DEG C, obtains modified boiling
Stone.
Embodiment 6
A kind of whiteness bagasse pulp high, is obtained by following pulping process：
S1, will air-dry after bagasse dedusting emedullate, add the distilled water of 8 times of over dry bagasse weight, be warming up to 130
DEG C, 40min is incubated, filtering takes filter residue and obtains pre- extracting bagasse；
S2, will in advance extract bagasse and be fitted into boiling vessel, add hydrogen peroxide, alkali and modified zeolite as digestant, peroxide
Change hydrogen consumption is the 13% of pre- extracting bagasse weight, and the consumption of alkali is the 15% of pre- extracting bagasse weight, and zeolite quantity is to take out in advance
The 3% of bagasse weight is carried, then by 6 times of addition distilled water of pre- extracting bagasse weight, is heated to 160 DEG C, be incubated 1h, obtain boiling
Material；
S3, by the cooling of boiling material, add potassium hydroxide, potassium hydroxide consumption is pre- extracting bagasse weight 3%, in temperature
To be incubated 1h at 70 DEG C, slightly starched；
S4, dilution will be slightly starched, then cyclic washing purification is improved to more than 20% slurry concentration, obtains whiteness bagasse high
Paper pulp；
Wherein, modified zeolite is obtained by following steps：Zeolite is weighed, deionized water dispersed with stirring is added, 110 DEG C are heated to
Activation dehydration, ground 200 mesh sieve obtains activated powder, activated powder is placed in sodium dodecyl sulfate solution, dodecane
The molal quantity of base sodium sulphate is 1.7 times of activated powder cation exchange capacity (CEC), activated powder and sodium dodecyl sulfate solution
Bulking value g:Ml ratios are 1：17, it is 80 DEG C of constant temperature stirring 2h in temperature, filtering, washing is dried at 85 DEG C, obtains modified boiling
Stone.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of environment friendly pulping process of whiteness bagasse pulp high, it is characterised in that comprise the following steps：
S1, will air-dry after bagasse dedusting emedullate, add the distilled water of 6~10 times of over dry bagasse weight, be warming up to 120~
150 DEG C, 30~50min is incubated, filtering takes filter residue and obtains pre- extracting bagasse；
S2, will in advance extract bagasse and be fitted into boiling vessel, add hydrogen peroxide, alkali and modified zeolite as digestant, hydrogen peroxide
Consumption is the 10~15% of pre- extracting bagasse weight, and the consumption of alkali is the 10~20% of pre- extracting bagasse weight, and zeolite quantity is
The 1~5% of pre- extracting bagasse weight, then by 4~8 times of addition distilled water of pre- extracting bagasse weight, 150~170 DEG C are heated to,
0.5~1.5h of insulation, obtains boiling material；
S3, by the cooling of boiling material, add alkali, base amount is pre- extracting bagasse weight 1~5%, at being 60~80 DEG C in temperature
0.5~1.5h of insulation, is slightly starched；
S4, dilution will be slightly starched, then cyclic washing purification is improved to more than 20% slurry concentration, obtains whiteness bagasse pulp high.
2. the environment friendly pulping process of whiteness bagasse pulp high according to claim 1, it is characterised in that in S1, adds exhausted
The distilled water of 8 times of dry bagasse weight；Preferably, in S1,130 DEG C are warming up to, are incubated 40min.
3. the environment friendly pulping process of whiteness bagasse pulp high according to claim 1, it is characterised in that in S2, be modified boiling
Stone is obtained by following steps：Zeolite is weighed, deionized water dispersed with stirring is added, 100~120 DEG C of activation dehydrations, grinding are heated to
180~220 mesh sieves are crossed, activated powder is obtained, activated powder is placed in surfactant solution, be 70~90 DEG C of perseverances in temperature
Temperature 1~3h of stirring, filtering, washing is dried at 80~90 DEG C, obtains modified zeolite.
4. the environment friendly pulping process of whiteness bagasse pulp high according to claim 3, it is characterised in that surfactant
Molal quantity is 1.5~2 times of activated powder cation exchange capacity (CEC).
5. the environment friendly pulping process of whiteness bagasse pulp high according to claim 3, it is characterised in that surfactant is
One kind in neopelex, dodecyl sodium sulfate, lauryl sodium sulfate.
6. the environment friendly pulping process of whiteness bagasse pulp high according to claim 3, it is characterised in that activated powder and table
The bulking value g of face activator solution:Ml ratios are 1：15~20.
7. the environment friendly pulping process of whiteness bagasse pulp high according to claim 1, it is characterised in that in S2, peroxidating
Hydrogen consumption is the 13% of pre- extracting bagasse weight；Preferably, in S2, the consumption of alkali is the 15% of pre- extracting bagasse weight；It is preferred that
Ground, in S2, zeolite quantity is the 3% of pre- extracting bagasse weight.
8. the environment friendly pulping process of whiteness bagasse pulp high according to claim 1, it is characterised in that in S2, by taking out in advance
Carry 6 times of addition distilled water of bagasse weight；Preferably, in S2,160 DEG C are heated to, are incubated 1h.
9. the environment friendly pulping process of whiteness bagasse pulp high according to claim 1, it is characterised in that in S3, base amount
It is pre- extracting bagasse weight 3%；Preferably, in S3,1h is incubated at being 70 DEG C in temperature.
10. a kind of whiteness bagasse pulp high, it is characterised in that the ring of the whiteness bagasse pulp high as described in right any one of 1-9
Pulping process is protected to be obtained.
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Cited By (1)
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|---|---|---|---|---|
| CN108130806A (en) * | 2017-12-08 | 2018-06-08 | 齐鲁工业大学 | The cleaning pulping of resistance to highly basic auxiliary agent and its technique for applying |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108130806A (en) * | 2017-12-08 | 2018-06-08 | 齐鲁工业大学 | The cleaning pulping of resistance to highly basic auxiliary agent and its technique for applying |
| CN108130806B (en) * | 2017-12-08 | 2020-08-04 | 齐鲁工业大学 | Strong alkali resistant clean pulping auxiliary agent and application process thereof |
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