CN105386351A - Fast-growing willow pulping process - Google Patents
Fast-growing willow pulping process Download PDFInfo
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- CN105386351A CN105386351A CN201510649598.1A CN201510649598A CN105386351A CN 105386351 A CN105386351 A CN 105386351A CN 201510649598 A CN201510649598 A CN 201510649598A CN 105386351 A CN105386351 A CN 105386351A
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- growing willow
- willow
- growing
- mass fraction
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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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
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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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
- D21C3/028—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O3
-
- 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- 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
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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
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
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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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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The present application discloses a fast-growing willow pulping process. The process comprises the following steps: step 1, crushing or chipping a fast-growing willow; step 2: immersing the product obtained in step 1 into immersion liquid, wherein the immersion liquid comprises Na2O2, Na2S2O3, O3, cellulase and oxalic acid dihydrate; step 3: filtering the product obtained in step 2, and adding water and grinding a solid obtained after filtration; step 4: selecting fiber from the product obtained in step 3, and washing the fiber with water; and step 5: filtering the product obtained in step 4 so as to obtain pulp needed in later process. According to the fast-growing willow pulping process, water does not drain during water using, and the entire process is pollution-free, so that pollutant emissions in a papermaking process can be greatly reduced and basically avoided, the pollutant processing cost is low, and the environment is also protected; the resource utilization rate is high, and the energy saving and consumption reducing effects are obvious; and fibers of the fast-growing willow are sufficiently utilized, and the recycling utilization of resources is implemented.
Description
Technical field
The application relates to slurrying field, particularly relates to a kind of fast-growing willow pulping process.
Background technology
In recent years, global pulp production and supplyment amount all increases with the speed of annual 2000 ten thousand tons, and market pulp is less than 1/4, and world's market pulp volume of trade about 7,000 ten thousand tons, net exporter is few in number.And recently China's Paper Industry Development is swift and violent, the papermaking industry output that state in 2014 consumes cellulose maximum reaches 11,500 ten thousand tons, ranks first in the world from the output of paper industry in 2010, consumption figure.
While high speed development, also there are comparatively distinct issues in China's paper industry:
First, quality raw materials breach is large, external dependence degree is high, China's paper pulp heavy dependence import, constrain the development of China's paper industry, China's Forest Resources is few, does not have sufficient timber resources Paper Industry, the wood pulp of 70% is by import, import volume accounts for 1/4th of world's export availability, and meanwhile, the waste paper also needing import to account for world export total amount 55% carrys out the wretched insufficiency of supplementary paper making raw material.
Fast-growing willow, also claiming bamboo willow, fast-growing bamboo willow, is Salicaceae sallow, fast-growing willow is high as fiber content, adaptability is comparatively strong, cultivate that regional range spans is comparatively large, fast growth, can dense planting, and output is high, and before not adding bleaching, nature whiteness is up to 60%, and timber slurry yield is up to 95%, and material fibers is soft, wooden evenly fine and closely woven, be the preferred material of superior commercial paper, packing business and building industry material, therefore, the development of bamboo willow and fiber thereof has well perspective.And existing papermaking or pulping process have following shortcoming:
1) environmental pollution is serious, prevention and cure of pollution arduous task
The process structure that tradition paper industry falls behind and the structure of size and lower low-level technical equipment, determine the industrial pollution source that China's paper industry becomes main.Tradition pulping process generally takes strong acid, highly basic, and high temperature (more than 170 DEG C), high pressure reach the boiling of a few hours, produce reluctant black liquor, cause severe contamination to environment, and the waste liquid especially in non-wood fiber manufacture process is difficult to process especially.
2) resource, energy-output ratio are large
With regard to slurry paper comprehensive energy consumption per ton and integrated water consumption, advanced level is slurry paper comprehensive energy consumption 0.9-1.2 ton mark coal per ton in the world, comprehensive water withdrawal 35--50 ton (wood pulp), and China is except minority enterprise or part producing line are reached advanced world standards, major part enterprise ton slurry paper comprehensive energy consumption average out to about 1.48 tons mark coals, comprehensive water withdrawal is on average still in about 103 tons high positions.
3) construction investment is large, transformation is difficult
At present, the investment situation of domestic traditional chemical pulping facility construction is: every 10,000 tons of paper pulp reach 1--1.5 about hundred million yuan funds.Traditional chemical pulping line, backward in technique, equip outmoded larger to the slurrying corporation improvement pressure of various fiber.
Prior art is not to the pulp production exemplary applications of fast-growing willow material, contrast operations such as first will peeling on raw material or strip off the skin in other wood fiber material, then wood chip is whittled into, ensure that the qualification rate of cutting wood chip is more than 85%, the screened process of going down of defective tablet, then qualified wood chip is loaded high temperature resistant, the container of high pressure also to have in strong acid or alkali lye boiling about 3 hours, produce a large amount of black liquor or red liquid, boiling discharges when terminating discharging has gas with foreign flavor in a large number, also can ferment when can not process in time and produce heavier noxious odor, pass through mechanical jordaning, massive laundering is starched, screening, pulp washing etc.
Therefore, be badly in need of a kind of fast-growing willow pulping process, can solve that above-mentioned environmental pollution is large, equipment requirement is high, security is low, it is huge to invest, consume energy too high, that resource utilization is low problem.
This project will manufacture in production overall process at bamboo willow cellulose, realize not boiling, without black liquor, the clean method that do not discharge, the bamboo willow utilization of resources larger for China's reserves is created a Tiao Xin road by applying of this innovation achievement, brings huge economic benefit and social benefit by giving the fiber utilization of China.
Summary of the invention
The main purpose of the application is to provide a kind of fast-growing willow pulping process, and to solve, existing pulping process environmental pollution is large, equipment requirement is high, security is low, it is huge to invest, consume energy too high, that resource utilization is low problem.
For solving the problem, this application provides a kind of fast-growing willow pulping process, it is characterized in that, a kind of fast-growing willow pulping process, is characterized in that, comprise the following steps:
Step 1: fast-growing willow is broken or chip;
Step 2: impregnated in immersion liquid by the product that described step 1 obtains, described immersion liquid comprises Na
2o
2, Na
2s
2o
3, O3, cellulase and oxalic acid dihydrate;
Step 3: the product described step 2 obtained filters, add water the solid obtained after filtration grinding;
Step 4: filter out fiber from the product that described step 3 obtains, and by fiber water or recycled water washing;
Step 5: filtered in the product that described step 4 is obtained to obtain the paper pulp of late stage process needs.
Preferably, also step 6 is comprised: by isolated for described step 5 product papermaking.
Preferably, the temperature of described fast-growing willow dipping is 70-100 degree Celsius.
Preferably, the temperature of described fast-growing willow dipping is 70-90 degree Celsius.
Preferably, the time of described fast-growing willow dipping is 50-90 minute.
Preferably, described paper pulp was bleached before papermaking.
Preferably, it is characterized in that, described Na
2o
2mass fraction be 2.5-4.5%, described Na
2s
2o
3mass fraction be 1%-3%, described O
3mass fraction be 0.1%-1.3%, the mass fraction of described cellulase and oxalic acid dihydrate is 0.1%-2%.
Preferably, described Na
2o
2mass fraction be 3-4%, described Na
2s
2o
3mass fraction be 1%-3%, described O
3mass fraction be 0.1%-0.8%, the mass fraction of described cellulase and oxalic acid dihydrate is 0.1%-1%.
Preferably, described Na
2o
2mass fraction be 3.5%, described Na
2s
2o
3mass fraction be 2%, described O
3mass fraction be 0.5%, the mass fraction of described cellulase and oxalic acid dihydrate is 0.7%.
Compared with prior art, a kind of fast-growing willow pulping process described in the application, reaches following effect:
1) a kind of fast-growing willow pulping process described in the application, with water not draining, realizes whole process pollution-free, can greatly reduce the pollutant emission of even substantially stopping in paper technology, while pollutant processing cost is little, also protects environment;
2) a kind of fast-growing willow pulping process described in the application, resource utilization is high, and energy conservation and consumption reduction effects is obvious;
3) a kind of fast-growing willow pulping process described in the application, makes full use of fast-growing willow fiber, realizes resource circulation utilization, and new technology can make full use of fast-growing willow fiber as raw material, can save again a large amount of forest timber resource.
4) a kind of fast-growing willow pulping process described in the application, reduce cost of investment, shorten the construction period, novel technique have high in technological content, input-output ratio is high, the construction period is short, investment instant effect advantage.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present application, and form a application's part, the schematic description and description of the application, for explaining the application, does not form the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the flow chart of fast-growing willow pulping process in the application.
Detailed description of the invention
As employed some vocabulary to censure specific components in the middle of description and claim.Those skilled in the art should understand, and hardware manufacturer may call same assembly with different noun.This specification and claims are not used as with the difference of title the mode distinguishing assembly, but are used as the criterion of differentiation with assembly difference functionally.Description subsequent descriptions is implement the better embodiment of the application, and right described description is for the purpose of the rule that the application is described, and is not used to the scope limiting the application.The protection domain of the application is when being as the criterion depending on the claims person of defining.Certainly, the pulping process described in the present invention not only can be used on this raw material of fast-growing willow, uses technique of the present invention also should belong to protection scope of the present invention in characteristic with raw material like fast-growing willow phase.
As shown in the flow chart of fast-growing willow pulping process in Fig. 1 the application, a kind of fast-growing willow pulping process, comprises the following steps:
Step 1: fast-growing willow is broken or chip;
Step 2: impregnated in immersion liquid by the product that described step 1 obtains, described immersion liquid comprises Na
2o
2, Na
2s
2o
3, O3, cellulase and oxalic acid dihydrate;
Step 3: the product described step 2 obtained filters, add water the solid obtained after filtration grinding;
Step 4: filter out fiber from the product that described step 3 obtains, and by fiber water or recycled water washing;
Step 5: filtered in the product that described step 4 is obtained to obtain the paper pulp of late stage process needs.
Preferably, also step 6 is comprised: by isolated for described step 5 product papermaking.
Fast-growing willow is broken or chip; Ready fast-growing willow raw material is delivered to chipping machine or disintegrating machine, decortication process can be carried out before and also can peel and directly carry out fragmentation, before entering next step, can preferably fast-growing willow fragment be carried out screening, dedusting, impurity, dust are gone out.
The product that described step 1 obtains be impregnated in immersion liquid, can impregnated in immersion liquid at ambient pressure, comprising of described immersion liquid: Na
2o
2, Na
2s
2o
3, O
3, cellulase and oxalic acid dihydrate; The temperature of dipping is 70-90 degree Celsius, is the temperature that generic container can be born, the lignin of the fast-growing willow sheet part after impregnation process and hemicellulose modification, and fast-growing willow sheet permeate, soften and sub-wire.
The product described step 2 obtained filters, by fast-growing willow defibrination; Filtered by fast-growing willow sheet, described immersion liquid can be reused, and described fast-growing willow sheet is carried out mechanical jordaning.
The product screening washing that described step 3 is obtained, owing to also having fibre bundle or the metal of fibrous raw material in machinery stream, in grinding, the grains of sand etc. of non-grinding in slurry, by this road technological operation of screening purification, removing impurity and crude fibre, deviate to residue in the immersion liquid in slurry; Screening refers to the product described step 3 obtained with the sieved filter of fiber, according to the Production requirement of the paper pulp fiber of different size, length, the order number of fiber sieve, the size of sieve aperture are set, required thickness, the fiber of size can be extracted flexibly by screening process.
Because wood chip immersion liquid was soaked, containing a small amount of immersion liquid in wood chip, also described immersion liquid can be retained in the slurry of grinding gained, and the length and width thickness standard of comparison of the fiber sifted out with sieve and unification, therefore be put in water or recycled water with the slurry that sieve filters out and wash, then sift out namely the product of step for this reason.The fiber taken away in the water that water after washed and first time screening are remaining after starching, can continue according to demand to filter, obtain thinner paper pulp fiber, filters rear remaining water circulation and uses.
The product separation that described step 4 obtains is obtained paper pulp, is separated by described paper pulp with washings, washings can reclaiming circulating and recovering; Described separation method includes but not limited to vacuum filtration, standing separation etc.
The paper pulp that described late stage process needs can carry out concentrated rear direct marketing, also can enter next step papermaking.The moisture of its mode of filtering and filtration controls to be decided by the needs of late stage process.
The temperature of described fast-growing willow dipping is 70-100 degree Celsius.
Preferably, the temperature of described fast-growing willow dipping is 70-90 degree Celsius.
The time of described fast-growing willow dipping is 50-90 minute.
Described paper pulp also can be bleached according to needs before papermaking.
Described Na
2o
2mass fraction be 2.5-4.5%, described Na
2s
2o
3mass fraction be 1%-3%, described O
3mass fraction be 0.1%-1.3%, the mass fraction of described cellulase and oxalic acid dihydrate is 0.1%-2%.
Preferably, described Na
2o
2mass fraction be 3-4%, described Na
2s
2o
3mass fraction be 1%-3%, described O
3mass fraction be 0.1%-0.8%, the mass fraction of described cellulase and oxalic acid dihydrate is 0.1%-1%.
Preferably, described Na
2o
2mass fraction be 3.5%, described Na
2s
2o
3mass fraction be 2%, described O
3mass fraction be 0.5%, the mass fraction of described cellulase and oxalic acid dihydrate is 0.7%.
Fast-growing willow pulping process provided by the invention, with water not draining, fiber manchining feature process is pollution-free, tradition pulping process utilizes highly basic, strong acid high temperature, autoclaving, produces unmanageable black liquor, cause severe contamination to environment, especially the waste liquid in non-wood fiber manufacture process is difficult to process especially, and the production of fast-growing willow (bamboo willow) fiber cleaning is that impregnating agent floods fiber at ambient pressure and softens, do not use highly basic and strong acid, so there is no black liquor and produce.
Meanwhile, the waste liquid of discharging in all different production workshop sections or waste water are according to designing requirement or after segment processing, and regeneration cycle reuse, realizes whole process pollution-free, do not discharge, protect environment.
Fast-growing willow pulping process provided by the invention, resource utilization is high, and energy conservation and consumption reduction effects is obvious, and bamboo willow fiber true qualities comprehensively obtain rate up to 90%; Within the obtained only water consumption 10 tons of cellulose per ton, water saving 90%; Comprehensive energy consumption 217kg marks coal, saving more than 30% compared with tradition.
Fast-growing willow pulping process provided by the invention, makes full use of bamboo willow fiber, realizes resource circulation utilization, and new technology can make full use of bamboo willow fiber as raw material, can save again a large amount of forest timber resource.
Fast-growing willow, namely bamboo willow fibre pulp belongs to medium-length fibre xylon paper pulp, by becoming one of new fast-growing paper-pulp forest material principal item in China next period, will be the most potential economic forest of China pulping and paper-making woods.Future quite over a long time in, paper industry still can be one of the fastest industry of every profession and trade development speedup.Especially in the papermaking most ecosystem of brown stock, comprising: the industry such as unbleached kraft cardboard, packaging for foodstuff, primary colors house paper for daily use etc., have market value and potentiality more widely.
Fast-growing willow pulping process provided by the invention, reduce cost of investment, shorten the construction period, novel technique have high in technological content, input-output ratio is high, the construction period is short, investment instant effect advantage.The 100000 tons of cellulose papermaking of newly-built annual output are equivalent to conventional investment 30%.
If carry out expanding, reconstructing for traditional paper mill, adopt the construction period of this new technology production line to be only 100 days to 150 days, take effect fast especially.Investment is just recoverable within the short period of 2 years.
Embodiment one
A kind of fast-growing willow pulping process, comprising:
Fast-growing willow is broken or chip; Ready fast-growing willow raw material is delivered to disintegrating machine, before entering next step, fast-growing willow fragment is carried out screen, dedusting, impurity, dust are gone out.
Normal pressure impregnated in immersion liquid, comprising of described immersion liquid: Na
2o
2, Na
2s
2o
3, O
3, cellulase and oxalic acid dihydrate; The temperature of dipping is 70-90 degree Celsius, and dip time is 50-90 minute, the lignin of fast-growing willow sheet stripping after impregnation process part and hemicellulose, and fast-growing willow sheet permeate, soften and sub-wire.
Filter, described immersion liquid can be reused, and described fast-growing willow sheet is carried out mechanical jordaning.
Screening washing, owing to also having the fibre bundle of non-grinding in slurry or fibrous raw material send at mechanical stream, metal, the grains of sand etc. in grinding, by this road technological operation of screening purification, removing impurity and crude fibre, clean the immersion liquid residued in slurry;
Slurries are separated and obtain paper pulp, are separated by described paper pulp with washings, and washings can reclaiming circulating and recovering; Described paper pulp can carry out concentrated rear direct marketing, also can enter next step papermaking.
The fast-growing willow pulping process provided by above-described embodiment one, as shown in table 1 below with the contrast table of Chinese tradition soda pulping process in slurry yield, land area, amount of investment and ton slurry cost:
Table 1 fast-growing willow pulping process effect
In addition, as shown in table 2, different pulping process pollutant emission situation contrast, compares by discharging standards GB3544-2008.
Table 2 fast-growing willow pulping process pollutant emission situation
| Project | Fast-growing willow pulping process | Classical acid alkaline process is produced |
| Ton pulp waste water discharge capacity (m 3/t) | 0 | 80 |
| Ton slurry CODcr discharge capacity (kg/t) | 0 | 16 |
| Ton slurry BOD 5Discharge capacity (kg/t) | 0 | 4 |
| Ton slurry SS discharge capacity (kg/t) | 0 | 5.6 |
As shown above, the fast-growing willow pulping process that provides of the present embodiment is provided, produces 100000 tons of fast-growing willow celluloses per year, year can reduce discharging waste water and amount of pollutant is:
Year reduces quantity of wastewater effluent: 100000*80 (ton)=8,000,000 ton;
Year reduces COD
crdischarge capacity: 100000*0.016 (ton)=1600 ton;
Year reduces BOD
5discharge capacity: 100000*0.004 (ton)=400 ton;
Year reduces SS discharge capacity: 100000*0.0056 (ton)=560 ton;
Therefore, the fast-growing willow pulping process adopting the present embodiment to provide, can greatly reduce the pollutant emission of even substantially stopping in paper technology.
In the energy, resources conservation, fast-growing willow pulping process not boiling in cellulose leaching process that the present embodiment provides, not pressurize, complete production at ambient pressure, be conducive to reducing power consumption, coal consumption, there is significant energy-saving effect; Utilize circulating and recovering water system in addition, greatly reduce ton slurry water consumption.Comprehensive energy consumption, the resource consumption situation of this pulping technique are as shown in table 3, and in China's tradition soda pulping process technical process, comprehensive energy consumption situation is as shown in table 4:
Table 3 fast-growing willow pulping process comprehensive energy consumption situation
| Sequence number | Energy resource consumption | Signature coal/kg | Ton slurry energy consumption (signature coal)/kg |
| 1 | Water | 0.257 | 7m3/t cellulose * 0.257kg/m3=1.779kg |
| 2 | Electricity | 0.404 | 325kwh/t starches * 0.404/kwh=131.3kg |
| 3 | Vapour | 129 | 0.65t/t*129kg/t＝83.85kg |
| 4 | Ton slurry comprehensive energy consumption | 1.779+131.3+83.85＝217kg | |
| 5 | Fibrous raw material consumption | 1.27--1.5 ton |
Comprehensive energy consumption situation in the traditional soda pulping process technical process of table 4
| Sequence number | Energy resource consumption | Signature coal/kg | Ton slurry energy consumption (signature coal)/kg |
| 1 | Water | 0.257 | 100m3/t starches * 0.257kg/m3=25.7kg |
| 2 | Electricity | 0.404 | 650kwh/t starches * 0.404kg/kwh=262.6kg |
| 3 | Vapour | 129 | 2.2t/t starches * 129kg/t=283.8kg |
| 4 | Ton slurry comprehensive energy consumption | 25.7+262.6+283.8＝572kg | |
| 5 | Fibrous raw material consumption | 2.5----3 ton |
Consolidated statement 3, table 4 carry out contrasting (to produce 100000 tons of paper pulp production lines per year), and the fast-growing willow pulping process year synthesis energy saving that the present embodiment provides is: 100000 (ton slurry) * (0.572-0.217) ton=35500 ton mark coal; Year saves fibrous raw material resource: 100000 (ton slurry) * (2.7-1.5) ton=120,000 ton; Annual water-saving amount is: 100000 (ton slurry) * (100-7) ton=930,000 ton.
The above signature coal refers to amounts to standard coal combustion heat value.
Embodiment two
Use the paper technology of fast-growing willow paper pulp as above, it is characterized in that, also comprise step 6: by the paper pulp papermaking in described step 5.
Compared with prior art, a kind of fast-growing willow pulping process described in the application, reaches following effect:
1) a kind of fast-growing willow pulping process described in the application, with water not draining, realizes whole process pollution-free, can greatly reduce the pollutant emission of even substantially stopping in paper technology, while pollutant processing cost is little, also protects environment;
2) a kind of fast-growing willow pulping process described in the application, resource utilization is high, and energy conservation and consumption reduction effects is obvious;
3) a kind of fast-growing willow pulping process described in the application, makes full use of fast-growing willow fiber, realizes resource circulation utilization, and new technology can make full use of fast-growing willow fiber as raw material, can save again a large amount of forest timber resource.
4) a kind of fast-growing willow pulping process described in the application, reduce cost of investment, shorten the construction period, novel technique have high in technological content, input-output ratio is high, the construction period is short, investment instant effect advantage.
The foregoing is only the embodiment of the application, be not limited to the application, for a person skilled in the art, the application can have various modifications and variations.Within all spirit in the application and principle, any amendment done, equivalent replacement, improvement etc., within the right that all should be included in the application.
Claims (9)
1. a fast-growing willow pulping process, is characterized in that, comprises the following steps:
Step 1: fast-growing willow is broken or chip;
Step 2: impregnated in immersion liquid by the product that described step 1 obtains, described immersion liquid comprises Na
2o
2, Na
2s
2o
3, O3, cellulase and oxalic acid dihydrate;
Step 3: the product described step 2 obtained filters, add water the solid obtained after filtration grinding;
Step 4: filter out fiber from the product that described step 3 obtains, and this fiber is washed with water;
Step 5: the product that described step 4 obtains is filtered to obtain the paper pulp of late stage process needs.
2. fast-growing willow pulping process as claimed in claim 1, is characterized in that, in described step 2, the temperature of fast-growing willow dipping is 70-100 degree Celsius.
3. fast-growing willow pulping process as claimed in claim 1, is characterized in that, in described step 2, the temperature of fast-growing willow dipping is 70-90 degree Celsius.
4. fast-growing willow pulping process as claimed in claim 1, is characterized in that, in described step 2, the time of fast-growing willow dipping is 50-90 minute.
5. fast-growing willow pulping process as claimed in claim 1, is characterized in that, also comprise and bleached by described paper pulp in described step 5.
6., as the fast-growing willow pulping process as described in arbitrary in claim 4, it is characterized in that, in described immersion liquid, Na
2o
2mass fraction be 2.5-4.5%, Na
2s
2o
3mass fraction be 1%-3%, O
3mass fraction be the mass fraction of 0.1%-1.3%, cellulase and oxalic acid dihydrate be 0.1%-2%.
7. fast-growing willow pulping process as claimed in claim 6, is characterized in that, in described immersion liquid, and Na
2o
2mass fraction be 3-4%, Na
2s
2o
3mass fraction be 1%-3%, O
3mass fraction be the mass fraction of 0.1%-0.8%, cellulase and oxalic acid dihydrate be 0.1%-1%.
8. fast-growing willow pulping process as claimed in claim 7, is characterized in that, in described immersion liquid, and Na
2o
2mass fraction be 3.5%, Na
2s
2o
3mass fraction be 2%, O
3mass fraction be 0.5%, the mass fraction of cellulase and oxalic acid dihydrate is 0.7%.
9. use the paper technology as the fast-growing willow paper pulp as described in arbitrary in claim 1-8, it is characterized in that, also comprise step 6: by the paper pulp papermaking in described step 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649598.1A CN105386351B (en) | 2015-10-09 | 2015-10-09 | A kind of fast-growing willow pulping process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649598.1A CN105386351B (en) | 2015-10-09 | 2015-10-09 | A kind of fast-growing willow pulping process |
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| Publication Number | Publication Date |
|---|---|
| CN105386351A true CN105386351A (en) | 2016-03-09 |
| CN105386351B CN105386351B (en) | 2018-08-10 |
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| CN201510649598.1A Expired - Fee Related CN105386351B (en) | 2015-10-09 | 2015-10-09 | A kind of fast-growing willow pulping process |
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| CN111996830A (en) * | 2020-09-04 | 2020-11-27 | 江苏好健康新材料有限公司 | Production process of fiber composite material household paper |
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| WO2000035588A1 (en) * | 1998-12-17 | 2000-06-22 | Metso Paper, Inc. | Method and production plant for the manufacture of fibrous material |
| CN1818157A (en) * | 2006-01-23 | 2006-08-16 | 青岛大学 | Natural plant fibre extraction by alkali oxidation |
| CN101403140A (en) * | 2008-10-18 | 2009-04-08 | 苏宗梅 | Plant fiber cleaning production and waste cyclic utilization method |
| CN104562820A (en) * | 2013-10-09 | 2015-04-29 | 杜淑卿 | Papermaking pulping technological process standard |
| CN104798642A (en) * | 2015-03-25 | 2015-07-29 | 广西中豪永晟投资发展有限公司 | Intermediate propagation method of bamboo-willow |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000035588A1 (en) * | 1998-12-17 | 2000-06-22 | Metso Paper, Inc. | Method and production plant for the manufacture of fibrous material |
| CN1818157A (en) * | 2006-01-23 | 2006-08-16 | 青岛大学 | Natural plant fibre extraction by alkali oxidation |
| CN101403140A (en) * | 2008-10-18 | 2009-04-08 | 苏宗梅 | Plant fiber cleaning production and waste cyclic utilization method |
| CN104562820A (en) * | 2013-10-09 | 2015-04-29 | 杜淑卿 | Papermaking pulping technological process standard |
| CN104798642A (en) * | 2015-03-25 | 2015-07-29 | 广西中豪永晟投资发展有限公司 | Intermediate propagation method of bamboo-willow |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111996830A (en) * | 2020-09-04 | 2020-11-27 | 江苏好健康新材料有限公司 | Production process of fiber composite material household paper |
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