CN102041572B - Method for manufacturing viscose fibers by ultrasonic polymerization reduction of cotton pulp - Google Patents
Method for manufacturing viscose fibers by ultrasonic polymerization reduction of cotton pulp Download PDFInfo
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Abstract
The invention provides a method for manufacturing viscose fibers by ultrasonic polymerization reduction of cotton pulp, which is a method for producing the viscose fibers directly from the cotton pulp by ultrasonic polymerization reduction of an ultrasonic polymerization reduction pipe. The method comprises the following steps of: replacing the traditional reaction kettle by using the ultrasonic polymerization reduction pipe, and soaking the cotton pulp into alkali to obtain paste; performing polymerization reduction on the paste under the action of an ultrasonic instrument; and squeezing the paste after the polymerization reduction to obtain alkali fibers, and finally preparing the alkali fibers into the viscose fibers. The method overcomes the defects of the prior art, and has more uniform polymerization reduction, low energy consumption, a little equipment, small floor space and stable product quality; and the polymerization reduction effect of ultrasonic on a polymer is applied in the manufacturing of the viscose fibers for the first time, so the polymerization reduction method in the polymerization reduction manufacturing of the viscose fibers is enriched.
Description
Technical field
The invention belongs to viscose and make the field, relate to the method for making viscose with the cotton pulp dregs of rice, using ultrasound falls and gathers method is made viscose with the cotton pulp dregs of rice method specifically.
Technical background
Cellulosicly fall that to gather (the reduction degree of polymerization) be indispensable processing step in viscose glue is produced; Have only the production requirement that to a certain degree could satisfy follow-up viscose that is reduced to, and fall the uniformity of gathering therein and fall that to gather degree be that the key of gathering falls in cellulose plant cellulose.
Cellulosic the falling of preparation viscose glue gathered method and had: aerobic falls to gather to fall with alkali and gathers.Fall with aerobic in the practice that to gather be main, and alkali falls that to gather temperature requirement higher relatively and bigger to the infringement of cellulose primary characteristic, therefore less use.
200810044654.9 the patent documentations such as degrading and polymerizing technology of the method for the production method of the method for preparing dissolved pulp by oxidative degradation of linters, 200810044655.3 dissolving pulp by oxygen continuous digesting method, 200810044656.8 preparing dissolved pulp by oxidative decomposition of paper pulp, a 20081004452.x string all are aerobic to fall and gathers.
20081004452.x: a kind of degrading and polymerizing technology of string, having adopted with the papermaking level pulpboard is raw material, can be used for the dissolving grade plant pulp that viscose is produced through falling in slurrying, the agitated reactor to gather to produce at last.The dissolving grade plant pulp that obtains can directly be used for viscose production.The essence of the disclosed technical scheme of this application for a patent for invention is to be used for the papermaking level string pulpboard that viscose is produced; Through can aerobic at agitated reactor high temperature drop gather the dissolving grade pulp, raw material is treated excessively directly to be used for conventional cellulose viscose manufacturing technique and to obtain viscose.Conventional cellulose viscose manufacturing technique comprises dipping, it is experienced to squeeze, yellow, filtration, deaeration, spinning, refining, oven dry.
Though above-mentioned prior art has effectively utilized the cheap advantage of papermaking level plant pulpboard to produce the dissolving grade pulp of viscose production usefulness, also make viscose produce the production of one-part form production becoming two-part, fall again and gather squeezing to obtain alkali fine obtaining the pulpboard dipping in slurry congee earlier; Carry out fiber production again, 20081004452.x technology still belongs to the pulp denatured technology, will flood like papermaking level string pulpboard earlier; In agitated reactor, carrying out the high pressure aerobic then falls and gathers; Fall and gather back squeezing acquisition alkali fibre, then just with the fine viscose of producing of alkali, though the sex change of pulp is connected with viscose production mutually; But because it falls collecting process and in the agitated reactor of high temperature aerobic, carries out; Make to there is many drawbacks, these drawbacks also are that aerobic falls and gathers common problem, mainly comprise:
One, fall gather inhomogeneous: because the agitated reactor volume is big, it is many to stir the dead angle, cause stirring uneven; And slurry congee participation reaction can not be evenly infiltrated in the adding of oxygen, finally causes falling and gathers inequality;
Two, the agitated reactor floor space is big, and needs compressed air and hot environment, makes that whole cellulose viscose manufacturing technique process becomes huge, consuming time, equipment is many, to take up an area of plant area big, is not easy to production management;
Three, agitated reactor need of work compressed air and steam, energy consumption is big.
Four, being reflected under high temperature, aerobic, the stirring condition in the agitated reactor, technology controlling and process point is many, the control difficulty is big, causes unstable product quality.
Summary of the invention
The purpose of this invention is to provide a kind of directly with the cotton pulp dregs of rice through the ultrasonic a kind of viscose production method of gathering Guan Jiangju of falling; This method is gathered pipe and has been replaced traditional agitated reactor with ultrasonic falling, that falling of having overcome that above-mentioned prior art exists gathered is inhomogeneous, energy consumption is big, equipment is many, take up an area of the space greatly, the drawback of unstable product quality.
Ultrasonic the falling of the cotton pulp dregs of rice gathered the production method of making viscose, it is characterized in that step is following:
A. the cotton pulp dregs of rice obtain slurry congee through alkali steeping;
B. starch congee in leading to the squeezer process, under the ultrasonoscope effect, accomplish to fall and gather hyperacoustic power 0.5KW～2.5KW, frequency of ultrasonic 20～60KHz;
C. fall and gather back squeezing acquisition alkali fibre;
D. with the fine viscose of producing of alkali.
Fall gather principle be ultrasonic/sonic wave to high molecular degradation, macromolecule degradable under the ultrasonic wave effect is a monomer, cellulose (glycan) reaches at ultrasonotomography that degradable is a monose under certain hour and the intensity here.
Ultrasonoscope in the said B operation can adopt the aufbauprinciple of prior art; Mainly constitute by excusing from death generation mechanism and ultrasound emission mechanism; Existing ultrasonoscope has all kinds, and the present invention does not repel any, and key is ultrasound emission mechanism in the ultrasonoscope; It is outside that it is arranged on slurry congee pipeline, and slurry congee is accomplished to fall in leading to the squeezer process and gathered.A kind of existing ultrasonoscope, it is ultrasonic generator, output transformer, impedor etc. that excusing from death produces mechanism, ultrasound emission mechanism is ultrasonic transducer, resonance thin slice.The present invention also can adopt other versions, all is prior art.
Said ultrasound emission mechanism (such as on transducer and resonance thin slice) can be strip, it is outside to be distributed in slurry congee pipeline at interval, symmetrically.Can be cannula-like, be coated on slurry congee pipeline outside.Can be a watt shape, two or multi-disc be arranged symmetrically on the slurry congee pipeline.Ultrasound emission mechanism (ultrasonic transducer with resonance thin slice) or and the slurry congee pipeline that covers be called ultrasonic falling in the present invention and gather pipe.
Adopt above ultrasonoscope to fall the operation principle of gathering to be: at first output transformer and impedor carry out the impedance conversion to ultrasonic transducer or ultrasonic generator; The impedance of ultrasonic transducer and the load of ultrasonic generator are complementary; Purpose is to make ultrasonic transducer can accept characteristic frequency signal that supersonic generator sends and through output transformer coil adjustment power output; Ultrasonic generator is converted into direct current to alternating current, drives the oscillator signal that inner HF signal generator produces a CF, then the signal of this CF input ultrasonic transducer; Cause the mechanical oscillation of resonance thin slice; Just can produce the ultrasonic wave of this CF, through control circuit system control output frequency, through output voltage transformer control power output; Can also let slurry congee gather the time controlling to fall through control slurry congee flow velocity and through pump, thereby control be fallen and is gathered degree through ultrasonic circulation.
Said B operation slurry congee flow velocity is 10～30m
3/ hour, duct length is 3m～20m.
To fall the temperature of gathering when pipe be 50 ℃～90 ℃ to the slurry congee of said B operation through ultrasonic, and ultrasonic falling gathered internal diameter of the pipeline 60cm～90cm, and slurry congee concentration is 1.9%～4.1% (mass percent).
Said A operation is accomplished alkali liquid temperature in treating tank: 60 ℃～90 ℃, alkali concn 50g/l～120g/l, slurry congee concentration 1.9%～4.1%, dip time: 40min～70min, effect is: form alkali cellulose, and impurity such as stripping lignin.
Said C operation adopts squeezer that slurry congee is squeezed; It is 60 ℃～80 ℃ that pressing temperature requires; Squeeze pressure 300mbar～700mbar; The fine content 26%～41% (mass percent) of first that alkali after the squeezing is fine, alkali fiber content: 14%～17% (mass percent), fine viscosity: the 9mPa.s～13mPa.s of alkali.
The viscose production process of said D operation comprises the squeezing yellow, obtains viscose glue, and viscose glue obtains viscose, final purification through filtration, deaeration, spinning.
Beneficial effect of the present invention shows:
One, because penetration of ultrasound waves property is strong, add with tube shaped and be wrapped in slurry congee pipe circumference outside, therefore avoided falling the generation that gathers the dead angle;
Two, gather owing to adopting ultrasonic wave to fall, do not need steam and oxygen to participate in reaction, stopped the uneven drawback of reaction;
Three, the ultrasonic wave that adopts of the present invention falls that to gather pipe be to be coated on slurry congee pipe arrives, and it is little to take up room; And, reduced number of devices owing to need not to dispose the equipment that send oxygen and steam again, reduce energy consumption, and made things convenient for production management;
Four, no longer need the reaction down of high temperature, aerobic, stirring condition owing to falling to gather, reduced loaded down with trivial details technology controlling and process point, greatly reduced the control difficulty, guaranteed the stable of product quality.
Five, in the viscose industry, it all is to adopt the boiling mode to fall to gather that falling of slurry congee gathered, and the aerobic that provides like background technology falls to gather to fall with alkali and gathers, and they all have a common ground---boiling, no matter are that textbook or industrial circle all are to adopt identical theory.The present invention is applied to ultrasonic wave in the middle of viscose produces to the effect of gathering of falling of polymer first, has enriched viscose and has fallen the method for gathering in the middle of falling the production that gathers.
The present invention has jumped out traditional cellulose and has fallen and gather theory; Innovation in the viscose glue production industry, adopt ultrasonic wave to fall to gather to cellulose; Having changed traditional cellulose and fallen the mode of gathering, is a kind of new theory study and trial, and has realized comprising above some beyond thought technique effect.
Description of drawings
Fig. 1 obtains the flow sheet before the alkali fibre for the present invention
Fig. 2 gathers the tubular construction schematic diagram for ultrasonic the falling that the present invention adopts
Fig. 3 gathers the appearance structure principle chart for ultrasonic the falling that the present invention adopts
Mark among the figure: 1 hello dregs of rice machine, 2 treating tanks, 3 assistant soakage buckets, 4 slurry congee pipelines, 5 squeezers, 6 ultrasonic falling are gathered pipe (ultrasound emission mechanism), 7 rectifiers, 8 HF signal generators (7,8 belong to ultrasonic generator), 9 impedors and output transformer, 10 ultrasonic transducers, 11 resonance thin slices
Specific embodiments
This patent discloses the cotton pulp dregs of rice has been directly applied to viscose, mainly comprises alkali steeping, assistant soakage, the ultrasonic operations such as gathering Guan Jiangju, squeezing of falling.Step comprises:
The cotton pulp dregs of rice obtain slurry congee through alkali steeping;
Slurry congee gathers the pipe effect under completion and falls and gather ultrasonic falling in leading to the squeezer process;
Fall and gather back squeezing acquisition alkali fibre;
Generate viscose with alkali fiber.
According to some characteristics of the cotton pulp dregs of rice, hyperacoustic power 0.5KW～2.5KW is set, frequency of ultrasonic 20～60KHz is advisable.
Embodiment is following:
Concrete processing step is following:
One, average degree of polymerization is placed on greater than 1000 the cotton pulp dregs of rice feeds on the dregs of rice machine, set certain rate of feeding (25kg/min), add concentration 75g/l again, temperature is 60 ℃～90 ℃ a alkali lye, and flux of alkaline liquor is 10m
3/ h～20m
3, its objective is the stripping of quickening lignin and impurity in the cotton pulp dregs of rice, then through stirring action, smash pulp with alkali lye and fully to mix, be mixed with solid-state and liquid mixture, be referred to as to starch congee, this operation of title is to flood on the technology.
Effect: make cotton pulp dregs of rice raw material become solid and liquid mixture, be called dipping on the technology, the β-Xian Weisu of stripping simultaneously improves alpha fibre content, produces alkali cellulose.
Control parameter: alkali liquid temperature: 75 ± 15 ℃ of concentration of lye: 75g/l
Slurry congee concentration: 3.5 ± 2% (mass percent) dip time: 30 ± 20min
Two, make past squeezer to the slurry congee of assistant soakage bucket through pump and squeeze, under ultrasonication, accomplish to fall simultaneously and gather.
Effect: continue to generate alkali cellulose and impurity such as stripping hemicellulose, lignin, accomplish to fall simultaneously and gather operation, improve the reactivity worth of alkali cellulose.
Control parameter: slurry congee flow velocity: 10m
3/ h ultrasonic power: 2.0KW
Duct length is: 10m supersonic frequency: 20KHz
The slurry congee that three, will fall after gathering squeezes with squeezer, and the material that squeezes out is divided into two parts, and a part is being mingled with lacks part alkali lye, and another part is solid and the mixtures of liquids that has extruded excessive moisture, is called the alkali fibre on the technology.Precomminution and fine powder through the squeezer outlet are broken, get into the yellow system then and carry out yellow, and deaeration, spinning etc. obtain viscose, final purification then.
Effect: separate alkali cellulose and alkali lye.
Control parameter: pressing temperature: 60 ± 3 ℃ of squeeze pressure: 500 ± 50mbar
The fine content of the fine first of alkali: the fine alkali content of 30 ± 1% alkali: 16 ± 1%
Fine viscosity: the 9.5 ± 1mP.s of alkali
Four, the fine viscose production system that gets into of satisfactory alkali.Viscose comprises short silk and long filament, and the production process of viscose can adopt common process, like dipping, squeezing, experienced, yellow, obtains viscose glue, and viscose glue obtains viscose, final purification through filtration, deaeration, spinning.
Concrete processing step is following:
One, average degree of polymerization is placed on greater than 800 the cotton pulp dregs of rice feeds on the dregs of rice machine, set certain rate of feeding (25kg/min), add concentration 70g/l again, temperature is 60 ℃～90 ℃ a alkali lye, and flux of alkaline liquor is 10m
3/ h～20m
3, its objective is the stripping of quickening lignin and impurity in the cotton pulp dregs of rice.Pass through stirring action then, smash pulp with alkali lye and fully mix, be mixed with solid-state and liquid mixture, be referred to as to starch congee, claim on the technology that this operation is dipping.
Effect: make cotton pulp dregs of rice raw material become solid and liquid mixture, be called dipping on the technology, the β-Xian Weisu of stripping simultaneously improves alpha fibre content, produces alkali cellulose.
Control parameter: alkali liquid temperature: 70 ± 15 ℃ of concentration of lye: 70 ℃ of g/l
Slurry congee concentration: 3.5 ± 2% (mass percent) dip time: 30 ± 20min
Two, make past squeezer to the slurry congee of assistant soakage bucket through pump and squeeze, under ultrasonication, accomplish to fall simultaneously and gather.
Effect: continue to generate alkali cellulose and impurity such as stripping hemicellulose, lignin, accomplish to fall simultaneously and gather operation, improve the reactivity worth of alkali cellulose.
Control parameter: slurry congee flow velocity: 30m
3/ h ultrasonic power: 0.5KW
Duct length is: 8m supersonic frequency: 60KHz
The slurry congee that three, will fall after gathering squeezes with squeezer, and the material that squeezes out is divided into two parts, and a part is being mingled with lacks part alkali lye, and another part is solid and the mixtures of liquids that has extruded excessive moisture, is called the alkali fibre on the technology.Precomminution and fine powder through the squeezer outlet are broken, get into the yellow system then and carry out yellow, and deaeration, spinning etc. obtain viscose, final purification then.
Effect: separate alkali cellulose and alkali lye.
Control parameter: pressing temperature: 60 ± 3 ℃ of squeeze pressure: 500 ± 50mbar
The fine content of the fine first of alkali: the fine alkali content of 28 ± 1% alkali: 16 ± 1%
Fine viscosity: the 9 ± 1mP.s of alkali
Four, the fine viscose production system that gets into of satisfactory alkali.Viscose comprises short silk and long filament, and the production process of viscose can adopt common process, like dipping, squeezing, experienced, yellow, obtains viscose glue, and viscose glue obtains viscose, final purification through filtration, deaeration, spinning.
Concrete processing step is following:
One, average degree of polymerization is placed on greater than 1200 the cotton pulp dregs of rice feeds on the dregs of rice machine, set certain rate of feeding (25kg/min), add concentration 100g/l again, temperature is 60 ℃～90 ℃ a alkali lye, and flux of alkaline liquor is 10m
3/ h～20m
3, its objective is the stripping of quickening lignin and impurity in the cotton pulp dregs of rice.Pass through stirring action then, smash pulp with alkali lye and fully mix, be mixed with solid-state and liquid mixture, be referred to as to starch congee, claim on the technology that this operation is dipping.
Effect: make cotton pulp dregs of rice raw material become solid and liquid mixture, be called dipping on the technology, the β-Xian Weisu of stripping simultaneously improves alpha fibre content, produces alkali cellulose.
Control parameter: alkali liquid temperature: 75 ± 15 ℃ of concentration of lye: 100g/l
Slurry congee concentration: 3.5 ± 2% (mass percent) dip time: 30 ± 20min
Two, make past squeezer to the slurry congee of assistant soakage bucket through pump and squeeze, under ultrasonication, accomplish to fall simultaneously and gather.
Effect: continue to generate alkali cellulose and impurity such as stripping hemicellulose, lignin, accomplish to fall simultaneously and gather operation, improve the reactivity worth of alkali cellulose.
Control parameter: slurry congee flow velocity: 20m
3/ h ultrasonic power: 2.5KW
Duct length is: 6m supersonic frequency: 40KHz
The slurry congee that three, will fall after gathering squeezes with squeezer, and the material that squeezes out is divided into two parts, and a part is being mingled with lacks part alkali lye, and another part is solid and the mixtures of liquids that has extruded excessive moisture, is called the alkali fibre on the technology.Precomminution and fine powder through the squeezer outlet are broken, get into the yellow system then and carry out yellow, and deaeration, spinning etc. obtain viscose, final purification then.
Effect: separate alkali cellulose and alkali lye.
Control parameter: pressing temperature: 60 ± 3 ℃ of squeeze pressure: 500 ± 50mbar
The fine content of the fine first of alkali: the fine alkali content of 32 ± 1% alkali: 16 ± 1%
Fine viscosity: the 9 ± 1mP.s of alkali
Four, the fine viscose production system that gets into of satisfactory alkali.Viscose comprises short silk and long filament, and the production process of viscose can adopt common process, like dipping, squeezing, experienced, yellow, obtains viscose glue, and viscose glue obtains viscose, final purification through filtration, deaeration, spinning.
Concrete processing step is following:
One, average degree of polymerization is placed on greater than 1000 the cotton pulp dregs of rice feeds on the dregs of rice machine, set certain rate of feeding (20kg/min), add concentration 75g/l～95g/l again, temperature is 60 ℃～90 ℃ a alkali lye, and flux of alkaline liquor is 10m
3/ h～20m
3, its objective is the stripping of quickening lignin and impurity in the cotton pulp dregs of rice.Pass through stirring action then, smash pulp with alkali lye and fully mix, be mixed with solid-state and liquid mixture, be referred to as to starch congee, claim on the technology that this operation is dipping.
Effect: make cotton pulp dregs of rice raw material become solid and liquid mixture, be called dipping on the technology, the β-Xian Weisu of stripping simultaneously improves alpha fibre content, produces alkali cellulose.
Control parameter: alkali liquid temperature: 75 ± 15 ℃ of concentration of lye: 80 ± 15g/l
Slurry congee concentration: 3.5 ± 2% (mass percent) dip time: 30 ± 20min
Two, make past squeezer to the slurry congee of assistant soakage bucket through pump and squeeze, under ultrasonication, accomplish to fall simultaneously and gather.
Effect: continue to generate alkali cellulose and impurity such as stripping hemicellulose, lignin, accomplish to fall simultaneously and gather operation, improve the reactivity worth of alkali cellulose.
Control parameter: slurry congee flow velocity: 15m
3/ h ultrasonic power: 1.0KW
Duct length is: 9m supersonic frequency: 45KHz
The slurry congee that three, will fall after gathering squeezes with squeezer, and the material that squeezes out is divided into two parts, and a part is being mingled with lacks part alkali lye, and another part is solid and the mixtures of liquids that has extruded excessive moisture, is called the alkali fibre on the technology.Precomminution and fine powder through the squeezer outlet are broken, get into the yellow system then and carry out yellow, and deaeration, spinning etc. obtain viscose, final purification then.
Effect: separate alkali cellulose and alkali lye.
Control parameter: pressing temperature: 60 ± 3 ℃ of squeeze pressure: 400 ± 50mbar
The fine content of the fine first of alkali: the fine alkali content of 30.5 ± 1% alkali: 16 ± 1%
Fine viscosity: the 9.5 ± 1mP.s of alkali
Four, the fine viscose production system that gets into of satisfactory alkali.Viscose comprises short silk and long filament, and the production process of viscose can adopt common process, like dipping, squeezing, experienced, yellow, obtains viscose glue, and viscose glue obtains viscose, final purification through filtration, deaeration, spinning.
Embodiment 5: ultrasonic falling gathered
The aufbauprinciple of the used ultrasonoscope of the above embodiment of the present invention is not limited to following structure, but all from prior art, by formations such as ultrasonic generator (rectifier, HF signal generator), output transformer, impedor, ultrasonic transducer, resonance thin slices.As shown in Figure 3.
The ultrasonic principle of gathering of falling is: at first output transformer and impedor carry out the impedance conversion to ultrasonic transducer or ultrasonic generator; The impedance of ultrasonic transducer and the load of ultrasonic generator are complementary; Purpose is to make ultrasonic transducer can accept characteristic frequency signal that supersonic generator sends and through output transformer coil adjustment power output, ultrasonic generator is converted into direct current to alternating current, drives the oscillator signal that internal circuit produces a CF; Then the signal of this CF input ultrasonic transducer; Just can produce the ultrasonic wave of this CF, through control circuit system control output frequency, through output voltage transformer control power output; Fall through the control of control slurry congee flow velocity and to gather the time, thereby control is fallen and gathered degree.
To pipeline entoplasm congee emission ultrasonic be ultrasonic transducer, ultrasonic transducer is enclosed on the slurry congee pipeline, slurry congee is accomplished to fall in leading to the squeezer process and is gathered.
More than the principle of the employed ultrasonoscope of each embodiment can adopt prior art; The present invention does not limit its structure; Key is in slurry congee pipeline, to send that ultrasonic (direction is advisable around slurry congee pipeline with cross section; Tangential slurry congee) ultrasound emission mechanism is ultrasonic transducer and resonance thin slice in the present embodiment.
According to actual conditions such as manufacturing technique and mounting conditions, can ultrasonic transducer and/or resonance thin slice be made suitable shapes, can be strip, it is outside that the compartment of terrain is distributed in slurry congee pipeline, like Fig. 2 a.Can be cannula-like, be coated on slurry congee pipeline outside, like Fig. 2 b.Can be a watt shape, two or multi-disc be attached on the slurry congee pipeline and link together, like Fig. 2 c.Other shapes that comprise above shape, ultrasonic transducer, resonance thin slice are called ultrasonic falling in the present invention and gather pipe, and a whole set of ultrasonoscope is called ultrasonic falling and gathers appearance.
And according to conditions such as output, slurry congee flow velocity, slurry congee duct lengths, the length of ultrasonic transducer is set suitably, like 0.5-2M, length hour also can be on slurry congee pipeline the multiple spot setting fall and gather pipe or a whole set of ultrasonoscope.
Also can gather the time falling ultrasonic the falling that the flow velocity that gathers in the pipe and cycle-index control slurry congee in addition through control slurry congee, and impurity such as continuation stripping lignin.
Claims (7)
1. ultrasonic the falling of the cotton pulp dregs of rice gathered the production method of making viscose, and step is following:
A. the cotton pulp dregs of rice obtain slurry congee through alkali steeping;
B. starch congee in leading to the squeezer process, under the ultrasonoscope effect, accomplish to fall and gather hyperacoustic power 0.5KW～2.5KW, frequency of ultrasonic 20～60KHz;
C. fall and gather back squeezing acquisition alkali fibre;
D. generate viscose with alkali fiber;
It is characterized in that: slurry congee flow velocity is 10～30m
3/ hour, to fall the temperature of gathering when pipe be 50 ℃～90 ℃ to slurry congee through ultrasonic, slurry congee concentration mass percent is 1.9%～4.1%.
2. ultrasonic the falling of the cotton pulp dregs of rice according to claim 1 gathered the production method of making viscose, it is characterized in that:
The effect of said A operation is to form alkali cellulose; And stripping comprises the impurity of lignin; The A operation is accomplished in treating tank, alkali liquid temperature: 60 ℃～90 ℃, alkali concn 50g/l～120g/l, slurry congee concentration 1.9%～4.1%, dip time: 40min～70min;
Said C operation adopts squeezer that slurry congee entrance pressure is pressed; It is 60 ℃～80 ℃ that pressing temperature requires; Squeeze pressure 300mbar～700mbar; The fine content mass percent 26%～41% of first that alkali after the squeezing is fine, alkali fiber content mass percent: fine viscosity: the 9mPa.s～13mPa.s of alkali 14%～17%;
Said D operation comprises the squeezing yellow, obtains viscose glue, and viscose glue obtains viscose, final purification through filtration, deaeration, spinning.
3. ultrasonic the falling of the cotton pulp dregs of rice according to claim 1 gathered the production method of making viscose, it is characterized in that: said ultrasonoscope comprises ultrasonic generation mechanism and ultrasound emission mechanism, and it is outside that ultrasound emission mechanism is arranged on slurry congee pipeline.
4. ultrasonic the falling of the cotton pulp dregs of rice according to claim 3 gathered the production method of making viscose, it is characterized in that: said ultrasound emission mechanism is a strip, and it is outside to be distributed in slurry congee pipeline at interval, symmetrically.
5. ultrasonic the falling of the cotton pulp dregs of rice according to claim 3 gathered the production method of making viscose, it is characterized in that: said ultrasound emission mechanism is a cannula-like, and it is outside to be coated on slurry congee pipeline.
6. ultrasonic the falling of the cotton pulp dregs of rice according to claim 3 gathered the production method of making viscose, it is characterized in that: said ultrasound emission mechanism is a tile, and two or multi-disc are arranged symmetrically on the slurry congee pipeline.
7. gather the production method of making viscose according to ultrasonic the falling of the described cotton pulp dregs of rice of claim, it is characterized in that: said ultrasonic generation mechanism comprises ultrasonic generator, output transformer, impedor, and ultrasound emission mechanism is ultrasonic transducer, resonance thin slice.
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| JP2009108426A (en) * | 2007-10-26 | 2009-05-21 | Futamura Chemical Co Ltd | Method for producing starch fiber |
| CN101602810A (en) * | 2008-06-10 | 2009-12-16 | 宜宾海丝特纤维有限责任公司 | Plant fiber degrading and polymerizing technology |
| CN101603210A (en) * | 2008-06-10 | 2009-12-16 | 宜宾海丝特纤维有限责任公司 | String is made the production method of viscose |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009108426A (en) * | 2007-10-26 | 2009-05-21 | Futamura Chemical Co Ltd | Method for producing starch fiber |
| CN101602810A (en) * | 2008-06-10 | 2009-12-16 | 宜宾海丝特纤维有限责任公司 | Plant fiber degrading and polymerizing technology |
| CN101603210A (en) * | 2008-06-10 | 2009-12-16 | 宜宾海丝特纤维有限责任公司 | String is made the production method of viscose |
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| 唐爱民.超声波作用下纤维素纤维结构与性质的研究.《华南理工大学工学博士学位论文》.2006,(第11期),47. * |
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