CN103603066A - Method for producing coarse denier flat viscose yarn - Google Patents
Method for producing coarse denier flat viscose yarn Download PDFInfo
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- CN103603066A CN103603066A CN201310630418.6A CN201310630418A CN103603066A CN 103603066 A CN103603066 A CN 103603066A CN 201310630418 A CN201310630418 A CN 201310630418A CN 103603066 A CN103603066 A CN 103603066A
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- coagulation forming
- washing
- temperature
- carbon disulfide
- viscose glue
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- 229920000297 Rayon Polymers 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 claims abstract description 174
- 230000015271 coagulation Effects 0.000 claims abstract description 102
- 238000005345 coagulation Methods 0.000 claims abstract description 102
- 238000005406 washing Methods 0.000 claims abstract description 75
- 238000000034 method Methods 0.000 claims abstract description 40
- 238000009987 spinning Methods 0.000 claims abstract description 37
- 230000008569 process Effects 0.000 claims abstract description 20
- 238000004061 bleaching Methods 0.000 claims abstract description 11
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 244000261422 Lysimachia clethroides Species 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 230000001112 coagulating effect Effects 0.000 claims description 59
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 54
- 239000003292 glue Substances 0.000 claims description 42
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 32
- 238000006477 desulfuration reaction Methods 0.000 claims description 31
- 230000023556 desulfurization Effects 0.000 claims description 31
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000008234 soft water Substances 0.000 claims description 24
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 18
- 235000011152 sodium sulphate Nutrition 0.000 claims description 18
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 18
- 229960001763 zinc sulfate Drugs 0.000 claims description 18
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 18
- 230000002378 acidificating effect Effects 0.000 claims description 11
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 10
- 239000007844 bleaching agent Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 10
- 238000010411 cooking Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 239000006210 lotion Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 19
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 37
- 238000007670 refining Methods 0.000 description 20
- 239000000835 fiber Substances 0.000 description 9
- 238000000465 moulding Methods 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 7
- 230000008676 import Effects 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 238000004064 recycling Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- XDAHMMVFVQFOIY-UHFFFAOYSA-N methanedithione;sulfane Chemical compound S.S=C=S XDAHMMVFVQFOIY-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 241001504664 Crossocheilus latius Species 0.000 description 1
- 241000208202 Linaceae Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000010198 maturation time Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention relates to a method for producing thick denier flat viscose filament, which comprises the steps of pumping viscose into a candle filter through a metering pump, filtering, feeding the filtered viscose into a spinneret through a gooseneck pipe for spinning, feeding the spun filament into a primary coagulation bath for primary coagulation forming, then guiding the filament into a secondary coagulation forming bath by a filament guiding mechanism for secondary coagulation forming, feeding the filament into a washing bath for primary washing after the secondary coagulation forming, sequentially regenerating, washing, desulfurizing, bleaching, adjusting the pH value, oiling and drying the filament on a conveying net of a combined refiner in parallel after the primary washing, and finally forming into a cylinder or a skein, wherein carbon disulfide is recovered from the filament during the primary coagulation forming and the secondary coagulation forming. The invention recycles carbon disulfide, the strength and the elongation of the viscose coarse denier flat yarn manufactured by the process completely meet the requirements, and the viscose coarse denier flat yarn is very beneficial to the development of downstream markets.
Description
Technical field
The present invention relates to viscose production field, relate in particular to a kind of production technology of flat filament.
Background technology
Flat filament has been concentrated the premium properties of common dimension card fiber and flax fibre, and fabric is smooth, feel bullet is soft, is rich in third dimension, comfortable pleasant; And there is moisture absorption and rapid heat dissipation, be easier to dyeing feature.
Application number is 200610021657.1, the Chinese invention patent application that open day is on March 5th, 2008 discloses a kind of super coarse denier flat filament and preparation method thereof, its disclosed preparation method comprises preparation mill base, degree of depth maturation, the maturation time is 12～15 hours, degree of ripeness 8.0 ± 1.0ml, deaeration, spinning machine spinning, washes, is dried into cylinder.It is 10～20 that the method can obtain monofilament number, and monfil degree is 60～120D, and the twist is every meter of 90～110 stone roller.By the method for this Invention Announce, manufacture coarse denier flat filament in coagulation forming process because chemical reaction can produce the pollutants such as hydrogen sulfide and carbon disulfide, and this patent is by the direct high altitude discharge of the exhaust system on production equipment to these pollutants, surrounding environment is caused to very large pollution, and do not realize carbon disulfide recycling use, cause the waste of carbon disulfide, the increase of production cost; Adopt it by one-step coagulating bath to process flat filament, and it by one-step coagulating bath can not make the intensity of coarse denier flat filament, degree of stretching meet the demands, it has limitation to improving intensity, the degree of stretching of coarse denier flat filament bar, is not easy to the exploitation of Downstream Market; Its automaticity is lower, wet strand skeining, hanks tie, passes in and out the operations such as washing immersion slot, dehydration, oven dry and all need manual operation, and employee's labour intensity is larger simultaneously; Continuity is not strong, needs manually frequently to stop, be split into winch when wet strand skeining, is convenient to lower strand, and the lower broken end quantity of product that simultaneously causes of production efficiency increases.
Application number is 200910263475.9, the Chinese invention patent application that open day is on July 14th, 2010 discloses a kind of continuous spinning process for viscose glue heavy denier yarn flat filament, comprise viscose glue measure and shape, washing, dry and become cylinder, viscose glue after metering reacts moulding strand in glass ware forming pipe, the strand of glass ware forming Guan Guanzhong moulding is drawn to sink and is carried out multistage washing by the hold-down roller of multistage sink, the strand of multistage sink end is drawn to steam drying machine by hold-down roller, steam drying machine is dried strand, again the strand after drying is become to cylinder.The present invention completes a plurality of operations on a production line, and technique is optimized, reach shortened process, reduce technological fluctuation, between batch, mass discrepancy is little, reduce broken end, improve yield, reduce costs, improve quality low, reduce the object of labour intensity, but this invention can produce the pollutants such as hydrogen sulfide and carbon disulfide because of chemical reaction in coagulation forming process, and this patent is also by the direct high altitude discharge of the exhaust system on production equipment to these pollutants, surrounding environment is caused to very large pollution, and do not realize carbon disulfide recycling use, cause the waste of carbon disulfide, the increase of production cost, adopt it by one-step coagulating bath to process flat filament, and it by one-step coagulating bath can not make the intensity of coarse denier flat filament, degree of stretching meet the demands, it has limitation to improving intensity, the degree of stretching of coarse denier flat filament bar, is not easy to the exploitation of Downstream Market.
Application number is 201210534100.3, the Chinese invention patent application that open day is on March 20th, 2013 discloses a kind of coarse denier flat filament continuous spinning process, comprise viscose glue measure and shape, washing, dry and become cylinder, strand after moulding is towed on little treatment tube and large treatment tube through bar guide, strand completes successively regeneration on little treatment tube and large treatment tube, washing, desulfurization, adjust pH value, oil, stoving process, again the strand after drying is completed into a technique through acting on of godet roller on winding head, strand adopted foam to scrape sour mode and scrapes off the acid solution on strand before being towed on little treatment tube and large treatment tube.This is invented pollutants such as hydrogen sulfide and carbon disulfide still by the direct high altitude discharge of the exhaust system on production equipment, surrounding environment is caused to very large pollution, and do not realize carbon disulfide recycling use, cause the waste of carbon disulfide, the increase of production cost; Adopt it by one-step coagulating bath to process flat filament, and it by one-step coagulating bath can not make the intensity of coarse denier flat filament, degree of stretching meet the demands, it has limitation to improving intensity, the degree of stretching of coarse denier flat filament bar, is not easy to the exploitation of Downstream Market; This invention all process steps all completes on a set of spinning equipment, although continuity strengthens, spinning efficiency improves, floor space reduces, but complete on a set of spinning equipment just because of this invention refining procedure, refining effect is not fine, the viscose glue flat filament quality of producing is relatively poor.
In sum, when for the production of coarse denier flat filament, there is following shortcoming in above-mentioned patent:
Coarse denier flat filament can produce the pollutants such as carbon disulfide because of chemical reaction in coagulation forming process, and above-mentioned patent is by the direct high altitude discharge of the exhaust system on production equipment to these pollutants, surrounding environment is caused to very large pollution, and do not realize carbon disulfide recycling use, cause the waste of carbon disulfide, the increase of production cost.
Be all to adopt it by one-step coagulating bath to process flat filament, and it by one-step coagulating bath can not make the intensity of coarse denier flat filament, degree of stretching meet the demands, it has limitation to improving intensity, the degree of stretching of coarse denier flat filament bar, is not easy to the exploitation of Downstream Market.
Summary of the invention
In order to overcome above-mentioned defect, the present invention aims to provide the method for the production of thick dawn viscose glue flat filament, the method when manufacturing coarse denier flat filament to carbon disulfide recycling use, no longer direct high altitude discharge, the pollution of minimizing to environment, has also reduced the production cost of enterprise simultaneously; The intensity of the produced viscose coarse denier flat filament of this technique and degree of stretching meet the demands completely, very favourable to the exploitation of Downstream Market.
In order to reach above-mentioned technical purpose, the technical solution used in the present invention is:
Method for the production of thick dawn viscose glue flat filament, it is characterized in that: viscose glue pumps in candle shape filter through measuring pump, filter, viscose glue after filtration enters and in spinning head, sprays silk through gooseneck, the strand of ejection enters and in it by one-step coagulating bath groove, carries out one time coagulation forming, then by thread guide mechanism, imported in secondary coagulation forming groove and carry out secondary coagulation forming, after secondary coagulation forming, enter in rinsing bowl and wash for the first time, after first washing, strand enters associating refiner and arranges and pave, washing, desulfurization, bleaching, adjust Ph value, oil and dry, finally become cylinder or skeining, strand reclaims carbon disulfide when coagulation forming and secondary coagulation forming.
A described coagulation forming coagulating bath comprises sulfuric acid, sodium sulphate and zinc sulfate, and wherein, the content of sulfuric acid is 115～122g/l, and the content of sodium sulphate is 290～320g/l, and zinc sulfate content is 8～10g/l, and the temperature of coagulating bath is 51～54 ℃;
The coagulating bath of described secondary coagulation forming comprises sulfuric acid, and content is 10～20g/l, and secondary coagulation bath temperature is 95 ~ 98 ℃.
The water lotion of described first washing is soft water, and more than in first washing water washing trough, the volume of soft water remains on 2.5m3, the water in rinsing bowl is mobile soft water.
Strand arranges while paving, and liquid used is weakly acidic, and the content of weak acid is 1～3g/l, temperature is 60～80 ℃, and washing adopts the mode of drip washing to wash, and the desulfurizing agent that desulfurization is used is sodium hydroxide solution, its concentration is 0.4～0.6 g/l, desulfurization temperature is 54～60 ℃, and bleaching agent is vulcanized sodium, and its concentration is 3.5～4.5 g/l, the finish oiling is white oil, its concentration is 2.5～3.5 g/l, and upper oil temperature is 35～45 ℃, and bake out temperature is 95～98 ℃.
Reclaim carbon disulfide and adopt high-temperature cooking process to reclaim, its concrete recovery process step is:
Step 1, high temperature become carbon disulfide into gaseous state;
Step 2, the carbon disulfide of gaseous state is piped to and in condensing unit, is condensed into liquid state;
Step 3, liquid carbon disulfide is transported to stand for standby use in storage tank by pipeline.
The fine content 8.9～9.0% of described viscose glue first, viscosity is 42～48 seconds, degree of ripeness is with NH
4cL counts 9～9.5ml, and alkalinity is 4.7～4.9%, and temperature is 17～20 ℃, and minute bubbles are below 25.
1, the present invention replaces an original coagulation forming with twice coagulation forming, adopt twice coagulation forming with respect to a coagulation forming, chemical reaction relaxes, be conducive to the moulding of slice and the raising of intensity, also help the stable of strand degree of stretching simultaneously, twice coagulation forming reaction is also more thorough, and the alkalinity of strand is lower, and the quality that is conducive to strand further improves.Operation is continuous, and production efficiency is improved, and has reduced artificial participation, thereby has reduced end breakage rate, and operation continuity strengthens, and also can reduce end breakage rate, and the defect of less from many aspects broken end occurs.
2, a coagulation forming coagulating bath of the present invention comprises sulfuric acid, sodium sulphate and zinc sulfate, wherein, the content of sulfuric acid is 115～122g/l, the content of sodium sulphate is 290～320g/l, zinc sulfate content is 8～10g/l, the temperature of coagulating bath is 51～54 ℃, and the coagulating bath of secondary coagulation forming comprises sulfuric acid, and content is 10～20g/l.One time coagulation forming reacting phase is solidifying very fast for the solid moulding of secondary, allow the moulding of strand rapid solidification, then pass through the moulding again of secondary coagulation forming, moulding comparatively relaxes and thoroughly, the intensity and the degree of stretching that are conducive to strand, the selection of coagulating bath can guarantee rapid shaping and the Forming Quality of strand.
3, refining of the present invention comprises that shred collecting groove arranges and paves fiber, washing, desulfurization, bleaching, adjust Ph value, oil and dry, shred collecting groove arranges while paving fiber, arrangement liquid used is weakly acidic, content is 1～3g/l, temperature is 60～80 ℃, washing adopts the mode of drip washing to wash, the desulfurizing agent that desulfurization is used is sodium hydroxide solution, its concentration is 0.4～0.6 g/l, desulfurization temperature is 54～60 ℃, bleaching agent is vulcanized sodium, its concentration is 3.5～4.5 g/l, the finish oiling is white oil, its concentration is 2.5～3.5 g/l, upper oil temperature is 35～45 ℃, bake out temperature is 95～98 ℃.The content of regenerated liquid weak acid is that 10～20g/l can guarantee regeneration liquid level weakly acidic condition, allow strand moulding again, make strand surface quality good, even thickness, regeneration temperature is controlled at 95～98 ℃, regenerated liquid is favorable regeneration effect in this temperature range, and the step that washing adopts the mode of drip washing to realize washing water and washing liquid recycles, relative less to the consumption of the pollution of environment and resource.Strand is after these parameter request refinings, and strand surface quality is high, and intensity and degree of stretching are all significantly improved.
4, the present invention reclaims carbon disulfide and adopts high-temperature cooking process to reclaim first high temperature carbon disulfide is become to gaseous state, then the carbon disulfide of gaseous state is piped in condensing unit and is condensed into liquid state, finally liquid carbon disulfide is transported to stand for standby use in storage tank by pipeline.Recovery process is simple, is easy to control, and cost recovery is lower, and the carbon disulfide being recovered to is comparatively pure, reclaims comparatively thorough.
5, coagulation forming of the present invention is that the effect by measuring pump and fork is sent in candle shape filter by viscose glue, after candle shape filter filters by the effect of gooseneck, enter into spinning head, described spinning head is placed in coagulating tank for the first time, and viscose glue enters for the first time and carries out coagulation forming one time in coagulating tank after spinning head ejection.With respect to prior art scheme, reduced the replacing number of times of filter, candle shape filter filtration yield is large and be not easy obstruction, and the use of candle shape filter is conducive to the operation of production process more.
6, the present invention imports to the strand after the first coagulation forming in secondary coagulation forming groove and carries out secondary coagulation forming through the effect of thread guide mechanism.Can continue like this to change strand degree of stretching; Can prevent the quality fluctuation that changes and cause because of viscose glue raw material, by secondary coagulation forming, adjust and cover the shortage simultaneously.Simultaneously thread guide mechanism at grade, the more convenient operation of operating personnel.
7, strand traction by drawing machine from coagulating bath out for the second time enters into rinsing bowl and washes; Strand is produced continuously, need not interrupt, and directly first carries out by seal wire, entering into refiner after elementary removal of impurities and washs, and has increased the continuity of producing, and has reduced the quantity of broken end.Strand from the rinsing bowl of previous cleaning is processed, under the effect of godet roller, enter associating refiner carry out desulfurization, bleaching, on wet goods PROCESS FOR TREATMENT, and the cleaning solution of each erect-position is carried out to recycling use, the minimizing discharge of sewage and the consumption of resource.After strand after refining treatment enters drying machine drying under the effect of godet roller, become cylinder or skeining, then classification warehouse-in is sold.
8, the present invention adopts the associating refiner of producing viscose staple fibre to realize the refining procedure in this technique, thereby make whole operation production serialization, improved production efficiency, in order to meet the requirement of associating refining, before carrying out refiner washing, by shred collecting groove, arrange and pave fiber, shred collecting groove arranges while paving fiber, arrangement liquid used is weakly acidic, content is 1～3g/l, temperature is 60～80 ℃, , washing adopts the mode of drip washing to wash, the desulfurizing agent that desulfurization is used is sodium hydroxide solution, its concentration is 0.4～0.6 g/l, desulfurization temperature is 54～60 ℃, bleaching agent is vulcanized sodium, its concentration is 3.5～4.5 g/l, the finish oiling is white oil, its concentration is 2.5～3.5 g/l, upper oil temperature is 35～45 ℃, bake out temperature is 95～98 ℃, guarantee normally carrying out of associating refining.
The specific embodiment
Embodiment 1
Making viscose
The fine content 8.9% of viscose glue first of preparation, viscosity is 48 seconds, degree of ripeness is with NH
4cL counts 9.5ml, and alkalinity is 4.7%, and temperature is 17 ℃, and minute bubbles are below 25.
A coagulation forming
Viscose glue is sent in candle shape filter by the effect of measuring pump and fork, after candle shape filter filters by the effect of gooseneck, be sent in spinning head, described spinning head is placed in coagulating tank for the first time, and viscose glue enters for the first time and carries out coagulation forming one time in coagulating tank after spinning head ejection.When a coagulation forming, reclaim carbon disulfide.
A coagulation forming coagulating bath comprises sulfuric acid, sodium sulphate and zinc sulfate, and wherein, the content of sulfuric acid is 115g/l, and the content of sodium sulphate is 320g/l, and zinc sulfate content is 10g/l, and the temperature of coagulating bath is 51 ℃.
Secondary coagulation forming
Strand after the first coagulation forming imports in secondary coagulation forming groove and carries out secondary coagulation forming through the effect of the thread guide mechanisms such as traveller, spinning disc and seal wire angle.The coagulating bath of secondary coagulation forming comprises sulfuric acid, and content is 20g/l, and temperature is 95 ℃.When secondary coagulation forming, reclaim carbon disulfide.
First washing
Strand traction by drawing machine from coagulating bath out for the second time enters into rinsing bowl and washes for the first time, and the water lotion of first washing is soft water, and more than in first washing water washing trough, the volume of soft water remains on 2.5m3, the water in rinsing bowl is mobile soft water.
Refining
Strand enters associating refiner and arranges and pave from the rinsing bowl of previous cleaning is processed under the effect of godet roller, washing, desulfurization, bleaching, adjust Ph value, oil and dry, when shred collecting groove arranges, liquid is weakly acidic, the content of weak acid is 1g/l, temperature is 60 ℃, washing adopts the mode of drip washing to wash, the desulfurizing agent that desulfurization is used is sodium hydroxide solution, its concentration is 0.6 g/l, desulfurization temperature is 60 ℃, bleaching agent is vulcanized sodium, its concentration is 4.5 g/l, the finish oiling is white oil, its concentration is 3.5 g/l, upper oil temperature is 35 ℃, bake out temperature is 95 ℃.
Become cylinder or skeining
After strand after refining treatment enters drying machine drying under the effect of godet roller, become cylinder or skeining, then classification warehouse-in is sold.
The dry of the strand obtaining is by force 0.78 CN/dtex, and degree of stretching is 11.5%.
Reclaim carbon disulfide and adopt high-temperature cooking process to reclaim, its concrete recovery process step is:
Step 1, high temperature become carbon disulfide into gaseous state;
Step 2, the carbon disulfide of gaseous state is piped to and in condensing unit, is condensed into liquid state;
Step 3, liquid carbon disulfide is transported to stand for standby use in storage tank by pipeline.
Embodiment 2
Making viscose
The fine content 8.9% of viscose glue first of preparation, viscosity is 43 seconds, degree of ripeness is with NH
4cL counts 9.0ml, and alkalinity is 4.7%, and temperature is 18 ℃, and minute bubbles are below 25.
A coagulation forming
Viscose glue is sent in candle shape filter by the effect of measuring pump and fork, after candle shape filter filters by the effect of gooseneck, be sent in spinning head, described spinning head is placed in coagulating tank for the first time, and viscose glue enters for the first time and carries out coagulation forming one time in coagulating tank after spinning head ejection.When a coagulation forming, reclaim carbon disulfide.
A coagulation forming coagulating bath comprises sulfuric acid, sodium sulphate and zinc sulfate, and wherein, the content of sulfuric acid is 118g/l, and the content of sodium sulphate is 300g/l, and zinc sulfate content is 10g/l, and the temperature of coagulating bath is 53 ℃.
Secondary coagulation forming
Strand after the first coagulation forming imports in secondary coagulation forming groove and carries out secondary coagulation forming through the effect of the thread guide mechanisms such as traveller, spinning disc and seal wire angle.The coagulating bath of secondary coagulation forming comprises sulfuric acid, and content is 12g/l, and temperature is 96 ℃.When secondary coagulation forming, reclaim carbon disulfide.
First washing
Strand traction by drawing machine from coagulating bath out for the second time enters into rinsing bowl and washes for the first time, and the water lotion of first washing is soft water, and more than in first washing water washing trough, the volume of soft water remains on 2.5m3, the water in rinsing bowl is mobile soft water.
Refining
Strand enters associating refiner and arranges and pave from the rinsing bowl of previous cleaning is processed under the effect of godet roller, washing, desulfurization, bleaching, adjust Ph value, oil and dry, when shred collecting groove arranges, liquid is weakly acidic, the content of weak acid is 1g/l, temperature is 65 ℃, washing adopts the mode of drip washing to wash, the desulfurizing agent that desulfurization is used is sodium hydroxide solution, its concentration is 0.6 g/l, desulfurization temperature is 56 ℃, bleaching agent is vulcanized sodium, its concentration is 3.8 g/l, the finish oiling is white oil, its concentration is 3.0 g/l, upper oil temperature is 38 ℃, bake out temperature is 95 ℃.
Become cylinder or skeining
After strand after refining treatment enters drying machine drying under the effect of godet roller, become cylinder or skeining, then classification warehouse-in is sold.
The dry strong of the strand obtaining is 0.80CN/dtex, and degree of stretching is 11.7%.
Reclaim carbon disulfide and adopt high-temperature cooking process to reclaim, its concrete recovery process step is:
Step 1, high temperature become carbon disulfide into gaseous state;
Step 2, the carbon disulfide of gaseous state is piped to and in condensing unit, is condensed into liquid state;
Step 3, liquid carbon disulfide is transported to stand for standby use in storage tank by pipeline.
Embodiment 3
Making viscose
The fine content 9.0% of viscose glue first of preparation, viscosity is 46 seconds, degree of ripeness is with NH
4cL counts 9.1ml, and alkalinity is 4.8%, and temperature is 18 ℃, and minute bubbles are below 25.
A coagulation forming
Viscose glue is sent in candle shape filter by the effect of measuring pump and fork, after candle shape filter filters by the effect of gooseneck, be sent in spinning head, described spinning head is placed in coagulating tank for the first time, and viscose glue enters for the first time and carries out coagulation forming one time in coagulating tank after spinning head ejection.When a coagulation forming, reclaim carbon disulfide.
A coagulation forming coagulating bath comprises sulfuric acid, sodium sulphate and zinc sulfate, and wherein, the content of sulfuric acid is 118g/l, and the content of sodium sulphate is 295g/l, and zinc sulfate content is 9g/l, and the temperature of coagulating bath is 53 ℃.
Secondary coagulation forming
Strand after the first coagulation forming imports in secondary coagulation forming groove and carries out secondary coagulation forming through the effect of the thread guide mechanisms such as traveller, spinning disc and seal wire angle.The coagulating bath of secondary coagulation forming comprises sulfuric acid, and content is 18g/l, and temperature is 97 ℃.When secondary coagulation forming, reclaim carbon disulfide.
First washing
Strand traction by drawing machine from coagulating bath out for the second time enters into rinsing bowl and washes for the first time, and the water lotion of first washing is soft water, and more than in first washing water washing trough, the volume of soft water remains on 2.5m3, the water in rinsing bowl is mobile soft water.
Refining
Strand enters the arrangement of associating refiner shred collecting groove and paves from the rinsing bowl of previous cleaning is processed under the effect of godet roller, washing, desulfurization, bleaching, adjust Ph value, oil and dry, during arrangement, liquid is weakly acidic, the content of weak acid is 3g/l, temperature is 80 ℃, washing adopts the mode of drip washing to wash, the desulfurizing agent that desulfurization is used is sodium hydroxide solution, its concentration is 0.6 g/l, desulfurization temperature is 58 ℃, bleaching agent is vulcanized sodium, its concentration is 4.0 g/l, the finish oiling is white oil, its concentration is 3.0 g/l, upper oil temperature is 40 ℃, bake out temperature is 98 ℃.
Become cylinder or skeining
After strand after refining treatment enters drying machine drying under the effect of godet roller, become cylinder or skeining, then classification warehouse-in is sold.
The dry strong of the strand obtaining is 0.79CN/dtex, and degree of stretching is 12.0%.
Reclaim carbon disulfide and adopt high-temperature cooking process to reclaim, its concrete recovery process step is:
Step 1, high temperature become carbon disulfide into gaseous state;
Step 2, the carbon disulfide of gaseous state is piped to and in condensing unit, is condensed into liquid state;
Step 3, liquid carbon disulfide is transported to stand for standby use in storage tank by pipeline.
Embodiment 4
Making viscose
The fine content 9.0% of viscose glue first of preparation, viscosity is 47 seconds, degree of ripeness is with NH
4cL counts 9.2ml, and alkalinity is 4.9%, and temperature is 20 ℃, and minute bubbles are below 25.
A coagulation forming
Viscose glue is sent in candle shape filter by the effect of measuring pump and fork, after candle shape filter filters by the effect of gooseneck, be sent in spinning head, described spinning head is placed in coagulating tank for the first time, and viscose glue enters for the first time and carries out coagulation forming one time in coagulating tank after spinning head ejection.When a coagulation forming, reclaim carbon disulfide.
A coagulation forming coagulating bath comprises sulfuric acid, sodium sulphate and zinc sulfate, and wherein, the content of sulfuric acid is 120g/l, and the content of sodium sulphate is 310g/l, and zinc sulfate content is 8.5g/l, and the temperature of coagulating bath is 54 ℃.
Secondary coagulation forming
Strand after the first coagulation forming imports in secondary coagulation forming groove and carries out secondary coagulation forming through the effect of the thread guide mechanisms such as traveller, spinning disc and seal wire angle.The coagulating bath of secondary coagulation forming comprises sulfuric acid, and content is 16g/l, and temperature is 98 ℃.When secondary coagulation forming, reclaim carbon disulfide.
First washing
Strand traction by drawing machine from coagulating bath out for the second time enters into rinsing bowl and washes for the first time, and the water lotion of first washing is soft water, and more than in first washing water washing trough, the volume of soft water remains on 2.5m3, the water in rinsing bowl is mobile soft water.
Refining
Strand enters the arrangement of associating refiner shred collecting groove and paves from the rinsing bowl of previous cleaning is processed under the effect of godet roller, washing, desulfurization, bleaching, adjust Ph value, oil and dry, during arrangement, liquid is weakly acidic, the content of weak acid is 2g/l, temperature is 80 ℃, washing adopts the mode of drip washing to wash, the desulfurizing agent that desulfurization is used is sodium hydroxide solution, its concentration is 0.6 g/l, desulfurization temperature is 56 ℃, bleaching agent is vulcanized sodium, its concentration is 3.5 g/l, the finish oiling is white oil, its concentration is 3.5 g/l, upper oil temperature is 45 ℃, bake out temperature is 95 ℃.
Become cylinder or skeining
After strand after refining treatment enters drying machine drying under the effect of godet roller, become cylinder or skeining, then classification warehouse-in is sold.
The dry of the strand obtaining is by force 0. 81CN/dtex, and degree of stretching is 11.6%.
Reclaim carbon disulfide and adopt high-temperature cooking process to reclaim, its concrete recovery process step is:
Step 1, high temperature become carbon disulfide into gaseous state;
Step 2, the carbon disulfide of gaseous state is piped to and in condensing unit, is condensed into liquid state;
Step 3, liquid carbon disulfide is transported to stand for standby use in storage tank by pipeline.
Embodiment 5
Making viscose
The fine content 9.0% of viscose glue first of preparation, viscosity is 48 seconds, degree of ripeness is with NH
4cL counts 9ml, and alkalinity is 4.9%, and temperature is 20 ℃, and minute bubbles are below 25.
A coagulation forming
Viscose glue is sent in candle shape filter by the effect of measuring pump and fork, after candle shape filter filters by the effect of gooseneck, be sent in spinning head, described spinning head is placed in coagulating tank for the first time, and viscose glue enters for the first time and carries out coagulation forming one time in coagulating tank after spinning head ejection.When a coagulation forming, reclaim carbon disulfide.
A coagulation forming coagulating bath comprises sulfuric acid, sodium sulphate and zinc sulfate, and wherein, the content of sulfuric acid is 115g/l, and the content of sodium sulphate is 290g/l, and zinc sulfate content is 8g/l, and the temperature of coagulating bath is 51 ℃.
Secondary coagulation forming
Strand after the first coagulation forming imports in secondary coagulation forming groove and carries out secondary coagulation forming through the effect of the thread guide mechanisms such as traveller, spinning disc and seal wire angle.The coagulating bath of secondary coagulation forming comprises sulfuric acid, and content is 10g/l, and temperature is 96 ℃.When secondary coagulation forming, reclaim carbon disulfide.
First washing
Strand traction by drawing machine from coagulating bath out for the second time enters into rinsing bowl and washes for the first time, and the water lotion of first washing is soft water, and more than in first washing water washing trough, the volume of soft water remains on 2.5m3, the water in rinsing bowl is mobile soft water.
Refining
Strand enters the arrangement of associating refiner shred collecting groove and paves from the rinsing bowl of previous cleaning is processed under the effect of godet roller, washing, desulfurization, bleaching, adjust Ph value, oil and dry, during shred collecting groove finishing fiber, liquid is weakly acidic, the content of weak acid is 1g/l, temperature is 80 ℃, washing adopts the mode of drip washing to wash, the desulfurizing agent that desulfurization is used is sodium hydroxide solution, its concentration is 0.4 g/l, desulfurization temperature is 60 ℃, bleaching agent is vulcanized sodium, its concentration is 4.5 g/l, the finish oiling is white oil, its concentration is 3.5 g/l, upper oil temperature is 45 ℃, bake out temperature is 98 ℃.
Become cylinder or skeining
After strand after refining treatment enters drying machine drying under the effect of godet roller, become cylinder or skeining, then classification warehouse-in is sold.
The dry of the strand obtaining is by force 0. 75CN/dtex, and degree of stretching is 12.0%.
Reclaim carbon disulfide and adopt high-temperature cooking process to reclaim, its concrete recovery process step is:
Step 1, high temperature become carbon disulfide into gaseous state;
Step 2, the carbon disulfide of gaseous state is piped to and in condensing unit, is condensed into liquid state;
Step 3, liquid carbon disulfide is transported to stand for standby use in storage tank by pipeline.
Embodiment 6
Making viscose
The fine content 9.0% of viscose glue first of preparation, viscosity is 48 seconds, degree of ripeness is with NH
4cL counts 9.5ml, and alkalinity is 4.9%, and temperature is 20 ℃, and minute bubbles are below 25.
A coagulation forming
Viscose glue is sent in candle shape filter by the effect of measuring pump and fork, after candle shape filter filters by the effect of gooseneck, be sent in spinning head, described spinning head is placed in coagulating tank for the first time, and viscose glue enters for the first time and carries out coagulation forming one time in coagulating tank after spinning head ejection.When a coagulation forming, reclaim carbon disulfide.
A coagulation forming coagulating bath comprises sulfuric acid, sodium sulphate and zinc sulfate, and wherein, the content of sulfuric acid is 122g/l, and the content of sodium sulphate is 320g/l, and zinc sulfate content is 10g/l, and the temperature of coagulating bath is 54 ℃.
Secondary coagulation forming
Strand after the first coagulation forming imports in secondary coagulation forming groove and carries out secondary coagulation forming through the effect of the thread guide mechanisms such as traveller, spinning disc and seal wire angle.The coagulating bath of secondary coagulation forming comprises sulfuric acid, and content is 20g/l, and temperature is 98 ℃.When secondary coagulation forming, reclaim carbon disulfide.
First washing
Strand traction by drawing machine from coagulating bath out for the second time enters into rinsing bowl and washes for the first time, and the water lotion of first washing is soft water, and more than in first washing water washing trough, the volume of soft water remains on 2.5m3, the water in rinsing bowl is mobile soft water.
Refining
Strand enters the arrangement of associating refiner and paves from the rinsing bowl of previous cleaning is processed under the effect of godet roller, washing, desulfurization, bleaching, adjust Ph value, oil and dry, during shred collecting groove fibre finish, liquid is weakly acidic, the content of weak acid is 2g/l, temperature is 80 ℃, washing adopts the mode of drip washing to wash, the desulfurizing agent that desulfurization is used is sodium hydroxide solution, its concentration is 0.6 g/l, desulfurization temperature is 60 ℃, bleaching agent is vulcanized sodium, its concentration is 4.5 g/l, the finish oiling is white oil, its concentration is 3.5 g/l, upper oil temperature is 45 ℃, bake out temperature is 98 ℃.
Become cylinder or skeining
After strand after refining treatment enters drying machine drying under the effect of godet roller, become cylinder or skeining, then classification warehouse-in is sold.
The dry strong of the strand obtaining is 0.81CN/dtex, and degree of stretching is 11.7%.
Reclaim carbon disulfide and adopt high-temperature cooking process to reclaim, its concrete recovery process step is:
Step 1, high temperature become carbon disulfide into gaseous state;
Step 2, the carbon disulfide of gaseous state is piped to and in condensing unit, is condensed into liquid state;
Step 3, liquid carbon disulfide is transported to stand for standby use in storage tank by pipeline.
Claims (7)
1. for the production of the method for thick dawn viscose glue flat filament, it is characterized in that: viscose glue pumps in candle shape filter through measuring pump, filter, viscose glue after filtration enters and in spinning head, sprays silk through gooseneck, the strand of ejection enters and in it by one-step coagulating bath groove, carries out one time coagulation forming, then by thread guide mechanism, imported in secondary coagulation forming groove and carry out secondary coagulation forming, after secondary coagulation forming, enter in rinsing bowl and wash for the first time, after first washing, strand enters associating refiner and arranges and pave, washing, desulfurization, bleaching, adjust Ph value, oil and dry, finally become cylinder or skeining, strand reclaims carbon disulfide when coagulation forming and secondary coagulation forming.
2. the method for the production of thick dawn viscose glue flat filament according to claim 1, it is characterized in that: a described coagulation forming coagulating bath comprises sulfuric acid, sodium sulphate and zinc sulfate, wherein, the content of sulfuric acid is 115～122g/l, the content of sodium sulphate is 290～320g/l, zinc sulfate content is 8～10g/l, and the temperature of coagulating bath is 51～54 ℃.
3. the method for the production of thick dawn viscose glue flat filament according to claim 1 and 2, is characterized in that: the coagulating bath of described secondary coagulation forming comprises sulfuric acid, and content is 10～20g/l, and temperature is 95～98 ℃.
4. the method for the production of thick dawn viscose glue flat filament according to claim 1, is characterized in that: the water lotion of described first washing is soft water, and more than in first washing water washing trough, the volume of soft water remains on 2.5m3, the water in rinsing bowl is mobile soft water.
5. the method for the production of thick dawn viscose glue flat filament according to claim 3, it is characterized in that: strand arranges while paving, liquid used is weakly acidic, the content of weak acid is 1～3g/l, temperature is 60～80 ℃, washing adopts the mode of drip washing to wash, the desulfurizing agent that desulfurization is used is sodium hydroxide solution, its concentration is 0.4～0.6 g/l, desulfurization temperature is 54～60 ℃, bleaching agent is vulcanized sodium, its concentration is 3.5～4.5 g/l, the finish oiling is white oil, its concentration is 2.5～3.5 g/l, upper oil temperature is 35～45 ℃, bake out temperature is 95～98 ℃.
6. the method for the production of thick dawn viscose glue flat filament according to claim 1, is characterized in that: reclaim carbon disulfide and adopt high-temperature cooking process to reclaim, its concrete recovery process step is:
Step 1, high temperature become carbon disulfide into gaseous state;
Step 2, the carbon disulfide of gaseous state is piped to and in condensing unit, is condensed into liquid state;
Step 3, liquid carbon disulfide is transported to stand for standby use in storage tank by pipeline.
7. the method for the production of thick dawn viscose glue flat filament according to claim 1, is characterized in that: the fine content 8.9～9.0% of described viscose glue first, and viscosity is 42～48 seconds, degree of ripeness is with NH
4cL counts 9～9.5ml, and alkalinity is 4.7～4.9%, and temperature is 17～20 ℃, and minute bubbles are below 25.
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| CN110129898A (en) * | 2019-06-10 | 2019-08-16 | 宜宾海丝特纤维有限责任公司 | The super thick denier viscose filament yarn maturation technique of one kind |
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