CN1858343A - Method for preparing Broussonetia paperrifervent pulp for producing viscose fiber - Google Patents
Method for preparing Broussonetia paperrifervent pulp for producing viscose fiber Download PDFInfo
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- CN1858343A CN1858343A CN 200610044256 CN200610044256A CN1858343A CN 1858343 A CN1858343 A CN 1858343A CN 200610044256 CN200610044256 CN 200610044256 CN 200610044256 A CN200610044256 A CN 200610044256A CN 1858343 A CN1858343 A CN 1858343A
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- minutes
- paperrifervent
- broussonetia
- bleaching
- pulp
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- 241000933832 Broussonetia Species 0.000 title claims abstract description 41
- 229920000297 Rayon Polymers 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 4
- 239000000835 fiber Substances 0.000 title abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 claims description 27
- 238000009835 boiling Methods 0.000 claims description 23
- 238000004061 bleaching Methods 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 16
- 238000010009 beating Methods 0.000 claims description 13
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 9
- 239000000460 chlorine Substances 0.000 claims description 9
- 229910052801 chlorine Inorganic materials 0.000 claims description 9
- 230000014759 maintenance of location Effects 0.000 claims description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 3
- 238000009898 sodium hypochlorite bleaching Methods 0.000 claims description 2
- 238000004537 pulping Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 3
- 239000004576 sand Substances 0.000 abstract description 2
- -1 rinsing Substances 0.000 abstract 1
- 238000010025 steaming Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 229920000742 Cotton Polymers 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 241001343274 Dichrostachys spicata Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Paper (AREA)
Abstract
The present invention discloses the preparation process of Broussonetia paperrifervent pulp for producing viscose fiber. The preparation process includes the steps of preparing material, steaming, washing, pulping, eliminating sand, rinsing, water washing and pulp fishing. The present invention has less material consumption and excellent performance of Broussonetia paperrifervent pulp.
Description
Technical field
The present invention relates to the production of chemical fibre technology in a kind of field of textiles, especially relating to a kind of light leaf paper mulberry bast that adopts is the Broussonetia paperrifervent pulp preparation method that raw material production is used to produce viscose.
Background technology
In textile industry, chemical fibre has become use textile raw material very widely at present, and the development of chemical fibre and use grow with each passing day.According to statistics, chemical fibre output and use amount have accounted for about 50% of textile fabric total amount in the world, and still have the impetus that increases day by day, and wherein viscose has accounted for sizable ratio again in chemical fibre.Because content of cellulose is easy to make the highly purified cotton pulp dregs of rice than higher in the cotton linter of cotton, it is the raw material production cellulose viscose pulp that therefore current most of producer adopts cotton linter.But because cotton shortage at present is very serious, therefore adopting cotton linter is that the production cost of raw material production cellulose viscose pulp is also higher, and this has restricted the development that viscose is produced to a certain extent.Adopting needlebush and broadleaf is that the pulp that raw material production is used to produce viscose also is people's production methods relatively more commonly used at present, but because the production cycle that these wood are planted is longer, and the length of these seeds institute fibre-bearings is shorter, the pulping rate is lower, adopt the color and luster of its viscose of making darker, intensity is not high, and quality is also lower, and this has also influenced the production of viscose to a certain extent.Therefore people are badly in need of finding a kind of material that is rich in high-quality bast fiber to solve the raw material problem that people produce viscose.
Light leaf paper mulberry has another name called speed and gives birth to paper mulberry, is a kind of deciduous tree, contain abundant bast fiber in the bast of these seeds, its light leaf paper mulberry bast fiber length is long, on average can reach 7.48 millimeters, the fiber that belongs to the trees kind than China together is high by 23.2%, and length-width ratio can reach 332, and color and luster is white, intensity is big, the output height, and the pulping rate that is used for producing pulp is also high, can reach more than 80%, the bast fiber that adopts light leaf paper mulberry is the viscose that raw material is made, the intensity height, whiteness is good, and the class of product is also high.This seeds growth adaptability is strong, drought-resistant, acid and alkali-resistance, and it is good to grow up on barren soil such as hills, river shoal, the results then of planting then, growth cycle is short, plants in 1 year, and results have higher value for many years.Therefore, light leaf paper mulberry is produced a kind of main raw material of viscose with pulp to become current people, do not realize and in actual production, still there is ripe effectively production technology at present, therefore, seeking a kind of effective process adopts light leaf paper mulberry manufacturing production viscose to become the present urgent problem of people with pulp.
Summary of the invention
The technical problem to be solved in the present invention has provided a kind of Broussonetia paperrifervent pulp preparation method who is used to produce viscose, solves the problem that adopts the manufacturing of light leaf paper mulberry to produce cellulose viscose pulp.
For solving the problems of the technologies described above, technical scheme of the present invention is: the Broussonetia paperrifervent pulp preparation method who is used to produce viscose, production stage comprises to be got the raw materials ready, boiling, washes material, making beating, desanding, bleaching, washes, copies slurry, described boiling is for adopting in 10～30% of the relative over dry material of NaOH amount, liquor ratio is 1: 3～5,60～120 minutes heating-up times, the boiling maximum temperature is 130～180 ℃, temperature retention time 180～360 minutes; Sodium hypochlorite bleaching is adopted in bleaching, and with respect to 1～5% of over dry material amount, slurry concentration is 2～6% with effective chlorine dosage, carry out for 9～11 times at 40～60 ℃ of temperature, pH value, and bleaching time 40～90 minutes.
As a kind of improvement, described making beating is 5～10% at slurry concentration, and beating time is 30～90 minutes, adopts shiny beating, and no little slurry group in the slurry that requires to obtain.
As further improvement, adopting in NaOH in the described boiling is 15～20% with respect to over dry material amount, and liquor ratio 1: 3～4,60～90 minutes heating-up times, 150～173 ℃ of boiling maximum temperatures, temperature retention time 180～300 minutes.
As further improvement, the relative over dry material of effective chlorine dosage amount is 3～5% during described employing clorox, 40～50 ℃ of bleaching temperatures, bleaching time 50～60 minutes.
In the present invention, can adopt mechanical mode to obtain light leaf paper mulberry bast when getting the raw materials ready from light leaf paper mulberry, as adopt mechanical systems such as skinning machine that the epidermis of light leaf paper mulberry is removed, obtain light leaf paper mulberry bast, then light leaf paper mulberry bast is screened, produce the light leaf paper mulberry bast that needs with the selector symphysis, cut off afterwards, cleaning, removal of impurities etc. give preparation, carry out boiling by technology again, after boiling, bleed off raffinate, and the tough cladding of light leaf paper mulberry after the boiling is washed; Reach meet production requirement after, the operations such as desanding of pulling an oar in beater and desander respectively, purpose are the light leaf paper mulberry bast after the boiling to be made pulp and remove impurity in the slurry and tiny fiber; The slurry that obtains is bleached processing, wash afterwards, be washed to slurry and meet production standard; In pulp machine, the slurry after the washing is copied slurry, can make after the oven dry and produce the used Broussonetia paperrifervent pulp of viscose.The equipment that is adopted in whole processing step is current people applied equipment in actual production like an elephant potcher and sand removing machine, the pulp machine etc. in the boiling vessel in the boiling-off, the bleaching, there is no special feature; And the various raw materials of using in the production technology also are that people use always in daily production.Certainly, in the explained hereafter of reality, the condition of production according to reality, can be in it be produced to advance row filter and concentrate and be beneficial to bleaching of slurry bleaching, some that the acidifying of slurry and some are intended to help producing after bleaching all are some common known technologies for the person of ordinary skill of the art.
Among the present invention, obtain to produce the used Broussonetia paperrifervent pulp of viscose owing to adopted better simply production technology and operation to handle light leaf paper mulberry bast, make and to finish the production of viscose with less supplies consumption in the present invention with Broussonetia paperrifervent pulp, not only technology is simple, be convenient in the production operation of reality, use, and the light leaf paper mulberry fibre property in the Broussonetia paperrifervent pulp of producing is good, its every technical indicator can reach: alpha cellulose 〉=90%, permanganate number 3～8, whiteness 〉=78%, ash≤0.20%, iron part≤25ppm, viscosity can reach the excellent properties of 15 ± 5mpa.s.
The specific embodiment
Embodiment 1
To put into boiling vessel through the raw material light leaf paper mulberry bast that meets the production needs that procedures for preparation such as screening, cut-out, cleaning, removal of impurities were handled, employing is 20% in the relative over dry material of NaOH amount, liquor ratio is dosing in 1: 3, be warmed up to 150 ℃ in 60 minutes, and the insulation be 240 minutes, bleed off raffinate after boiling finishes, and the light leaf paper mulberry bast after the boiling washed, make its cooking quality be controlled at permanganate number 3～8, dynamic viscosity 15 ± 5mpa.s, first fibre 〉=90%; In beater the light leaf paper mulberry bast after the boiling is pulled an oar afterwards, adopt shiny beating, and require beating consistency 7%, pulled an oar 70 minutes, making does not have little slurry group to exist in the slurry; Again the slurry that obtains is carried out desanding in desander, to remove impurity in the slurry and tiny fiber; Adopt clorox to bleach in slurry, wherein effectively chlorine dosage is 4% with respect to over dry material amount, and slurry concentration can under the condition of 48 ℃ of temperature, pH value 9, be bleached 60 minutes 5%; Bleed off raffinate then and it is washed,, just can in pulp machine, copy slurry afterwards, dry and dry and get final product copying material that slurry obtains to slurry until meeting production standard.
Adopt the Broussonetia paperrifervent pulp performance indications that the foregoing description obtained to be: alpha cellulose: 96%, whiteness 80%, ash 0.17%, iron part 17ppm, dynamic viscosity 10.4mpa.s.
Embodiment 2
The processing step that present embodiment adopted is consistent with embodiment 1 with raw material, just in technology carry out boiling the time NaOH relative over dry material amount be 15%, liquor ratio is dosing in 1: 3, is warmed up to 170 ℃ in 90 minutes, and is incubated 300 minutes; Pull an oar concentration then 5%, pull an oar and carry out under 90 minutes; The time then adopt effective chlorine dosage in bleaching, 46 ℃ of temperature, slurry concentration can be 2%, under the condition of pH value 10, bleached 90 minutes with respect to over dry material amount 3%.
Adopt the Broussonetia paperrifervent pulp performance indications that the foregoing description obtained to be: alpha cellulose: 96.5%, whiteness 81%, ash 0.20%, iron part 24ppm, dynamic viscosity 10.0mpa.s.
Embodiment 3
The processing step that present embodiment adopted is consistent with embodiment 1 with raw material, just in technology carry out boiling the time NaOH relative over dry material amount be 10%, liquor ratio is dosing in 1: 3, is warmed up to 173 ℃ in 60 minutes, and is incubated 180 minutes; Beating consistency was pulled an oar 30 minutes 10%; And adopt effective chlorine dosage in when bleaching with respect to over dry material amount 4%, 50 ℃ of temperature, slurry concentration can be 5%, under the condition of pH value 11, bleached 50 minutes.
Adopt the Broussonetia paperrifervent pulp performance indications that the foregoing description obtained to be: alpha cellulose 96%, whiteness 78%, ash 0.19%, iron part 24ppm, dynamic viscosity 15mpa.s.
Embodiment 4
The processing step that present embodiment adopted is consistent with embodiment 1 with raw material, just in technology carry out boiling the time NaOH relative over dry material amount be 19%, liquor ratio is dosing in 1: 4, is warmed up to 180 ℃ in 60 minutes, and is incubated 300 minutes; Beating consistency was pulled an oar 90 minutes 5%, and adopted effective chlorine dosage with respect to over dry material amount 5% in when bleaching, 40 ℃ of temperature, slurry concentration can be 6%, under the condition of pH value 11, bleached 40 minutes.
Adopt the Broussonetia paperrifervent pulp performance indications that the foregoing description obtained to be: alpha cellulose 95%, whiteness 80%, ash 0.19%, iron part 18ppm, dynamic viscosity 10.0mpa.s.
Embodiment 5
The processing step that present embodiment adopted is consistent with embodiment 1, just in technology carry out boiling the time NaOH relative over dry material amount be 30%, liquor ratio is dosing in 1: 5, is warmed up to 130 ℃ in 120 minutes, and is incubated 360 minutes; Beating consistency was pulled an oar 70 minutes 6%; And adopt effective chlorine dosage with respect to over dry material amount 1% in when bleaching, 60 ℃ of temperature, slurry concentration can be 6%, under the condition of pH value 11, bleached 90 minutes.
Adopt the Broussonetia paperrifervent pulp performance indications that the foregoing description obtained to be: alpha cellulose 90%, whiteness 79%, ash 0.19%, iron part 20ppm, dynamic viscosity 5mpa.s.
Claims (4)
1, is used to produce the Broussonetia paperrifervent pulp preparation method of viscose, comprise that the production treatment process is got the raw materials ready, boiling, wash material, making beating, desanding, bleaching, wash, copy slurry, it is characterized in that: described boiling is for adopting in 10～30% of the relative over dry material of NaOH amount, liquor ratio is 1: 3～5,60～120 minutes heating-up times, the boiling maximum temperature is 130～180 ℃, temperature retention time 180～360 minutes; Sodium hypochlorite bleaching is adopted in bleaching, and with respect to 1～5% of over dry material amount, slurry concentration is 2～6% with effective chlorine dosage, carry out for 9～11 times at 40～60 ℃ of temperature, pH value, and bleaching time 40～90 minutes.
2, the Broussonetia paperrifervent pulp preparation method who is used to produce viscose according to claim 1, it is characterized in that: described making beating is 5～10% at slurry concentration, beating time is 30～90 minutes, adopts shiny beating, and no little slurry group in the slurry that requires to obtain.
3, the Broussonetia paperrifervent pulp preparation method who is used to produce viscose according to claim 1, it is characterized in that: adopting in NaOH in the described boiling is 15～20% with respect to over dry material amount, and liquor ratio 1: 3～4,60～90 minutes heating-up times, 150～173 ℃ of boiling maximum temperatures, temperature retention time 180～300 minutes.
4, the Broussonetia paperrifervent pulp preparation method who is used to produce viscose according to claim 1 is characterized in that: the relative over dry material of effective chlorine dosage amount is 3～5% during described employing clorox, 40～50 ℃ of bleaching temperatures, bleaching time 50～60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610044256 CN1858343A (en) | 2006-05-17 | 2006-05-17 | Method for preparing Broussonetia paperrifervent pulp for producing viscose fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610044256 CN1858343A (en) | 2006-05-17 | 2006-05-17 | Method for preparing Broussonetia paperrifervent pulp for producing viscose fiber |
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| CN1858343A true CN1858343A (en) | 2006-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610044256 Pending CN1858343A (en) | 2006-05-17 | 2006-05-17 | Method for preparing Broussonetia paperrifervent pulp for producing viscose fiber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444044A (en) * | 2010-10-14 | 2012-05-09 | 山东理工大学 | Retinervus luffae fructus pulp for manufacturing viscose fiber and preparation method thereof |
| CN107964822A (en) * | 2017-11-14 | 2018-04-27 | 潍坊友容实业有限公司 | The method of the white willow papermaking of salt-soda soil plant |
| CN109281230A (en) * | 2018-09-26 | 2019-01-29 | 浙江金昌特种纸股份有限公司 | A kind of preparation method of tapa dragon flying around silk and its mechanism dragon flying around paper |
-
2006
- 2006-05-17 CN CN 200610044256 patent/CN1858343A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444044A (en) * | 2010-10-14 | 2012-05-09 | 山东理工大学 | Retinervus luffae fructus pulp for manufacturing viscose fiber and preparation method thereof |
| CN107964822A (en) * | 2017-11-14 | 2018-04-27 | 潍坊友容实业有限公司 | The method of the white willow papermaking of salt-soda soil plant |
| CN109281230A (en) * | 2018-09-26 | 2019-01-29 | 浙江金昌特种纸股份有限公司 | A kind of preparation method of tapa dragon flying around silk and its mechanism dragon flying around paper |
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