CN101215720A - Preparation method of Chinese alpine rush pulp for producing viscose fiber - Google Patents
Preparation method of Chinese alpine rush pulp for producing viscose fiber Download PDFInfo
- Publication number
- CN101215720A CN101215720A CNA2008100136364A CN200810013636A CN101215720A CN 101215720 A CN101215720 A CN 101215720A CN A2008100136364 A CNA2008100136364 A CN A2008100136364A CN 200810013636 A CN200810013636 A CN 200810013636A CN 101215720 A CN101215720 A CN 101215720A
- Authority
- CN
- China
- Prior art keywords
- alpine rush
- chinese alpine
- boiling
- pulp
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Paper (AREA)
Abstract
The invention discloses a process for preparing Chinese alpine rush pulp which is used for manufacturing cellulose viscose, which comprises following steps: preconditioning by hydrolysis, fully immersing raw material, namely Chinese alpine rush in water, boiling, boiling Chinese alpine rush which is processed in the step a in alkaline liquid of a boiler, then filter-pressing to obtain filter cake, bleaching, immersing the filter cake in bleaching agent liquid, obtaining bleaching pulp, carrying out acidic process, immersing bleaching pulp in acidic liquid, and obtaining finished product of pulp through washing and drying. Chinese alpine rush is used as perfect raw material to prepare cellulose viscose, the invention provides wider prospect for developing and utilizing Chinese alpine rush, the method which is provided is easy to operate, and cellulose viscose which is made by raw material has softness, good brightness and high strength.
Description
Technical field
The present invention relates to the Chinese alpine rush is the preparation method of Chinese alpine rush pulp that raw material is used to produce viscose.
Background technology
Chemical fibre is as the main raw material of textile industry at present, and its development and use grow with each passing day, and in chemical fibre, viscose has accounted for quite great proportion again.China makes the selected pulp raw material of viscose and is mainly derived from cotton linter and timber, because grain and cotton is striven ground, cotton linter resource is subjected to the restriction of output of cotton, and is serious deficient, restricted the development that viscose is produced to a certain extent; On the other hand, China's afforestation rate is lower and the tree growth cycle is long, prepares viscose if fell a large amount of timber, certainly will will influence the environmental aspect of the Nature, destroys the ecological balance.Therefore, seeking the raw material that a kind of new being used to make viscose is that people are always in the problem of constantly exploring and needing to be resolved hurrily.
Summary of the invention
It is raw material that task of the present invention is to provide a kind of employing herbaceous plant Chinese alpine rush, is used to produce the preparation method of Chinese alpine rush pulp of viscose.
Its technical solution is:
A kind of preparation method of Chinese alpine rush pulp that is used to produce viscose has following steps:
A hydrolysis preliminary treatment is fully soaked Chinese alpine rush raw material water;
B boiling, the Chinese alpine rush after will handling through step a be put in boiling in the alkali lye of boiling vessel, and press filtration obtains filter cake then;
The c bleaching is soaked filter cake with bleaching agent solution, obtains bleached pulp;
The d acid treatment is soaked bleached pulp with acid solution, after obtain the finished product pulp after washing and the drying.
Among the above-mentioned steps a, between Chinese alpine rush raw material and the immersion water body, in the over dry Chinese alpine rush, its weight proportion is 1: 50-60, and water temperature is 80 ℃-100 ℃, the time is 1.5h-3h, and continuous the stirring makes its hydrolysis even in hydrolytic process; Among the above-mentioned steps b, the alkali that adds relative over dry Chinese alpine rush raw material 20%-40% weight in the boiling water body forms alkali lye, and between Chinese alpine rush raw material and the boiling water body, in the over dry Chinese alpine rush, its weight proportion is 1: 3.0-4.5, used alkali are NaOH, Na
2S and Na
2SO
4Three's assembly thing, the initial temperature of boiling are 90 ℃, programming rate 5-15K/min, and final boiling temperature is 160 ℃-180 ℃, behind the boiling 2h, press filtration obtains filter cake and reclaims cooking liquor; Among the above-mentioned steps c, at first filter cake is washed, use the NaClO of relative over dry Chinese alpine rush raw material weight 1%-2% then, in the alkaline solution of pH=9-12, soak filter cake, slurry concentration is 20%-30%, temperature is 40 ℃-60 ℃, and bleaching time is 1h-3h, and this bleaching process can carry out once or repeat repeatedly; Among the above-mentioned steps d, the residual acid amount in washing back is less than 0.20g/L.
Above-mentioned NaOH, Na
2S and Na
2SO
4, the weight ratio between the three is 1-2: 1-2: 1-2.
The beneficial effect of the invention is:
Chinese alpine rush is perennial perennial root herbaceous plant, belongs to grass family.China's Chinese alpine rush aboundresources, be distributed widely in China Central China, south China, East China, southwest and the Northwest, its adaptability is strong, can grow in various types of soil, especially well-grown in bad soil such as sandy soil, saline-alkali soil, gravel, abandoned mine, and anti-lean, drought-enduring.Chinese alpine rush is easy to plantation, requires less investment while yielding quicker results, and the life-span is long, and does not strive ground with cotton, cereal, gives full play to the effect in every cun soil of country.At present, just be accustomed to both at home and abroad and be confined to, and the developmental research of Chinese alpine rush as a kind of raw materials of chemical fibres do not appeared in the newspapers always aspect plantation, pulping and paper-making and the straw weavings processing for the research and development of Chinese alpine rush.Applicant's research staff breaks the normal procedure, through a large amount of arduous verification experimental verification alpine rush cellulose content up to 45.10%, can be as the fabulous raw material of preparation viscose, for the development and use of Chinese alpine rush provide more wide prospect.And a kind of preparation method of Chinese alpine rush pulp that is used to produce viscose is provided, and its simple easy operating, and viscose softness, the whiteness made with this kind raw material are good and intensity is high.
The specific embodiment
A kind of preparation method of Chinese alpine rush pulp that is used to produce viscose, the major technique content comprises:
In the hydrolysis preprocessing process, the Chinese alpine rush raw material preferably shows as the material form of suitable hydrolysis such as segment, fragmentation or pulverizing and subsequent treatment, as before hydrolysis, before this Chinese alpine rush is cut (hand hay cutter) and becomes segment, and staple fiber ppd is controlled between the 20-30mm.Water is to the Chinese alpine rush segment preliminary treatment that is hydrolyzed afterwards, Chinese alpine rush raw material and soaking between the water body, in the over dry Chinese alpine rush, its weight proportion is 1: 50-60, water temperature is 80 ℃-100 ℃, and the time is 1.5h-3h, and continuous the stirring makes its hydrolysis even in hydrolytic process.At hydrolysis stage, part hemicellulose in the Chinese alpine rush raw material and lignin are subjected to destruction to a certain degree under hot conditions, thereby have created advantage for the infiltration of cooking liquor.
Chinese alpine rush after the said hydrolyzed is put in boiling in the boiling vessel, the alkali that adds relative over dry Chinese alpine rush raw material 20%-40% weight in the boiling water body forms alkali lye, between Chinese alpine rush raw material and the boiling water body, in the over dry Chinese alpine rush, its weight proportion is 1: 3.0-4.5, used alkali are NaOH, Na
2S and Na
2SO
4Three's assembly thing, the initial temperature of boiling are 90 ℃, programming rate 5-15K/min, and final boiling temperature is 160 ℃-180 ℃, behind the boiling 2h, press filtration obtains filter cake and reclaims cooking liquor.
Enter bleachery after boiling disposed slurry (above-mentioned filter cake) washed, its process conditions are as follows:
NaClO with relative over dry Chinese alpine rush raw material weight 1%-2% soaks filter cake in the alkaline solution of pH=9-12, slurry concentration is 20%-30%, and temperature is 40 ℃-60 ℃, and bleaching time is 1h-3h, obtains bleached pulp.Also can further repeat said process bleached pulp is carried out the second time or bleaching for the third time.
For making the high-quality pulp, the acid treatment step that is absolutely necessary, acid-treated condition can be made appropriate change as the case may be, for example adopts kind, time and the temperature etc. of acid, but washes residual acid amount less than 0.20g/L.Pulp after the acid treatment obtains the finished product pulp after washing and drying.
Enumerating several examples below more more specifically illustrates:
Embodiment 1
1., get the raw materials ready: Chinese alpine rush is cut into segment as above-mentioned Chinese alpine rush raw material, and staple fiber ppd is controlled at 20mm, 25mm or 30mm.
2., hydrolysis preliminary treatment: water soaks the Chinese alpine rush raw material, and the feed liquid weight proportion is 1: 50, and water temperature is 80 ℃, and the time is 3h.
3., boiling: the Chinese alpine rush after the prehydrolysis is put in boiling in the boiling vessel, and the feed liquid weight proportion is 1: 3.0, adds the alkali of relative over dry Chinese alpine rush raw material 20% weight, and used alkali is NaOH, Na
2S and Na
2SO
4Three's assembly thing, the weight ratio between the three are 2: 1: 1, and the initial temperature of boiling is 90 ℃, programming rate 5K/min, and final boiling temperature is 160 ℃, behind the boiling 2h, press filtration gets filter cake and reclaims cooking liquor.
4., bleach: enter bleachery after boiling disposed slurry (above-mentioned filter cake) is washed, its process conditions are as follows:
NaClO with relative over dry Chinese alpine rush raw material weight 1% soaks filter cake in the alkaline solution of pH=9, slurry concentration is 20%, and temperature is 40 ℃, and bleaching time is 3h, obtains bleached pulp.
5., acid treatment: can take usual manner to carry out acid treatment above-mentioned bleached pulp, the pulp after the acid treatment obtains the finished product pulp after washing and drying, washes residual acid amount and is 0.20g/L.
Adopt the performance of the Chinese alpine rush pulp that the foregoing description obtained to be: alpha cellulose 92%, whiteness 78%, ash content 0.23%, iron divides 16ppm.
Embodiment 2
1., get the raw materials ready: Chinese alpine rush is carried out fragmentation as the Chinese alpine rush raw material.
2., hydrolysis preliminary treatment: water soaks above-mentioned Chinese alpine rush raw material, and the feed liquid weight proportion is 1: 55, and water temperature is 90 ℃, and the time is 2h.
3., boiling: the Chinese alpine rush after the prehydrolysis is put in boiling in the boiling vessel, and the feed liquid weight proportion is 1: 4.0, adds the alkali of relative over dry Chinese alpine rush raw material 30% weight, and used alkali is NaOH, Na
2S and Na
2SO
4Three's assembly thing, the weight ratio between the three are 1: 2: 1, and the initial temperature of boiling is 90 ℃, programming rate 10K/min, and final boiling temperature is 170 ℃, behind the boiling 2h, press filtration gets filter cake and reclaims cooking liquor.
4., bleach: enter bleachery after above-mentioned filter cake is washed, its process conditions are as follows:
NaClO with relative over dry Chinese alpine rush raw material weight 1.5% soaks filter cake in the alkaline solution of pH=10, slurry concentration is 25%, and temperature is 50 ℃, and bleaching time is 2h, obtains bleached pulp.Also can adopt same process that aforementioned bleached pulp is carried out the bleaching second time.
5., acid treatment: can take usual manner to carry out acid treatment above-mentioned bleached pulp, the pulp after the acid treatment obtains the finished product pulp after washing and drying, washes residual acid amount and is 0.10g/L.
Adopt the performance of the Chinese alpine rush pulp that the foregoing description obtained to be: alpha cellulose 96%, whiteness 80%, ash content 0.21%, iron divides 14ppm.
Embodiment 3
1., get the raw materials ready: Chinese alpine rush is pulverized form the Chinese alpine rush raw material.
2., hydrolysis preliminary treatment: water soaks above-mentioned Chinese alpine rush raw material, and the feed liquid weight proportion is 1: 60, and water temperature is 100 ℃, and the time is 1.5h.
3., boiling: the Chinese alpine rush after the prehydrolysis is put in boiling in the boiling vessel, and the feed liquid weight proportion is 1: 4.5, adds the alkali of relative over dry Chinese alpine rush raw material 40% weight, and used alkali is NaOH, Na
2S and Na
2SO
4Three's assembly thing, the weight ratio between the three are 1: 1: 2, and the initial temperature of boiling is 90 ℃, programming rate 15K/min, and final boiling temperature is 180 ℃, behind the boiling 2h, press filtration gets filter cake and reclaims cooking liquor.
4., bleach: enter bleachery after above-mentioned filter cake is washed, its process conditions are as follows:
NaClO with relative over dry Chinese alpine rush raw material weight 2% soaks filter cake in the alkaline solution of pH=12, slurry concentration is 30%, and temperature is 60 ℃, and bleaching time is 1h, obtains bleached pulp.Also can adopt same process that aforementioned bleached pulp is carried out the second time and bleaching for the third time.
5., acid treatment: can take usual manner to carry out acid treatment above-mentioned bleached pulp, the pulp after the acid treatment obtains the finished product pulp after washing and drying, washes residual acid amount and is 0.05g/L.
Adopt the performance of the Chinese alpine rush pulp that the foregoing description obtained to be: alpha cellulose 94%, whiteness 77%, ash content 0.24%, iron divides 15ppm.
Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present invention, any conspicuous variation, remodeling, interpolation or the replacement made all should belong to protection scope of the present invention.
Claims (3)
1. preparation method of Chinese alpine rush pulp that is used to produce viscose has following steps:
A hydrolysis preliminary treatment is fully soaked Chinese alpine rush raw material water;
B boiling, the Chinese alpine rush after will handling through step a be put in boiling in the alkali lye of boiling vessel, and press filtration obtains filter cake then;
The c bleaching is soaked filter cake with bleaching agent solution, obtains bleached pulp;
The d acid treatment is soaked bleached pulp with acid solution, after obtain the finished product pulp after washing and the drying.
2. a kind of preparation method of Chinese alpine rush pulp that is used to produce viscose according to claim 1, it is characterized in that: among the described step a, between Chinese alpine rush raw material and the immersion water body, in the over dry Chinese alpine rush, its weight proportion is 1: 50-60, water temperature is 80 ℃-100 ℃, and the time is 1.5h-3h, and continuous the stirring makes its hydrolysis even in hydrolytic process; Among the above-mentioned steps b, the alkali that adds relative over dry Chinese alpine rush raw material 20%-40% weight in the boiling water body forms alkali lye, and between Chinese alpine rush raw material and the boiling water body, in the over dry Chinese alpine rush, its weight proportion is 1: 3.0-4.5, used alkali are NaOH, Na
2S and Na
2SO
4Three's assembly thing, the initial temperature of boiling are 90 ℃, programming rate 5-15K/min, and final boiling temperature is 160 ℃-180 ℃, behind the boiling 2h, press filtration obtains filter cake and reclaims cooking liquor; Among the above-mentioned steps c, at first filter cake is washed, use the NaClO of relative over dry Chinese alpine rush raw material weight 1%-2% then, in the alkaline solution of pH=9-12, soak filter cake, slurry concentration is 20%-30%, temperature is 40 ℃-60 ℃, and bleaching time is 1h-3h, and this bleaching process can carry out once or repeat repeatedly; Among the above-mentioned steps d, the residual acid amount in washing back is less than 0.20g/L.
3. a kind of preparation method of Chinese alpine rush pulp that is used to produce viscose according to claim 2 is characterized in that: described NaOH, Na
2S and Na
2SO
4, the weight ratio between the three is 1-2: 1-2: 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100136364A CN101215720A (en) | 2008-01-14 | 2008-01-14 | Preparation method of Chinese alpine rush pulp for producing viscose fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100136364A CN101215720A (en) | 2008-01-14 | 2008-01-14 | Preparation method of Chinese alpine rush pulp for producing viscose fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101215720A true CN101215720A (en) | 2008-07-09 |
Family
ID=39622226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100136364A Pending CN101215720A (en) | 2008-01-14 | 2008-01-14 | Preparation method of Chinese alpine rush pulp for producing viscose fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101215720A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182086A (en) * | 2011-03-25 | 2011-09-14 | 四川永丰纸业股份有限公司 | Method for preparing bamboo pulp by full-liquid-phase prehydrolysis sulfate displacement cooking process |
| CN105231502A (en) * | 2015-11-09 | 2016-01-13 | 长兴业美纺织有限公司 | Novel anti-microbial fabric for underwear |
-
2008
- 2008-01-14 CN CNA2008100136364A patent/CN101215720A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182086A (en) * | 2011-03-25 | 2011-09-14 | 四川永丰纸业股份有限公司 | Method for preparing bamboo pulp by full-liquid-phase prehydrolysis sulfate displacement cooking process |
| CN102182086B (en) * | 2011-03-25 | 2013-04-24 | 四川永丰纸业股份有限公司 | Method for preparing bamboo pulp by full-liquid-phase prehydrolysis sulfate displacement cooking process |
| CN105231502A (en) * | 2015-11-09 | 2016-01-13 | 长兴业美纺织有限公司 | Novel anti-microbial fabric for underwear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102268833B (en) | Method for preparing dissolving pulp by carrying out steam explosion on crop straw and adopting prehydrolysis for sulfate | |
| CN102182090B (en) | Composite pulp of paper pulp and cotton linter and preparation method thereof | |
| CN103061181B (en) | Complex enzyme preparation and technique for preparing dissolving pulp by using same | |
| CN1088129C (en) | Technological process of producing viscose fiber size with bamboo and timber material | |
| CN101352324A (en) | Sanitary paper prepared by cereal straw pulp and preparation method thereof | |
| CN1974921B (en) | Method for producing bamboo pomace | |
| CN108611912A (en) | A kind of technique that Yellow humic acid fertilizer and high-strength corrugated paper are produced as raw material using cotton stalk | |
| CN101487195B (en) | Method for producing paper pulp used in rice paper production by broussonetia papyrifera bark through steam-exploding degumming | |
| CN101514529A (en) | Method for preparing bamboo dissolving pulp by improved prehydrolysis alkaline process and product thereof | |
| CN100395403C (en) | Oxygen delignify treating method for grass group unbleached chemical pulp | |
| CN106988139B (en) | A kind of processing method of paper grade (stock) tapa | |
| CN105256626A (en) | Mulberry bark chemi-mechanical pulp as well as preparation method and application thereof | |
| CN101701431A (en) | Method for producing bleached pulp for viscose fibers from bamboo | |
| CN108978305A (en) | A kind of complex enzyme formulation and the technique for preparing paper pulp | |
| CN112176750A (en) | P-RC APMP pulping method for hardwood mixed wood | |
| CN103556249B (en) | A kind of palm viscose and preparation method thereof | |
| CN110100057A (en) | The method for manufacturing dissolving pulp | |
| CN1970850A (en) | Method for making bamboo pulp for use in preparation of artificial fiber | |
| CN102182094A (en) | Salix mongolica sulfate pulp bleaching process | |
| CN103498381B (en) | A kind of pineapple fiber pulp and preparation method thereof | |
| CN104098704A (en) | Preparation method for paper pulp containing multiple functional groups | |
| CN1219615A (en) | Method for manufacturing artificial fibre pulp from all stalk of ambari hemp | |
| CN101089247A (en) | Method for preparing viscose staple fibre using cotton stalk | |
| CN102373637A (en) | Pretreatment process for producing bamboo fibers with bamboos | |
| CN101215720A (en) | Preparation method of Chinese alpine rush pulp for producing viscose fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080709 |