CN101161928B - Bleaching method of broussonetia papyrifera white bark bio-pulp - Google Patents
Bleaching method of broussonetia papyrifera white bark bio-pulp Download PDFInfo
- Publication number
- CN101161928B CN101161928B CN2007101783687A CN200710178368A CN101161928B CN 101161928 B CN101161928 B CN 101161928B CN 2007101783687 A CN2007101783687 A CN 2007101783687A CN 200710178368 A CN200710178368 A CN 200710178368A CN 101161928 B CN101161928 B CN 101161928B
- Authority
- CN
- China
- Prior art keywords
- pulp
- bleaching
- biological
- bio
- screened
- 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.)
- Expired - Fee Related
Links
- 238000004061 bleaching Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 36
- 235000001459 whitebark Nutrition 0.000 title claims abstract 4
- 241000705930 Broussonetia papyrifera Species 0.000 title abstract description 30
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000012216 screening Methods 0.000 claims abstract description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 15
- 238000005119 centrifugation Methods 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 4
- 235000008708 Morus alba Nutrition 0.000 claims 9
- 240000000249 Morus alba Species 0.000 claims 9
- VYQNWZOUAUKGHI-UHFFFAOYSA-N monobenzone Chemical compound C1=CC(O)=CC=C1OCC1=CC=CC=C1 VYQNWZOUAUKGHI-UHFFFAOYSA-N 0.000 claims 8
- 238000009897 hydrogen peroxide bleaching Methods 0.000 claims 5
- 229960003330 pentetic acid Drugs 0.000 claims 3
- 239000011734 sodium Substances 0.000 claims 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 239000007844 bleaching agent Substances 0.000 abstract description 11
- 239000000835 fiber Substances 0.000 abstract description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000460 chlorine Substances 0.000 abstract description 5
- 229910052801 chlorine Inorganic materials 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 4
- 238000004537 pulping Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000053 physical method Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000012286 potassium permanganate Substances 0.000 abstract 1
- 241000933832 Broussonetia Species 0.000 description 18
- 238000005266 casting Methods 0.000 description 8
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 8
- 239000004744 fabric Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000009396 hybridization Methods 0.000 description 7
- 239000004155 Chlorine dioxide Substances 0.000 description 4
- 241000565667 Mesodon inflectus Species 0.000 description 4
- -1 MgSO 4 Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 235000019398 chlorine dioxide Nutrition 0.000 description 4
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002896 organic halogen compounds Chemical class 0.000 description 1
- 238000004076 pulp bleaching Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
The invention discloses a bleaching method of broussonetia papyrifera white bark bio-pulp, which comprises the steps of firstly passing the broussonetia papyrifera white bark bio-pulp through a 20-60-mesh slotted screen, then carrying out centrifugal separation, and finally carrying out supplementary bleaching by using alkaline hydrogen peroxide. The method can remove most of colored substances in the biological pulp by using a physical method of slotted screening and centrifugal separation, effectively reduce the dust degree in the biological pulp, and improve the whiteness of the biological pulp from 38-44% ISO to 80-85% ISO, KMnO4The value is reduced from 14 to 16 to below 5.81, the fiber yield is 90 to 95 percent, the average fiber length is reduced from 6.34mm to 6.29mm, and the requirements for producing white paper or high-grade paper are completely met. In addition, the method does not use chlorine-containing bleaching agent, has simple and convenient process, lower production cost and no environmental pollution, and has wide application prospect in the field of pulping and papermaking.
Description
Technical field
The present invention relates to the method for bleaching of the method for bleaching of pulping and paper-making field bast fibers, particularly a kind of broussonetia papyrifera white bast bio-pulp.
Background technology
Existing soft paper pulp, according to the difference of pulping process, its whiteness is all between 20%～40%ISO.In order to satisfy the needs of producing blank sheet of paper or high-grade paper kind, must bleach processing to above-mentioned paper pulp.Traditional method for bleaching adopts chlorination, alkali treatment, hypochlorite to carry out tri-stage bleaching; Modern means such as method for bleaching employing chlorine dioxide are carried out multistage bleaching.Owing to all use chlorine-containing bleaching in the above-mentioned method for bleaching, as chlorine, hypochlorite etc., inevitably can produce a large amount of generation toxicant AOX (adsorbable organohalogen compounds), very easily cause serious water pollution.Adopt chlorine dioxide to bleach, though ambient pollution burden alleviates to some extent, chlorine dioxide floats agent to be difficult to preserve, must use as early as possible after the preparation, and the preparation flow more complicated of chlorine dioxide, equipment investment is bigger.The core of TCF (completely without the chlorine) method for bleaching that the modern times are novel is oxygen-alkali treatment, though oxygen-alkali treatment can not produce AOX, needs working pressure container and oxygen generator, the bleaching process complexity, and energy consumption is higher.Said method all can not well satisfy the requirement of modern environment-friendly type bleaching process, thereby the assistant officer waits to develop and a kind ofly can improve the novel dioxde pulp bleaching process that bleaching efficiency can not produce carrying capacity of environment again.
Summary of the invention
The method for bleaching that the purpose of this invention is to provide a kind of broussonetia papyrifera white bast bio-pulp.
The method for bleaching of broussonetia papyrifera white bast bio-pulp provided by the invention may further comprise the steps:
1) broussonetia papyrifera white bast bio-pulp is screened with the 20-60 sighting slit, obtain screening broussonetia papyrifera white bast bio-pulp;
2) broussonetia papyrifera white bast bio-pulp after the above-mentioned screening is carried out centrifugation, obtain screening the broussonetia papyrifera white bast bio-pulp of purification;
3) above-mentioned broussonetia papyrifera white bast bio-pulp through the screening purified treatment is bleached with hydrogen peroxide under alkali condition, wherein, the pH value of the broussonetia papyrifera white bast bio-pulp that this screening purifies is 10-13, and bleaching temperature is 60-80 ℃.
In the above-mentioned method for bleaching, before step 1) screening, also the broussonetia papyrifera white bast bio-pulp water is sized mixing to mass percentage concentration be 0.5-1.0%.By screening, the tiny casting skin in the broussonetia papyrifera white bast bio-pulp and the shagreen of no solid shape can filter screen cloth, and stay the broussonetia papyrifera white bast bio-pulp that is on the screen cloth.
In step 2) before the step with centrifugal separation, also the broussonetia papyrifera white bast bio-pulp water is sized mixing to mass percentage concentration be 0.2-1.0%, preferred 0.5%.Used centrifugal separation method preferentially selects for use conical refiner to carry out purified treatment, thereby reaches the purpose of removing remaining casting skin in the broussonetia papyrifera white bast bio-pulp.
To through the broussonetia papyrifera white bast bio-pulp after the above-mentioned Screening Treatment, also to carry out post-bleach according to the method for step 3), wherein, bleaching temperature is preferably 70 ℃, and bleaching time is 2-4h, is preferably 2.5h; The mass percentage concentration of this bio-pulp is 10-12%, preferred 12%; The quality of hydrogen peroxide is the 2-6% of the broussonetia papyrifera white bast bio-pulp gross mass of screening purification, preferred 4%.In order to reach better bleaching effect, also need to add bleaching assistant, diethylene triamine pentacetic acid (DTPA) (DTPA), MgSO
4, Na
2SiO
3Diethylene triamine pentacetic acid (DTPA), MgSO
4, Na
2SiO
3Addition be respectively 0.10-0.50%, 0.02-0.10%, the 2-5% of the broussonetia papyrifera white bast bio-pulp gross mass that screening purifies, preferred, be respectively 0.25%, 0.05%, 3%.
The method for bleaching of broussonetia papyrifera white bast bio-pulp provided by the invention, utilize these two kinds of physical methods of slotted screen and centrifugation can remove most of band color substance in the bio-pulp, effectively reduce dirt count wherein, the whiteness of bio-pulp rises to 65%-70%ISO by 38%-44%ISO, KMnO
4Value drops to 6-8 by 14-16, uses a small amount of hydrogen peroxide to carry out post-bleach afterwards and handles, and the whiteness of bio-pulp is further improved, and brings up to 80%-85%ISO by 65%-70%ISO, KMnO
4Value reaches below 5.81, and the fiber yield is 90%-95%, and the average length of fiber is reduced to 6.29mm by 6.34mm, satisfies the needs of producing blank sheet of paper or high-grade paper kind fully.In addition, this method is not used chlorine-containing bleaching, need not use special pressure container and oxygen generator, and technology is easy, and production cost is lower, and non-environmental-pollution has broad application prospects in the pulping and paper-making field.
The specific embodiment
The present invention will be further described below in conjunction with specific embodiment, but the present invention is not limited to following examples.
Used hybridization paper mulberry is available from planting environmental organism scientific ﹠ technical corporation among the embodiment in the Dalian, and other materials is kind commonly used.
The bleaching of embodiment 1, broussonetia white bast biological slurry
The method that the broussonetia white bast biological slurry is bleached provided by the invention comprises the steps:
1) broussonetia white bast biological is starched water size mixing to mass percentage concentration be after 0.8%, adopt 40 sighting slits sieve that the broussonetia white bast biological slurry is screened, forming the tiny casting skin of dust point and the shagreen of no solid shape in the bio-pulp and can filter screen cloth, on the screen cloth is that broussonetia white bast biological is starched and stay.
2) the bio-pulp water after will screening size mixing to mass percentage concentration be 0.5%, utilize conical refiner further to remove remaining casting skin in the slurry.
After measured as can be known, through the slurry of the broussonetia white bast biological after the above-mentioned screening purified treatment, whiteness rises to 67.9% by 43.2%ISO, KMnO
4Value drops to 6.23 by 14.56.
3) utilize alkaline hydrogen peroxide to carry out post-bleach in above-mentioned broussonetia white bast biological slurry, this bleaching conditions is: the concentration of broussonetia white bast biological slurry is 12%, regulate the pH value of this screening purified treatment artifact slurry to 10-13 with NaOH, the addition of this NaOH is 4% of an above-mentioned bio-pulp quality, the addition of hydrogen peroxide is 4% of this bio-pulp quality, bleaching time is 2.5h, and bleaching temperature is 70 ℃; Auxiliary agent diethylene triamine pentacetic acid (DTPA) (DTPA), MgSO
4, Na
2SiO
3Addition be respectively 0.25%, 0.05%, 3% of this bio-pulp quality.
Through behind the above-mentioned hydrogen peroxide post-bleach, the whiteness of broussonetia white bast biological slurry is further brought up to 82.4%ISO, KMnO by 67.9%ISO
4Value drops to 5.31 by 6.23, and the average length of fiber is reduced to 6.29mm by 6.34mm, and yield is 95%.
The bleaching of embodiment 2, the white skin bio-pulp of wild paper mulberry
1) the white skin bio-pulp of wild paper mulberry water is sized mixing to mass percentage concentration be after 1.0%, adopt 60 sighting slits sieve that the white skin bio-pulp of wild paper mulberry is screened, forming the tiny casting skin of dust point and the shagreen of no solid shape in the bio-pulp and can filter screen cloth, on the screen cloth is the white skin bio-pulp of wild paper mulberry and stay.
2) the bio-pulp water after will screening size mixing to mass percentage concentration be 0.5%, utilize conical refiner further to remove remaining casting skin in the slurry.
After measured as can be known, through the white skin bio-pulp of wild paper mulberry after the above-mentioned screening purified treatment, whiteness rises to 66.7% by 43.2%ISO, KMnO
4Value drops to 6.72 by 14.56.
3) utilize alkaline hydrogen peroxide to carry out post-bleach the white skin bio-pulp of above-mentioned wild paper mulberry, this bleaching conditions is: the concentration of the white skin bio-pulp of wild paper mulberry is 12%, regulate this screening with NaOH and purify the pH value of artifact slurry to 10-13, the addition of NaOH is 4.5% of an above-mentioned bio-pulp quality, the addition of hydrogen peroxide is 4.5% of this bio-pulp quality, bleaching time is 2.5h, and bleaching temperature is 80 ℃; Auxiliary agent diethylene triamine pentacetic acid (DTPA) (DTPA), MgSO
4, Na
2SiO
3Addition be respectively 0.25%, 0.05%, 3% of this bio-pulp quality.
Through behind the above-mentioned hydrogen peroxide post-bleach, the whiteness of the white skin bio-pulp of wild paper mulberry is further brought up to 81.2%ISO, KMnO by 66.7%ISO
4Value drops to 5.81 by 6.72, and the average length of fiber is reduced to 6.29mm by 6.34mm, and yield is 93.5%.
The bleaching of embodiment 3, hybridization broussonetia papyrifera white bast bio-pulp
1) will hybridize the broussonetia papyrifera white bast bio-pulp water size mixing to mass percentage concentration be after 0.6%, adopt 30 sighting slits sieve that the hybridization broussonetia papyrifera white bast bio-pulp is screened, forming the tiny casting skin of dust point and the shagreen of no solid shape in the bio-pulp and can filter screen cloth, on the screen cloth is to hybridize broussonetia papyrifera white bast bio-pulp and stay.
2) the bio-pulp water after will screening size mixing to mass percentage concentration be 0.6%, utilize conical refiner further to remove remaining casting skin in the slurry.
After measured as can be known, through the hybridization broussonetia papyrifera white bast bio-pulp after the above-mentioned screening purified treatment, whiteness rises to 68.9% by 43.2%ISO, KMnO
4Value drops to 6.07 by 14.56.
3) utilize alkaline hydrogen peroxide to carry out post-bleach above-mentioned hybridization broussonetia papyrifera white bast bio-pulp, this bleaching conditions is: the concentration of hybridization broussonetia papyrifera white bast bio-pulp is 12%, regulate the pH value of this screening purified treatment artifact slurry to 10-13 with NaOH, the addition of this NaOH is 5% of an above-mentioned bio-pulp quality, the addition of hydrogen peroxide is 5% of this bio-pulp quality, bleaching time is 3.0h, and bleaching temperature is 70 ℃, auxiliary agent diethylene triamine pentacetic acid (DTPA) (DTPA), MgSO
4, Na
2SiO
3Addition be respectively 0.25%, 0.05%, 3% of this bio-pulp quality.
Through behind the above-mentioned hydrogen peroxide post-bleach, the whiteness of hybridization broussonetia papyrifera white bast bio-pulp is further brought up to 84.3%ISO, KMnO by 68.9%ISO
4Value drops to 5.28 by 6.07, and the average length of fiber is reduced to 6.29mm by 6.34mm, and yield is 94%.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101783687A CN101161928B (en) | 2007-11-29 | 2007-11-29 | Bleaching method of broussonetia papyrifera white bark bio-pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101783687A CN101161928B (en) | 2007-11-29 | 2007-11-29 | Bleaching method of broussonetia papyrifera white bark bio-pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101161928A CN101161928A (en) | 2008-04-16 |
| CN101161928B true CN101161928B (en) | 2010-08-11 |
Family
ID=39296907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101783687A Expired - Fee Related CN101161928B (en) | 2007-11-29 | 2007-11-29 | Bleaching method of broussonetia papyrifera white bark bio-pulp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101161928B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101526267B1 (en) * | 2008-11-28 | 2015-06-11 | (주)아모레퍼시픽 | Mask pack composed of the cosmetic cotton-like material produced from a paper mulberry |
| CN104264526B (en) * | 2014-09-29 | 2016-09-21 | 长沙理工大学 | Preparation method of firecracker red oil paper |
| CN108130777B (en) * | 2017-12-22 | 2021-02-02 | 齐鲁工业大学 | Normal-pressure low-temperature clean pulping process |
-
2007
- 2007-11-29 CN CN2007101783687A patent/CN101161928B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 白延坤 等.光叶楮白皮生物法制浆可漂性的研究.中国造纸学报22 1.2007,22(1),19-22. |
| 白延坤等.光叶楮白皮生物法制浆可漂性的研究.中国造纸学报22 1.2007,22(1),19-22. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101161928A (en) | 2008-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101328695B (en) | Production process of cotton pulp for manufacturing automobile oil-gas filter paper | |
| FI63607C (en) | FREQUENCY REFRIGERATION FOR CELLULOSE MASS IN UTBYTESOMRAODET 65-95% | |
| JP5467041B2 (en) | Cellulose fiber degumming method | |
| TWI585267B (en) | Chemical pulping method | |
| CN114687234B (en) | Method for preparing fluff pulp by utilizing bamboo and fluff pulp prepared by same | |
| CN108425259A (en) | The method of waste paper recycling reconstruction | |
| CN102561083B (en) | Method for bleaching broadleaf wood pre-conditioning refiner chemical pretreatment alkaline peroxide mechanical pulp (P-RC APMP) by using H2O2/optical brightening agent (OBA) | |
| CN1308160A (en) | Technological process of producing viscose fiber size with bamboo and timber material | |
| CN110904709A (en) | Production method of high-whiteness waste paper deinking and bleaching paper pulp | |
| CN101161928B (en) | Bleaching method of broussonetia papyrifera white bark bio-pulp | |
| CN102535236A (en) | Deciduous wood P-RC APMP (pre-conditioning refiner chemical pretreatment alkaline peroxide mechanical pulp) pulping process using magnesium alkali | |
| CN101492891B (en) | Method for producing bleached mechanical pulp with oil palm empty fruit fiber | |
| CN100357503C (en) | Preparation method of eulaliopsisbinata fiber for textile | |
| CN102191708B (en) | Method for carrying out elemental chlorine free (ECF) multistage bleaching on masson pine kraft pulp by using glyoxal | |
| JPH07505926A (en) | Fine pulp and white paper products | |
| SE420329B (en) | PROCEDURE FOR THE PREPARATION OF GRINDING PAPER | |
| CN105568740B (en) | Low whiteness sulfate leaf wood pulpboard of a kind of high intensity and preparation method thereof | |
| CN102644212B (en) | Preparation method of industrial hemp full stalk pulp | |
| CN100357504C (en) | Preparation method of corn ear shell fiber for textile | |
| CN106638094A (en) | P-RC APMP (pre-conditioning refiner chemical pretreatment alkaline peroxide mechanical pulp) pulping method of alkalescent hydrogen peroxide bleaching system | |
| AU2010200081B2 (en) | Process for adjusting the pH of a cellulosic pulp, production of pulp or paper from cellulosic pulp and use of (bi)carbonate removal for reducing the consumption of acid | |
| CN114351497B (en) | Preparation process of broad-leaved wood bleached mechanical pulp | |
| CN1177101C (en) | Chemical treatment and hot pulping process of wood pulp and dreg pulp with mechanical mill and stone mill | |
| CN1590641A (en) | Production technology of bleaching salfate reed mixed pulp | |
| US7264690B2 (en) | Catalyzer for clean pulping and process for using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20141129 |
|
| EXPY | Termination of patent right or utility model |