WO2005064077A1 - Procede de reduction en pate par bio-oxydation en cycle ferme a zero rejet - Google Patents

Procede de reduction en pate par bio-oxydation en cycle ferme a zero rejet Download PDF

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Publication number
WO2005064077A1
WO2005064077A1 PCT/CN2003/001122 CN0301122W WO2005064077A1 WO 2005064077 A1 WO2005064077 A1 WO 2005064077A1 CN 0301122 W CN0301122 W CN 0301122W WO 2005064077 A1 WO2005064077 A1 WO 2005064077A1
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Prior art keywords
water
pulp
active oxygen
biological
oxygen
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PCT/CN2003/001122
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English (en)
Chinese (zh)
Inventor
Xiuquan Mei
Laisu Xie
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Xiuquan Mei
Laisu Xie
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Application filed by Xiuquan Mei, Laisu Xie filed Critical Xiuquan Mei
Priority to CNB2003801108066A priority Critical patent/CN100420788C/zh
Priority to AU2003292885A priority patent/AU2003292885A1/en
Priority to PCT/CN2003/001122 priority patent/WO2005064077A1/fr
Publication of WO2005064077A1 publication Critical patent/WO2005064077A1/fr

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Definitions

  • the invention discloses a completely closed zero-emission biological / oxidation method for cleaning paper pulp and a preparation method thereof.
  • the present invention more specifically relates to a method for completely closed, self-circulating, acid-free, alkali-free, chlorine-free, anthraquinone-free, retort-free, bleach-free, zero-hold, pollution-free clean papermaking pulp. Background of the invention
  • Forests are the lungs of the earth's life. In addition to cultivating water sources, preventing soil erosion, regulating the climate, etc., forests can also absorb carbon dioxide and emit oxygen. Forests have not only ecological value but also economic value. However, the current world is at a rate of 0 8 m 2 per 700 xl diminishing rainforest at a rate of 5 0 x 10V per minute to reduce, if not strictly controlled to continue indiscriminate desire indiscriminate logging, 40 years later, the world's growing population, humans will Facing the difficulty of breathing without oxygen.
  • Non-wood cellulose raw materials are divided into plant fiber chemistry: 1. Gramineous fiber raw materials; 2. Bast fiber raw materials; 3. Seed hair fiber raw materials; 4. Four types of leaf fiber raw materials, with a total fiber content of 48% ⁇ 84 %, Grass fiber length is mostly longer than wood fiber, cellulose is mainly used for papermaking. Whether it is cellulose extracted from wood or grass, it can be used as the skeleton material in pulping, and it can be used to make medium and high-grade pulp. Studies have confirmed that non-wood raw reeds, velvet reeds, king bamboo grass, reeds, and various types of bamboo are about 9 million acres.
  • reed pulp is mainly concentrated in Xinjiang Bohu Paper Mill, Changyang Paper, Jinhe Paper, Chenming Paper, etc., with a total annual output of 220,000 tons and an annual consumption of about 500,000 tons of raw materials, accounting for 21 ⁇ 6%, all with strong acid, strong alkali, strong chlorine pollution process.
  • the literature reports useful alkaline hydrogen peroxide methods and biological The raw materials are pre-processed by mechanical methods, but acid, alkali, chlorine, and anthraquinone are still used in the cooking, dipping, and bleaching sections to cause serious pollution to the environment.
  • Table 1 Determination of the comprehensive cellulose content of each raw material by the sodium chlorite method Unit:% Raw material origin Comprehensive cellulose raw material origin Comprehensive cellulose Fish front Spruce Xiaoxinganling 73.0 Wheat grass Hebei 71.3 Red pine Daxinganling 69. 6 Bagasse Guangdong 75.6 Daguan Yang Henan 81.6 West Longsu grass plant West 76. 7 Green bamboo Zhejiang 69. 5 Sorghum stalk Hebei 66. 4 Dan bamboo Guangdong 67.2 Corn stalk Hebei 84. 9 Reed Hubei 75.4 Cao Ningxia 79.8 Dead grass Hubei 76. 6 Hemlock camphora Heilongjiang 74. 9 Cotton stalk Jiangsu 75.1 Bauma shell Sichuan 84.3 Straw Hebei 64. 0
  • Type A fiber refers to fibers with normal layering in the secondary wall, and the thickness is single-wall thickness. Comparison of energy spectrum peaks in different levels of reed fiber cell wall
  • Tables 2, 3, and 4 are from “Plant Fiber Chemistry Textbook", China Light Industry Press, 2001. 2. The pollution is serious. Although the paper industry has made every effort to improve the traditional old technology, it has so far used strong acids, alkalis, and strong chlorine. In recent years, it has been developed to use anthraquinones. Fused ring aromatic hydrocarbons have been identified as carcinogenic substances, such as the well-known carcinogenic structural formula composed of anthracene:
  • 10-Methyl-1,2 Benzoanthracene or Ethylene-1,2 Benzoanthracene was bleached with chlorine dioxide.
  • the US Environmental Protection Agency issued a ban on the use of chlorine in paper pulp bleaching in April 2000.
  • the chemical order also stipulates that paper containing anthracene is prohibited from being used in food packaging.
  • 54% of the world's paper mills are turning to chlorine dioxide as a bleaching agent, but 91% of the chlorine dioxide is combined with other organic compounds, and the remaining 9% of chlorine is emitted to nature, which is still harmful to humans. living environment.
  • Oxidation bleached pulp can be traced back to the early 1950s. In 1952, Soviet wood chemists Niki eih and ARim first discovered that oxygen could bleach. Twelve years later, in 1964, French scientist Rebeve and others discovered that magnesium salts can protect cellulose from cellulose. Oxidative degradation, another 6 years. In 1970, the United States, France, and Switzerland established laboratories. In the same year, Enstrd in South Africa established the world's first chlorine dioxide bleaching plant. In 1972, the United States established a 12t / day chlorine dioxide bleaching plant. Patented chlorine bleaching, due to large cellulose loss, energy consumption, water consumption and high cost Other factors did not enter the industrialization.
  • CN 1296099A published on May 23, 2001 and US 5,691,193 patent applications published on November 25, 1997 disclose a process for treating pulp with microorganisms (or enzymes) and bleaching chlorine-free bleached pulp with hydrogen peroxide.
  • these two inventive methods actually only involve the final bleaching treatment step after the pulp is made, and are not a chlorine-free bleaching complete paper pulp process from plant raw materials to finished pulp as in the present invention; and, hydrogen peroxide therein Caustic soda is still used in the bleaching process, and the delignification in the pulping section still uses the traditional process of caustic soda-anthraquinone pulping, that is, in the pulp making process before the hydrogen peroxide bleaching step, caustic soda is still inseparable- Anthraquinone indicates that these patent applications do not fundamentally solve the pollution problem of the paper industry.
  • the present invention is a complete clean delignification and uses an environmentally friendly oxygen paper pulp process. Not only does it not have a special cooking section and bleaching section
  • non-wood fiber agricultural wastes such as wheat straw, straw, cotton stalks, and reeds as raw materials for paper pulp, using the unique, novel and non-polluting paper pulp technology of the present invention.
  • the two major world problems of shortage of raw materials and serious pollution in the paper industry have been solved.
  • the method of the present invention is suitable for using non-wood as a raw material, in order to form a supporting industrial chain of high- and middle-grade paper, the method is also applicable to a pulp and papermaking process using wood as a raw material. Summary of the invention
  • the invention provides a fully-closed, self-circulating, zero-emission, pollution-free biological / oxidation method for cleaning paper pulp technology and a preparation method thereof.
  • the method uses active oxygen radicals generated in an electronic redox reactor by biological enzymes and molecular oxygen to transform and separate lignin, changes the chromophore groups in the interlayer of plant cells, and obtains pulp.
  • This method fundamentally changes the pulping process of chemicals with severe pollution such as acid, alkali, chlorine, and anthraquinone in the traditional process.
  • Using the invention not only eliminates the two major sections of cooking and bleaching with serious pollution, but also makes use of rich Annual resources can also save energy and water and reduce product costs.
  • the process of the present invention is a series of key technologies for the current pulp and paper industry to completely get rid of environmental pollution by rubbing and shredding, purifying, biological pretreatment, and oxygen pressure mixing and grinding into pulp.
  • the biological / oxidation method according to the present invention refers to: firstly treating paper pulp raw materials with microorganisms or biological enzymes, sterilizing them, and then using active oxygen in the presence of a cellulose protecting agent composed of metal ions and metal ion complexes. , B mixed into a slurry.
  • the microorganisms refer to: white rot fungi, Pleurotus spp., Soft rot fungi and Verticillium versicolor, and mixtures thereof; biological enzymes include: peroxidase (HRP), lignin peroxidation Enzymes (LiP -Hl H2, H3 ...-H10), manganese peroxidase (MnP), glyoxal oxidase, soybean seed coat peroxidase (SHP), laccase, hydrogen peroxide generating enzyme , The third generation of xylanase, ligninase, polyphenol oxidase, catalase, lipoxygenase and coenzyme, and mixtures thereof, preferably horseradish peroxidase, hydrogen peroxide to generate said reactive oxygen species A: Including free radicals generated by 0 2 and H 2 0 2 or various free radicals generated with metals.
  • HRP peroxidase
  • MnP manganese peroxida
  • molecular oxygen provides energy when it produces an oxidation-reduction reaction through an ion radiator, and finally generates water.
  • Each electron received in the process of receiving electrons generates an oxygen radical, collectively referred to as reactive oxygen A, such as an electron reduction to generate a superoxide anion radical 0 2 + e ⁇ 0] / H00 ⁇
  • reactive oxygen A such as an electron reduction to generate a superoxide anion radical 0 2 + e ⁇ 0] / H00 ⁇
  • Two-electron reduction produces hydrogen peroxide 0 2 + 2e + 2 ⁇ + ⁇ ⁇ 2 0 2 .
  • the active oxygen B includes 0 3 and free radicals generated in the presence of an organic acid in an aqueous solution, for example, 0 3 neutralizes biological bacteria in an aqueous solution containing organic acids (organic acids such as oxalic acid and acetic acid). Or the enzymes are continuously generated ⁇ 2 2 for decolorization reactions, such as soft rot fungi, white rot fungi, soybean seed coat peroxidase (SHP), laccase and catalase in the aqueous phase. , Such as 0 3 + ⁇ 2 0- ⁇ 0 ⁇ + OH "+ 0 2 , and for example H 2 0 2 produced under the combined action of ethylenedioxidase and horseradish peroxidase.
  • the biological or biological enzyme may be Use as described above.
  • the amount of enzyme should usually be such that it has a concentration of 0.001 in the material being processed.
  • the amount of microorganisms is not particularly limited, and generally 1 to 1 billion pieces / ml of material.
  • the amount of H 2 0 2 is not particularly limited, and the concentration in the treated material (including medium water and non-wood or wood fibers) is generally 0.1-1.5%.
  • the concentration of 0 3 in the processed materials is generally 1-15umol / L.
  • the cellulose protecting agent comprises a metal ion and a ligand thereof with 03
  • enzymes such as horseradish peroxidase or lipoxygenase or catalase and coenzyme
  • functional cellulose is formed with superoxide anion radical (0,) and hydrogen peroxide (H 2 0 2 ) in water. Protection System.
  • the metal ion is selected from Mg ++ , Fe ++ , Mn ++ , Cu ++ , Ca ++ , Zn ++ , Si ++ , Al +++ or a combination thereof. These metal ions are generally in the form of a salt Use, such as iron sulfite, magnesium carbonate, etc. Their concentration in the processed material is generally 1-1000 ppm.
  • Metal ion ligands include compounds capable of chelating with the above metals, including difluorenyl diethylene oxide (DMD), diethylene triamine pentaacetic acid (DTPA), ethylene diamine tetraacetic acid (EDTA), dimethyl Sulfoxide, sodium alkylsulfonate, polyoxyethylene alkyl ether, etc., or a mixture thereof. Their amount is 0.01-1.5% based on the amount of absolute dry pulp.
  • the non-cooking method refers to the elimination of the traditional cooking section, and the use of active oxygen B is added dropwise to the disc mill through the rotating heat of the mill to generate an energy transfer reaction to penetrate the raw material, so that the cellulose is transformed from the intercellular layer.
  • the traditional bleach-free section refers to the conversion of the chromophores in lignin to colorless by using the combined action of active oxygen A and B without using traditional bulky and expensive bleaching equipment and heavily polluted chloride bleaching agents.
  • the biological / oxidative cleaning paper pulp technology of the present invention includes the following steps: firstly cleaning non-wood or wood and other raw materials, and treating them with microorganisms and / or biological enzymes, and then sterilizing, and then using metal ions In the presence of a cellulose protective agent composed of a metal ion ligand, it is treated with active oxygen A, and further mixed with active oxygen A and B to form a slurry in an aqueous medium.
  • Raw material purification system It is to pre-process raw materials, cut them into 20 to 40 bands, rub them into thick wires with a rubbing and splitting machine, remove impurities with a dust collector, wash with circulating water, and use a screw conveyor to input with automatic stirring.
  • the material is sterilized and controlled at a temperature of 100-150 ° C, at 0.1 ° /.
  • the original slurry is fed into the mill with a screw feeder, and the active oxygen A prepared before is added dropwise in a grinding process.
  • the dropping amount and the slurry ratio are 1: 0.12-0.15, and the slurry is mixed with the slurry.
  • the machine speed is 1200—1400 / min, the mill gap is 0.15-0.1 mm, the temperature is 40-80 ° C, the pulp consistency is 12%-15%, the pH value is 2 ⁇ 5-3.8, and the ISO whiteness of the pulp is 60- 75. ;
  • the second mill is added with a concentration of 1-15 mol / L of active oxygen B mixed with the slurry, the mill speed is 1200-1400 / min, the mill gap is adjusted to 0 ⁇ 12-0.
  • the pulp yield of the process of the present invention is 61-78% (see details) Flow chart) .
  • the full-closed self-circulation and zero-discharge in the present invention are: sent from the raw materials to the biological / oxidation reactor after pretreatment, and all the water in the process flow is returned to the self-circulation, and one part is the water after the raw material purification treatment, which is purified by centrifugation After the slag is transported away, the slurry is sent to the conventional beating section, and the fresh water produced is sent to the self-circulating water purification tank.
  • the purification tank is equipped with a 0.1% -0.15% tri-base oxygen or ozone generator (0 3 generator). Clear water produces a decolorization reaction.
  • the water contains trace oxygen free radicals and is pumped into the circulating water use system (see the process flow chart for details).
  • the second is the water from the biological / oxidation step, which is purified by centrifugation and treated with a conventional thickener.
  • the material is sent to the storage tank and into the papermaking workshop.
  • the generated water is filtered into the self-circulating water purification tank, and the treated purified water is pumped into the raw material purification system, bioreactor, sterilization system, oxygen mill system, and screening. System, repeated self-recycling.
  • the process of the invention has no gas discharge and no black liquor discharge, and the proportion of discharged solid waste residue is 12-22%, which does not pollute the environment.
  • the waste residue is sent to a biological treatment tank for other purposes.
  • FIG. 1 is a process flow chart of the present invention.
  • the first is raw material purification, then Treatment in the presence of enzymes in a biological oxidation reactor, followed by sterilization, oxygen milling in the presence of active oxygen A and B, screening, centrifugal purification, pulping, wastewater entering the self-circulating water purifier and treatment with ozone.
  • the treated water can be After entering the above processes, the solid matter is rich in rich organic matter, does not contain harmful elements, strong acids and alkalis, and can be used as fertilizer for other purposes, thereby achieving self-circulation, zero emissions, and no pollution.
  • Example one is raw material purification, then Treatment in the presence of enzymes in a biological oxidation reactor, followed by sterilization, oxygen milling in the presence of active oxygen A and B, screening, centrifugal purification, pulping, wastewater entering the self-circulating water purifier and treatment with ozone.
  • the treated water can be After entering the above processes, the solid matter is rich in rich organic matter, does not contain harmful elements, strong acids
  • reaction temperature 40 "C, 11 value 2.5, add 10 ⁇ mo 1 / L spicy Caigen peroxidase (HRP), add 12 mol / L soybean seed coat peroxidase (SHP), stirrer speed 30 / min, Let it stand for 1h, dehydrate and clean the material. Under the condition that the oxygen can be circulated automatically, the stacking shed film is covered, and the oxygen is circulated from the bottom to the top.
  • the material is discharged for 36h and sterilized.
  • the water content is 30%.
  • the rotation speed of the mill is 600-1200 / min.
  • the gap of the mill is 0.2-0.15mm. After coarse screening, the pulp and slag is transferred to the coarse mill and ground and sieved.
  • Example 1 Take 100 parts by weight of the original slurry in Example 1, and use a screw feeder to uniformly and continuously feed the mill into the mill.
  • 1.2% H 2 0 2 prepared beforehand is added dropwise, the drop amount and the slurry ratio 1: 0.12 mixed with slurry, mill speed is 1200-1400 / min, mill gap is adjusted to 0.15-0.1mm, temperature is 60 * C, pulp concentration reaches 12% -15%, pH value is 3.8, observe pulp ISO The whiteness is 60-75.
  • L The second mill drops the concentration of 10umol / L ozone and 10umol / L spicy> peroxidase, the mill speed is 1200-1400 / min, the mill gap is adjusted to 0.
  • Example 4 The same procedure was performed as in Example 1, except that horseradish peroxidase was replaced with the same amount of hydrogen peroxide generating enzyme.
  • Example 4
  • Example 5 The same procedure was performed as in Example 2, except that 10umol / L of lignin peroxidase was used instead of horseradish peroxidase, and the ISO whiteness was 75-86. The yield of pulp is 75%.
  • Example 5 The same procedure was performed as in Example 2, except that 10umol / L of lignin peroxidase was used instead of horseradish peroxidase, and the ISO whiteness was 75-86. The yield of pulp is 75%.
  • Example 5 Take 100 parts by weight of the original slurry in Example 5, use a screw feeder to continuously and uniformly feed the mill to the mill. In a milling process, a compound composed of 0.1% 0 2 and 1.5% H 2 0 2 prepared beforehand is added dropwise. Oxygen, dripping amount and slurry ratio 1: 0.15 mixed with slurry, mill speed 1200-1400 / min, mill gap adjusted to 0.15-0.1mm, temperature 60 ° C, slurry concentration 12% -15%, pH 4.5. Observed pulp ISO whiteness is 60-75.
  • the second mill is added dropwise with a concentration of 10umol / L laccase and 10umol / L soybean seed coat peroxidase, the mill speed is 1200-1400 / min, the mill gap is adjusted to 0.1mm, the pulp consistency is 12-15%, and the temperature is 60 ° C.
  • the pressure is 0.6MPa, the pH value is 4.5, and the ISO whiteness is 75-86.
  • Into the conventional centrifugal sieve purification, round screen concentration, beating, storage Pulp process system. If you need to increase the whiteness again, you can repeat the above operation process again, and the pulp yield is 76%.
  • Example eight The same procedure as in Example 5 was performed, except that horseradish peroxidase was replaced with the same amount of hydrogen peroxide generating enzyme.
  • Example eight The same procedure as in Example 5 was performed, except that horseradish peroxidase was replaced with the same amount of hydrogen peroxide generating enzyme.
  • the inventor commissioned the pilot plant products of cotton stalks, mulberry, poplar pulp and cotton stalk fine paddles to Tianjin University of Science and Technology for testing. The results are detailed in the test report (Table 5). From the test data, biological / oxidative pulping is not only used for wood but also for non-wood, such as agricultural waste cotton stalk is an available pulping raw material.
  • the inventor produced the world's first cotton stalk paper pattern with this patented technology, which was verified by Tianjin University of Science and Technology and China Pulp and Paper Research Institute to meet national standards (see Table 5 for details).

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

La présente invention concerne un procédé de réduction en pâte par bio-oxydation en cycle fermé à zéro rejet. Le procédé consiste: (i) à former des radicaux libres à oxygène actif par une réaction de réduction électronique avec des oxygènes moléculaires dans une unité de réaction ionique; (ii) à transformer et à séparer les lignines avec les radicaux libres à oxygène actif et une bio-enzyme, et à provoquer un changement des groupes de coloration dans les intercouches de cellules végétales; (iii) à obtenir la pâte. Le présent procédé change fondamentalement la technologie classique faisant intervenir l'acide, une base, du chlore, l'anthraquinone etc. présentant de graves pollutions. L'invention non seulement permet de diminuer l'impact de la cuisson et du blanchiment sur l'environnement mais elle permet également l'utilisation de ressources naturelles à renouvellement annuel, elle permet également d'économiser l'énergie et l'eau.
PCT/CN2003/001122 2003-12-25 2003-12-25 Procede de reduction en pate par bio-oxydation en cycle ferme a zero rejet WO2005064077A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CNB2003801108066A CN100420788C (zh) 2003-12-25 2003-12-25 全封闭零排放生物/氧化法清洁造纸浆方法和由此获得的纸浆
AU2003292885A AU2003292885A1 (en) 2003-12-25 2003-12-25 Closed cycle zero discharge bio-oxidizing pulping process
PCT/CN2003/001122 WO2005064077A1 (fr) 2003-12-25 2003-12-25 Procede de reduction en pate par bio-oxydation en cycle ferme a zero rejet

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PCT/CN2003/001122 WO2005064077A1 (fr) 2003-12-25 2003-12-25 Procede de reduction en pate par bio-oxydation en cycle ferme a zero rejet

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103046425A (zh) * 2013-01-14 2013-04-17 岳阳林纸股份有限公司 一种以马尾松为原料的半化学浆的制浆方法
CN107119479A (zh) * 2014-11-18 2017-09-01 沙良宝 一种低溶盐清洁纸浆及其制备方法
US10995454B2 (en) * 2013-12-19 2021-05-04 3M Innovative Properties Company Using recycled waste water to make nonwoven fibrous materials suitable for use in a pollution control device or in a firestop

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105780563B (zh) * 2016-03-01 2017-09-08 朱晓平 一种零排放的氧化热搓组合法制秸秆浆工艺
CN106120432B (zh) * 2016-06-29 2018-08-17 江汉大学 利用玉米苞皮一锅法制造纸浆的方法

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CN1107530A (zh) * 1992-10-23 1995-08-30 麦克米伦布洛都有限公司 改进的臭氧漂白
CN1142555A (zh) * 1996-01-15 1997-02-12 南京林业大学 纸浆多段漂白碱处理段单线态氧强化漂白配方和工艺
DE19612194A1 (de) * 1996-03-27 1997-10-02 Consortium Elektrochem Ind Mehrkomponentensystem zum Verändern, Abbau oder Bleichen von Lignin, ligninhaltigen Materialien oder ähnlichen Stoffen sowie Verfahren zu seiner Anwendung
CN1297085A (zh) * 1999-11-19 2001-05-30 普拉塞尔技术有限公司 在纸浆漂白中应用活化臭氧的方法
DE10126988A1 (de) * 2001-06-05 2002-12-12 Call Krimhild Enzymatische Systeme zur Generierung aktiver Sauerstoffspezies zur Reaktion mit anderen Percursern zur Oxidation und/oder Bleiche

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Publication number Priority date Publication date Assignee Title
CN1107530A (zh) * 1992-10-23 1995-08-30 麦克米伦布洛都有限公司 改进的臭氧漂白
CN1142555A (zh) * 1996-01-15 1997-02-12 南京林业大学 纸浆多段漂白碱处理段单线态氧强化漂白配方和工艺
DE19612194A1 (de) * 1996-03-27 1997-10-02 Consortium Elektrochem Ind Mehrkomponentensystem zum Verändern, Abbau oder Bleichen von Lignin, ligninhaltigen Materialien oder ähnlichen Stoffen sowie Verfahren zu seiner Anwendung
CN1297085A (zh) * 1999-11-19 2001-05-30 普拉塞尔技术有限公司 在纸浆漂白中应用活化臭氧的方法
DE10126988A1 (de) * 2001-06-05 2002-12-12 Call Krimhild Enzymatische Systeme zur Generierung aktiver Sauerstoffspezies zur Reaktion mit anderen Percursern zur Oxidation und/oder Bleiche

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103046425A (zh) * 2013-01-14 2013-04-17 岳阳林纸股份有限公司 一种以马尾松为原料的半化学浆的制浆方法
US10995454B2 (en) * 2013-12-19 2021-05-04 3M Innovative Properties Company Using recycled waste water to make nonwoven fibrous materials suitable for use in a pollution control device or in a firestop
CN107119479A (zh) * 2014-11-18 2017-09-01 沙良宝 一种低溶盐清洁纸浆及其制备方法
CN107119479B (zh) * 2014-11-18 2020-07-10 沙良宝 一种低溶盐清洁纸浆及其制备方法

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CN100420788C (zh) 2008-09-24
AU2003292885A1 (en) 2005-07-21

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