CA2651483C - Procedes de pretraitement au carbonate et de reduction en pate de matiere cellulosique - Google Patents
Procedes de pretraitement au carbonate et de reduction en pate de matiere cellulosique Download PDFInfo
- Publication number
- CA2651483C CA2651483C CA2651483A CA2651483A CA2651483C CA 2651483 C CA2651483 C CA 2651483C CA 2651483 A CA2651483 A CA 2651483A CA 2651483 A CA2651483 A CA 2651483A CA 2651483 C CA2651483 C CA 2651483C
- Authority
- CA
- Canada
- Prior art keywords
- carbonate
- pulping
- stage
- pulp
- recited
- 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
- 238000000034 method Methods 0.000 title claims abstract description 114
- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000004537 pulping Methods 0.000 title claims description 133
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title abstract description 127
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 113
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims abstract description 71
- 150000004056 anthraquinones Chemical class 0.000 claims abstract description 67
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 46
- 239000002657 fibrous material Substances 0.000 claims abstract description 32
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 192
- 238000011282 treatment Methods 0.000 claims description 63
- 239000000126 substance Substances 0.000 claims description 58
- 239000000243 solution Substances 0.000 claims description 53
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 39
- 239000002023 wood Substances 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 23
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 20
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 20
- 239000011593 sulfur Substances 0.000 claims description 20
- 229910052717 sulfur Inorganic materials 0.000 claims description 20
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 19
- 239000001913 cellulose Substances 0.000 claims description 12
- 229920002678 cellulose Polymers 0.000 claims description 12
- 241001062472 Stokellia anisodon Species 0.000 claims description 6
- 239000003929 acidic solution Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000010411 cooking Methods 0.000 abstract description 70
- 239000002253 acid Substances 0.000 abstract description 33
- 239000002655 kraft paper Substances 0.000 description 65
- 235000011121 sodium hydroxide Nutrition 0.000 description 62
- 235000017550 sodium carbonate Nutrition 0.000 description 35
- 102100030386 Granzyme A Human genes 0.000 description 19
- 101001009599 Homo sapiens Granzyme A Proteins 0.000 description 19
- 230000008901 benefit Effects 0.000 description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 15
- 238000004061 bleaching Methods 0.000 description 15
- 238000010306 acid treatment Methods 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- 238000011084 recovery Methods 0.000 description 12
- -1 for example Substances 0.000 description 11
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 10
- 229920005610 lignin Polymers 0.000 description 9
- 244000046139 Acer saccharum Species 0.000 description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 7
- 235000014633 carbohydrates Nutrition 0.000 description 7
- 150000001720 carbohydrates Chemical class 0.000 description 7
- 239000011121 hardwood Substances 0.000 description 7
- 238000002203 pretreatment Methods 0.000 description 7
- 235000010319 Acer grandidentatum Nutrition 0.000 description 6
- 235000010328 Acer nigrum Nutrition 0.000 description 6
- 235000002629 Acer saccharinum Nutrition 0.000 description 6
- 235000010157 Acer saccharum subsp saccharum Nutrition 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 239000003513 alkali Substances 0.000 description 6
- 235000012069 sugar maple Nutrition 0.000 description 6
- 239000004155 Chlorine dioxide Substances 0.000 description 5
- 239000007844 bleaching agent Substances 0.000 description 5
- 235000019398 chlorine dioxide Nutrition 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009533 lab test Methods 0.000 description 5
- PCFMUWBCZZUMRX-UHFFFAOYSA-N 9,10-Dihydroxyanthracene Chemical compound C1=CC=C2C(O)=C(C=CC=C3)C3=C(O)C2=C1 PCFMUWBCZZUMRX-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 244000274847 Betula papyrifera Species 0.000 description 3
- 235000009113 Betula papyrifera Nutrition 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 229920002488 Hemicellulose Polymers 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- NJWGQARXZDRHCD-UHFFFAOYSA-N 2-methylanthraquinone Chemical compound C1=CC=C2C(=O)C3=CC(C)=CC=C3C(=O)C2=C1 NJWGQARXZDRHCD-UHFFFAOYSA-N 0.000 description 2
- 235000009109 Betula pendula Nutrition 0.000 description 2
- 235000010928 Betula populifolia Nutrition 0.000 description 2
- 235000002992 Betula pubescens Nutrition 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 241000218978 Populus deltoides Species 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 235000010216 calcium carbonate Nutrition 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- VDQVEACBQKUUSU-UHFFFAOYSA-M disodium;sulfanide Chemical compound [Na+].[Na+].[SH-] VDQVEACBQKUUSU-UHFFFAOYSA-M 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 235000004421 Acer saccharum Nutrition 0.000 description 1
- 241000609240 Ambelania acida Species 0.000 description 1
- 101150081322 LAC3 gene Proteins 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 101100020526 Pycnoporus cinnabarinus LCC3-1 gene Proteins 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000009993 causticizing Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000013101 initial test Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/222—Use of compounds accelerating the pulping processes
-
- 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
-
- 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
Landscapes
- Paper (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74771706P | 2006-05-19 | 2006-05-19 | |
| US60/747,717 | 2006-05-19 | ||
| US82499506P | 2006-09-08 | 2006-09-08 | |
| US60/824,995 | 2006-09-08 | ||
| PCT/US2007/069159 WO2007137127A2 (fr) | 2006-05-19 | 2007-05-17 | Procédés de prétraitement au carbonate et de réduction en pâte de matière cellulosique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2651483A1 CA2651483A1 (fr) | 2007-11-29 |
| CA2651483C true CA2651483C (fr) | 2013-06-18 |
Family
ID=38724018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2651483A Expired - Fee Related CA2651483C (fr) | 2006-05-19 | 2007-05-17 | Procedes de pretraitement au carbonate et de reduction en pate de matiere cellulosique |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20070284068A1 (fr) |
| EP (1) | EP2061927A2 (fr) |
| JP (1) | JP5207191B2 (fr) |
| AR (1) | AR061065A1 (fr) |
| AU (1) | AU2007253774C1 (fr) |
| BR (1) | BRPI0711473A2 (fr) |
| CA (1) | CA2651483C (fr) |
| RU (1) | RU2445414C2 (fr) |
| WO (1) | WO2007137127A2 (fr) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7842161B2 (en) * | 2006-12-18 | 2010-11-30 | The University Of Maine System Board Of Trustees | Pre-extraction and solvent pulping of lignocellulosic material |
| US7824521B2 (en) * | 2006-12-18 | 2010-11-02 | University Of Maine System Board Of Trustees | Process of treating a lignocellulosic material with hemicellulose pre-extraction and hemicellulose adsorption |
| US8262856B2 (en) * | 2007-06-18 | 2012-09-11 | Andritz Inc. | Processes and systems for the bleaching of lignocellulosic pulps following cooking with soda and anthraquinone |
| US8057639B2 (en) | 2008-02-28 | 2011-11-15 | Andritz Inc. | System and method for preextraction of hemicellulose through using a continuous prehydrolysis and steam explosion pretreatment process |
| US8303767B2 (en) | 2008-03-18 | 2012-11-06 | The Research Foundation Of State University Of New York | Methods of pretreating comminuted cellulosic material with carbonate-containing solutions |
| WO2010060052A2 (fr) * | 2008-11-21 | 2010-05-27 | North Carolina State University | Production d'éthanol à partir de biomasse lignocellulosique utilisant un prétraitement à la liqueur verte |
| WO2010115090A1 (fr) * | 2009-04-02 | 2010-10-07 | Auburn University | Procédé de trituration pour la protection de la qualité comprenant des procédés d'extraction d'hémicellulose et traitement de matières lignocellulosiques dont l'hémicellulose est extraite |
| US20100263813A1 (en) * | 2009-04-21 | 2010-10-21 | Andritz Inc. | Green liquor pretreatment of lignocellulosic material |
| FI20115754A0 (fi) * | 2011-03-22 | 2011-07-15 | Andritz Oy | Menetelmä ja järjestely kemiallisen massan käsittelemiseksi |
| AR088750A1 (es) * | 2011-08-30 | 2014-07-02 | Cargill Inc | Procesos de elaboracion de pulpa |
| PT2931968T (pt) * | 2012-12-12 | 2019-01-11 | Univ Dresden Tech | Utilização de ditionito de sódio num processo de polpação de celulose |
Family Cites Families (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1887241A (en) * | 1931-02-10 | 1932-11-08 | Penobscot Chemical Fibre Compa | Process for producing fiber or pulp |
| US4135967A (en) * | 1969-09-26 | 1979-01-23 | Societe Generale De Brevets Industriels Et Ohimiques | Process for producing cellulose pulp by solid phase digestion |
| SE360128C (sv) * | 1970-08-25 | 1983-10-31 | Mo Och Domsjoe Ab | Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali |
| US4087318A (en) * | 1974-03-14 | 1978-05-02 | Mo Och Domsjo Aktiebolag | Oxygen-alkali delignification of lignocellulosic material in the presence of a manganese compound |
| AU505746B2 (en) * | 1976-06-02 | 1979-11-29 | Amcor Limited | Pulping processes |
| SE7612248L (sv) * | 1976-11-03 | 1978-05-04 | Mo Och Domsjoe Ab | Kokning av lignocellulosahaltiga material |
| ZA782384B (en) * | 1977-05-02 | 1979-02-28 | Australian Paper Manufacturers | Alkaline pulping process |
| SE417114B (sv) * | 1977-07-25 | 1981-02-23 | Mo Och Domsjoe Ab | Forfarande for forebyggande av inkrustbildning i cellulosafabriker |
| SE420430B (sv) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel |
| CA1173380A (fr) * | 1980-02-19 | 1984-08-28 | Michael I. Sherman | Hydrolyse acide de la biomasse pour la production d'ethanol |
| US4652341A (en) * | 1980-08-07 | 1987-03-24 | Prior Eric S | Accelerated pulping process |
| SE442881B (sv) * | 1980-11-27 | 1986-02-03 | Mo Och Domsjoe Ab | Forfarande for delignifiering/blekning av cellulosamassa med klordioxid |
| US4436586A (en) * | 1982-01-22 | 1984-03-13 | Kamyr, Inc. | Method of producing kraft pulp using an acid prehydrolysis and pre-extraction |
| US4668340A (en) * | 1984-03-20 | 1987-05-26 | Kamyr, Inc. | Method of countercurrent acid hydrolysis of comminuted cellulosic fibrous material |
| SE452176B (sv) * | 1984-03-28 | 1987-11-16 | Mo Och Domsjoe Ab | Forfarande for framstellning av kveveoxider ur avlutar fran cellulosamassatillverkning |
| SU1227747A1 (ru) * | 1984-07-16 | 1986-04-30 | Ленинградская Ордена Ленина Лесотехническая Академия Им.С.М.Кирова | Способ получени сульфатной целлюлозы дл химической переработки |
| SE453840B (sv) * | 1984-12-21 | 1988-03-07 | Mo Och Domsjoe Ab | Forfarande vid framstellning av cellulosamassa |
| US4851082A (en) * | 1987-04-22 | 1989-07-25 | Director General Of Agency Of Industrial Science And Technology | Pulping process |
| JPS63264991A (ja) * | 1987-04-22 | 1988-11-01 | 工業技術院長 | 無漂白で靭皮から高白色度の未晒化学パルプを高収率で製造する方法 |
| SE459925B (sv) * | 1987-12-23 | 1989-08-21 | Boliden Ab | Avskiljning av harts ur massaavlutar |
| JPH04126885A (ja) * | 1990-09-14 | 1992-04-27 | Akio Onda | 化学パルプの製造方法 |
| JP2940563B2 (ja) * | 1990-12-25 | 1999-08-25 | 日本ピー・エム・シー株式会社 | リファイニング助剤及びリファイニング方法 |
| US5338366A (en) * | 1993-01-04 | 1994-08-16 | Kamyr, Inc. | Acid pre-hydrolysis reactor system |
| US5536366A (en) * | 1993-05-04 | 1996-07-16 | Ahlstrom Machinery Inc. | Digester system for implementing low dissolved solids profiling |
| US5824188A (en) * | 1993-05-04 | 1998-10-20 | Ahlstrom Machinery Inc. | Method of controlling the pressure of a continuous digester using an extraction-dilution |
| US6132556A (en) * | 1993-05-04 | 2000-10-17 | Andritz-Ahlstrom Inc. | Method of controlling pulp digester pressure via liquor extraction |
| US5489363A (en) * | 1993-05-04 | 1996-02-06 | Kamyr, Inc. | Pulping with low dissolved solids for improved pulp strength |
| FI103898B1 (fi) * | 1994-01-24 | 1999-10-15 | Sunds Defibrator Pori Oy | Menetelmä prehydrolysoidun sellun ja/tai sellumassan tuottamiseksi |
| US5522958A (en) * | 1994-07-18 | 1996-06-04 | Pulp And Paper Research Institute Of Canada | Two-stage kraft cooking |
| CA2220408A1 (fr) * | 1995-08-10 | 1997-02-20 | Hiroaki Maeda | Procede permettant de blanchir de la pate de cellulose |
| FI105929B (fi) * | 1996-05-30 | 2000-10-31 | Sunds Defibrator Pori Oy | Parannettu erämenetelmä sulfaattiselluloosan valmistamiseksi |
| US6605350B1 (en) * | 1996-08-23 | 2003-08-12 | Weyerhaeuser Company | Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same |
| SE510706C2 (sv) * | 1997-10-16 | 1999-06-14 | Kvaerner Pulping Tech | Processystem och förfarande för impregnering och basning av flis innan massakokning |
| JPH11286883A (ja) * | 1998-03-31 | 1999-10-19 | Mitsubishi Paper Mills Ltd | クラフトパルプの製造方法 |
| CA2356444C (fr) * | 1999-02-15 | 2009-12-15 | Kiram Ab | Procede de cuisson a l'oxygene de materiau lignocellulosique et de recuperation d'agents chimiques de cuisson |
| CA2318027C (fr) * | 1999-09-13 | 2008-07-08 | Andritz-Ahlstrom Inc. | Traitement de la pate a papier avec un additif ameliorant le rendement ou la resistance |
| SE0300276L (sv) * | 2003-01-31 | 2003-12-09 | Kvaerner Pulping Tech | Förfarande för blekning av cellulosamassa samt bleklinje härför |
| US20070167618A1 (en) * | 2006-01-13 | 2007-07-19 | Celanese Acetate, Llc | Manufacture of cellulose esters: recycle of caustic and/or acid from pre-treatment of pulp |
-
2007
- 2007-05-17 JP JP2009511236A patent/JP5207191B2/ja not_active Expired - Fee Related
- 2007-05-17 EP EP07762238A patent/EP2061927A2/fr not_active Withdrawn
- 2007-05-17 AU AU2007253774A patent/AU2007253774C1/en not_active Ceased
- 2007-05-17 WO PCT/US2007/069159 patent/WO2007137127A2/fr not_active Ceased
- 2007-05-17 RU RU2008150352/12A patent/RU2445414C2/ru not_active IP Right Cessation
- 2007-05-17 BR BRPI0711473-7A patent/BRPI0711473A2/pt not_active IP Right Cessation
- 2007-05-17 US US11/750,101 patent/US20070284068A1/en not_active Abandoned
- 2007-05-17 CA CA2651483A patent/CA2651483C/fr not_active Expired - Fee Related
- 2007-05-21 AR ARP070102200A patent/AR061065A1/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RU2445414C2 (ru) | 2012-03-20 |
| RU2008150352A (ru) | 2010-06-27 |
| AR061065A1 (es) | 2008-07-30 |
| JP5207191B2 (ja) | 2013-06-12 |
| EP2061927A2 (fr) | 2009-05-27 |
| BRPI0711473A2 (pt) | 2011-11-16 |
| AU2007253774B2 (en) | 2011-10-06 |
| WO2007137127A3 (fr) | 2009-05-07 |
| US20070284068A1 (en) | 2007-12-13 |
| JP2009537705A (ja) | 2009-10-29 |
| WO2007137127A2 (fr) | 2007-11-29 |
| AU2007253774C1 (en) | 2012-03-22 |
| AU2007253774A1 (en) | 2007-11-29 |
| CA2651483A1 (fr) | 2007-11-29 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20180517 |