CA2568594C - Method for producing a dissovling pulp - Google Patents
Method for producing a dissovling pulp Download PDFInfo
- Publication number
- CA2568594C CA2568594C CA2568594A CA2568594A CA2568594C CA 2568594 C CA2568594 C CA 2568594C CA 2568594 A CA2568594 A CA 2568594A CA 2568594 A CA2568594 A CA 2568594A CA 2568594 C CA2568594 C CA 2568594C
- Authority
- CA
- Canada
- Prior art keywords
- pulp
- lye
- weight
- content
- cellulose
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 229920002678 cellulose Polymers 0.000 claims abstract description 74
- 239000001913 cellulose Substances 0.000 claims abstract description 74
- 238000000034 method Methods 0.000 claims abstract description 60
- 238000000605 extraction Methods 0.000 claims abstract description 58
- 238000011282 treatment Methods 0.000 claims abstract description 41
- 238000004537 pulping Methods 0.000 claims abstract description 18
- 229920000875 Dissolving pulp Polymers 0.000 claims abstract description 11
- 238000004061 bleaching Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 239000003518 caustics Substances 0.000 claims description 39
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 14
- 229920000433 Lyocell Polymers 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 12
- 238000007669 thermal treatment Methods 0.000 claims description 10
- 229920003086 cellulose ether Polymers 0.000 claims description 9
- 238000001728 nano-filtration Methods 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 229920002301 cellulose acetate Polymers 0.000 claims description 4
- 238000000108 ultra-filtration Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 3
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 claims description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 235000010981 methylcellulose Nutrition 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 208
- 235000011121 sodium hydroxide Nutrition 0.000 description 87
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 13
- 241001070947 Fagus Species 0.000 description 12
- 235000010099 Fagus sylvatica Nutrition 0.000 description 12
- 238000000746 purification Methods 0.000 description 12
- 239000012465 retentate Substances 0.000 description 10
- 239000012466 permeate Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 229920002488 Hemicellulose Polymers 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000003513 alkali Substances 0.000 description 6
- 150000001720 carbohydrates Chemical class 0.000 description 6
- 235000014633 carbohydrates Nutrition 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 239000002655 kraft paper Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 244000166124 Eucalyptus globulus Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- -1 e.g. Polymers 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 229920001221 xylan Polymers 0.000 description 1
- 150000004823 xylans Chemical class 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
- 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
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
-
- 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
- D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
- D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT9532004A AT413548B (de) | 2004-06-02 | 2004-06-02 | Verfahren zur herstellung eines chemiezellstoffes und seine verwendung |
| ATA953/2004 | 2004-06-02 | ||
| PCT/AT2005/000171 WO2005118950A1 (de) | 2004-06-02 | 2005-05-20 | Verfahren zur herstellung eines chemiezellstoffes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2568594A1 CA2568594A1 (en) | 2005-12-15 |
| CA2568594C true CA2568594C (en) | 2013-07-16 |
Family
ID=34842282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2568594A Expired - Fee Related CA2568594C (en) | 2004-06-02 | 2005-05-20 | Method for producing a dissovling pulp |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1753908B1 (no) |
| AT (1) | AT413548B (no) |
| CA (1) | CA2568594C (no) |
| NO (1) | NO338462B1 (no) |
| WO (1) | WO2005118950A1 (no) |
| ZA (1) | ZA200610044B (no) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT503611B1 (de) * | 2006-05-10 | 2009-05-15 | Chemiefaser Lenzing Ag | Verfahren zur herstellung eines zellstoffes |
| AT503610B1 (de) * | 2006-05-10 | 2012-03-15 | Chemiefaser Lenzing Ag | Verfahren zur herstellung eines zellstoffes |
| AT503612A1 (de) * | 2006-05-10 | 2007-11-15 | Chemiefaser Lenzing Ag | Verfahren zur herstellung eines zellstoffes |
| JP2015518248A (ja) | 2012-04-26 | 2015-06-25 | レンツィング アクチェンゲゼルシャフト | 電池セパレータ |
| FI129086B (en) * | 2012-09-14 | 2021-06-30 | Teknologian Tutkimuskeskus Vtt Oy | Method for producing soluble pulp |
| ES2667994T3 (es) | 2013-02-22 | 2018-05-16 | Lenzing Aktiengesellschaft | Separador de batería |
| CN104611973A (zh) * | 2013-11-04 | 2015-05-13 | 新疆光大山河化工科技有限公司 | 一种精制棉黑液处理工艺 |
| EP3347522B1 (en) * | 2015-09-07 | 2020-06-17 | Domsjö Fabriker AB | Novel dissolving pulp |
| JP2017224611A (ja) * | 2017-07-06 | 2017-12-21 | レンツィング アクチェンゲゼルシャフト | 電池セパレータ |
| SE1850733A1 (en) * | 2018-06-15 | 2019-12-16 | Valmet Oy | Method and assembly for optimizing filtrate circulation in a kraft process |
| SE2250793A1 (en) * | 2022-06-27 | 2023-12-28 | Valmet Oy | Method for processing cellulose pulp obtained from a kraft process |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI49438C (fi) * | 1973-07-23 | 1980-12-23 | Keskuslaboratorio | Foerfarande foer avlaegsnande av hemicellulosa ur hemicellulosahaltiga alkaliloesningar i processcirkulation |
| US4270914A (en) * | 1979-10-26 | 1981-06-02 | Borregaard Industries Limited | Process for controlling hemicellulose concentration during the mercerization of cellulose |
| US5589053A (en) * | 1995-11-03 | 1996-12-31 | Huron Tech Incorporated | Electrolysis process for removal of caustic in hemicellulose caustic |
| WO1997023279A1 (de) * | 1995-12-23 | 1997-07-03 | Krebs & Co. Ag | Verfahren zur reinigung einer mit fadenmolekülen verschmutzten flüssigkeit |
-
2004
- 2004-06-02 AT AT9532004A patent/AT413548B/de not_active IP Right Cessation
-
2005
- 2005-05-20 CA CA2568594A patent/CA2568594C/en not_active Expired - Fee Related
- 2005-05-20 ZA ZA200610044A patent/ZA200610044B/xx unknown
- 2005-05-20 EP EP05741840.2A patent/EP1753908B1/de active Active
- 2005-05-20 WO PCT/AT2005/000171 patent/WO2005118950A1/de not_active Application Discontinuation
-
2006
- 2006-11-24 NO NO20065354A patent/NO338462B1/no not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005118950A1 (de) | 2005-12-15 |
| NO338462B1 (no) | 2016-08-22 |
| ATA9532004A (de) | 2005-08-15 |
| EP1753908A1 (de) | 2007-02-21 |
| ZA200610044B (en) | 2008-02-27 |
| NO20065354L (no) | 2007-01-31 |
| AT413548B (de) | 2006-03-15 |
| EP1753908B1 (de) | 2016-02-03 |
| CA2568594A1 (en) | 2005-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20220520 |