SE467977B - Foerfarande och reaktor foer delignifiering av massa med syre vid laag- och medelkoncentration - Google Patents
Foerfarande och reaktor foer delignifiering av massa med syre vid laag- och medelkoncentrationInfo
- Publication number
- SE467977B SE467977B SE8503153A SE8503153A SE467977B SE 467977 B SE467977 B SE 467977B SE 8503153 A SE8503153 A SE 8503153A SE 8503153 A SE8503153 A SE 8503153A SE 467977 B SE467977 B SE 467977B
- Authority
- SE
- Sweden
- Prior art keywords
- bleaching
- mass
- ozone
- oxygen
- cellulosic
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 16
- 238000004061 bleaching Methods 0.000 claims description 32
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 21
- 229910052760 oxygen Inorganic materials 0.000 claims description 21
- 239000001301 oxygen Substances 0.000 claims description 21
- 238000005406 washing Methods 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 12
- 150000002978 peroxides Chemical class 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000007844 bleaching agent Substances 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000003113 alkalizing effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 229920006395 saturated elastomer Polymers 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000000725 suspension Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002002 slurry Substances 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
- B08B1/143—Wipes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0206984A AT380496B (de) | 1984-06-27 | 1984-06-27 | Verfahren und reaktor zur delignifizierung von zellstoff mit sauerstoff |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8503153D0 SE8503153D0 (sv) | 1985-06-25 |
| SE8503153L SE8503153L (sv) | 1985-12-28 |
| SE467977B true SE467977B (sv) | 1992-10-12 |
Family
ID=3527111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8503153A SE467977B (sv) | 1984-06-27 | 1985-06-25 | Foerfarande och reaktor foer delignifiering av massa med syre vid laag- och medelkoncentration |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4834837A (fr) |
| AT (1) | AT380496B (fr) |
| CA (1) | CA1249404A (fr) |
| FI (1) | FI80484C (fr) |
| SE (1) | SE467977B (fr) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5217575A (en) * | 1988-10-18 | 1993-06-08 | Kamyr Ab | Process for oxygen bleaching using two vertical reactors |
| US5173153A (en) * | 1991-01-03 | 1992-12-22 | Union Camp Patent Holding, Inc. | Process for enhanced oxygen delignification using high consistency and a split alkali addition |
| US5409570A (en) * | 1989-02-15 | 1995-04-25 | Union Camp Patent Holding, Inc. | Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone |
| US5525195A (en) * | 1989-02-15 | 1996-06-11 | Union Camp Patent Holding, Inc. | Process for high consistency delignification using a low consistency alkali pretreatment |
| US5217574A (en) * | 1989-02-15 | 1993-06-08 | Union Camp Patent Holdings Inc. | Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp |
| US5085734A (en) * | 1989-02-15 | 1992-02-04 | Union Camp Patent Holding, Inc. | Methods of high consistency oxygen delignification using a low consistency alkali pretreatment |
| US5188708A (en) * | 1989-02-15 | 1993-02-23 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification followed by ozone relignification |
| AT395180B (de) * | 1989-08-16 | 1992-10-12 | Andritz Ag Maschf | Verfahren zur zerkleinerung von materialien und anlage zu dessen durchfuehrung |
| AT404740B (de) * | 1989-10-30 | 1999-02-25 | Chemiefaser Lenzing Ag | Verfahren zum chlorfreien bleichen von zellstoffen |
| AU636173B2 (en) * | 1989-10-30 | 1993-04-22 | Lenzing Aktiengesellschaft | Method for the chlorine-free bleaching of pulps |
| AT393701B (de) * | 1989-12-22 | 1991-12-10 | Schmidding Wilh Gmbh & Co | Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens |
| US5164043A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
| US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
| US5328564A (en) * | 1990-09-17 | 1994-07-12 | Kamyr, Inc. | Modified digestion of paper pulp followed by ozone bleaching |
| US6398908B1 (en) | 1991-04-30 | 2002-06-04 | Eka Nobel Ab | Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound |
| ZA924351B (en) * | 1991-06-27 | 1993-03-31 | Ahlstroem Oy | Ozone bleaching process |
| SE500335C2 (sv) * | 1992-10-26 | 1994-06-06 | Sca Wifsta Oestrand Ab | Blekning av sulfatmassa med peroxid-ozon-peroxid |
| SE512137C2 (sv) * | 1992-10-29 | 2000-01-31 | Eka Chemicals Ab | Förfarande för blekning av lignocellulosahaltig massa |
| US5554259A (en) * | 1993-10-01 | 1996-09-10 | Union Camp Patent Holdings, Inc. | Reduction of salt scale precipitation by control of process stream Ph and salt concentration |
| US6210527B1 (en) | 1994-03-14 | 2001-04-03 | The Boc Group, Inc. | Pulp bleaching method wherein an ozone bleaching waste stream is scrubbed to form an oxygen containing stream |
| US20050087315A1 (en) | 2003-10-28 | 2005-04-28 | Donovan Joseph R. | Low consistency oxygen delignification process |
| US7297225B2 (en) * | 2004-06-22 | 2007-11-20 | Georgia-Pacific Consumer Products Lp | Process for high temperature peroxide bleaching of pulp with cool discharge |
| US9512560B2 (en) | 2014-10-31 | 2016-12-06 | Quantum Technologies, Inc. | Short oxygen delignification method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4196043A (en) * | 1970-12-21 | 1980-04-01 | Scott Paper Company | Kraft pulp bleaching and recovery process |
| US4177105A (en) * | 1973-05-22 | 1979-12-04 | Kamyr, Incorporated | Apparatus for delignifying and bleaching cellulose pulp |
| SE379069B (fr) * | 1973-08-27 | 1975-09-22 | Kamyr Ab | |
| US4372812A (en) * | 1978-04-07 | 1983-02-08 | International Paper Company | Chlorine free process for bleaching lignocellulosic pulp |
| US4259150A (en) * | 1978-12-18 | 1981-03-31 | Kamyr Inc. | Plural stage mixing and thickening oxygen bleaching process |
| US4298427A (en) * | 1979-06-15 | 1981-11-03 | Weyerhaeuser Company | Method and apparatus for intimately mixing oxygen and pulp while using an alkali to extract bleaching by-products |
-
1984
- 1984-06-27 AT AT0206984A patent/AT380496B/de not_active IP Right Cessation
-
1985
- 1985-06-11 FI FI852324A patent/FI80484C/fi not_active IP Right Cessation
- 1985-06-25 SE SE8503153A patent/SE467977B/sv not_active IP Right Cessation
- 1985-06-27 CA CA000485566A patent/CA1249404A/fr not_active Expired
-
1987
- 1987-07-22 US US07/076,383 patent/US4834837A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| SE8503153L (sv) | 1985-12-28 |
| FI852324A0 (fi) | 1985-06-11 |
| FI80484B (fi) | 1990-02-28 |
| SE8503153D0 (sv) | 1985-06-25 |
| FI852324L (fi) | 1985-12-28 |
| CA1249404A (fr) | 1989-01-31 |
| AT380496B (de) | 1986-05-26 |
| ATA206984A (de) | 1985-10-15 |
| US4834837A (en) | 1989-05-30 |
| FI80484C (fi) | 1990-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
Ref document number: 8503153-2 Effective date: 19940110 Format of ref document f/p: F |