FI68684C - Foerfarande foer faergfoerbaettring och luktborttagning av sulfatmassa - Google Patents
Foerfarande foer faergfoerbaettring och luktborttagning av sulfatmassa Download PDFInfo
- Publication number
- FI68684C FI68684C FI793720A FI793720A FI68684C FI 68684 C FI68684 C FI 68684C FI 793720 A FI793720 A FI 793720A FI 793720 A FI793720 A FI 793720A FI 68684 C FI68684 C FI 68684C
- Authority
- FI
- Finland
- Prior art keywords
- pulp
- peroxide
- sulphate
- kraft
- och
- Prior art date
Links
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 23
- 229910021653 sulphate ion Inorganic materials 0.000 abstract description 22
- 239000002655 kraft paper Substances 0.000 abstract description 16
- 150000002978 peroxides Chemical class 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 12
- 238000010411 cooking Methods 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 230000001877 deodorizing effect Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 7
- 238000004061 bleaching Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 238000002386 leaching Methods 0.000 description 4
- 239000005022 packaging material Substances 0.000 description 4
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethyl mercaptane Natural products CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004076 pulp bleaching Methods 0.000 description 1
- 239000013055 pulp slurry Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Artificial Filaments (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2905936 | 1979-02-16 | ||
| DE2905936A DE2905936B1 (de) | 1979-02-16 | 1979-02-16 | Verfahren zum Aufhellen und Desodorieren von Sulfatzellstoff |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI793720A7 FI793720A7 (fi) | 1980-08-17 |
| FI68684B FI68684B (fi) | 1985-06-28 |
| FI68684C true FI68684C (fi) | 1985-10-10 |
Family
ID=6063083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI793720A FI68684C (fi) | 1979-02-16 | 1979-11-27 | Foerfarande foer faergfoerbaettring och luktborttagning av sulfatmassa |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0014753B1 (de) |
| AT (1) | ATE2019T1 (de) |
| CA (1) | CA1129157A (de) |
| DE (2) | DE2905936B1 (de) |
| FI (1) | FI68684C (de) |
| NO (1) | NO793959L (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0073872A1 (de) * | 1981-09-03 | 1983-03-16 | Billerud Uddeholm AB | Chemisches Verfahren in der Papierherstellung |
| SE442414B (sv) * | 1981-09-22 | 1985-12-23 | Holmens Bruk Ab | Sett att minska eller inhibera morkfergningen av massa eller papper i bakvattensystem |
| US4559103A (en) * | 1982-08-05 | 1985-12-17 | Honshu Seishi Kabushiki Kaisha | Packaging paper and packaging material for packaging metallic material and method of producing the same |
| RU2504375C1 (ru) * | 2012-05-23 | 2014-01-20 | Галина Викторовна Сукоян | Фармацевтический состав для лечения заболеваний, связанных с эндотелиальной дисфункцией |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1454339A (en) * | 1921-11-28 | 1923-05-08 | Brown Co | Method of treating cellulose pulp to remove odors therefrom |
| US1632802A (en) * | 1926-08-10 | 1927-06-21 | Brown Co | Process of and apparatus for treating fiber |
| US1774403A (en) * | 1926-09-16 | 1930-08-26 | Brown Co | Process of producing fiber of high alpha cellulose content |
| US2030384A (en) * | 1934-10-18 | 1936-02-11 | Nekoosa Edwards Paper Co | Method of bleaching pulp |
| BE450336A (de) * | 1942-12-09 | 1943-05-31 | ||
| FR2192981B1 (de) * | 1972-07-21 | 1988-11-10 | Air Liquide Fr | |
| IT1071347B (it) * | 1976-03-12 | 1985-04-02 | Interox Sa | Processo per la disinfezione di carta vecchia |
-
1979
- 1979-02-16 DE DE2905936A patent/DE2905936B1/de not_active Withdrawn
- 1979-11-27 FI FI793720A patent/FI68684C/fi not_active IP Right Cessation
- 1979-12-04 EP EP79104899A patent/EP0014753B1/de not_active Expired
- 1979-12-04 DE DE7979104899T patent/DE2964319D1/de not_active Expired
- 1979-12-04 AT AT79104899T patent/ATE2019T1/de not_active IP Right Cessation
- 1979-12-05 NO NO793959A patent/NO793959L/no unknown
-
1980
- 1980-02-13 CA CA345,493A patent/CA1129157A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2964319D1 (en) | 1983-01-20 |
| FI793720A7 (fi) | 1980-08-17 |
| ATE2019T1 (de) | 1982-12-15 |
| FI68684B (fi) | 1985-06-28 |
| EP0014753A1 (de) | 1980-09-03 |
| EP0014753B1 (de) | 1982-12-15 |
| CA1129157A (en) | 1982-08-10 |
| NO793959L (no) | 1980-08-19 |
| DE2905936B1 (de) | 1980-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114174589B (zh) | 漂白纸浆的制造方法 | |
| FI59433B (fi) | Tryckloest flerstegsfoerfarande foer klorfattig blekning av cellulosa | |
| NO921671L (no) | Fremgangsmaate ved bleking av lignocelluloseholdig materiale | |
| US3251731A (en) | Bleaching of wood pulp with a sequestering agent and hydrogen peroxide | |
| ZA923074B (en) | Process for bleaching of lignocellulose-containing material | |
| JPH07111034B2 (ja) | 漂白したリグニン含有セルロ−スパルプの白色度の安定化方法 | |
| GB2227759A (en) | Hydrogen peroxide bleaching process | |
| CA2709526C (en) | Process for production of bleached pulp | |
| FI68684C (fi) | Foerfarande foer faergfoerbaettring och luktborttagning av sulfatmassa | |
| US2882965A (en) | High viscosity, high percentage alpha cellulose from sulfite pulp | |
| US5118389A (en) | Two-stage peroxide bleaching process using different amounts of peroxide on different portions of mechanical pulp | |
| US2125634A (en) | Method of bleaching pulp or paper webs | |
| US4731161A (en) | Semibleaching liquor for Kraft paper products | |
| CN110552226B (zh) | 漂白纸浆的制造方法 | |
| US3377235A (en) | Process for bleaching multi-colored broke with hypochlorites | |
| US1768819A (en) | Bleaching | |
| SE9203122L (sv) | Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen | |
| FI111387B (fi) | Menetelmä massan klooritonta valkaisua varten etikkahapolla hapotusaineena | |
| US1560591A (en) | Process for making paper pulp | |
| CA1129156A (en) | Bleaching stilbene yellow dyed wood pulp | |
| KR850001507B1 (ko) | 제지용 화학펄프의 제조방법 | |
| JP2003247184A (ja) | 製紙用化学パルプの褪色性を改善する方法 | |
| SU1449605A1 (ru) | Способ отбелки сульфитной целлюлозы | |
| SU1612020A1 (ru) | Способ отбелки древесной массы | |
| JPS5852973B2 (ja) | バニリンの製造法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed |
Owner name: DEGUSSA AKTIENGESELLSCHAFT |