DE285530T1 - Verfahren zum bleichen von zellstoffen. - Google Patents
Verfahren zum bleichen von zellstoffen.Info
- Publication number
- DE285530T1 DE285530T1 DE198888420102T DE88420102T DE285530T1 DE 285530 T1 DE285530 T1 DE 285530T1 DE 198888420102 T DE198888420102 T DE 198888420102T DE 88420102 T DE88420102 T DE 88420102T DE 285530 T1 DE285530 T1 DE 285530T1
- Authority
- DE
- Germany
- Prior art keywords
- process according
- hydrogen peroxide
- temperature
- agent
- carried out
- 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.)
- Pending
Links
- 238000004061 bleaching Methods 0.000 title claims abstract 3
- 238000000034 method Methods 0.000 title claims 12
- 230000001413 cellular effect Effects 0.000 title 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract 18
- 239000008139 complexing agent Substances 0.000 claims abstract 5
- 239000003352 sequestering agent Substances 0.000 claims abstract 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 3
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 claims 2
- 229920006395 saturated elastomer Polymers 0.000 claims 2
- 230000000087 stabilizing effect Effects 0.000 claims 2
- 239000004115 Sodium Silicate Substances 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 159000000003 magnesium salts Chemical class 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims 1
- 229910052911 sodium silicate Inorganic materials 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 238000010009 beating Methods 0.000 abstract 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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
- Treatment Of Fiber Materials (AREA)
- Dental Preparations (AREA)
- Noodles (AREA)
- Glass Compositions (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Seasonings (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8704844A FR2613388B1 (fr) | 1987-04-02 | 1987-04-02 | Procede de blanchiment de pates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE285530T1 true DE285530T1 (de) | 1989-03-30 |
Family
ID=9349862
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE198888420102T Pending DE285530T1 (de) | 1987-04-02 | 1988-03-29 | Verfahren zum bleichen von zellstoffen. |
| DE8888420102T Expired - Fee Related DE3877403T2 (de) | 1987-04-02 | 1988-03-29 | Verfahren zum bleichen von zellstoffen. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8888420102T Expired - Fee Related DE3877403T2 (de) | 1987-04-02 | 1988-03-29 | Verfahren zum bleichen von zellstoffen. |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0285530B1 (fr) |
| JP (1) | JPS63256786A (fr) |
| AT (1) | ATE84581T1 (fr) |
| AU (1) | AU606930B2 (fr) |
| CA (1) | CA1310797C (fr) |
| DE (2) | DE285530T1 (fr) |
| ES (1) | ES2004846T3 (fr) |
| FI (1) | FI93749C (fr) |
| FR (1) | FR2613388B1 (fr) |
| NO (1) | NO173886C (fr) |
| NZ (1) | NZ224144A (fr) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2647641B1 (fr) * | 1989-06-05 | 1992-01-17 | Atochem | Procede de fabrication de pulpes vegetales blanchies |
| SE467006B (sv) | 1989-06-06 | 1992-05-11 | Eka Nobel Ab | Blekning av kemisk massa med peroxid varvid massan foerst behandlas med en komplexbildare |
| DE69004492T3 (de) * | 1989-06-06 | 2001-11-15 | Eka Nobel Ab, Bohus | Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen. |
| FR2659363B1 (fr) * | 1990-03-07 | 1996-04-19 | Atochem | Procede de preparation de pates a haut rendement blanchies. |
| SE466061B (sv) * | 1990-04-23 | 1991-12-09 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne |
| SE9001481L (sv) * | 1990-04-23 | 1991-10-24 | Eka Nobel Ab | Reduktion av halogenorganiska foereningar i blekeriavlopp |
| FR2661431B1 (fr) * | 1990-04-30 | 1992-07-17 | Atochem | Procede de blanchiment au peroxyde de l'hydrogene de pates a papier a haut rendement. |
| FR2661430B1 (fr) * | 1990-04-30 | 1992-07-17 | Atochem | Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement. |
| SE468355B (sv) * | 1991-04-30 | 1992-12-21 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med komplexbildare och ozon |
| ZA955290B (en) * | 1994-07-11 | 1996-12-27 | Ingersoll Rand Co | Peroxide bleaching process for cellulosic and lignocellulosic material |
| CA2533535C (fr) * | 2003-10-02 | 2012-01-03 | Andritz Inc. | Depulpage mecanique multi-phase au peroxyde alcalin avec traitement par installation de decharge a raffineur |
| US8298373B2 (en) | 2008-02-07 | 2012-10-30 | University Of New Brunswick | Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL202075A (fr) * | 1954-11-19 | Fmc Corp | ||
| US3251731A (en) * | 1963-02-11 | 1966-05-17 | Andrew J Gard | Bleaching of wood pulp with a sequestering agent and hydrogen peroxide |
| JPS5344563A (en) * | 1976-10-05 | 1978-04-21 | Ouchi Shinkou Kagaku Kougiyou | Preparation of benzothiazolylsulfenamide |
| FI61215B (fi) * | 1976-11-23 | 1982-02-26 | Defibrator Ab | Saett och anordning att kontinuerligt framstaella lignocellulosahaltiga fibermaterial |
-
1987
- 1987-04-02 FR FR8704844A patent/FR2613388B1/fr not_active Expired - Lifetime
-
1988
- 1988-03-29 EP EP88420102A patent/EP0285530B1/fr not_active Expired - Lifetime
- 1988-03-29 NO NO881404A patent/NO173886C/no unknown
- 1988-03-29 DE DE198888420102T patent/DE285530T1/de active Pending
- 1988-03-29 AT AT88420102T patent/ATE84581T1/de active
- 1988-03-29 ES ES198888420102T patent/ES2004846T3/es not_active Expired - Lifetime
- 1988-03-29 DE DE8888420102T patent/DE3877403T2/de not_active Expired - Fee Related
- 1988-03-31 CA CA000563118A patent/CA1310797C/fr not_active Expired - Lifetime
- 1988-03-31 FI FI881544A patent/FI93749C/fi not_active IP Right Cessation
- 1988-03-31 AU AU14067/88A patent/AU606930B2/en not_active Ceased
- 1988-04-02 JP JP63082116A patent/JPS63256786A/ja active Granted
- 1988-04-06 NZ NZ224144A patent/NZ224144A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3877403D1 (de) | 1993-02-25 |
| NO173886C (no) | 1994-02-16 |
| AU606930B2 (en) | 1991-02-21 |
| DE3877403T2 (de) | 1993-05-19 |
| NO173886B (no) | 1993-11-08 |
| NO881404L (no) | 1988-10-03 |
| JPS63256786A (ja) | 1988-10-24 |
| FI881544A (fi) | 1988-10-03 |
| NO881404D0 (no) | 1988-03-29 |
| EP0285530A1 (fr) | 1988-10-05 |
| FI93749C (fi) | 1995-05-26 |
| FI881544A0 (fi) | 1988-03-31 |
| JPH0156197B2 (fr) | 1989-11-29 |
| NZ224144A (en) | 1989-07-27 |
| FR2613388A1 (fr) | 1988-10-07 |
| AU1406788A (en) | 1988-10-06 |
| ES2004846T3 (es) | 1993-06-16 |
| EP0285530B1 (fr) | 1993-01-13 |
| FR2613388B1 (fr) | 1990-05-04 |
| ES2004846A4 (es) | 1989-02-16 |
| CA1310797C (fr) | 1992-12-01 |
| ATE84581T1 (de) | 1993-01-15 |
| FI93749B (fi) | 1995-02-15 |
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