ES2000019B3 - BLEACHING PROCEDURE FOR CHEMICAL PAPER PASTES. - Google Patents
BLEACHING PROCEDURE FOR CHEMICAL PAPER PASTES.Info
- Publication number
- ES2000019B3 ES2000019B3 ES86420266T ES86420266T ES2000019B3 ES 2000019 B3 ES2000019 B3 ES 2000019B3 ES 86420266 T ES86420266 T ES 86420266T ES 86420266 T ES86420266 T ES 86420266T ES 2000019 B3 ES2000019 B3 ES 2000019B3
- Authority
- ES
- Spain
- Prior art keywords
- pulp
- alkaline extraction
- treatment
- chlorine dioxide
- chemical paper
- 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 - Lifetime
Links
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
- D21C9/1026—Other features in bleaching processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Detergent Compositions (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
1. Process for bleaching chemical papermaking pulps in a bleaching sequence including, in succession, a treatment of the pulp by means of chlorine and chlorine dioxide acting in a single bath, a first alkaline extraction by means of sodium hydroxide, a treatment of the pulp by means of chlorine dioxide, a second alkaline extraction by means of sodium hydroxide and again a treatment of the pulp by means of chlorine dioxide, characterized in that the pulp is subjected at the same time to the action of oxygen during the first alkaline extraction and to the action of hydrogen peroxide during the second alkaline extraction.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8516332A FR2589494B1 (en) | 1985-10-30 | 1985-10-30 | PROCESS FOR BLEACHING CHEMICAL PAPER PULP |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2000019A4 ES2000019A4 (en) | 1987-09-16 |
ES2000019B3 true ES2000019B3 (en) | 1990-03-16 |
Family
ID=9324477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES86420266T Expired - Lifetime ES2000019B3 (en) | 1985-10-30 | 1986-10-28 | BLEACHING PROCEDURE FOR CHEMICAL PAPER PASTES. |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0222674B1 (en) |
JP (1) | JPS62141188A (en) |
AT (1) | ATE48291T1 (en) |
AU (1) | AU603556B2 (en) |
DE (2) | DE3667184D1 (en) |
ES (1) | ES2000019B3 (en) |
FI (1) | FI85294B (en) |
FR (1) | FR2589494B1 (en) |
NO (1) | NO864319L (en) |
PT (1) | PT83649B (en) |
ZA (1) | ZA868275B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4031597A1 (en) * | 1990-10-05 | 1992-04-09 | Sueddeutsche Kalkstickstoff | METHOD FOR LOW-CHLORINE BLEACHING AND DELIGNIFICATION OF CELLULAR |
US6569284B1 (en) * | 1996-09-24 | 2003-05-27 | International Paper Company | Elemental-chlorine-free bleaching process having an initial Eo or Eop stage |
FR3062138B1 (en) * | 2017-01-23 | 2019-06-07 | Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses | PROCESS FOR WHITENING A PAPER PULP |
-
1985
- 1985-10-30 FR FR8516332A patent/FR2589494B1/en not_active Expired
-
1986
- 1986-10-28 AT AT86420266T patent/ATE48291T1/en not_active IP Right Cessation
- 1986-10-28 EP EP86420266A patent/EP0222674B1/en not_active Expired
- 1986-10-28 ES ES86420266T patent/ES2000019B3/en not_active Expired - Lifetime
- 1986-10-28 DE DE8686420266T patent/DE3667184D1/en not_active Revoked
- 1986-10-28 DE DE198686420266T patent/DE222674T1/en active Pending
- 1986-10-29 PT PT83649A patent/PT83649B/en not_active IP Right Cessation
- 1986-10-29 NO NO864319A patent/NO864319L/en unknown
- 1986-10-29 AU AU64492/86A patent/AU603556B2/en not_active Ceased
- 1986-10-29 FI FI864411A patent/FI85294B/en not_active Application Discontinuation
- 1986-10-30 JP JP61259562A patent/JPS62141188A/en active Granted
- 1986-10-30 ZA ZA868275A patent/ZA868275B/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0222674B1 (en) | 1989-11-29 |
PT83649B (en) | 1989-05-31 |
DE222674T1 (en) | 1987-10-15 |
AU6449286A (en) | 1987-05-07 |
EP0222674A1 (en) | 1987-05-20 |
JPS62141188A (en) | 1987-06-24 |
NO864319D0 (en) | 1986-10-29 |
FR2589494A1 (en) | 1987-05-07 |
PT83649A (en) | 1986-11-01 |
JPH0116958B2 (en) | 1989-03-28 |
FI864411A (en) | 1987-05-01 |
AU603556B2 (en) | 1990-11-22 |
NO864319L (en) | 1987-05-04 |
DE3667184D1 (en) | 1990-01-04 |
FR2589494B1 (en) | 1988-07-29 |
FI864411A0 (en) | 1986-10-29 |
ZA868275B (en) | 1987-06-24 |
ATE48291T1 (en) | 1989-12-15 |
ES2000019A4 (en) | 1987-09-16 |
FI85294B (en) | 1991-12-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2457339B1 (en) | ||
SE7902901L (en) | OXYGEN LIGNIFIED BLOCK, CELLULOSIZED PULP WITH OZON | |
SE8504236D0 (en) | IMPROVE OXIDATIVE EXTRACTION | |
SE8100373L (en) | PROCEDURE FOR OZONE WHITING OF PAPER Pulp | |
FR2566015B1 (en) | PROCESS FOR BLEACHING MECHANICAL PASTE WITH HYDROGEN PEROXIDE | |
ATE48290T1 (en) | PROCESSES FOR DELIGNIFICATION AND BLEACHING OF PULP. | |
GB2215350B (en) | Process for bleaching mechanical wood pulp | |
ES2086183T3 (en) | PROCEDURE FOR THE DELIGNIFICATION OF A CHEMICAL PAPER PASTE. | |
DE3364788D1 (en) | Process for producing half-bleached cellulose pulps | |
ES2000019B3 (en) | BLEACHING PROCEDURE FOR CHEMICAL PAPER PASTES. | |
NZ241823A (en) | Process for bleaching paper pulp using peroxymonosulphuric acid then alkaline hydrogen peroxide | |
ES536713A0 (en) | PROCEDURE FOR BLEACHING CHEMICAL BINS | |
ES2120984T3 (en) | A PROCEDURE TO IMPROVE THE SELECTIVITY OF THE DELIGNIFICATION OF A CHEMICAL PAPER PASTE. | |
ES2101830T3 (en) | PULP REDUCTION PROCESS IN PAPER MANUFACTURING. | |
FR2398839A1 (en) | Kraft type paper pulp prepn. without sulphur pollutants - by treating shavings with sodium hydroxide followed by stabilised peroxide | |
ES8702552A1 (en) | Process for the oxidative delignification of demethylated chemical pulp | |
TH10307EX (en) | Process for mechanical bleaching of paper pulp | |
ES548166A0 (en) | PROCEDURE FOR PREPARING CHEMICAL PAPER BINS WITH VIEWS OF THEIR BLEACHING |