SE9403818L - Method of ozone bleaching - Google Patents
Method of ozone bleachingInfo
- Publication number
- SE9403818L SE9403818L SE9403818A SE9403818A SE9403818L SE 9403818 L SE9403818 L SE 9403818L SE 9403818 A SE9403818 A SE 9403818A SE 9403818 A SE9403818 A SE 9403818A SE 9403818 L SE9403818 L SE 9403818L
- Authority
- SE
- Sweden
- Prior art keywords
- ozone
- pulp
- content
- residual gas
- paper
- Prior art date
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title abstract 4
- 238000004061 bleaching Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 229920001131 Pulp (paper) Polymers 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 2
- 239000000126 substance Substances 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
- D21C11/08—Deodorisation ; Elimination of malodorous compounds, e.g. sulfur compounds such as hydrogen sulfide or mercaptans, from gas streams
-
- 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
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
Abstract
Method associated with bleaching chemical paper pulp, in which a pulp suspension is brought into contact with an ozone-containing gas, after which a residual gas (6), having a partially remaining ozone content, is separated off from the pulp suspension. The ozone-containing residual gas is subsequently utilized for odour treatment of malodorous condensates (8), with relatively low COD-content, which are obtained when producing paper or paper pulp.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9403818A SE9403818L (en) | 1994-11-08 | 1994-11-08 | Method of ozone bleaching |
AT95938081T ATE203292T1 (en) | 1994-11-08 | 1995-10-17 | ODOR TREATMENT OF ODOR-SMELLING CONDENSATE WITH RESIDUAL GASES CONTAINING OZONE |
AU38842/95A AU3884295A (en) | 1994-11-08 | 1995-10-17 | Odour treatment of malodorous condensates with ozone-containing residual gas |
PCT/SE1995/001207 WO1996014464A1 (en) | 1994-11-08 | 1995-10-17 | Odour treatment of malodorous condensates with ozone-containing residual gas |
EP95938081A EP0791101B1 (en) | 1994-11-08 | 1995-10-17 | Odour treatment of malodorous condensates with ozone-containing residual gas |
DE69521809T DE69521809T2 (en) | 1994-11-08 | 1995-10-17 | ODOR TREATMENT OF SMELLING CONDENSATES WITH OZONE-CONTAINING RESIDUAL GAS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9403818A SE9403818L (en) | 1994-11-08 | 1994-11-08 | Method of ozone bleaching |
Publications (2)
Publication Number | Publication Date |
---|---|
SE9403818D0 SE9403818D0 (en) | 1994-11-08 |
SE9403818L true SE9403818L (en) | 1996-05-09 |
Family
ID=20395879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9403818A SE9403818L (en) | 1994-11-08 | 1994-11-08 | Method of ozone bleaching |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0791101B1 (en) |
AT (1) | ATE203292T1 (en) |
AU (1) | AU3884295A (en) |
DE (1) | DE69521809T2 (en) |
SE (1) | SE9403818L (en) |
WO (1) | WO1996014464A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6348129B1 (en) * | 2000-04-28 | 2002-02-19 | Praxair Technology Inc | Treatment of pulp mill condensate with ozone |
TW590789B (en) | 2001-09-14 | 2004-06-11 | Ind Tech Res Inst | Method of treating an air stream containing VOCs |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO150971C (en) * | 1981-04-10 | 1985-01-23 | Papirind Forskningsinst | PROCEDURE FOR CLEANING OF CONDENSATIVES FROM THE SULPHATE PROCESS |
SE9200183L (en) * | 1992-01-23 | 1993-07-24 | Kamyr Ab | SEPARATORY DEVICE AND PROCEDURE |
CA2107764A1 (en) * | 1992-03-02 | 1993-09-03 | Lawrence A. Hinkey | Combined ozone destruction and fiber scrubbing in paper pulp mills |
-
1994
- 1994-11-08 SE SE9403818A patent/SE9403818L/en not_active Application Discontinuation
-
1995
- 1995-10-17 EP EP95938081A patent/EP0791101B1/en not_active Expired - Lifetime
- 1995-10-17 WO PCT/SE1995/001207 patent/WO1996014464A1/en active IP Right Grant
- 1995-10-17 AT AT95938081T patent/ATE203292T1/en active
- 1995-10-17 DE DE69521809T patent/DE69521809T2/en not_active Expired - Fee Related
- 1995-10-17 AU AU38842/95A patent/AU3884295A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
ATE203292T1 (en) | 2001-08-15 |
DE69521809T2 (en) | 2002-04-04 |
EP0791101B1 (en) | 2001-07-18 |
EP0791101A1 (en) | 1997-08-27 |
SE9403818D0 (en) | 1994-11-08 |
AU3884295A (en) | 1996-05-31 |
WO1996014464A1 (en) | 1996-05-17 |
DE69521809D1 (en) | 2001-08-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 9403818-9 |