SE9403155L - Method for ozone bleaching of wood pulp - Google Patents
Method for ozone bleaching of wood pulpInfo
- Publication number
- SE9403155L SE9403155L SE9403155A SE9403155A SE9403155L SE 9403155 L SE9403155 L SE 9403155L SE 9403155 A SE9403155 A SE 9403155A SE 9403155 A SE9403155 A SE 9403155A SE 9403155 L SE9403155 L SE 9403155L
- Authority
- SE
- Sweden
- Prior art keywords
- wood pulp
- ozone
- bleaching
- pulp
- ozone bleaching
- Prior art date
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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
A method for rapid bleaching of high consistency wood pulp using ozone gas provides for generating ozone in a carrier gas at a concentration of five percent to fifteen percent by weight, introducing the ozone in its carrier gas together with the wood pulp into a bleaching reactor at a pressure of more than one atmosphere, retaining the pulp and ozone gas in the bleaching reactor for a required bleaching time, and discharging the bleached pulp to a receiving vessel for further processing.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12473793A | 1993-09-21 | 1993-09-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
SE9403155D0 SE9403155D0 (en) | 1994-09-21 |
SE9403155L true SE9403155L (en) | 1995-03-22 |
Family
ID=22416576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9403155A SE9403155L (en) | 1993-09-21 | 1994-09-21 | Method for ozone bleaching of wood pulp |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT403704B (en) |
CA (1) | CA2132165A1 (en) |
SE (1) | SE9403155L (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI981808A (en) * | 1998-08-24 | 2000-02-25 | Crs Reactor Engineering Uk Ltd | Method for bleaching pulp |
-
1994
- 1994-09-15 CA CA002132165A patent/CA2132165A1/en not_active Abandoned
- 1994-09-21 SE SE9403155A patent/SE9403155L/en not_active Application Discontinuation
- 1994-09-21 AT AT0178894A patent/AT403704B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE9403155D0 (en) | 1994-09-21 |
AT403704B (en) | 1998-05-25 |
ATA178894A (en) | 1997-09-15 |
CA2132165A1 (en) | 1995-03-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR970706173A (en) | Method of Packaging a Medical Article | |
NO178653C (en) | Process for the preparation of liposomes and / or biological cells, which include additives | |
MY111537A (en) | A combined desizing and bleaching process. | |
ES2112983T3 (en) | METHOD OF STORING FOOD USING NOBLE GASES. | |
GB2312608A (en) | A method of packing a food and a package containing the food | |
ES2050566A1 (en) | Method and equipment for processing fibrous material with gaseous reagent | |
ATE123383T1 (en) | METHOD FOR BLANCHING PLANT MATERIAL IN A DRY MILIEU. | |
NO864983L (en) | PROCEDURE FOR THE WHEATING AND DELIGNIFICATION OF PRODUCTS CONTAINING CHEMICAL MASS. | |
SE9201441D0 (en) | A METHOD FOR THE USE OF ENZYMES IN PROCESSING AND BLEACHING OF PAPER PULP, AND APPARATUS FOR USE THEREOF | |
SE9403155D0 (en) | Method for ozone bleaching of wood pulp | |
JPS5638187A (en) | Treatment of organic waste water | |
PT988392E (en) | BIOGAS EXTRACTION PROCESS AND DEVICE | |
DE69405006T2 (en) | METHOD FOR HYDROGEN PEROXYPE BLEACHING FROM A HIGH-EXCHANGE CELL | |
SE8904404D0 (en) | SAVE TO PLEASE MASS | |
SE9503694D0 (en) | Bleaching of pulp | |
ES2000831A6 (en) | Process for the delignification of cellulosic materials. | |
NO961817L (en) | Chemical pulp bleaching process | |
ES2000385A6 (en) | Process for the delignification of cellulosic materials. | |
JPS5279563A (en) | Method of treating pectin-containing waste water | |
FI961975A (en) | Procedure for bleaching chemical pulp | |
NO984593L (en) | Method of Bleaching Chemical Pulp | |
GB1275349A (en) | Radiolytic treatment of organic-containing waste water in a pressurized oxygen atmosphere | |
JPS5478112A (en) | Soundboard for musical instruments | |
ES2090414T3 (en) | DETOXIFICATION OF VEGETABLE LIQUORS. | |
SE9500573D0 (en) | Bleaching pulp with peroxide at superatmospheric pressure and in multiple stages |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 9403155-6 |