SE9604324D0 - Method and apparatus for heating masses - Google Patents
Method and apparatus for heating massesInfo
- Publication number
- SE9604324D0 SE9604324D0 SE9604324A SE9604324A SE9604324D0 SE 9604324 D0 SE9604324 D0 SE 9604324D0 SE 9604324 A SE9604324 A SE 9604324A SE 9604324 A SE9604324 A SE 9604324A SE 9604324 D0 SE9604324 D0 SE 9604324D0
- Authority
- SE
- Sweden
- Prior art keywords
- pulp
- pressure
- steam
- blender
- pressurising
- 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
-
- 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
- D21C9/001—Modification of pulp properties
- D21C9/007—Modification of pulp properties by mechanical or physical means
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
A method for heating pulp comprises pressurising the pulp to a first pressure and then introducing low pressure steam into the pulp downstream of this pressurising region, at a pressure greater than that of the pulp. A pressure-increasing blender is used to homogeneously mix the steam into the pulp and/or to even out the temperature of the pulp after the steam has been introduced into the pumped flow of pulp. The pressure generated by the blender is used to drive the pulp to the next process step.The process equipment used for this method is also claimed, comprising a pulp transport device (12) located in a pulp conveyor line (14), a low pressure steam supply device (16) and a blender (18).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9604324A SE516348C2 (en) | 1996-11-25 | 1996-11-25 | Pulp heating using low pressure steam |
PCT/FI1997/000623 WO1999019560A1 (en) | 1996-11-25 | 1997-10-14 | Method and apparatus for heating pulps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9604324A SE516348C2 (en) | 1996-11-25 | 1996-11-25 | Pulp heating using low pressure steam |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9604324D0 true SE9604324D0 (en) | 1996-11-25 |
SE9604324L SE9604324L (en) | 1998-05-26 |
SE516348C2 SE516348C2 (en) | 2001-12-17 |
Family
ID=20404741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9604324A SE516348C2 (en) | 1996-11-25 | 1996-11-25 | Pulp heating using low pressure steam |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE516348C2 (en) |
-
1996
- 1996-11-25 SE SE9604324A patent/SE516348C2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE9604324L (en) | 1998-05-26 |
SE516348C2 (en) | 2001-12-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |