JPH01148889A - パルプ製造操作においてスケール形成を減少させるための方法及び装置 - Google Patents
パルプ製造操作においてスケール形成を減少させるための方法及び装置Info
- Publication number
- JPH01148889A JPH01148889A JP63265934A JP26593488A JPH01148889A JP H01148889 A JPH01148889 A JP H01148889A JP 63265934 A JP63265934 A JP 63265934A JP 26593488 A JP26593488 A JP 26593488A JP H01148889 A JPH01148889 A JP H01148889A
- Authority
- JP
- Japan
- Prior art keywords
- scale
- cooking liquor
- digester
- heat exchanger
- forming components
- 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
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 13
- 230000029087 digestion Effects 0.000 claims abstract description 3
- 238000010411 cooking Methods 0.000 claims description 102
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 238000012545 processing Methods 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 5
- 238000005470 impregnation Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 16
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 8
- 238000004537 pulping Methods 0.000 abstract description 6
- 239000000470 constituent Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 17
- 229910052791 calcium Inorganic materials 0.000 description 16
- 239000011575 calcium Substances 0.000 description 16
- 239000002253 acid Substances 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000002779 inactivation Effects 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- KHIWWQKSHDUIBK-UHFFFAOYSA-N periodic acid Chemical compound OI(=O)(=O)=O KHIWWQKSHDUIBK-UHFFFAOYSA-N 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/226—Use of compounds avoiding scale formation
-
- 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
- D21C7/00—Digesters
Landscapes
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US112,081 | 1980-01-14 | ||
| US11208187A | 1987-10-26 | 1987-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01148889A true JPH01148889A (ja) | 1989-06-12 |
Family
ID=22342018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63265934A Pending JPH01148889A (ja) | 1987-10-26 | 1988-10-21 | パルプ製造操作においてスケール形成を減少させるための方法及び装置 |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0313730A1 (no) |
| JP (1) | JPH01148889A (no) |
| BR (1) | BR8805152A (no) |
| CA (1) | CA1299322C (no) |
| FI (1) | FI883513A (no) |
| NO (1) | NO883329L (no) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002350567A (ja) * | 2001-05-29 | 2002-12-04 | Citizen Watch Co Ltd | 電子時計 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI972954A (fi) * | 1997-07-11 | 1999-01-12 | Sunds Defibrator Pori Oy | Menetelmä sulfaattimassan valmistuksessa syntyvän jätelipeän käsittelemiseksi |
| FI981803A (fi) * | 1998-08-21 | 2000-02-22 | Ahlstrom Machinery Oy | Menetelmä saostumien muodostumisen estämiseksi |
| FI110327B (fi) * | 1999-10-04 | 2002-12-31 | Metso Chemical Pulping Oy | Menetelmä sellumassan valmistamiseksi |
| SE520956C2 (sv) * | 2001-12-05 | 2003-09-16 | Kvaerner Pulping Tech | Kontinuerlig kokning med extra uppehållstid för avdragen vätska utanför kokaren |
| US7241363B2 (en) | 2004-06-26 | 2007-07-10 | International Paper Company | Methods to decrease scaling in digester systems |
| WO2013036190A1 (en) | 2011-09-05 | 2013-03-14 | Stora Enso Oyj | Process for treating hardwood black liquor and hardwood black liquor treated according to the process |
| US8986504B1 (en) | 2013-10-25 | 2015-03-24 | International Paper Company | Digester apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1945205A (en) * | 1929-11-15 | 1934-01-30 | Chemipulp Process Inc | Paper manufacture |
| US2008839A (en) * | 1932-09-15 | 1935-07-23 | Samson Torsten | Method and means for cleaning sulphite cellulose preheaters |
| SE8502807D0 (sv) * | 1985-06-06 | 1985-06-06 | Ahlstroem Foeretagen | Sett och apparatur for att deaktivera avlutar |
-
1988
- 1988-02-12 CA CA000558796A patent/CA1299322C/en not_active Expired - Fee Related
- 1988-07-15 EP EP88111367A patent/EP0313730A1/en not_active Withdrawn
- 1988-07-26 FI FI883513A patent/FI883513A/fi not_active Application Discontinuation
- 1988-07-27 NO NO88883329A patent/NO883329L/no unknown
- 1988-10-06 BR BR8805152A patent/BR8805152A/pt not_active Application Discontinuation
- 1988-10-21 JP JP63265934A patent/JPH01148889A/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002350567A (ja) * | 2001-05-29 | 2002-12-04 | Citizen Watch Co Ltd | 電子時計 |
Also Published As
| Publication number | Publication date |
|---|---|
| FI883513A (fi) | 1989-04-27 |
| NO883329L (no) | 1989-04-27 |
| CA1299322C (en) | 1992-04-28 |
| BR8805152A (pt) | 1989-05-16 |
| FI883513A0 (fi) | 1988-07-26 |
| EP0313730A1 (en) | 1989-05-03 |
| NO883329D0 (no) | 1988-07-27 |
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