EP0502852A1 - Displacement heating in continuous digesters. - Google Patents
Displacement heating in continuous digesters.Info
- Publication number
- EP0502852A1 EP0502852A1 EP90914988A EP90914988A EP0502852A1 EP 0502852 A1 EP0502852 A1 EP 0502852A1 EP 90914988 A EP90914988 A EP 90914988A EP 90914988 A EP90914988 A EP 90914988A EP 0502852 A1 EP0502852 A1 EP 0502852A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquor
- chips
- chamber
- high temperature
- temperature
- 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.)
- Granted
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
- D21C7/00—Digesters
- D21C7/14—Means for circulating the lye
-
- 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)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Appareil et méthode pour traiter les copeaux de cellulose de bois au cours du lessivage afin de libérer la pulpe dans une solution caustique d'hydroxyde à haute pression et à température élevée. Pour ce faire, on introduit les copeaux préalablement conditionnés dans une première chambre (10), dans laquelle on fait circuler une liqueur noire à faible température pour les préchauffer. Simultanément, on introduit en continu les copeaux au travers de la première chambre (10) dans une deuxième chambre (21) à température élevée et à haute pression. On fait circuler une liqueur noire à haute température dans les copeaux de la deuxième chambre (21) pour les amener à la température de cuisson. On introduit les copeaux et une lessive fraîche dans un lessiveur (33) qui les lessive en un temps prédéterminé, puis on élimine la pulpe lessivée et on l'introduit dans un cylindre laveur avec la liqueur noire utilisée pour la première chambre (10), et on chauffe la lessive fraîche grâce à un échangeur thermique au moyen de la liqueur noire à haute température.Apparatus and method for treating wood cellulose chips during leaching to release the pulp into a caustic hydroxide solution at high pressure and high temperature. To do this, the previously conditioned chips are introduced into a first chamber (10), in which a black liquor is circulated at low temperature to preheat them. Simultaneously, the chips are continuously introduced through the first chamber (10) into a second chamber (21) at high temperature and high pressure. A high temperature black liquor is circulated through the chips of the second chamber (21) to bring them to the cooking temperature. The shavings and a fresh lye are introduced into a digester (33) which leaches them in a predetermined time, then the leached pulp is removed and it is introduced into a washing cylinder with the black liquor used for the first chamber (10), and the fresh lye is heated by means of a heat exchanger by means of the high temperature black liquor.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41392089A | 1989-09-28 | 1989-09-28 | |
US413920 | 1989-09-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0502852A1 true EP0502852A1 (en) | 1992-09-16 |
EP0502852B1 EP0502852B1 (en) | 1993-11-03 |
Family
ID=23639200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90914988A Expired - Lifetime EP0502852B1 (en) | 1989-09-28 | 1990-09-25 | Displacement heating in continuous digesters |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0502852B1 (en) |
JP (1) | JPH0674557B2 (en) |
KR (1) | KR0171423B1 (en) |
CN (1) | CN1021980C (en) |
CA (1) | CA2066181C (en) |
DE (1) | DE69004438T2 (en) |
ES (1) | ES2045948T3 (en) |
FI (1) | FI921373A (en) |
NO (1) | NO179016C (en) |
WO (1) | WO1991005103A2 (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0477059B1 (en) * | 1990-09-20 | 1995-07-12 | Kvaerner Pulping Technologies AB | Impregnation with black liquor prior to white liquor introduction |
US5302247A (en) * | 1992-11-02 | 1994-04-12 | Kamyr, Inc. | Top circulation line cooling for a modified cook digester |
CN1071997C (en) * | 1993-06-18 | 2001-10-03 | 叶隆清 | Plant growth accelerator and method for preparing same |
US5824187A (en) * | 1993-12-29 | 1998-10-20 | Kvaerner Pulping Ab | Method for the continuous cooking of pulp |
SE502039C2 (en) * | 1993-12-29 | 1995-07-24 | Kvaerner Pulping Tech | Methods and apparatus for continuous cooking of pulp |
US6248208B1 (en) | 1995-06-02 | 2001-06-19 | Andritz-Ahlstrom Inc. | Pretreatment of chips before cooking |
AT403301B (en) * | 1996-04-04 | 1998-01-26 | Impco Voest Alpine Pulp Tech | CONTINUOUS LIQUID MANAGEMENT |
US6159336A (en) * | 1997-08-07 | 2000-12-12 | Kvaerner Pulping Ab | Method and device for the continuous cooking of pulp |
SE0104272L (en) * | 2001-12-17 | 2002-11-12 | Kvaerner Pulping Tech | Process and arrangement for impregnating wood chips |
SE0200185L (en) * | 2002-01-24 | 2002-12-10 | Kvaerner Pulping Tech | Process for increasing the heating economy of the boiler system during continuous boiling |
SE527058C2 (en) * | 2004-02-09 | 2005-12-13 | Kvaerner Pulping Tech | Continuous cooking process with improved heat economy |
JP5894594B2 (en) * | 2010-07-07 | 2016-03-30 | ストラ エンソ オサケ ユキチュアユルキネンStora Enso Oyj | Method for producing precipitated lignin from black liquor |
CN101906730B (en) * | 2010-07-15 | 2013-01-23 | 轻工业杭州机电设计研究院 | Non-wood fiber continuous cooking method and device |
CN102154398A (en) * | 2010-12-28 | 2011-08-17 | 国润金华(北京)国际能源投资有限公司佛山高明分公司 | High-temperature and high-pressure cellulose-to-sugar process |
CN103597139B (en) * | 2011-03-25 | 2016-03-30 | S·L·凯斯瓦尼 | For extracting the method and system of black liquor from transverse tube type continuous steamer |
CN102154874B (en) * | 2011-04-29 | 2012-11-21 | 白福安 | Replacement cooking pulping method |
CN102797189A (en) * | 2012-08-11 | 2012-11-28 | 李肥生 | Two-section self-heating helical-structure boiling separator |
US9644317B2 (en) * | 2014-11-26 | 2017-05-09 | International Paper Company | Continuous digester and feeding system |
FR3039567A1 (en) * | 2015-07-31 | 2017-02-03 | Commissariat Energie Atomique | DEVICE AND PROCESS FOR TREATING BLACK LIQUOR FROM THE PREPARATION OF PAPER PULP BY HYDROTHERMAL LIQUEFACTION |
CN108385430A (en) * | 2016-12-20 | 2018-08-10 | 常州爱上学教育科技有限公司 | Slurry made of the higher wood of intensity, bamboo raw material |
KR102295018B1 (en) | 2019-09-11 | 2021-08-30 | 한병엽 | Automatic ordering device for packaging container |
KR102490233B1 (en) | 2020-11-24 | 2023-01-18 | 한병엽 | Pos apparatus, method for processing order information of pos apparatus, recording medium |
JP7118185B2 (en) * | 2021-01-20 | 2022-08-15 | 木村工機株式会社 | residential air conditioning system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI63610C (en) * | 1981-12-31 | 1983-07-11 | Ekono Oy | REQUIREMENTS FOR CONTAINER UPPSLUTNING AV FINFOERDELAT MATERIAL |
SE452482B (en) * | 1982-04-28 | 1987-11-30 | Sunds Defibrator | PROCEDURE FOR BATCH PREPARATION OF SULPHATE Pulp WITH HIGH DEGREE |
JPS6059189A (en) * | 1983-08-24 | 1985-04-05 | ベロイト コ−ポレ−ション | Multi-stage digestion of wood pulp |
FI71176C (en) * | 1983-11-30 | 1991-12-03 | Ekono Oy | Process for preparing cellulose with batch boiling |
-
1990
- 1990-09-25 CA CA002066181A patent/CA2066181C/en not_active Expired - Fee Related
- 1990-09-25 WO PCT/US1990/005443 patent/WO1991005103A2/en active IP Right Grant
- 1990-09-25 EP EP90914988A patent/EP0502852B1/en not_active Expired - Lifetime
- 1990-09-25 KR KR1019920700696A patent/KR0171423B1/en not_active IP Right Cessation
- 1990-09-25 DE DE90914988T patent/DE69004438T2/en not_active Expired - Fee Related
- 1990-09-25 ES ES90914988T patent/ES2045948T3/en not_active Expired - Lifetime
- 1990-09-25 JP JP2514062A patent/JPH0674557B2/en not_active Expired - Lifetime
- 1990-09-28 CN CN90108125A patent/CN1021980C/en not_active Expired - Fee Related
-
1992
- 1992-02-18 NO NO920630A patent/NO179016C/en unknown
- 1992-03-27 FI FI921373A patent/FI921373A/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9105103A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE69004438D1 (en) | 1993-12-09 |
JPH05503739A (en) | 1993-06-17 |
NO920630D0 (en) | 1992-02-18 |
KR0171423B1 (en) | 1999-05-01 |
JPH0674557B2 (en) | 1994-09-21 |
CA2066181A1 (en) | 1991-03-29 |
WO1991005103A3 (en) | 1991-05-16 |
NO179016C (en) | 1996-07-17 |
EP0502852B1 (en) | 1993-11-03 |
NO179016B (en) | 1996-04-09 |
DE69004438T2 (en) | 1994-05-11 |
CN1021980C (en) | 1993-09-01 |
CA2066181C (en) | 1995-09-26 |
CN1050579A (en) | 1991-04-10 |
KR920703920A (en) | 1992-12-18 |
FI921373A0 (en) | 1992-03-27 |
FI921373A (en) | 1992-03-27 |
WO1991005103A2 (en) | 1991-04-18 |
ES2045948T3 (en) | 1994-01-16 |
NO920630L (en) | 1992-02-18 |
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