AR017356A1 - CHEMICAL PAPER PASTE MANUFACTURE - Google Patents
CHEMICAL PAPER PASTE MANUFACTUREInfo
- Publication number
- AR017356A1 AR017356A1 ARP980105174A ARP980105174A AR017356A1 AR 017356 A1 AR017356 A1 AR 017356A1 AR P980105174 A ARP980105174 A AR P980105174A AR P980105174 A ARP980105174 A AR P980105174A AR 017356 A1 AR017356 A1 AR 017356A1
- Authority
- AR
- Argentina
- Prior art keywords
- treated
- chips
- zone
- current
- washing
- 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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- 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
- D21C3/24—Continuous processes
-
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
Fabricacion de pasta papelera química que comprende un procedimiento contínuo de coccion segun el cual se tratan, en una zona de impregnacion (a), virutasde madera por medio de una primera parte de un líquido alcalino, se tratan las virutas así obtenidas en una zona de coccion (b) que comprende, en cualquierorden, al menos un espacio co-corriente en el que el líquido y las virutas se desplazan de manera co-corriente y al menos un espacio contra-corriente en el quelas virutas y el líquido se desplazan de manera en contra-corriente, de forma que se transforme al menos una parte de las virutas en pasta papelera, se tratala pasta papelera así obtenida en una zona de lavado (c), se transfiere al medio obtenido en la zona de lavado a un depositode expansion (d), se somete elmedio que sale de la zona de expansion a uno o varios tratamientos de lavado (e), y se introduce al menos un agente quelante en la zona de lavado (c) y/o en eldeposito de expansion (d) y/o durante uno o varios tratamientos de lavado (e).Manufacture of chemical paper pulp comprising a continuous cooking procedure according to which, in an impregnation zone (a), wood chips are treated by means of a first part of an alkaline liquid, the chips thus obtained are treated in an area of cooking (b) comprising, in any order, at least one co-current space in which the liquid and chips move co-current and at least one counter-current space in which the chips and liquid move from in a counter-current manner, so that at least a part of the shavings in paper pulp is transformed, the pulp thus treated in a washing zone (c) is treated, it is transferred to the medium obtained in the washing zone to a deposit expansion (d), the medium leaving the expansion zone is subjected to one or more washing treatments (e), and at least one chelating agent is introduced into the washing zone (c) and / or the expansion tank ( d) and / or during one or more trat washings (e).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9700830A BE1011503A3 (en) | 1997-10-17 | 1997-10-17 | Manufacturing pulp chemicals. |
Publications (1)
Publication Number | Publication Date |
---|---|
AR017356A1 true AR017356A1 (en) | 2001-09-05 |
Family
ID=3890783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP980105174A AR017356A1 (en) | 1997-10-17 | 1998-10-16 | CHEMICAL PAPER PASTE MANUFACTURE |
Country Status (6)
Country | Link |
---|---|
AR (1) | AR017356A1 (en) |
AU (1) | AU1030999A (en) |
BE (1) | BE1011503A3 (en) |
ID (1) | ID21108A (en) |
WO (1) | WO1999020830A1 (en) |
ZA (1) | ZA989247B (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3448003A (en) * | 1966-01-03 | 1969-06-03 | Dow Chemical Co | On-stream cleaning of wood chip digesters using chelating agents |
CA2037717C (en) * | 1990-09-17 | 1996-03-05 | Bertil Stromberg | Extended kraft cooking with white liquor added to wash circulation |
WO1994010375A1 (en) * | 1992-10-26 | 1994-05-11 | Kamyr, Inc. | Displacement chelate treatment of pulp |
-
1997
- 1997-10-17 BE BE9700830A patent/BE1011503A3/en not_active IP Right Cessation
-
1998
- 1998-10-09 AU AU10309/99A patent/AU1030999A/en not_active Abandoned
- 1998-10-09 ZA ZA9809247A patent/ZA989247B/en unknown
- 1998-10-09 WO PCT/EP1998/006638 patent/WO1999020830A1/en active Application Filing
- 1998-10-16 AR ARP980105174A patent/AR017356A1/en unknown
- 1998-10-19 ID IDP981382A patent/ID21108A/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU1030999A (en) | 1999-05-10 |
BE1011503A3 (en) | 1999-10-05 |
ID21108A (en) | 1999-04-22 |
ZA989247B (en) | 2000-05-09 |
WO1999020830A1 (en) | 1999-04-29 |
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