ES2726053T3 - Métodos para reducir el contenido de metales de la pulpa blanqueada mientras se reduce el coste del blanqueamiento en un proceso de pulpa químico - Google Patents
Métodos para reducir el contenido de metales de la pulpa blanqueada mientras se reduce el coste del blanqueamiento en un proceso de pulpa químico Download PDFInfo
- Publication number
- ES2726053T3 ES2726053T3 ES11766310T ES11766310T ES2726053T3 ES 2726053 T3 ES2726053 T3 ES 2726053T3 ES 11766310 T ES11766310 T ES 11766310T ES 11766310 T ES11766310 T ES 11766310T ES 2726053 T3 ES2726053 T3 ES 2726053T3
- Authority
- ES
- Spain
- Prior art keywords
- pulp
- bleaching
- oxidant
- urea
- amount
- 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.)
- Active
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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/11—Halides
-
- 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
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/751,143 US20110240239A1 (en) | 2010-03-31 | 2010-03-31 | Methods to Reduce Metals Content of Bleached Pulp While Reducing Bleaching Cost in a Chemical Pulping Process |
PCT/US2011/025845 WO2011126613A2 (en) | 2010-03-31 | 2011-02-23 | Methods to reduce metals content of bleached pulp while reducing bleaching cost in a chemical pulping process |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2726053T3 true ES2726053T3 (es) | 2019-10-01 |
Family
ID=44708259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES11766310T Active ES2726053T3 (es) | 2010-03-31 | 2011-02-23 | Métodos para reducir el contenido de metales de la pulpa blanqueada mientras se reduce el coste del blanqueamiento en un proceso de pulpa químico |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110240239A1 (pt) |
EP (1) | EP2553165B1 (pt) |
BR (1) | BR112012025085B1 (pt) |
CA (1) | CA2795150A1 (pt) |
ES (1) | ES2726053T3 (pt) |
PT (1) | PT2553165T (pt) |
WO (1) | WO2011126613A2 (pt) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5234466A (en) * | 1992-07-24 | 1993-08-10 | Peach State Labs, Inc. | Lowering of the pH of textile processing solutions by adding urea sulfate as a pH adjusting agent |
US7029553B1 (en) | 1992-07-24 | 2006-04-18 | Peach State Labs, Inc. | Urea sulfate and urea hydrochloride in paper and pulp processing |
US5672279A (en) | 1992-07-24 | 1997-09-30 | Peach State Labs, Inc. | Method for using urea hydrochloride |
CA2398329A1 (en) * | 2001-08-20 | 2003-02-20 | Hercules Incorporated | Process for purifying sand |
WO2005045127A1 (en) * | 2003-11-07 | 2005-05-19 | Commonwealth Scientific And Industrial Research Organisation | A method for bleaching lignocellulosic materials |
-
2010
- 2010-03-31 US US12/751,143 patent/US20110240239A1/en not_active Abandoned
-
2011
- 2011-02-23 ES ES11766310T patent/ES2726053T3/es active Active
- 2011-02-23 PT PT11766310T patent/PT2553165T/pt unknown
- 2011-02-23 CA CA2795150A patent/CA2795150A1/en not_active Abandoned
- 2011-02-23 WO PCT/US2011/025845 patent/WO2011126613A2/en active Application Filing
- 2011-02-23 BR BR112012025085-0A patent/BR112012025085B1/pt active IP Right Grant
- 2011-02-23 EP EP11766310.4A patent/EP2553165B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
CA2795150A1 (en) | 2011-10-13 |
EP2553165A2 (en) | 2013-02-06 |
EP2553165A4 (en) | 2016-08-24 |
EP2553165B1 (en) | 2019-03-20 |
WO2011126613A3 (en) | 2012-01-12 |
WO2011126613A2 (en) | 2011-10-13 |
US20110240239A1 (en) | 2011-10-06 |
BR112012025085B1 (pt) | 2020-03-17 |
BR112012025085A2 (pt) | 2016-06-21 |
PT2553165T (pt) | 2019-05-30 |
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