AR001152A1 - Un proceso para blanquear materiales fibrosos lignocelulósicos celulósicos y polímericos sintéticos utilizando peróxidos alcalinos y un recipiente para el uso de dicho proceso - Google Patents

Un proceso para blanquear materiales fibrosos lignocelulósicos celulósicos y polímericos sintéticos utilizando peróxidos alcalinos y un recipiente para el uso de dicho proceso

Info

Publication number
AR001152A1
AR001152A1 AR33563796A AR33563796A AR001152A1 AR 001152 A1 AR001152 A1 AR 001152A1 AR 33563796 A AR33563796 A AR 33563796A AR 33563796 A AR33563796 A AR 33563796A AR 001152 A1 AR001152 A1 AR 001152A1
Authority
AR
Argentina
Prior art keywords
container
bleaching
contact surface
polymeric materials
synthetic polymeric
Prior art date
Application number
AR33563796A
Other languages
English (en)
Original Assignee
Ingersoll Rand Co
Pulp Paper Res Inst
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ingersoll Rand Co, Pulp Paper Res Inst filed Critical Ingersoll Rand Co
Publication of AR001152A1 publication Critical patent/AR001152A1/es

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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/06—Spark arresters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2270/00—Mixing air with exhaust gases
    • F01N2270/02—Mixing air with exhaust gases for cooling exhaust gases or the apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2270/00—Mixing air with exhaust gases
    • F01N2270/08—Mixing air with exhaust gases for evacuation of exhaust gases, e.g. in tail-pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/06—Tubes being formed by assembly of stamped or otherwise deformed sheet-metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/08—Two or more expansion chambers in series separated by apertured walls only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/06—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for extinguishing sparks

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

Se revela un proceso que conduce a una substancial mejora en la eficiencia del blanqueo de materiales lignocelulósicos y similares con peróxido dehidrógeno. Esto se ha obtenido reduciendo la proporción y extensión de la descomposición no productiva del peróxido. Se muestra aquí que una substancialparte de la descomposición del peróxido, que se produce a raiz de la exposición al equipo de proceso, es disminuida substancialmente usando unametalurgia apropiada. Se describe un recipiente de blanqueo que tiene por lo menos una superficie en contacto, es decir, una superficie de contacto, con lapulpa procesada. El recipiente, o al menos la superficie de contacto es construido de zirconio, niobio, hafnio, tantalio o aleaciones de los mismos. Unproceso de blanqueo que usa tal recipiente elimina la necesidad de silicato y otros agentes secuestrantes en la solución de blanqueo.
AR33563796A 1994-07-11 1996-03-05 Un proceso para blanquear materiales fibrosos lignocelulósicos celulósicos y polímericos sintéticos utilizando peróxidos alcalinos y un recipiente para el uso de dicho proceso AR001152A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27353994A 1994-07-11 1994-07-11
US40234295A 1995-03-10 1995-03-10

Publications (1)

Publication Number Publication Date
AR001152A1 true AR001152A1 (es) 1997-09-24

Family

ID=26956276

Family Applications (2)

Application Number Title Priority Date Filing Date
AR33563795A AR000152A1 (es) 1994-07-11 1995-11-17 Un proceso para blanquear materiales fibrosos lignocelulosicos, celulosicos y polimericos sinteticosutilizando peroxidos alcalinos, y un recipiente para el uso de dicho proceso.
AR33563796A AR001152A1 (es) 1994-07-11 1996-03-05 Un proceso para blanquear materiales fibrosos lignocelulósicos celulósicos y polímericos sintéticos utilizando peróxidos alcalinos y un recipiente para el uso de dicho proceso

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AR33563795A AR000152A1 (es) 1994-07-11 1995-11-17 Un proceso para blanquear materiales fibrosos lignocelulosicos, celulosicos y polimericos sinteticosutilizando peroxidos alcalinos, y un recipiente para el uso de dicho proceso.

Country Status (9)

Country Link
EP (1) EP0797702A1 (es)
JP (1) JP2926518B2 (es)
AR (2) AR000152A1 (es)
BR (1) BR9508387A (es)
CA (1) CA2194882A1 (es)
FI (1) FI970105A (es)
RU (1) RU2152467C1 (es)
WO (1) WO1996001921A1 (es)
ZA (1) ZA956507B (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2910027B1 (fr) * 2006-12-13 2009-11-06 Itt Mfg Enterprises Inc Procede de blanchiment des pates papeteries chimiques par traitement final a l'ozone a haute temperature
CL2009000939A1 (es) 2008-04-30 2010-10-01 Evonik Degussa Gmbh Proceso para recuperar molibdato o tungstato desde una solucion acuosa que comprende a) contactar la solucion con un material portador inorganico cationizado e insoluble en agua, b) separar el material portador de molibdato o tungstato, c) contactarlo con una solucion acuosa con un ph entre 6 a 14 y d) separar el material saturado.
DE102010001001A1 (de) * 2010-01-19 2011-07-21 Evonik Degussa GmbH, 45128 Verfahren zur Delignifizierung und Bleiche von Zellstoff
PT3066257T (pt) 2013-11-06 2019-06-04 Evonik Degussa Gmbh Método para a deslignificação e branqueamento de pasta de papel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006056A3 (fr) * 1992-07-06 1994-05-03 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
SE9301960L (sv) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Blekning av kemisk massa med peroxid vid övertryck

Also Published As

Publication number Publication date
AR000152A1 (es) 1997-05-21
CA2194882A1 (en) 1996-01-25
RU2152467C1 (ru) 2000-07-10
EP0797702A1 (en) 1997-10-01
JP2926518B2 (ja) 1999-07-28
FI970105A (fi) 1997-03-07
WO1996001921A1 (en) 1996-01-25
FI970105A0 (fi) 1997-01-10
BR9508387A (pt) 1997-11-25
ZA956507B (en) 1996-05-29
JPH09508946A (ja) 1997-09-09

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