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BR9508387A - High efficiency vessels for bleaching fibrous cellulosic and synthetic polymeric lignocellulosic materials - Google Patents

High efficiency vessels for bleaching fibrous cellulosic and synthetic polymeric lignocellulosic materials

Info

Publication number
BR9508387A
BR9508387A BR9508387A BR9508387A BR9508387A BR 9508387 A BR9508387 A BR 9508387A BR 9508387 A BR9508387 A BR 9508387A BR 9508387 A BR9508387 A BR 9508387A BR 9508387 A BR9508387 A BR 9508387A
Authority
BR
Brazil
Prior art keywords
vessels
high efficiency
synthetic polymeric
lignocellulosic materials
fibrous cellulosic
Prior art date
Application number
BR9508387A
Other languages
Portuguese (pt)
Inventor
Brian P Roy
Barbara Van Lierop
Richard M Berry
Donald E Bardsley
Original Assignee
Beloit Technologies Inc
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 Beloit Technologies Inc filed Critical Beloit Technologies Inc
Publication of BR9508387A publication Critical patent/BR9508387A/en

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 exhaust 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 exhaust 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)
BR9508387A 1994-07-11 1995-06-29 High efficiency vessels for bleaching fibrous cellulosic and synthetic polymeric lignocellulosic materials BR9508387A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US27353994A 1994-07-11 1994-07-11
US40234295A 1995-03-10 1995-03-10
PCT/US1995/008141 WO1996001921A1 (en) 1994-07-11 1995-06-29 High efficiency vessels for bleaching lignocellulosic, cellulosic and synthetic polymeric fibrous materials

Publications (1)

Publication Number Publication Date
BR9508387A true BR9508387A (en) 1997-11-25

Family

ID=26956276

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9508387A BR9508387A (en) 1994-07-11 1995-06-29 High efficiency vessels for bleaching fibrous cellulosic and synthetic polymeric lignocellulosic materials

Country Status (9)

Country Link
EP (1) EP0797702A1 (en)
JP (1) JP2926518B2 (en)
AR (2) AR000152A1 (en)
BR (1) BR9508387A (en)
CA (1) CA2194882A1 (en)
FI (1) FI970105A7 (en)
RU (1) RU2152467C1 (en)
WO (1) WO1996001921A1 (en)
ZA (1) ZA956507B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI123102B (en) * 2006-03-31 2012-11-15 Laennen Tutkimus Western Res Inc Oy Bleaching procedure for chemical pulp
FI122626B (en) * 2006-03-31 2012-04-30 Laennen Tutkimus Western Res Inc Oy Chemical pulp bleaching process
FR2910027B1 (en) * 2006-12-13 2009-11-06 Itt Mfg Enterprises Inc PROCESS FOR WHITENING CHEMICAL STRIPPING PASTES BY FINAL OZONE TREATMENT AT HIGH TEMPERATURE
CL2009000939A1 (en) 2008-04-30 2010-10-01 Evonik Degussa Gmbh Process to recover molybdate or tungstate from an aqueous solution that comprises a) contacting the solution with a cationized and water-insoluble inorganic carrier material, b) separating the carrier material from molybdate or tungstate, c) contacting it with an aqueous solution with a pH between 6 to 14 and d) separate the saturated material.
DE102010001001A1 (en) 2010-01-19 2011-07-21 Evonik Degussa GmbH, 45128 Process for delignification and bleaching of pulp
RU2419699C1 (en) * 2010-06-22 2011-05-27 Феликс Фердинандович Аухадеев Device for continuous bleaching cellulose containing semi-finished products and its operational procedure
KR20160085281A (en) 2013-11-06 2016-07-15 에보닉 데구사 게엠베하 Method for delignifying and bleaching pulp

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI45574C (en) * 1970-05-11 1972-07-10 Kymin Oy Kymmene Ab Process for bleaching cellulosic materials.
SE452346C (en) * 1982-12-17 1990-03-26 Sunds Defibrator PROCEDURES FOR PEROXID WHITING OF LIGNOCELLULOSALLY MATERIAL IN TWO STEPS
SE8700569D0 (en) * 1987-02-12 1987-02-12 Josef Kubat AN IMPROVED PEROXIDE BLEACHING METHOD
WO1992012289A1 (en) * 1991-01-03 1992-07-23 Union Camp Patent Holding, Inc. Chlorine-free process for bleaching lignocellulosic pulp
BE1006056A3 (en) * 1992-07-06 1994-05-03 Solvay Interox Method of laundering of chemical pulp.
RU2019613C1 (en) * 1992-08-18 1994-09-15 Валерий Анатольевич Демин Process for whitening deciduous sulfate cellulose
RU2019612C1 (en) * 1992-08-18 1994-09-15 Валерий Анатольевич Демин Process for whitening coniferous sulfate cellulose
SE9301960L (en) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Bleaching of chemical pulp with peroxide at overpressure

Also Published As

Publication number Publication date
AR001152A1 (en) 1997-09-24
AR000152A1 (en) 1997-05-21
FI970105A0 (en) 1997-01-10
JPH09508946A (en) 1997-09-09
RU2152467C1 (en) 2000-07-10
EP0797702A1 (en) 1997-10-01
CA2194882A1 (en) 1996-01-25
FI970105A7 (en) 1997-03-07
JP2926518B2 (en) 1999-07-28
WO1996001921A1 (en) 1996-01-25
ZA956507B (en) 1996-05-29

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Legal Events

Date Code Title Description
FC Decision: refusal