FR2489516A1 - Procede de reglage de produits chimiques au cours du traitement par un gaz de substances liquides ou en suspension, notamment de pates cellulosiques - Google Patents

Procede de reglage de produits chimiques au cours du traitement par un gaz de substances liquides ou en suspension, notamment de pates cellulosiques Download PDF

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Publication number
FR2489516A1
FR2489516A1 FR8112195A FR8112195A FR2489516A1 FR 2489516 A1 FR2489516 A1 FR 2489516A1 FR 8112195 A FR8112195 A FR 8112195A FR 8112195 A FR8112195 A FR 8112195A FR 2489516 A1 FR2489516 A1 FR 2489516A1
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FR
France
Prior art keywords
gas
substance
container
measured
density
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
Application number
FR8112195A
Other languages
English (en)
French (fr)
Other versions
FR2489516B1 (cg-RX-API-DMAC10.html
Inventor
Ake Backlund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Fiber Karlstad AB
Original Assignee
Kamyr AB
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 Kamyr AB filed Critical Kamyr AB
Publication of FR2489516A1 publication Critical patent/FR2489516A1/fr
Application granted granted Critical
Publication of FR2489516B1 publication Critical patent/FR2489516B1/fr
Granted legal-status Critical Current

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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
    • D21C9/1068—Bleaching ; Apparatus therefor with O2
    • 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
    • D21C9/1052—Controlling the process
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/34—Paper
    • G01N33/343—Paper pulp
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Wood Science & Technology (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Paper (AREA)
FR8112195A 1980-08-26 1981-06-22 Procede de reglage de produits chimiques au cours du traitement par un gaz de substances liquides ou en suspension, notamment de pates cellulosiques Granted FR2489516A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8005959A SE421019B (sv) 1980-08-26 1980-08-26 Forfarande for kemikaliereglering vid behandling av en substans, speciellt massa, med gas

Publications (2)

Publication Number Publication Date
FR2489516A1 true FR2489516A1 (fr) 1982-03-05
FR2489516B1 FR2489516B1 (cg-RX-API-DMAC10.html) 1983-02-11

Family

ID=20341598

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8112195A Granted FR2489516A1 (fr) 1980-08-26 1981-06-22 Procede de reglage de produits chimiques au cours du traitement par un gaz de substances liquides ou en suspension, notamment de pates cellulosiques

Country Status (10)

Country Link
US (1) US4419184A (cg-RX-API-DMAC10.html)
JP (1) JPS5771486A (cg-RX-API-DMAC10.html)
AT (1) AT375977B (cg-RX-API-DMAC10.html)
BR (1) BR8104972A (cg-RX-API-DMAC10.html)
CA (1) CA1170430A (cg-RX-API-DMAC10.html)
DE (1) DE3129010A1 (cg-RX-API-DMAC10.html)
FI (1) FI68870C (cg-RX-API-DMAC10.html)
FR (1) FR2489516A1 (cg-RX-API-DMAC10.html)
NO (1) NO156535C (cg-RX-API-DMAC10.html)
SE (1) SE421019B (cg-RX-API-DMAC10.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572742A1 (fr) * 1984-11-08 1986-05-09 Rauma Repola Oy Procede pour le controle d'un processus de blanchiment a l'oxygene de la cellulose

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946555A (en) * 1989-01-19 1990-08-07 Canadian Liquid Air Ltd./Air Liquide Canada Apparatus and method for measuring vent gas flow rates and parameters in pulp and paper processing
US5883292A (en) * 1996-01-17 1999-03-16 Twenty-First Century Research Corporation Reaction control by regulating internal condensation inside a reactor
US6288270B1 (en) 1996-06-24 2001-09-11 Rpc Inc. Methods for controlling the reaction rate of a hydrocarbon to an acid by making phase-related adjustments
US6143927A (en) 1996-06-24 2000-11-07 Rpc Inc. Methods for removing catalyst after oxidation of hydrocarbons
US6337051B1 (en) 1996-06-24 2002-01-08 Rpc Inc. Device for detecting formation of a second liquid phase
US5922908A (en) * 1996-06-24 1999-07-13 Twenty-First Century Research Corporation Methods for preparing dibasic acids
US6039902A (en) * 1996-06-24 2000-03-21 Rpc Inc. Methods of recycling catalyst in oxidations of hydrocarbons
US5801273A (en) * 1996-08-21 1998-09-01 Twenty-First Century Research Corporation Methods and devices for controlling the reaction rate of a hydrocarbon to an intermediate oxidation product by pressure drop adjustments
US20010053864A1 (en) * 1996-08-21 2001-12-20 Decoster David C. Devices for controlling the reaction rate and/or reactivity of hydrocarbon to an intermediate oxidation product by adjusting the oxidant consumption rate
WO1998007677A1 (en) * 1996-08-21 1998-02-26 Twenty-First Century Research Corporation Methods and devices for controlling the reaction by adjusting the oxidant consumption rate
US6103933A (en) * 1996-11-07 2000-08-15 Rpc Inc. Methods for controlling the oxidation rate of a hydrocarbon by adjusting the ratio of the hydrocarbon to a rate-modulator
US5817868A (en) * 1996-11-12 1998-10-06 Twenty-First Century Research Corporation Method and devices for controlling the oxidation of a hydrocarbon to an acid by regulating temperature/conversion relationship in multi-stage arrangements
SE510740C2 (sv) * 1996-11-26 1999-06-21 Sunds Defibrator Ind Ab Styrning av syrgasdelignifiering
US5824819A (en) * 1996-12-18 1998-10-20 Twenty-First Century Research Corporation Methods of preparing an intermediate oxidation product from a hydrocarbon by utilizing an activated initiator
US6037491A (en) * 1997-07-25 2000-03-14 Rpc Inc. Methods and devices for controlling hydrocarbon oxidations to respective acids by adjusting the solvent to hydrocarbon ratio
US5929277A (en) 1997-09-19 1999-07-27 Twenty-First Century Research Corporation Methods of removing acetic acid from cyclohexane in the production of adipic acid
US5908589A (en) * 1997-12-08 1999-06-01 Twenty-First Century Research Corporation Methods for separating catalyst from oxidation mixtures containing dibasic acids
BR9907687A (pt) 1998-02-09 2000-11-14 Rpc Inc Processo para o tratamento de catalisador cobalto em misturas de oxidação de hidrocarbonetos a ácidos dibásicos
JP2002503715A (ja) * 1998-02-19 2002-02-05 アールピーシー インコーポレイテッド 酸化混合物から触媒を分離する方法およびデバイス
US6433221B1 (en) 1998-07-02 2002-08-13 Rpc Inc. Methods of separating catalyst in solution from a reaction mixture produced by oxidation of cyclohexane to adipic acid
US6340420B1 (en) 1998-07-06 2002-01-22 Rpc Inc. Methods of treating the oxidation mixture of hydrocarbons to respective dibasic acids
WO2000063147A1 (en) 1999-04-20 2000-10-26 Rpc Inc. Methods of replacing water and cyclohexanone with acetic acid in aqueous solutions of catalyst
SE526000C2 (sv) * 2003-11-26 2005-06-14 Kvaerner Pulping Tech Metod och system för att styra tillsättning av syrgas och alkali vid syrgasdelignifiering
US12280518B2 (en) 2021-09-30 2025-04-22 Alliance For Sustainable Energy, Llc Wood template-supported phase change composite for thermal energy applications

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745065A (en) * 1971-09-07 1973-07-10 Cons Paper Inc Control of chlorine dioxide bleaching
FR2212461A1 (en) * 1973-01-03 1974-07-26 Kamyr Inc Paper pulp prodn from wood fibre - in which pulp density, liquid fraction density, and pulp flow rate are monitored

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832276A (en) * 1973-03-07 1974-08-27 Int Paper Co Delignification and bleaching of a cellulose pulp slurry with oxygen
US4093511A (en) * 1973-08-27 1978-06-06 Kamyr Aktiebolag Apparatus for oxygen bleaching of pulp including recirculation of exhaust gases
US3951733A (en) * 1974-11-06 1976-04-20 International Paper Company Delignification and bleaching of wood pulp with oxygen
SE415580C (sv) * 1977-05-11 1984-10-15 Mo Och Domsjoe Ab Forfarande for reglering av tillforseln av reaktionskemikalier vid delignifiering av cellulosamaterial
SU702087A1 (ru) * 1977-07-11 1979-12-05 Ленинградский Ордена Трудового Красного Знамени Технологический Институт Им. Ленсовета Устройство дл измерени степени делигнификации целлюлозы в варочных котлах периодического действи
US4220498A (en) * 1978-12-14 1980-09-02 Kamyr, Inc. Oxygen reactor systems pulp reject treatment
US4259150A (en) * 1978-12-18 1981-03-31 Kamyr Inc. Plural stage mixing and thickening oxygen bleaching process
US4239590A (en) * 1979-01-11 1980-12-16 Kamyr, Inc. Method of maintaining uniformity of fibrous material fed to a continuous digester

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745065A (en) * 1971-09-07 1973-07-10 Cons Paper Inc Control of chlorine dioxide bleaching
FR2212461A1 (en) * 1973-01-03 1974-07-26 Kamyr Inc Paper pulp prodn from wood fibre - in which pulp density, liquid fraction density, and pulp flow rate are monitored

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572742A1 (fr) * 1984-11-08 1986-05-09 Rauma Repola Oy Procede pour le controle d'un processus de blanchiment a l'oxygene de la cellulose

Also Published As

Publication number Publication date
SE421019B (sv) 1981-11-16
FI68870B (fi) 1985-07-31
FR2489516B1 (cg-RX-API-DMAC10.html) 1983-02-11
US4419184A (en) 1983-12-06
JPS6325118B2 (cg-RX-API-DMAC10.html) 1988-05-24
NO156535C (no) 1987-10-07
NO156535B (no) 1987-06-29
NO811871L (no) 1982-03-01
FI68870C (fi) 1985-11-11
AT375977B (de) 1984-09-25
FI811942L (fi) 1982-02-27
BR8104972A (pt) 1982-04-20
CA1170430A (en) 1984-07-10
ATA362381A (de) 1984-02-15
DE3129010A1 (de) 1982-05-13
JPS5771486A (en) 1982-05-04

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