AU6467186A - Pulp bleaching - Google Patents

Pulp bleaching

Info

Publication number
AU6467186A
AU6467186A AU64671/86A AU6467186A AU6467186A AU 6467186 A AU6467186 A AU 6467186A AU 64671/86 A AU64671/86 A AU 64671/86A AU 6467186 A AU6467186 A AU 6467186A AU 6467186 A AU6467186 A AU 6467186A
Authority
AU
Australia
Prior art keywords
pulp bleaching
bleaching
pulp
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
AU64671/86A
Other versions
AU595842B2 (en
Inventor
Jack A. Davidson
Derek Hornsey
Robert Gum Hong Lee
Arthur S. Perkins
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.)
Canadian Liquid Air Ltd
Original Assignee
Canadian Liquid Air Ltd
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
Priority claimed from CA000507000A external-priority patent/CA1300320C/en
Application filed by Canadian Liquid Air Ltd filed Critical Canadian Liquid Air Ltd
Publication of AU6467186A publication Critical patent/AU6467186A/en
Application granted granted Critical
Publication of AU595842B2 publication Critical patent/AU595842B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids
    • B01F23/237612—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3133—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit characterised by the specific design of the injector
    • B01F25/31331—Perforated, multi-opening, with a plurality of holes
    • B01F25/313311—Porous injectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
    • B01F25/31421—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction the conduit being porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4335—Mixers with a converging-diverging cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4337—Mixers with a diverging-converging cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/834—Mixing in several steps, e.g. successive steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/715—Feeding the components in several steps, e.g. successive steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/919—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings
    • B01F2025/9191—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component
    • B01F2025/91911—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component with feed openings in the center of the main flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/919—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings
    • B01F2025/9191—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component
    • B01F2025/91912—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component with feed openings at the circumference of the main flow
    • B01F2025/919121—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component with feed openings at the circumference of the main flow with feed openings around the complete circumference of the main flow, e.g. being a perforated or porous part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/919—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings
    • B01F2025/9191—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component
    • B01F2025/919125—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component with feed openings in the center and at the circumference of the main flow

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
AU64671/86A 1985-11-15 1986-11-03 Pulp bleaching Ceased AU595842B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US79828685A 1985-11-15 1985-11-15
US798286 1985-11-15
CA507000 1986-04-18
CA000507000A CA1300320C (en) 1985-11-15 1986-04-18 Pulp bleaching

Publications (2)

Publication Number Publication Date
AU6467186A true AU6467186A (en) 1987-05-21
AU595842B2 AU595842B2 (en) 1990-04-12

Family

ID=25670962

Family Applications (1)

Application Number Title Priority Date Filing Date
AU64671/86A Ceased AU595842B2 (en) 1985-11-15 1986-11-03 Pulp bleaching

Country Status (6)

Country Link
EP (1) EP0226495B1 (en)
AU (1) AU595842B2 (en)
BR (1) BR8605636A (en)
DE (1) DE3672580D1 (en)
NZ (1) NZ218294A (en)
PT (1) PT83745B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE2150045A1 (en) * 2021-01-18 2022-07-19 Valmet Oy Mixing device

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1300322C (en) * 1987-06-08 1992-05-12 Derek Hornsey Method of bleaching or delignification of cellulose pulp with oxygen
FR2617736A1 (en) * 1987-07-08 1989-01-13 Sampson Cat Device for producing emulsion with a view to cleaning and disinfection
RU2103433C1 (en) * 1995-01-16 1998-01-27 Грудинин Владимир Павлович Method and installation for treating fibrous mass by chemical reagent
NO962328L (en) * 1996-06-05 1997-12-08 Aga Ab Method and apparatus for introducing gas into a liquid
DE19849628A1 (en) * 1998-10-28 2000-05-04 Margret Spiegel Method and arrangement for introducing gas into a liquid
EP1319435A3 (en) * 2001-12-12 2004-10-06 Collectplan GmbH Method and apparatus for introducing a first medium in a second medium
DE102004059934A1 (en) * 2004-12-09 2006-06-22 Würdig, Uwe, Dipl.-Ing. System to enrich a fluid with a gas, especially aerate water with oxygen, has a jet within the treatment chamber where the oxygen is ripped out by the water flow to form a mist to dissolve the oxygen
SE528449C2 (en) * 2005-09-28 2006-11-14 Kvaerner Pulping Tech Apparatus for mixing steam to a flow of cellulose pulp
CN101663084B (en) 2007-03-15 2013-01-23 陶氏环球技术公司 Mixer for a continuous flow reactor, method of forming such a mixer, and method of operating such a mixer
US7891861B2 (en) * 2007-09-20 2011-02-22 Fujifilm Corporation Mixing method and mixer for mixing polymer dope, and solution casting process and apparatus
KR101351302B1 (en) * 2012-10-23 2014-01-15 주식회사 디섹 Ballast water managemant system for a shi
EP3485968A4 (en) * 2016-06-15 2020-02-12 Satoshi Anzai Ultrafine bubble generation device for aquaculture or wastewater treatment
WO2020072845A1 (en) * 2018-10-05 2020-04-09 University Of Baltimore Systems, methods and apparatus for utilizing a resuspension tank
CN115448440B (en) * 2022-07-25 2023-10-24 中石化宁波工程有限公司 Fractal oxidation device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968589A (en) * 1958-03-17 1961-01-17 Kimberly Clark Co Continuous pulp bleaching method
US3545731A (en) * 1966-11-08 1970-12-08 Gen Dynamics Corp Apparatus for producing bubbles of very small,microscopic size
DE2046254A1 (en) * 1969-09-18 1971-04-01 Atomic Energy Of Canada Ltd
US3928199A (en) * 1971-09-20 1975-12-23 Airco Inc Gas absorption system and method
US4030969A (en) * 1972-06-13 1977-06-21 Defibrator Ab Method of dispersing a bleaching agent into a stream of fibrous cellulosic pulp material in a throttling nozzle
DE2241673C2 (en) * 1972-09-01 1982-03-04 Vsesojuznyj naučno-issledovatel'skij institut celljulozno-bumažnoj promyšlennosti, Leningrad Plant for processing suspensions of fibrous materials
SE387671B (en) * 1973-04-27 1976-09-13 Mo Och Domsjoe Ab COMPACT WHITE BLEACHING, NON-FLUFFAT LIQUID LIGNOCELLULOSE MATERIAL WITH GASY BLEACHING, PREFERABLY ACID GAS
US3892659A (en) * 1973-05-04 1975-07-01 Airco Inc Multiple cycle process for wastewater purification
US3951733A (en) * 1974-11-06 1976-04-20 International Paper Company Delignification and bleaching of wood pulp with oxygen
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp
JPS54127064A (en) * 1978-03-06 1979-10-02 Komax Systems Inc Charging instrument of stationary mixer
US4259150A (en) * 1978-12-18 1981-03-31 Kamyr Inc. Plural stage mixing and thickening oxygen bleaching process
GB2072027B (en) * 1980-01-30 1983-04-07 Water Res Centre Transfer of oxygen into wastewater
DE3224961A1 (en) * 1982-07-03 1984-01-05 Bernhard Prof. Dipl.-Ing. 5064 Rösrath Kunst Hybrid liquid gasification nozzle
ZA835925B (en) * 1982-09-30 1984-04-25 Black Clawson Co Method and apparatus for oxygen delignification

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE2150045A1 (en) * 2021-01-18 2022-07-19 Valmet Oy Mixing device
WO2022154712A1 (en) * 2021-01-18 2022-07-21 Valmet Ab Mixing device
SE545007C2 (en) * 2021-01-18 2023-02-28 Valmet Oy Mixing device and method for mixing a fluid into a fiber pulp

Also Published As

Publication number Publication date
EP0226495A1 (en) 1987-06-24
PT83745B (en) 1988-08-17
NZ218294A (en) 1990-05-28
DE3672580D1 (en) 1990-08-16
EP0226495B1 (en) 1990-07-11
AU595842B2 (en) 1990-04-12
BR8605636A (en) 1987-08-18
PT83745A (en) 1986-12-01

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired