OA03094A - Improvements to the delignification and bleaching of cellulose pulps with gaseous oxygen. - Google Patents
Improvements to the delignification and bleaching of cellulose pulps with gaseous oxygen.Info
- Publication number
- OA03094A OA03094A OA53668A OA53668A OA03094A OA 03094 A OA03094 A OA 03094A OA 53668 A OA53668 A OA 53668A OA 53668 A OA53668 A OA 53668A OA 03094 A OA03094 A OA 03094A
- Authority
- OA
- OAPI
- Prior art keywords
- delignification
- bleaching
- gaseous oxygen
- cellulose pulps
- pulps
- Prior art date
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/93—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary discs
-
- 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
- B01F35/50—Mixing receptacles
- B01F35/53—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components
- B01F35/531—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components with baffles, plates or bars on the wall or the bottom
- B01F35/5312—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components with baffles, plates or bars on the wall or the bottom with vertical baffles mounted on the walls
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
-
- 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
- B01F35/50—Mixing receptacles
- B01F35/53—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components
- B01F35/531—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components with baffles, plates or bars on the wall or the bottom
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE954068 | 1968-07-11 | ||
SE6809689A SE411771B (en) | 1968-07-15 | 1968-07-15 | DEVICE FOR CELLULOSAMASSA TREATMENT WITH GASIC ACID |
ZA686629 | 1968-10-14 | ||
SE86869 | 1969-01-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
OA03094A true OA03094A (en) | 1970-12-15 |
Family
ID=27484467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
OA53668A OA03094A (en) | 1968-07-11 | 1969-07-09 | Improvements to the delignification and bleaching of cellulose pulps with gaseous oxygen. |
Country Status (7)
Country | Link |
---|---|
US (2) | US3660225A (en) |
DE (1) | DE1935067C3 (en) |
ES (1) | ES369349A1 (en) |
FI (1) | FI45473C (en) |
FR (1) | FR2012740A1 (en) |
NO (1) | NO128336B (en) |
OA (1) | OA03094A (en) |
Families Citing this family (70)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4105494A (en) * | 1973-01-05 | 1978-08-08 | Sunds Aktiebolag | Process of gas-phase bleaching high consistency finely disintegrated pulp |
US4177105A (en) * | 1973-05-22 | 1979-12-04 | Kamyr, Incorporated | Apparatus for delignifying and bleaching cellulose pulp |
US4062722A (en) * | 1974-01-18 | 1977-12-13 | Carlos Ibanez Ajuria | Device for treating deformable particles with the counterflowing liquids |
US4089737A (en) * | 1974-02-18 | 1978-05-16 | Toyo Pulp Company, Ltd. | Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein |
US3964962A (en) * | 1974-02-25 | 1976-06-22 | Ingersoll-Rand Company | Gaseous reaction apparatus and processes including a peripheral gas receiving chamber and a gas recirculation conduit |
GB1505529A (en) * | 1974-06-14 | 1978-03-30 | Mo Och Domsjoe Ab | Method for the oxygen-gas delignification of lignocellulosic material and apparatus for carrying out the method |
SE431662B (en) * | 1974-07-05 | 1984-02-20 | Kamyr Ab | KEEP ON CONTINUOUS COOKING OF FIBER MATERIAL |
US3966542A (en) * | 1974-09-20 | 1976-06-29 | General Signal Corporation | Multi-stage bleaching of pulp using successively lower power levels |
US4058433A (en) * | 1975-03-06 | 1977-11-15 | Gulf States Paper Corporation | Conversion of sulfur in blank liquor to eliminate odorous emissions and facilitate the collection of sulfate soaps |
NO137651C (en) * | 1975-10-31 | 1978-03-29 | Myrens Verksted As | PROCEDURE AND APPARATUS FOR CONTINUOUS TREATMENT OF FINDEL FIBER MATERIAL OR CELLULOSIZED MASS WITH GAS WITHOUT COVER. |
US4338158A (en) * | 1976-04-09 | 1982-07-06 | Weyerhaeuser Company | Pulping in the presence of a protector |
FI67413C (en) * | 1977-04-27 | 1985-03-11 | Myrens Verksted As | FOERFARANDE FOER BEHANDLING AV FINFOERDELAD FIBERHALTIG ELLER CELLULOSAHALTIG MASS SAMT ANORDNING FOER UTFOERANDE AV FOERFARANDET |
US4161421A (en) * | 1977-09-13 | 1979-07-17 | Kamyr, Inc. | Method and apparatus for continuous oxygen bleaching of cellulosic pulp |
US4259150A (en) * | 1978-12-18 | 1981-03-31 | Kamyr Inc. | Plural stage mixing and thickening oxygen bleaching process |
US4451268A (en) * | 1982-09-29 | 1984-05-29 | Lerch John A | Dry acetylene generator |
US4744873A (en) * | 1986-11-25 | 1988-05-17 | The Dow Chemical Company | Multiple compartment electrolytic cell |
US5135968A (en) * | 1990-10-10 | 1992-08-04 | Stranco, Ltd. | Methods and apparatus for treating wastewater |
US5252635A (en) * | 1987-08-25 | 1993-10-12 | Stranco, Inc. | Polymer activation method using two separate mixing zones |
US5316031A (en) * | 1987-08-25 | 1994-05-31 | Brazelton Carl L | Valve with independent control of discharge through plurality of orifices |
US5061456A (en) * | 1987-08-25 | 1991-10-29 | Stranco, Inc. | Polymer activation apparatus |
US5164429A (en) * | 1987-08-25 | 1992-11-17 | Stranco, Inc. | Polymer activation apparatus |
US5217574A (en) * | 1989-02-15 | 1993-06-08 | Union Camp Patent Holdings Inc. | Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp |
US5211811A (en) * | 1989-02-15 | 1993-05-18 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification |
US5525195A (en) * | 1989-02-15 | 1996-06-11 | Union Camp Patent Holding, Inc. | Process for high consistency delignification using a low consistency alkali pretreatment |
US5409570A (en) * | 1989-02-15 | 1995-04-25 | Union Camp Patent Holding, Inc. | Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone |
US5472572A (en) * | 1990-10-26 | 1995-12-05 | Union Camp Patent Holding, Inc. | Reactor for bleaching high consistency pulp with ozone |
US5188708A (en) * | 1989-02-15 | 1993-02-23 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification followed by ozone relignification |
US5173153A (en) * | 1991-01-03 | 1992-12-22 | Union Camp Patent Holding, Inc. | Process for enhanced oxygen delignification using high consistency and a split alkali addition |
US5181989A (en) * | 1990-10-26 | 1993-01-26 | Union Camp Patent Holdings, Inc. | Reactor for bleaching high consistency pulp with ozone |
US5085734A (en) * | 1989-02-15 | 1992-02-04 | Union Camp Patent Holding, Inc. | Methods of high consistency oxygen delignification using a low consistency alkali pretreatment |
US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
US5164043A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
US5441603A (en) * | 1990-05-17 | 1995-08-15 | Union Camp Patent Holding, Inc. | Method for chelation of pulp prior to ozone delignification |
US5520783A (en) * | 1990-10-26 | 1996-05-28 | Union Camp Patent Holding, Inc. | Apparatus for bleaching high consistency pulp with ozone |
US5174861A (en) * | 1990-10-26 | 1992-12-29 | Union Camp Patent Holdings, Inc. | Method of bleaching high consistency pulp with ozone |
DE69221385T2 (en) * | 1991-05-24 | 1997-12-11 | Union Camp Patent Holding, Inc., Wilmington, Del. | Two-stage pulp bleaching reactor and method for bleaching with ozone |
US5372679A (en) * | 1992-06-08 | 1994-12-13 | Air Products And Chemicals, Inc. | Reactor system for treating cellulosic pulp at a constant upward flow velocity |
US5338779A (en) * | 1992-09-18 | 1994-08-16 | Stranco, Inc | Dry polymer activation apparatus and method |
US5554259A (en) * | 1993-10-01 | 1996-09-10 | Union Camp Patent Holdings, Inc. | Reduction of salt scale precipitation by control of process stream Ph and salt concentration |
US6174409B1 (en) | 1997-09-19 | 2001-01-16 | American Air Liquide Inc. | Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process |
US6143184A (en) | 1999-03-02 | 2000-11-07 | United States Filter Corporation | Air and water purification using continuous breakpoint halogenation |
US6409926B1 (en) | 1999-03-02 | 2002-06-25 | United States Filter Corporation | Air and water purification using continuous breakpoint halogenation and peroxygenation |
AU7001901A (en) | 2000-06-22 | 2002-01-02 | United States Filter Corp | Corrosion control utilizing a hydrogen peroxide donor |
US6419817B1 (en) | 2000-06-22 | 2002-07-16 | United States Filter Corporation | Dynamic optimization of chemical additives in a water treatment system |
US6716359B1 (en) | 2000-08-29 | 2004-04-06 | United States Filter Corporation | Enhanced time-based proportional control |
US20020129911A1 (en) * | 2000-10-16 | 2002-09-19 | Marcoccia Bruno S. | Process and configuration for providing external upflow/internal downflow in a continuous digester |
US6620315B2 (en) | 2001-02-09 | 2003-09-16 | United States Filter Corporation | System for optimized control of multiple oxidizer feedstreams |
US6776926B2 (en) * | 2001-08-09 | 2004-08-17 | United States Filter Corporation | Calcium hypochlorite of reduced reactivity |
US7108781B2 (en) * | 2002-02-26 | 2006-09-19 | Usfilter Corporation | Enhanced air and water purification using continuous breakpoint halogenation with free oxygen radicals |
US6991735B2 (en) * | 2002-02-26 | 2006-01-31 | Usfilter Corporation | Free radical generator and method |
US10343939B2 (en) | 2006-06-06 | 2019-07-09 | Evoqua Water Technologies Llc | Ultraviolet light activated oxidation process for the reduction of organic carbon in semiconductor process water |
US8652336B2 (en) * | 2006-06-06 | 2014-02-18 | Siemens Water Technologies Llc | Ultraviolet light activated oxidation process for the reduction of organic carbon in semiconductor process water |
US8741155B2 (en) | 2007-04-03 | 2014-06-03 | Evoqua Water Technologies Llc | Method and system for providing ultrapure water |
US8753522B2 (en) * | 2007-04-03 | 2014-06-17 | Evoqua Water Technologies Llc | System for controlling introduction of a reducing agent to a liquid stream |
US20080245737A1 (en) * | 2007-04-03 | 2008-10-09 | Siemens Water Technologies Corp. | Method and system for providing ultrapure water |
US8961798B2 (en) * | 2007-04-03 | 2015-02-24 | Evoqua Water Technologies Llc | Method for measuring a concentration of a compound in a liquid stream |
US9365435B2 (en) * | 2007-04-03 | 2016-06-14 | Evoqua Water Technologies Llc | Actinic radiation reactor |
US9365436B2 (en) * | 2007-04-03 | 2016-06-14 | Evoqua Water Technologies Llc | Method of irradiating a liquid |
US9725343B2 (en) | 2007-04-03 | 2017-08-08 | Evoqua Water Technologies Llc | System and method for measuring and treating a liquid stream |
US8591730B2 (en) * | 2009-07-30 | 2013-11-26 | Siemens Pte. Ltd. | Baffle plates for an ultraviolet reactor |
WO2012024314A1 (en) | 2010-08-17 | 2012-02-23 | Andritz Technology And Asset Management Gmbh | Method and system for the torrefaction of lignocellulosic material |
EP2527301B1 (en) | 2011-05-26 | 2016-04-27 | Evoqua Water Technologies GmbH | Method and arrangement for a water treatment |
US20130105295A1 (en) * | 2011-06-28 | 2013-05-02 | Andritz Inc. | System for the torrefaction of lignocellulosic material |
US20130098751A1 (en) * | 2011-06-28 | 2013-04-25 | Andritz Inc. | Method for the torrefaction of lignocellulosic material |
WO2013003599A2 (en) * | 2011-06-28 | 2013-01-03 | Andritz Inc. | Method for the torrefaction of lignocellulosic material |
BR112013033740A2 (en) * | 2011-09-21 | 2017-02-07 | Andritz Inc | Method and system for roasting lignocellulosic material |
FR2982273B1 (en) * | 2011-11-09 | 2014-03-14 | Commissariat Energie Atomique | DRYING AND TORREFACTION REACTOR OF BIOMASS, PREFERABLY LIGNO-CELLULOSIC |
US11161762B2 (en) | 2015-01-21 | 2021-11-02 | Evoqua Water Technologies Llc | Advanced oxidation process for ex-situ groundwater remediation |
US10494281B2 (en) | 2015-01-21 | 2019-12-03 | Evoqua Water Technologies Llc | Advanced oxidation process for ex-situ groundwater remediation |
CN107020041A (en) * | 2016-01-29 | 2017-08-08 | 上海戴沃机械科技有限公司 | A kind of new mine product stirs barrel |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1529919A (en) * | 1922-03-06 | 1925-03-17 | Stebbins Engineering And Mfg C | Pulp-bleaching method and apparatus |
US2431478A (en) * | 1942-07-25 | 1947-11-25 | Raymond P Hill | Bleaching fibrous material |
US2662821A (en) * | 1949-05-03 | 1953-12-15 | Celotex Corp | Fiber preparation device |
US3041051A (en) * | 1959-08-10 | 1962-06-26 | Reiffen Ernst Alfred | Mixer |
US3298900A (en) * | 1963-03-22 | 1967-01-17 | Kamyr Ab | Method and apparatus for the continuous bleaching of cellulosic pulp |
FI41897B (en) * | 1963-12-23 | 1969-12-01 | Kamyr Ab | |
US3492199A (en) * | 1966-10-04 | 1970-01-27 | Fmc Corp | Bleaching fluffed mechanical wood pulp with hydrogen peroxide |
-
1969
- 1969-07-09 OA OA53668A patent/OA03094A/en unknown
- 1969-07-10 US US840639A patent/US3660225A/en not_active Expired - Lifetime
- 1969-07-10 ES ES369349A patent/ES369349A1/en not_active Expired
- 1969-07-10 DE DE1935067A patent/DE1935067C3/en not_active Expired
- 1969-07-10 FR FR6923422A patent/FR2012740A1/fr active Pending
- 1969-07-10 FI FI692052A patent/FI45473C/en active
- 1969-07-10 NO NO02888/69A patent/NO128336B/no unknown
-
1972
- 1972-01-27 US US00221263A patent/US3742735A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES369349A1 (en) | 1972-03-16 |
NO128336B (en) | 1973-10-29 |
US3660225A (en) | 1972-05-02 |
FR2012740A1 (en) | 1970-03-20 |
FI45473C (en) | 1972-06-12 |
US3742735A (en) | 1973-07-03 |
FI45473B (en) | 1972-02-29 |
DE1935067A1 (en) | 1970-04-09 |
DE1935067C3 (en) | 1975-04-24 |
DE1935067B2 (en) | 1974-08-15 |
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