SE0303149D0 - Method and systems for oxygen delineation ac cellulose pulp - Google Patents

Method and systems for oxygen delineation ac cellulose pulp

Info

Publication number
SE0303149D0
SE0303149D0 SE0303149A SE0303149A SE0303149D0 SE 0303149 D0 SE0303149 D0 SE 0303149D0 SE 0303149 A SE0303149 A SE 0303149A SE 0303149 A SE0303149 A SE 0303149A SE 0303149 D0 SE0303149 D0 SE 0303149D0
Authority
SE
Sweden
Prior art keywords
oxygen gas
delignification
cellulose pulp
oxygen
gas
Prior art date
Application number
SE0303149A
Other languages
Swedish (sv)
Other versions
SE526000C2 (en
SE0303149L (en
Inventor
Stefan Backa
Carin Rudfeldt
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE0303149A priority Critical patent/SE526000C2/en
Publication of SE0303149D0 publication Critical patent/SE0303149D0/en
Priority to EP04800369A priority patent/EP1711655A1/en
Priority to US10/567,322 priority patent/US20060207733A1/en
Priority to PCT/SE2004/001708 priority patent/WO2005056919A1/en
Publication of SE0303149L publication Critical patent/SE0303149L/en
Publication of SE526000C2 publication Critical patent/SE526000C2/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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

The method and system is for the acid gas delignification of cellulose pulp in a gas/fluid suspension. The oxygen gas delignification takes place in a reactor system with one or several oxygen gas reactors. Delignification chemicals are added at least before the first oxygen gas reactor such that oxygen gas remains present during the complete reaction process in the reactors. Alkali in an amount that ensures that the pH lies above 9 is also added. The temperature of the cellulose pulp is measured at two different positions (T 1 , T 2 , . . . , Tn) viewed in the direction of flow of the pulp though the system. The measurements are used to control the charged amount of the delignification chemicals to the oxygen gas delignification. The first temperature measurement (T 1 ) is carried out at a position in association with the first addition of oxygen gas.
SE0303149A 2003-11-26 2003-11-26 Method and system for controlling the addition of oxygen and alkali in oxygen delignification SE526000C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE0303149A SE526000C2 (en) 2003-11-26 2003-11-26 Method and system for controlling the addition of oxygen and alkali in oxygen delignification
EP04800369A EP1711655A1 (en) 2003-11-26 2004-11-23 A method and system for controlling the addition of oxygen gas and alkali during oxygen gas delignification
US10/567,322 US20060207733A1 (en) 2003-11-26 2004-11-23 Method and system for controlling the addition of oxygen gas and alkali during oxygen gas delignification
PCT/SE2004/001708 WO2005056919A1 (en) 2003-11-26 2004-11-23 A method and system for controlling the addition of oxygen gas and alkali during oxygen gas delignification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0303149A SE526000C2 (en) 2003-11-26 2003-11-26 Method and system for controlling the addition of oxygen and alkali in oxygen delignification

Publications (3)

Publication Number Publication Date
SE0303149D0 true SE0303149D0 (en) 2003-11-26
SE0303149L SE0303149L (en) 2005-05-27
SE526000C2 SE526000C2 (en) 2005-06-14

Family

ID=29729163

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0303149A SE526000C2 (en) 2003-11-26 2003-11-26 Method and system for controlling the addition of oxygen and alkali in oxygen delignification

Country Status (4)

Country Link
US (1) US20060207733A1 (en)
EP (1) EP1711655A1 (en)
SE (1) SE526000C2 (en)
WO (1) WO2005056919A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160002858A1 (en) * 2014-07-03 2016-01-07 Linde Aktiengesellschaft Methods for the oxygen-based delignification of pulp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162933A (en) * 1973-05-15 1979-07-31 Kamyr Inc. Exothermic heat as a means of determining the degree of delignification
US4177105A (en) * 1973-05-22 1979-12-04 Kamyr, Incorporated Apparatus for delignifying and bleaching cellulose pulp
SE421019B (en) * 1980-08-26 1981-11-16 Kamyr Ab PROCEDURE FOR CHEMICAL REGULATION IN THE TREATMENT OF A SUBSTANCE, SPECIAL MASS, WITH GAS
FI71178C (en) * 1984-11-08 1988-05-18 Rauma Repola Oy Procedure for controlling oxygen bleaching process
US5306391A (en) * 1992-06-16 1994-04-26 Air Products And Chemicals, Inc. Control of chemical dosage to a pulp slurry
DE69608910T2 (en) * 1995-12-07 2001-01-18 Beloit Technologies, Inc. DELIGNIFICATION OF A MEDIUM-CONSISTENCY PAPER-SELLED MATERIAL WITH OXYGEN
SE510740C2 (en) * 1996-11-26 1999-06-21 Sunds Defibrator Ind Ab Oxygen delignification control

Also Published As

Publication number Publication date
SE526000C2 (en) 2005-06-14
EP1711655A1 (en) 2006-10-18
WO2005056919A1 (en) 2005-06-23
SE0303149L (en) 2005-05-27
US20060207733A1 (en) 2006-09-21

Similar Documents

Publication Publication Date Title
CA1170430A (en) Method for control of chemicals during treatment with gas
DK374889D0 (en) PROCEDURE FOR PROCESS MONITORING
Kanofsky et al. Reactive absorption of ozone by aqueous biomolecule solutions: implications for the role of sulfhydryl compounds as targets for ozone
CN107021953B (en) The preparation method and applications of coumarin fluorescent probe
CN108775955A (en) A kind of petrochemical industry oil-gas pipeline corrosion state Fibre Optical Sensor on-line monitoring system
US3531252A (en) Methods of analyzing conductive solutions
CN106248862A (en) A kind of chloride ion conductor method in polycarboxylate water-reducer
Massone et al. Measurement of ammonium concentration and nitrification rate by a new titrimetric biosensor
SE0303149D0 (en) Method and systems for oxygen delineation ac cellulose pulp
Jianzhong et al. A flow-injection type chemiluminescence-based sensor for cyanide
Kokkonen et al. On-line process monitoring of water-soluble ions in pulp and paper machine waters by capillary electrophoresis
ES8405944A1 (en) Apparatus, and method for controlling consistency
GB2064131A (en) Determining ionic species electrochemically
ATE68883T1 (en) METHOD OF CHECKING THE RUNTIME STATE OF A MEMBRANE-COVERED POLAROGRAPHIC SENSOR.
CN110174398A (en) Water body total chrome content on-line measuring device and method based on high-level oxidation technology
CN206584241U (en) Strength of fluid On-line Control device
KR970048434A (en) Automatic Measurement and Control of Alkali Concentration in Degreasing Process Using Ion-Selective Electrode
SE8505285L (en) PROCEDURE FOR CONTROL OF ALKALIC CELLULOS COOKING BY A QUICK ANALYZER THAT METERS ORGANIC OR ORGANIC COMPONENTS IN COOKWOOD
CN206601637U (en) Working liquid ph on-line control device
US6017420A (en) Apparatus for automated monitoring of pulp retention time using an iodine salt tracer
SU998617A1 (en) Method of determining concentration of active components of lye in liquors
JP2005024357A (en) Automatic measuring instrument for concentration of treatment agent in aqueous system
SE444004B (en) PROCEDURE FOR PREVENTING THE STORAGE OF COLLECTED CRYSTALLINE SUBSTANCES ON THE SURFACE OF METORGAN IN ROCK GAS DESULATOR FACILITIES
JPS5758895A (en) Analytical method of creatinine and apparatus
KR100363438B1 (en) Continuous activated sludge respiration and short term BOD analyzer based on tubular flow respiration chamber

Legal Events

Date Code Title Description
NUG Patent has lapsed