FI20010384A - Peroxide bleaching of pulp, for the production of paper and fibrous products, involves measuring the oxygen concentration, temperature and/or carbon monoxide concentration in reaction area, based on which process is monitored - Google Patents

Peroxide bleaching of pulp, for the production of paper and fibrous products, involves measuring the oxygen concentration, temperature and/or carbon monoxide concentration in reaction area, based on which process is monitored Download PDF

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Publication number
FI20010384A
FI20010384A FI20010384A FI20010384A FI20010384A FI 20010384 A FI20010384 A FI 20010384A FI 20010384 A FI20010384 A FI 20010384A FI 20010384 A FI20010384 A FI 20010384A FI 20010384 A FI20010384 A FI 20010384A
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FI
Finland
Prior art keywords
pulp
carbon monoxide
temperature
reaction area
monitored
Prior art date
Application number
FI20010384A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI118430B (en
FI20010384A0 (en
Inventor
Tapio Tirri
Olli Dahl
Taisto Tienvieri
Jouko H Lehto
Original Assignee
Upm Kymmene Corp
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 Upm Kymmene Corp filed Critical Upm Kymmene Corp
Priority to FI20010384A priority Critical patent/FI118430B/en
Publication of FI20010384A0 publication Critical patent/FI20010384A0/en
Priority to AU2001258464A priority patent/AU2001258464A1/en
Priority to PCT/FI2001/000429 priority patent/WO2001086059A1/en
Priority to EP01931761A priority patent/EP1278910A1/en
Publication of FI20010384A publication Critical patent/FI20010384A/en
Priority to US10/274,786 priority patent/US20030102094A1/en
Application granted granted Critical
Publication of FI118430B publication Critical patent/FI118430B/en

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Abstract

The method involves contacting a cellulose based fibrous pulp (M) with peroxide (C) in a container (T). The oxygen concentration, temperature and/or carbon monoxide concentration in the reaction area is/are measured, and the process is monitored based on the result. The concentrations of oxygen and carbon monoxide are measured by measuring devices (A, V) and temperature is measured by sensor (S), from the gas volume in the upper part of bleaching container or from the vent gas flowing from the bleaching tower. The consistency of pulp in the reaction area is at least 25% preferably at least 30%. An independent claim is also included for the pulp bleaching device for.
FI20010384A 2000-05-05 2001-02-27 Peroxide bleaching of pulp, for the production of paper and fibrous products, involves measuring the oxygen concentration, temperature and/or carbon monoxide concentration in reaction area, based on which process is monitored FI118430B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI20010384A FI118430B (en) 2001-02-27 2001-02-27 Peroxide bleaching of pulp, for the production of paper and fibrous products, involves measuring the oxygen concentration, temperature and/or carbon monoxide concentration in reaction area, based on which process is monitored
AU2001258464A AU2001258464A1 (en) 2000-05-05 2001-05-04 Method and apparatus for regulating a peroxide bleaching process
PCT/FI2001/000429 WO2001086059A1 (en) 2000-05-05 2001-05-04 Method and apparatus for regulating a peroxide bleaching process
EP01931761A EP1278910A1 (en) 2000-05-05 2001-05-04 Method and apparatus for regulating a peroxide bleaching process
US10/274,786 US20030102094A1 (en) 2000-05-05 2002-10-21 Method in the bleaching of pulp and a device for the bleaching of pulp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20010384A FI118430B (en) 2001-02-27 2001-02-27 Peroxide bleaching of pulp, for the production of paper and fibrous products, involves measuring the oxygen concentration, temperature and/or carbon monoxide concentration in reaction area, based on which process is monitored
FI20010384 2001-02-27

Publications (3)

Publication Number Publication Date
FI20010384A0 FI20010384A0 (en) 2001-02-27
FI20010384A true FI20010384A (en) 2002-08-28
FI118430B FI118430B (en) 2007-11-15

Family

ID=8560536

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20010384A FI118430B (en) 2000-05-05 2001-02-27 Peroxide bleaching of pulp, for the production of paper and fibrous products, involves measuring the oxygen concentration, temperature and/or carbon monoxide concentration in reaction area, based on which process is monitored

Country Status (1)

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FI (1) FI118430B (en)

Also Published As

Publication number Publication date
FI118430B (en) 2007-11-15
FI20010384A0 (en) 2001-02-27

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