AU586304B2 – A method in the manufacturing of cellulose pulp
– Google Patents
AU586304B2 – A method in the manufacturing of cellulose pulp
– Google Patents
A method in the manufacturing of cellulose pulp
Info
Publication number
AU586304B2
AU586304B2
AU66407/86A
AU6640786A
AU586304B2
AU 586304 B2
AU586304 B2
AU 586304B2
AU 66407/86 A
AU66407/86 A
AU 66407/86A
AU 6640786 A
AU6640786 A
AU 6640786A
AU 586304 B2
AU586304 B2
AU 586304B2
Authority
AU
Australia
Prior art keywords
gas
nitrogen oxides
lignocellulosic material
oxygen
activation
Prior art date
1985-12-10
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.)
Ceased
Application number
AU66407/86A
Other versions
AU6640786A
(en
Inventor
Hans Olof Prof. Samuelson
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.)
Mo och Domsjo AB
Original Assignee
Mo och Domsjo 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.)
1985-12-10
Filing date
1986-12-10
Publication date
1989-07-06
1986-12-10
Application filed by Mo och Domsjo AB
filed
Critical
Mo och Domsjo AB
1987-06-11
Publication of AU6640786A
publication
Critical
patent/AU6640786A/en
1989-07-06
Application granted
granted
Critical
1989-07-06
Publication of AU586304B2
publication
Critical
patent/AU586304B2/en
2006-12-10
Anticipated expiration
legal-status
Critical
Status
Ceased
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
D21C11/00—Regeneration of pulp liquors or effluent waste waters
D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
Abstract
The present invention solves the problems encountered when charging oxygen (O2) to and removing inert gas from the reactor gas obtained in the activation of lignocellulosic material with gas that contains nitrogen dioxide (NO2) and subsequent delignification of the material, the material being preferably in the form of chemical, aqueous cellulose pulp. The invention resides in a method which is characterized by separating (5) gas rich in nitrogen oxides from the lignocellulosic material during and/or after the activation thereof; by treating (6) all or part of the separated gas rich in nitrogen oxides with oxygen (7) in an amount corresponding to 10-200 mole percent calculated on the amount of nitric oxide (NO) present in the gas rich in nitrogen oxides separated for this treatment; by bringing (8) oxygen-treated gas into contact with lignocellulosic material so as to activate the material; and by separating gas lean in nitrogen oxides from the lignocellulosic material during a stage of the activation process different to that from which gas rich in nitrogen oxides was taken; and by removing (9) gas lean in nitrogen oxides from the process.
AU66407/86A
1985-12-10
1986-12-10
A method in the manufacturing of cellulose pulp
Ceased
AU586304B2
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
SE8505825
1985-12-10
SE8505825A
SE451023B
(en)
1985-12-10
1985-12-10
METHOD OF ACTIVATING LIGNOCELLULOSAMATER MATERIAL WITH NITROGEN Dioxide CONTAINING GAS
Publications (2)
Publication Number
Publication Date
AU6640786A
AU6640786A
(en)
1987-06-11
AU586304B2
true
AU586304B2
(en)
1989-07-06
Family
ID=20362410
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
AU66407/86A
Ceased
AU586304B2
(en)
1985-12-10
1986-12-10
A method in the manufacturing of cellulose pulp
Country Status (12)
Country
Link
US
(1)
US4853082A
(en)
EP
(1)
EP0225638B1
(en)
JP
(1)
JPS62141186A
(en)
AT
(1)
ATE51048T1
(en)
AU
(1)
AU586304B2
(en)
DE
(1)
DE3669554D1
(en)
ES
(1)
ES2014410B3
(en)
FI
(1)
FI85992C
(en)
NO
(1)
NO163576C
(en)
NZ
(1)
NZ218358A
(en)
PT
(1)
PT83895B
(en)
SE
(1)
SE451023B
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
AU605913B2
(en)
*
1987-09-28
1991-01-24
Mo Och Domsjo Aktiebolag
A method in the activation of lignocellulosic material with a gas containing nitrogen dioxide
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CA2452145A1
(en)
*
2003-06-03
2004-12-03
David Tarasenko
Method for producing pulp and lignin
Citations (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
AU542952B2
(en)
*
1981-05-27
1985-03-28
Mo Och Domsjo Aktiebolag
Bleaching cellulose pulp
Family Cites Families (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3578553A
(en)
*
1968-09-10
1971-05-11
Int Paper Canada
Nitrogen dioxide pulping process
US4076579A
(en)
*
1973-08-06
1978-02-28
The Regents Of The University Of California
Pulping of lignocellulosic material by sequential treatment thereof with nitric oxide and oxygen
SE441192B
(en)
*
1980-05-27
1985-09-16
Mo Och Domsjoe Ab
PROCEDURE FOR DELIGNIFICATION OF CHEMICAL CELLULOSAMASSA WITH OXYGEN IN THE PRESENCE OF ONE OR MULTIPLE NEUTRALIZING AGENTS
SE421938B
(en)
*
1980-06-05
1982-02-08
Mo Och Domsjoe Ab
PROCEDURE FOR TREATMENT OF CELLULOSAMASSA
SE451149B
(en)
*
1983-01-26
1987-09-07
Mo Och Domsjoe Ab
APPARATUS FOR CONTINUOUS TREATMENT OF WATER-INHALING LIGNOCELLULOSAMATER WITH NITRO OXIDE AND ACID
1985
1985-12-10
SE
SE8505825A
patent/SE451023B/en
not_active
IP Right Cessation
1986
1986-11-21
NZ
NZ218358A
patent/NZ218358A/en
unknown
1986-12-09
PT
PT83895A
patent/PT83895B/en
not_active
IP Right Cessation
1986-12-09
AT
AT86117166T
patent/ATE51048T1/en
not_active
IP Right Cessation
1986-12-09
EP
EP86117166A
patent/EP0225638B1/en
not_active
Expired – Lifetime
1986-12-09
DE
DE8686117166T
patent/DE3669554D1/en
not_active
Expired – Fee Related
1986-12-09
NO
NO864943A
patent/NO163576C/en
unknown
1986-12-09
JP
JP61293314A
patent/JPS62141186A/en
active
Granted
1986-12-09
ES
ES86117166T
patent/ES2014410B3/en
not_active
Expired – Lifetime
1986-12-10
AU
AU66407/86A
patent/AU586304B2/en
not_active
Ceased
1986-12-10
FI
FI865032A
patent/FI85992C/en
not_active
IP Right Cessation
1987
1987-06-09
US
US07/060,131
patent/US4853082A/en
not_active
Expired – Fee Related
Patent Citations (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
AU542952B2
(en)
*
1981-05-27
1985-03-28
Mo Och Domsjo Aktiebolag
Bleaching cellulose pulp
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
AU605913B2
(en)
*
1987-09-28
1991-01-24
Mo Och Domsjo Aktiebolag
A method in the activation of lignocellulosic material with a gas containing nitrogen dioxide
Also Published As
Publication number
Publication date
FI865032A
(en)
1987-06-11
NO163576B
(en)
1990-03-12
FI85992C
(en)
1992-06-25
AU6640786A
(en)
1987-06-11
ES2014410B3
(en)
1990-07-16
ATE51048T1
(en)
1990-03-15
PT83895A
(en)
1987-01-01
NO864943L
(en)
1987-06-11
NO864943D0
(en)
1986-12-09
EP0225638A1
(en)
1987-06-16
US4853082A
(en)
1989-08-01
PT83895B
(en)
1989-06-30
NZ218358A
(en)
1989-08-29
NO163576C
(en)
1990-06-20
SE8505825L
(en)
1987-06-11
EP0225638B1
(en)
1990-03-14
DE3669554D1
(en)
1990-04-19
FI85992B
(en)
1992-03-13
JPS62141186A
(en)
1987-06-24
SE8505825D0
(en)
1985-12-10
SE451023B
(en)
1987-08-24
FI865032A0
(en)
1986-12-10
JPH0129918B2
(en)
1989-06-14
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