SE8008874L - Forfarande vid blekning av cellulosamassa - Google Patents

Forfarande vid blekning av cellulosamassa

Info

Publication number: SE8008874L
Authority: SE; Sweden
Prior art keywords: pulp; white; cellulose; activation stage; alkali treatment
Prior art date: 1980-12-17

Application number

SE8008874A

Other languages

Unknown language ( )

English (en)

Other versions

SE445122B (sv

Inventor

H O Samuelson

Original Assignee

Mo Och Domsjoe 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.)

1980-12-17

Filing date

1980-12-17

Publication date

1982-06-18

1980-12-17 Application filed by Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab

1980-12-17 Priority to SE8008874A priority Critical patent/SE445122B/sv

1981-11-10 Priority to NZ198925A priority patent/NZ198925A/en

1981-11-23 Priority to AU77738/81A priority patent/AU548046B2/en

1981-12-09 Priority to FI813954A priority patent/FI73017C/sv

1981-12-14 Priority to JP56202386A priority patent/JPS57121689A/ja

1981-12-14 Priority to CA000392232A priority patent/CA1159203A/en

1981-12-16 Priority to FR8123482A priority patent/FR2496138A1/fr

1981-12-16 Priority to NO814309A priority patent/NO158953C/no

1982-06-18 Publication of SE8008874L publication Critical patent/SE8008874L/sv

1986-06-02 Publication of SE445122B publication Critical patent/SE445122B/sv

Links

238000000034 method Methods 0.000 title abstract 3
230000004913 activation Effects 0.000 abstract 4
229920002678 cellulose Polymers 0.000 abstract 4
239000001913 cellulose Substances 0.000 abstract 4
239000003513 alkali Substances 0.000 abstract 3
238000004061 bleaching Methods 0.000 abstract 2
230000015556 catabolic process Effects 0.000 abstract 2
238000006731 degradation reaction Methods 0.000 abstract 2
MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract 1
230000003213 activating effect Effects 0.000 abstract 1
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
229910001882 dioxygen Inorganic materials 0.000 abstract 1
238000000605 extraction Methods 0.000 abstract 1
239000007789 gas Substances 0.000 abstract 1
239000001301 oxygen Substances 0.000 abstract 1
229910052760 oxygen Inorganic materials 0.000 abstract 1
239000000126 substance Substances 0.000 abstract 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1

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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Investigating Or Analysing Biological Materials (AREA)

SE8008874A 1980-12-17 1980-12-17 Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid SE445122B (sv)

Priority Applications (8)

Application Number	Priority Date	Filing Date	Title
SE8008874A SE445122B (sv)	1980-12-17	1980-12-17	Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid
NZ198925A NZ198925A (en)	1980-12-17	1981-11-10	Method for bleaching cellulose pulp using nitrogen oxides and oxygen followed by an alkali treatment
AU77738/81A AU548046B2 (en)	1980-12-17	1981-11-23	Bleaching cellulose pulp
FI813954A FI73017C (sv)	1980-12-17	1981-12-09	Förfarande vid blekning av cellulosa.
JP56202386A JPS57121689A (en)	1980-12-17	1981-12-14	Bleaching of cellulose pulp
CA000392232A CA1159203A (en)	1980-12-17	1981-12-14	Process for bleaching cellulose pulp by activation with no.sub.2 and oxygen and alkali-extraction at elevated temperature with cellulose degradation
FR8123482A FR2496138A1 (fr)	1980-12-17	1981-12-16	Procede de blanchiment de pate de cellulose
NO814309A NO158953C (no)	1980-12-17	1981-12-16	Fremgangsmaate ved delignifisering av cellulosemasse.

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE8008874A SE445122B (sv)	1980-12-17	1980-12-17	Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid

Publications (2)

Publication Number	Publication Date
SE8008874L true SE8008874L (sv)	1982-06-18
SE445122B SE445122B (sv)	1986-06-02

Family

ID=20342493

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE8008874A SE445122B (sv)	1980-12-17	1980-12-17	Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid

Country Status (8)

Country	Link
JP (1)	JPS57121689A (sv)
AU (1)	AU548046B2 (sv)
CA (1)	CA1159203A (sv)
FI (1)	FI73017C (sv)
FR (1)	FR2496138A1 (sv)
NO (1)	NO158953C (sv)
NZ (1)	NZ198925A (sv)
SE (1)	SE445122B (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE434283B (sv) *	1982-12-01	1984-07-16	Mo Och Domsjoe Ab	Forfarande for delignifiering av cellulosamassa med kveveoxider och syrgas

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA1070909A (en) *	1976-05-04	1980-02-05	Canadian Industries Limited	Nitrogen dioxide-oxygen delignification

1980
- 1980-12-17 SE SE8008874A patent/SE445122B/sv not_active IP Right Cessation
1981
- 1981-11-10 NZ NZ198925A patent/NZ198925A/en unknown
- 1981-11-23 AU AU77738/81A patent/AU548046B2/en not_active Ceased
- 1981-12-09 FI FI813954A patent/FI73017C/sv not_active IP Right Cessation
- 1981-12-14 JP JP56202386A patent/JPS57121689A/ja active Granted
- 1981-12-14 CA CA000392232A patent/CA1159203A/en not_active Expired
- 1981-12-16 FR FR8123482A patent/FR2496138A1/fr active Granted
- 1981-12-16 NO NO814309A patent/NO158953C/no unknown

Also Published As

Publication number	Publication date
FR2496138B1 (sv)	1983-12-02
NO158953B (no)	1988-08-08
FI73017B (fi)	1987-04-30
NO814309L (no)	1982-06-18
FR2496138A1 (fr)	1982-06-18
FI813954L (fi)	1982-06-18
AU548046B2 (en)	1985-11-21
JPS6350466B2 (sv)	1988-10-07
AU7773881A (en)	1982-06-24
FI73017C (sv)	1987-08-10
NZ198925A (en)	1984-09-28
NO158953C (no)	1988-11-16
CA1159203A (en)	1983-12-27
JPS57121689A (en)	1982-07-29
SE445122B (sv)	1986-06-02

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1995-01-31

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