FR2350421A1 - Procede de delignification utilisant successivement du bioxyde d'azote et de l'oxygene - Google Patents
Procede de delignification utilisant successivement du bioxyde d'azote et de l'oxygeneInfo
- Publication number
- FR2350421A1 FR2350421A1 FR7713425A FR7713425A FR2350421A1 FR 2350421 A1 FR2350421 A1 FR 2350421A1 FR 7713425 A FR7713425 A FR 7713425A FR 7713425 A FR7713425 A FR 7713425A FR 2350421 A1 FR2350421 A1 FR 2350421A1
- Authority
- FR
- France
- Prior art keywords
- delignification
- treatment
- nitrogen dioxide
- lignocellulose
- reduce pollution
- Prior art date
- 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.)
- Granted
Links
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 title abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 title abstract 2
- 239000001301 oxygen Substances 0.000 title abstract 2
- 229910052760 oxygen Inorganic materials 0.000 title abstract 2
- 239000003513 alkali Substances 0.000 abstract 2
- 239000000460 chlorine Substances 0.000 abstract 2
- 241000609240 Ambelania acida Species 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 239000010905 bagasse Substances 0.000 abstract 1
- 239000002585 base Substances 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000002655 kraft paper Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000010902 straw Substances 0.000 abstract 1
- 238000005406 washing Methods 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA251,752A CA1070909A (en) | 1976-05-04 | 1976-05-04 | Nitrogen dioxide-oxygen delignification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2350421A1 true FR2350421A1 (fr) | 1977-12-02 |
| FR2350421B1 FR2350421B1 (cg-RX-API-DMAC7.html) | 1982-08-13 |
Family
ID=4105864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7713425A Granted FR2350421A1 (fr) | 1976-05-04 | 1977-05-03 | Procede de delignification utilisant successivement du bioxyde d'azote et de l'oxygene |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS52134690A (cg-RX-API-DMAC7.html) |
| AU (1) | AU498646B2 (cg-RX-API-DMAC7.html) |
| BR (1) | BR7702713A (cg-RX-API-DMAC7.html) |
| CA (1) | CA1070909A (cg-RX-API-DMAC7.html) |
| DE (1) | DE2717257A1 (cg-RX-API-DMAC7.html) |
| ES (1) | ES458434A1 (cg-RX-API-DMAC7.html) |
| FI (1) | FI771383A7 (cg-RX-API-DMAC7.html) |
| FR (1) | FR2350421A1 (cg-RX-API-DMAC7.html) |
| NO (1) | NO771297L (cg-RX-API-DMAC7.html) |
| NZ (1) | NZ183555A (cg-RX-API-DMAC7.html) |
| SE (1) | SE7705136L (cg-RX-API-DMAC7.html) |
| ZA (1) | ZA771424B (cg-RX-API-DMAC7.html) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2496138A1 (fr) * | 1980-12-17 | 1982-06-18 | Mo Och Domsjoe Ab | Procede de blanchiment de pate de cellulose |
| FR2519041A1 (fr) * | 1981-12-30 | 1983-07-01 | Mo Och Domsjoe Ab | Procede de delignification de pate cellulosique |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE441192B (sv) * | 1980-05-27 | 1985-09-16 | Mo Och Domsjoe Ab | Forfarande for delignifiering av kemisk cellulosamassa med syrgas i nervaro av ett eller flera neutralisationsmedel |
| SE421938B (sv) * | 1980-06-05 | 1982-02-08 | Mo Och Domsjoe Ab | Forfarande for behandling av cellulosamassa med kveveoxider fore syrgasblekning |
| SE425674B (sv) * | 1981-03-23 | 1982-10-25 | Mo Och Domsjoe Ab | Forfarande for delignifiering av cellulosamassa med kvevedioxid och syrgas |
| DE3118384C1 (de) * | 1981-05-09 | 1982-11-11 | Mannesmann AG, 4000 Düsseldorf | Verfahren zum Bleichen von chemisch hergestelltem Zellstoff mit Ozon |
| SE448006B (sv) * | 1981-09-21 | 1987-01-12 | Mo Och Domsjoe Ab | Forfarande for blekning av cellulosamassa innefattande ett aktiveringssteg med kveveoxider |
| JP2002302888A (ja) * | 2001-04-05 | 2002-10-18 | Oji Paper Co Ltd | 漂白パルプの製造方法 |
| FI20115754A0 (fi) * | 2011-03-22 | 2011-07-15 | Andritz Oy | Menetelmä ja järjestely kemiallisen massan käsittelemiseksi |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2274729A1 (fr) * | 1974-06-11 | 1976-01-09 | Canadian Ind | Procede de blanchiment de matieres lignocellulosiques |
-
1976
- 1976-05-04 CA CA251,752A patent/CA1070909A/en not_active Expired
-
1977
- 1977-03-09 NZ NZ183555A patent/NZ183555A/xx unknown
- 1977-03-09 ZA ZA00771424A patent/ZA771424B/xx unknown
- 1977-03-10 AU AU23111/77A patent/AU498646B2/en not_active Expired
- 1977-04-14 NO NO771297A patent/NO771297L/no unknown
- 1977-04-19 DE DE19772717257 patent/DE2717257A1/de not_active Withdrawn
- 1977-04-28 BR BR7702713A patent/BR7702713A/pt not_active IP Right Cessation
- 1977-04-29 FI FI771383A patent/FI771383A7/fi not_active Application Discontinuation
- 1977-05-02 JP JP5003677A patent/JPS52134690A/ja active Pending
- 1977-05-03 FR FR7713425A patent/FR2350421A1/fr active Granted
- 1977-05-03 SE SE7705136A patent/SE7705136L/xx unknown
- 1977-05-04 ES ES458434A patent/ES458434A1/es not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2274729A1 (fr) * | 1974-06-11 | 1976-01-09 | Canadian Ind | Procede de blanchiment de matieres lignocellulosiques |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2496138A1 (fr) * | 1980-12-17 | 1982-06-18 | Mo Och Domsjoe Ab | Procede de blanchiment de pate de cellulose |
| FR2519041A1 (fr) * | 1981-12-30 | 1983-07-01 | Mo Och Domsjoe Ab | Procede de delignification de pate cellulosique |
Also Published As
| Publication number | Publication date |
|---|---|
| AU498646B2 (en) | 1979-03-22 |
| JPS52134690A (en) | 1977-11-11 |
| SE7705136L (sv) | 1977-11-05 |
| NO771297L (no) | 1977-11-07 |
| AU2311177A (en) | 1978-09-14 |
| CA1070909A (en) | 1980-02-05 |
| NZ183555A (en) | 1978-11-13 |
| ES458434A1 (es) | 1978-03-16 |
| DE2717257A1 (de) | 1977-11-17 |
| FI771383A7 (cg-RX-API-DMAC7.html) | 1977-11-05 |
| BR7702713A (pt) | 1978-03-21 |
| ZA771424B (en) | 1978-02-22 |
| FR2350421B1 (cg-RX-API-DMAC7.html) | 1982-08-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |