FI65291C - Foerfarande foer blekning av ett cellulosahaltigt vegetablisktmaterial - Google Patents
Foerfarande foer blekning av ett cellulosahaltigt vegetablisktmaterial Download PDFInfo
- Publication number
- FI65291C FI65291C FI760266A FI760266A FI65291C FI 65291 C FI65291 C FI 65291C FI 760266 A FI760266 A FI 760266A FI 760266 A FI760266 A FI 760266A FI 65291 C FI65291 C FI 65291C
- Authority
- FI
- Finland
- Prior art keywords
- chlorine
- chlorination
- bleaching
- cellulosic
- treatment
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 31
- 238000011282 treatment Methods 0.000 claims description 31
- 238000005660 chlorination reaction Methods 0.000 claims description 30
- 239000000460 chlorine Substances 0.000 claims description 27
- 229910052801 chlorine Inorganic materials 0.000 claims description 27
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 25
- 238000004061 bleaching Methods 0.000 claims description 24
- 238000005406 washing Methods 0.000 claims description 19
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 16
- 239000001913 cellulose Substances 0.000 claims description 15
- 229920002678 cellulose Polymers 0.000 claims description 15
- 239000003513 alkali Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 239000000047 product Substances 0.000 claims description 10
- 235000019270 ammonium chloride Nutrition 0.000 claims description 8
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000003643 water by type Substances 0.000 claims description 2
- 239000004480 active ingredient Substances 0.000 claims 1
- 150000001804 chlorine Chemical class 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 241000196324 Embryophyta Species 0.000 description 13
- 239000000243 solution Substances 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- 239000007858 starting material Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000008213 purified water Substances 0.000 description 3
- 239000002562 thickening agent Substances 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 239000005418 vegetable material Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000011221 initial treatment Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000612162 Maesa Species 0.000 description 1
- 241000183024 Populus tremula Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000021523 carboxylation Effects 0.000 description 1
- 238000006473 carboxylation reaction Methods 0.000 description 1
- OSVXSBDYLRYLIG-UHFFFAOYSA-N chlorine dioxide Inorganic materials O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007130 inorganic reaction Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2101937 | 1975-02-04 | ||
| SU752101937A SU591540A1 (ru) | 1975-02-04 | 1975-02-04 | Способ обработки целлюлозосодержащего материала |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI760266A7 FI760266A7 (enrdf_load_stackoverflow) | 1976-08-05 |
| FI65291B FI65291B (fi) | 1983-12-30 |
| FI65291C true FI65291C (fi) | 1984-04-10 |
Family
ID=20609073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI760266A FI65291C (fi) | 1975-02-04 | 1976-02-04 | Foerfarande foer blekning av ett cellulosahaltigt vegetablisktmaterial |
Country Status (6)
| Country | Link |
|---|---|
| CA (1) | CA1081907A (enrdf_load_stackoverflow) |
| DE (1) | DE2604107C3 (enrdf_load_stackoverflow) |
| FI (1) | FI65291C (enrdf_load_stackoverflow) |
| FR (1) | FR2300169A1 (enrdf_load_stackoverflow) |
| SE (1) | SE421937B (enrdf_load_stackoverflow) |
| SU (1) | SU591540A1 (enrdf_load_stackoverflow) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB601643A (en) * | 1945-04-13 | 1948-05-10 | Hercules Powder Co Ltd | Improvements in or relating to the bleaching of cellulose |
-
1975
- 1975-02-04 SU SU752101937A patent/SU591540A1/ru active
-
1976
- 1976-02-03 DE DE2604107A patent/DE2604107C3/de not_active Expired
- 1976-02-03 CA CA244,923A patent/CA1081907A/en not_active Expired
- 1976-02-03 SE SE7601147A patent/SE421937B/xx unknown
- 1976-02-04 FR FR7603099A patent/FR2300169A1/fr active Granted
- 1976-02-04 FI FI760266A patent/FI65291C/fi not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE421937B (sv) | 1982-02-08 |
| FI760266A7 (enrdf_load_stackoverflow) | 1976-08-05 |
| CA1081907A (en) | 1980-07-22 |
| DE2604107B2 (de) | 1978-11-23 |
| FR2300169B1 (enrdf_load_stackoverflow) | 1978-11-10 |
| SE7601147L (sv) | 1976-08-05 |
| DE2604107C3 (de) | 1979-07-26 |
| SU591540A1 (ru) | 1978-02-05 |
| DE2604107A1 (de) | 1976-08-05 |
| FR2300169A1 (fr) | 1976-09-03 |
| FI65291B (fi) | 1983-12-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed |
Owner name: UKRAINSKY NAUCHNO-ISSLEDOVATELSKY |