CS199637B2 - Způsob výroby chemické buničiny - Google Patents
Způsob výroby chemické buničiny Download PDFInfo
- Publication number
- CS199637B2 CS199637B2 CS765512A CS551276A CS199637B2 CS 199637 B2 CS199637 B2 CS 199637B2 CS 765512 A CS765512 A CS 765512A CS 551276 A CS551276 A CS 551276A CS 199637 B2 CS199637 B2 CS 199637B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- pulp
- treatment
- alkaline
- white liquor
- bleaching
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229920000875 Dissolving pulp Polymers 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 41
- 238000011282 treatment Methods 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 25
- 229920002488 Hemicellulose Polymers 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 11
- 239000002655 kraft paper Substances 0.000 claims description 9
- 229920001131 Pulp (paper) Polymers 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 6
- 239000012670 alkaline solution Substances 0.000 claims description 5
- 230000007062 hydrolysis Effects 0.000 claims description 5
- 238000006460 hydrolysis reaction Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 2
- 238000004061 bleaching Methods 0.000 description 20
- 229920000297 Rayon Polymers 0.000 description 12
- 238000010411 cooking Methods 0.000 description 8
- 239000003518 caustics Substances 0.000 description 7
- 229920002678 cellulose Polymers 0.000 description 7
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 7
- 235000010980 cellulose Nutrition 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000004155 Chlorine dioxide Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 235000019398 chlorine dioxide Nutrition 0.000 description 4
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 2
- 229920003086 cellulose ether Polymers 0.000 description 2
- 238000012993 chemical processing Methods 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000021962 pH elevation Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- NCGICGYLBXGBGN-UHFFFAOYSA-N 3-morpholin-4-yl-1-oxa-3-azonia-2-azanidacyclopent-3-en-5-imine;hydrochloride Chemical compound Cl.[N-]1OC(=N)C=[N+]1N1CCOCC1 NCGICGYLBXGBGN-UHFFFAOYSA-N 0.000 description 1
- 241000272814 Anser sp. Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000003113 alkalizing effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000005517 mercerization Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005486 sulfidation Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 230000002087 whitening effect Effects 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
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI752400A FI52230C (fi) | 1975-08-26 | 1975-08-26 | Menetelmä liukosellun valmistamiseksi. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS199637B2 true CS199637B2 (cs) | 1980-07-31 |
Family
ID=8509397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS765512A CS199637B2 (cs) | 1975-08-26 | 1976-08-25 | Způsob výroby chemické buničiny |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5227802A (en)) |
| CS (1) | CS199637B2 (en)) |
| DD (1) | DD127342A5 (en)) |
| FI (1) | FI52230C (en)) |
| NO (1) | NO762919L (en)) |
| PL (1) | PL110637B1 (en)) |
| RO (1) | RO69645A (en)) |
| SE (1) | SE7607879L (en)) |
| YU (1) | YU177976A (en)) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2986137B2 (ja) * | 1992-07-27 | 1999-12-06 | アールストロム マシナリイ オサケ ユキチュア | 緑液結晶化 |
-
1975
- 1975-08-26 FI FI752400A patent/FI52230C/fi not_active IP Right Cessation
-
1976
- 1976-07-09 SE SE7607879A patent/SE7607879L/xx unknown
- 1976-07-19 YU YU01779/76A patent/YU177976A/xx unknown
- 1976-08-19 RO RO7687334A patent/RO69645A/ro unknown
- 1976-08-23 DD DD194439A patent/DD127342A5/xx unknown
- 1976-08-25 CS CS765512A patent/CS199637B2/cs unknown
- 1976-08-25 NO NO762919A patent/NO762919L/no unknown
- 1976-08-25 PL PL1976192002A patent/PL110637B1/pl unknown
- 1976-08-26 JP JP51102176A patent/JPS5227802A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5227802A (en) | 1977-03-02 |
| FI52230C (fi) | 1977-07-11 |
| NO762919L (en)) | 1977-03-01 |
| DD127342A5 (en)) | 1977-09-21 |
| PL110637B1 (en) | 1980-07-31 |
| YU177976A (en) | 1982-05-31 |
| RO69645A (ro) | 1980-08-15 |
| SE7607879L (sv) | 1977-02-27 |
| FI52230B (en)) | 1977-03-31 |
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