SE436429B - Forfarande for framstellning av cellulosa, innehallande over 90 vikt-% alfa-cellulosa - Google Patents
Forfarande for framstellning av cellulosa, innehallande over 90 vikt-% alfa-cellulosaInfo
- Publication number
- SE436429B SE436429B SE7806815A SE7806815A SE436429B SE 436429 B SE436429 B SE 436429B SE 7806815 A SE7806815 A SE 7806815A SE 7806815 A SE7806815 A SE 7806815A SE 436429 B SE436429 B SE 436429B
- Authority
- SE
- Sweden
- Prior art keywords
- weight
- alkali
- temperature
- cellulosa
- content
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 17
- 239000003513 alkali Substances 0.000 claims description 16
- 238000004061 bleaching Methods 0.000 claims description 16
- 239000002023 wood Substances 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 8
- 229910052801 chlorine Inorganic materials 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 7
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 6
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 6
- 229920002488 Hemicellulose Polymers 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 239000004155 Chlorine dioxide Substances 0.000 claims description 3
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000007844 bleaching agent Substances 0.000 claims description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims 1
- 235000009470 Theobroma cacao Nutrition 0.000 claims 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims 1
- 244000240602 cacao Species 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000010411 cooking Methods 0.000 description 15
- 230000035484 reaction time Effects 0.000 description 14
- 229920000297 Rayon Polymers 0.000 description 6
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 241000428352 Amma Species 0.000 description 2
- 101100298295 Drosophila melanogaster flfl gene Proteins 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 101100348017 Drosophila melanogaster Nazo gene Proteins 0.000 description 1
- 229910004742 Na2 O Inorganic materials 0.000 description 1
- 101100457407 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) mmm-1 gene Proteins 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229930013930 alkaloid Natural products 0.000 description 1
- 150000003797 alkaloid derivatives Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000019589 hardness Nutrition 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000019587 texture Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI772042A FI54941C (fi) | 1977-06-30 | 1977-06-30 | Foerfarande foer framstaellning av cellulosa innehaollande oever 90 vikt-% alfa-cellulosa genom sulfatprocess |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7806815L SE7806815L (sv) | 1978-12-31 |
| SE436429B true SE436429B (sv) | 1984-12-10 |
Family
ID=8510942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7806815A SE436429B (sv) | 1977-06-30 | 1978-06-13 | Forfarande for framstellning av cellulosa, innehallande over 90 vikt-% alfa-cellulosa |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5415001A (cs) |
| BR (1) | BR7804169A (cs) |
| CS (1) | CS213345B2 (cs) |
| FI (1) | FI54941C (cs) |
| NO (1) | NO151475C (cs) |
| PL (1) | PL112256B1 (cs) |
| SE (1) | SE436429B (cs) |
-
1977
- 1977-06-30 FI FI772042A patent/FI54941C/fi not_active IP Right Cessation
-
1978
- 1978-06-13 SE SE7806815A patent/SE436429B/sv not_active IP Right Cessation
- 1978-06-27 CS CS784215A patent/CS213345B2/cs unknown
- 1978-06-28 JP JP7846778A patent/JPS5415001A/ja active Pending
- 1978-06-29 BR BR7804169A patent/BR7804169A/pt unknown
- 1978-06-29 PL PL1978208012A patent/PL112256B1/pl unknown
- 1978-06-29 NO NO782250A patent/NO151475C/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FI54941B (fi) | 1978-12-29 |
| CS213345B2 (cs) | 1982-04-09 |
| FI54941C (fi) | 1979-04-10 |
| PL208012A1 (pl) | 1979-03-12 |
| NO151475C (no) | 1985-04-17 |
| JPS5415001A (en) | 1979-02-03 |
| NO151475B (no) | 1985-01-02 |
| PL112256B1 (en) | 1980-10-31 |
| NO782250L (no) | 1979-01-03 |
| SE7806815L (sv) | 1978-12-31 |
| BR7804169A (pt) | 1979-02-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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