JPH0114358B2 - - Google Patents
Info
- Publication number
- JPH0114358B2 JPH0114358B2 JP56196181A JP19618181A JPH0114358B2 JP H0114358 B2 JPH0114358 B2 JP H0114358B2 JP 56196181 A JP56196181 A JP 56196181A JP 19618181 A JP19618181 A JP 19618181A JP H0114358 B2 JPH0114358 B2 JP H0114358B2
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- added
- alkali
- per
- resin
- 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.)
- Expired
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 123
- 239000011347 resin Substances 0.000 claims description 58
- 229920005989 resin Polymers 0.000 claims description 58
- 238000000034 method Methods 0.000 claims description 46
- 239000000126 substance Substances 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000003513 alkali Substances 0.000 claims description 29
- 238000011282 treatment Methods 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 22
- 239000007844 bleaching agent Substances 0.000 claims description 20
- 229920002678 cellulose Polymers 0.000 claims description 18
- 239000001913 cellulose Substances 0.000 claims description 18
- 230000001590 oxidative effect Effects 0.000 claims description 16
- 238000004061 bleaching Methods 0.000 claims description 11
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 239000012978 lignocellulosic material Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 description 29
- 238000007792 addition Methods 0.000 description 23
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 23
- 239000002023 wood Substances 0.000 description 19
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 18
- 239000004155 Chlorine dioxide Substances 0.000 description 12
- 235000019398 chlorine dioxide Nutrition 0.000 description 12
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 11
- 238000012545 processing Methods 0.000 description 11
- 239000007864 aqueous solution Substances 0.000 description 10
- 238000010411 cooking Methods 0.000 description 10
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 9
- 238000005406 washing Methods 0.000 description 9
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- 210000000988 bone and bone Anatomy 0.000 description 8
- 238000004898 kneading Methods 0.000 description 8
- 239000002655 kraft paper Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000000460 chlorine Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 238000010008 shearing Methods 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 235000018185 Betula X alpestris Nutrition 0.000 description 5
- 235000018212 Betula X uliginosa Nutrition 0.000 description 5
- 241000218657 Picea Species 0.000 description 5
- 229920001131 Pulp (paper) Polymers 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000012632 extractable Substances 0.000 description 5
- 239000000123 paper Substances 0.000 description 5
- 239000005708 Sodium hypochlorite Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- 150000002978 peroxides Chemical class 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910001902 chlorine oxide Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 241001233195 Eucalyptus grandis Species 0.000 description 1
- 240000006361 Eucalyptus saligna Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000009896 oxidative bleaching Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002699 waste material Substances 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
- D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
Landscapes
- 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 |
|---|---|---|---|
| SE8008574A SE424884B (sv) | 1980-12-05 | 1980-12-05 | Forfarande for hartshaltsminskning vid framstellning av cellulosamassor ur lignocellulosamaterial |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57121692A JPS57121692A (en) | 1982-07-29 |
| JPH0114358B2 true JPH0114358B2 (fi) | 1989-03-10 |
Family
ID=20342404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56196181A Granted JPS57121692A (en) | 1980-12-05 | 1981-12-04 | Reduction of resin content in producing cellulose pulp from lignocellulose material |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS57121692A (fi) |
| AU (1) | AU529326B2 (fi) |
| CA (1) | CA1162358A (fi) |
| CH (1) | CH655965A5 (fi) |
| DE (1) | DE3148101C2 (fi) |
| FI (1) | FI69657C (fi) |
| NO (1) | NO156905C (fi) |
| SE (1) | SE424884B (fi) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5930980A (ja) * | 1982-08-12 | 1984-02-18 | 王子製紙株式会社 | リグノセルロ−ス物質の漂白方法 |
| SE502321C2 (sv) * | 1994-03-04 | 1995-10-02 | Kvaerner Pulping Tech | Förfarande vid ozonblekning av sulfitmassa |
| FI20070126A0 (fi) | 2006-09-08 | 2007-02-13 | Linde Ag | Menetelmä hartsin poistamiseksi massasta ja hiilidioksidin tai (bi)karbonaatin käyttö tähän tarkoitukseen |
-
1980
- 1980-12-05 SE SE8008574A patent/SE424884B/sv not_active IP Right Cessation
-
1981
- 1981-11-25 AU AU77888/81A patent/AU529326B2/en not_active Ceased
- 1981-12-04 JP JP56196181A patent/JPS57121692A/ja active Granted
- 1981-12-04 CH CH7774/81A patent/CH655965A5/de not_active IP Right Cessation
- 1981-12-04 DE DE3148101A patent/DE3148101C2/de not_active Expired
- 1981-12-04 NO NO814163A patent/NO156905C/no not_active IP Right Cessation
- 1981-12-04 FI FI813896A patent/FI69657C/fi not_active IP Right Cessation
- 1981-12-07 CA CA000391674A patent/CA1162358A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FI69657B (fi) | 1985-11-29 |
| AU529326B2 (en) | 1983-06-02 |
| NO814163L (no) | 1982-06-07 |
| AU7788881A (en) | 1982-06-17 |
| NO156905B (no) | 1987-09-07 |
| DE3148101C2 (de) | 1985-11-07 |
| NO156905C (no) | 1987-12-16 |
| SE424884B (sv) | 1982-08-16 |
| FI69657C (fi) | 1990-10-31 |
| FI813896L (fi) | 1982-06-06 |
| DE3148101A1 (de) | 1982-08-12 |
| SE8008574L (sv) | 1982-06-06 |
| CH655965A5 (de) | 1986-05-30 |
| JPS57121692A (en) | 1982-07-29 |
| CA1162358A (en) | 1984-02-21 |
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