DE1228136B - Verfahren zum reduzierenden Bleichen von Holzschliff und anderen Papierfaserstoffen - Google Patents
Verfahren zum reduzierenden Bleichen von Holzschliff und anderen PapierfaserstoffenInfo
- Publication number
- DE1228136B DE1228136B DED40085A DED0040085A DE1228136B DE 1228136 B DE1228136 B DE 1228136B DE D40085 A DED40085 A DE D40085A DE D0040085 A DED0040085 A DE D0040085A DE 1228136 B DE1228136 B DE 1228136B
- Authority
- DE
- Germany
- Prior art keywords
- wood pulp
- sulfur dioxide
- boranate
- percent
- weight
- 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.)
- Pending
Links
- 229920001131 Pulp (paper) Polymers 0.000 title claims description 21
- 238000000034 method Methods 0.000 title claims description 21
- 239000000835 fiber Substances 0.000 title claims description 9
- 238000009895 reductive bleaching Methods 0.000 title claims description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 10
- 239000002023 wood Substances 0.000 claims description 7
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 239000012670 alkaline solution Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000004061 bleaching Methods 0.000 description 7
- 239000012279 sodium borohydride Substances 0.000 description 5
- 229910000033 sodium borohydride Inorganic materials 0.000 description 5
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000010893 paper waste Substances 0.000 description 4
- -1 peroxide compounds Chemical class 0.000 description 4
- 229940079827 sodium hydrogen sulfite Drugs 0.000 description 4
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007844 bleaching agent Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- AVAYCNNAMOJZHO-UHFFFAOYSA-N [Na+].[Na+].[O-]B[O-] Chemical compound [Na+].[Na+].[O-]B[O-] AVAYCNNAMOJZHO-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- CSABAZBYIWDIDE-UHFFFAOYSA-N sulfino hydrogen sulfite Chemical class OS(=O)OS(O)=O CSABAZBYIWDIDE-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 239000002562 thickening agent 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE638828D BE638828A (cs) | 1962-10-18 | ||
| DED40085A DE1228136B (de) | 1962-10-18 | 1962-10-18 | Verfahren zum reduzierenden Bleichen von Holzschliff und anderen Papierfaserstoffen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED40085A DE1228136B (de) | 1962-10-18 | 1962-10-18 | Verfahren zum reduzierenden Bleichen von Holzschliff und anderen Papierfaserstoffen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1228136B true DE1228136B (de) | 1966-11-03 |
Family
ID=7045166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DED40085A Pending DE1228136B (de) | 1962-10-18 | 1962-10-18 | Verfahren zum reduzierenden Bleichen von Holzschliff und anderen Papierfaserstoffen |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE638828A (cs) |
| DE (1) | DE1228136B (cs) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0027369A1 (en) * | 1979-10-12 | 1981-04-22 | Thiokol Corporation | Stable precursor solution for the generation of hydrosulfite and use thereof in bleaching wood pulp, brightening kaolin clay and reducing vat dyestuffs to their leuco form |
| US5562803A (en) * | 1992-06-18 | 1996-10-08 | Morton International, Inc. | Sequential bleaching of de-inked paper pulp with sodium bisulfite, dithionite and borohydride |
-
0
- BE BE638828D patent/BE638828A/xx unknown
-
1962
- 1962-10-18 DE DED40085A patent/DE1228136B/de active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0027369A1 (en) * | 1979-10-12 | 1981-04-22 | Thiokol Corporation | Stable precursor solution for the generation of hydrosulfite and use thereof in bleaching wood pulp, brightening kaolin clay and reducing vat dyestuffs to their leuco form |
| US5562803A (en) * | 1992-06-18 | 1996-10-08 | Morton International, Inc. | Sequential bleaching of de-inked paper pulp with sodium bisulfite, dithionite and borohydride |
Also Published As
| Publication number | Publication date |
|---|---|
| BE638828A (cs) |
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