JPS6220319B2 - - Google Patents
Info
- Publication number
- JPS6220319B2 JPS6220319B2 JP1202179A JP1202179A JPS6220319B2 JP S6220319 B2 JPS6220319 B2 JP S6220319B2 JP 1202179 A JP1202179 A JP 1202179A JP 1202179 A JP1202179 A JP 1202179A JP S6220319 B2 JPS6220319 B2 JP S6220319B2
- Authority
- JP
- Japan
- Prior art keywords
- silica
- slaked lime
- green liquor
- stage
- precipitate
- 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 140
- 239000000377 silicon dioxide Substances 0.000 claims description 70
- 238000000034 method Methods 0.000 claims description 42
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 36
- 239000000920 calcium hydroxide Substances 0.000 claims description 36
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 36
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 36
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 22
- 238000010411 cooking Methods 0.000 claims description 13
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- 239000002244 precipitate Substances 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 7
- 239000002655 kraft paper Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 238000009993 causticizing Methods 0.000 description 12
- 239000011734 sodium Substances 0.000 description 11
- 238000003756 stirring Methods 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000004537 pulping Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 241000609240 Ambelania acida Species 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000010905 bagasse Substances 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 244000273256 Phragmites communis Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Paper (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1202179A JPS55103387A (en) | 1979-02-05 | 1979-02-05 | Silica removal from pulp digesting liqur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1202179A JPS55103387A (en) | 1979-02-05 | 1979-02-05 | Silica removal from pulp digesting liqur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55103387A JPS55103387A (en) | 1980-08-07 |
| JPS6220319B2 true JPS6220319B2 (enrdf_load_stackoverflow) | 1987-05-06 |
Family
ID=11793936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1202179A Granted JPS55103387A (en) | 1979-02-05 | 1979-02-05 | Silica removal from pulp digesting liqur |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55103387A (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3208200A1 (de) * | 1982-03-06 | 1983-09-08 | Metallgesellschaft Ag, 6000 Frankfurt | Verfahren zur kontinuierlichen entfernung von kieselsaeure aus zellstoffablaugen |
| SE456254B (sv) * | 1987-02-12 | 1988-09-19 | Korsnes Ab | Sett att rena gronlut i sulfatmassafabrikers kemikalieatervinning |
| GB0325578D0 (en) * | 2003-11-03 | 2003-12-03 | Bioregional Minimills Uk Ltd | Method for treating black liquor |
-
1979
- 1979-02-05 JP JP1202179A patent/JPS55103387A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55103387A (en) | 1980-08-07 |
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