ATE288967T1 - METHOD FOR TREATING THE WASTE FROM ALKALINE DISCLOSURE IN THE PAPER PRODUCTION PROCESS AND THE PRODUCT PRODUCED IN THIS WAY - Google Patents
METHOD FOR TREATING THE WASTE FROM ALKALINE DISCLOSURE IN THE PAPER PRODUCTION PROCESS AND THE PRODUCT PRODUCED IN THIS WAYInfo
- Publication number
- ATE288967T1 ATE288967T1 AT97927900T AT97927900T ATE288967T1 AT E288967 T1 ATE288967 T1 AT E288967T1 AT 97927900 T AT97927900 T AT 97927900T AT 97927900 T AT97927900 T AT 97927900T AT E288967 T1 ATE288967 T1 AT E288967T1
- Authority
- AT
- Austria
- Prior art keywords
- alkaline
- waste
- treating
- disclosure
- way
- Prior art date
Links
Abstract
A water soluble, surface active, polymeric agent is mixed with digestion liquor, preferably with an additional surface active defoamer coagulant agent prior to or during acidification of the alkaline digestive liquor. This results in an easily separable, non-gelatinous, non-gummy, coagulated lignin as a solids, particulate fraction that tends to float on a clarified liquid fraction containing recoverable salts. The solids fraction and the liquid frictions are easily separated, one from the other, by a gravity separation step.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1997/009418 WO1998054400A1 (en) | 1993-08-20 | 1997-05-29 | Process for treating spent, waste, alkaline digestion liquor from paper pulping operations and product |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE288967T1 true ATE288967T1 (en) | 2005-02-15 |
Family
ID=22261000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT97927900T ATE288967T1 (en) | 1997-05-29 | 1997-05-29 | METHOD FOR TREATING THE WASTE FROM ALKALINE DISCLOSURE IN THE PAPER PRODUCTION PROCESS AND THE PRODUCT PRODUCED IN THIS WAY |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP2002500707A (en) |
AT (1) | ATE288967T1 (en) |
AU (1) | AU3224797A (en) |
CA (1) | CA2291722C (en) |
DE (1) | DE69732499D1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4670011B2 (en) * | 2005-10-18 | 2011-04-13 | 独立行政法人産業技術総合研究所 | Lignin-containing resin, method for producing the same, and method for separating lignin |
WO2011162420A1 (en) * | 2010-06-25 | 2011-12-29 | ロペスアンドエヌティ有限会社 | Method for recovering lignin in the neutral range from spent pulp cooking liquor |
-
1997
- 1997-05-29 AT AT97927900T patent/ATE288967T1/en not_active IP Right Cessation
- 1997-05-29 AU AU32247/97A patent/AU3224797A/en not_active Abandoned
- 1997-05-29 JP JP50061699A patent/JP2002500707A/en active Pending
- 1997-05-29 CA CA002291722A patent/CA2291722C/en not_active Expired - Fee Related
- 1997-05-29 DE DE69732499T patent/DE69732499D1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2291722A1 (en) | 1998-12-03 |
DE69732499D1 (en) | 2005-03-17 |
JP2002500707A (en) | 2002-01-08 |
CA2291722C (en) | 2006-06-13 |
AU3224797A (en) | 1998-12-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |