EP0693145B1 - Verfahren zur umwandlung von natriumsulfat - Google Patents
Verfahren zur umwandlung von natriumsulfat Download PDFInfo
- Publication number
- EP0693145B1 EP0693145B1 EP94912988A EP94912988A EP0693145B1 EP 0693145 B1 EP0693145 B1 EP 0693145B1 EP 94912988 A EP94912988 A EP 94912988A EP 94912988 A EP94912988 A EP 94912988A EP 0693145 B1 EP0693145 B1 EP 0693145B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquor
- sodium
- stage
- waste
- wash
- 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 - Lifetime
Links
Images
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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/12—Combustion of pulp liquors
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
- D21C11/0071—Treatment of green or white liquors with gases, e.g. with carbon dioxide for carbonation; Expulsion of gaseous compounds, e.g. hydrogen sulfide, from these liquors by this treatment (stripping); Optional separation of solid compounds formed in the liquors by this treatment
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
- D21C11/063—Treatment of gas streams comprising solid matter, e.g. the ashes resulting from the combustion of black liquor
- D21C11/066—Separation of solid compounds from these gases; further treatment of recovered products
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/12—Combustion of pulp liquors
- D21C11/125—Decomposition of the pulp liquors in reducing atmosphere or in the absence of oxidants, i.e. gasification or pyrolysis
- D21C11/127—Decomposition of the pulp liquors in reducing atmosphere or in the absence of oxidants, i.e. gasification or pyrolysis with post-combustion of the gases
Definitions
- EP-B1 223 821 discloses a pyrolysis process for the waste liquor, in which a part of the combustible components formed during the pyrolysis are burned and the inorganic residues are obtained in the molten state and are quenched. Here, too, the solid residues from exhaust gas cleaning are not introduced into the melt.
- a sensible procedure for the H 2 S stripping makes it necessary to divide the H 2 S stripping 11 into several apparatuses (FIG. 2). Since sodium carbonate is formed in the relevant stripping step due to the two simultaneous desorption reactions, it is therefore necessary to carry out an intermediate fortification with C0 2 after each stripping step in order to transfer the carbonate back to the bicarbonate and thus to increase the H 2 S partial pressure that determines the mass transport.
- the two desorption reactions with H 2 S and CO 2 are as follows: 1.2NaHS + CO 2nd + H 2nd O ⁇ Well 2nd CO 3rd + H 2nd S 2. 2NaHCO 3rd ⁇ Well 2nd CO 3rd + CO 2nd + H 2nd O 3. NaHCO 3rd + NaHS ⁇ well 2nd CO 3rd + H 2nd S
Landscapes
- Treating Waste Gases (AREA)
- Paper (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT682/93 | 1993-04-05 | ||
AT0068293A AT398992B (de) | 1993-04-05 | 1993-04-05 | Verfahren zur umwandlung von natriumsulfat |
PCT/AT1994/000038 WO1994023124A1 (de) | 1993-04-05 | 1994-03-31 | Verfahren zur umwandlung von natriumsulfat |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0693145A1 EP0693145A1 (de) | 1996-01-24 |
EP0693145B1 true EP0693145B1 (de) | 1997-09-17 |
Family
ID=3497044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94912988A Expired - Lifetime EP0693145B1 (de) | 1993-04-05 | 1994-03-31 | Verfahren zur umwandlung von natriumsulfat |
Country Status (8)
Country | Link |
---|---|
US (1) | US5759345A (fi) |
EP (1) | EP0693145B1 (fi) |
AT (1) | AT398992B (fi) |
AU (1) | AU6532294A (fi) |
CA (1) | CA2160008C (fi) |
DE (1) | DE59404103D1 (fi) |
FI (1) | FI954695A0 (fi) |
WO (1) | WO1994023124A1 (fi) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007036380A1 (de) * | 2007-07-31 | 2009-02-05 | Voith Patent Gmbh | Verfahren und Anlage zur Aufbereitung der Ablauge eines Sulfitverfahrens |
FI125337B (fi) * | 2010-10-18 | 2015-08-31 | Andritz Oy | Menetelmä ja järjestely epäpuhtauksien erottamiseksi nesteistä tai höyryistä |
CN102874769B (zh) * | 2012-10-09 | 2014-07-02 | 广西大学 | 碱熔物中硫化钠的氧化转化方法及装置 |
CN109233884A (zh) * | 2018-10-17 | 2019-01-18 | 四川锐源能环科技有限公司 | 一种液态危险废物处理*** |
US10888818B2 (en) * | 2019-01-15 | 2021-01-12 | Honeywell International Inc. | Integrated mercaptan extraction and/or sweetening processes combined with thermal oxidation and flue gas treatment |
CN111717897A (zh) * | 2019-03-19 | 2020-09-29 | 萍乡市华星环保工程技术有限公司 | 一种采用硫泡沫制酸的方法 |
CN115401054B (zh) * | 2022-09-16 | 2023-04-07 | 贵州中蓝环保科技有限公司 | 一种无害化处理电解锰渣的方法 |
CN115716078A (zh) * | 2022-10-17 | 2023-02-28 | 北京中科国润环保科技有限公司 | 二氧化碳资源化利用的方法和*** |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3366535A (en) * | 1966-07-11 | 1968-01-30 | William T Neiman | Process for regenerating waste liquor for reuse in kraft pulping operation |
US3826710A (en) * | 1972-04-21 | 1974-07-30 | Owens Illinois Inc | Carbonation system for recovery of sodium base pulping liquor |
US4148684A (en) * | 1976-11-08 | 1979-04-10 | Mei Systems Inc. | Methods for recovery and recycling of chemicals from sodium sulfite and sodium bisulfite pulping operations |
AT351359B (de) * | 1977-06-08 | 1979-07-25 | Erco Envirotech Ltd | Verfahren zur entfernung des natriumchlorids bei der herstellung von zellstoff |
SE448173B (sv) * | 1985-06-03 | 1987-01-26 | Croon Inventor Ab | Forfarande for utvinning av kemikalier fran cellulosaavlut genom pyrolys |
SE456254B (sv) * | 1987-02-12 | 1988-09-19 | Korsnes Ab | Sett att rena gronlut i sulfatmassafabrikers kemikalieatervinning |
AT398440B (de) * | 1991-10-25 | 1994-12-27 | Waagner Biro Ag | Verfahren zur rückgewinnung der chemikalien der kochlauge |
JP3447112B2 (ja) * | 1994-05-23 | 2003-09-16 | アルインコ株式会社 | 作業台の伸縮脚 |
-
1993
- 1993-04-05 AT AT0068293A patent/AT398992B/de not_active IP Right Cessation
-
1994
- 1994-03-31 WO PCT/AT1994/000038 patent/WO1994023124A1/de active IP Right Grant
- 1994-03-31 CA CA002160008A patent/CA2160008C/en not_active Expired - Fee Related
- 1994-03-31 EP EP94912988A patent/EP0693145B1/de not_active Expired - Lifetime
- 1994-03-31 US US08/549,727 patent/US5759345A/en not_active Expired - Fee Related
- 1994-03-31 AU AU65322/94A patent/AU6532294A/en not_active Abandoned
- 1994-03-31 DE DE59404103T patent/DE59404103D1/de not_active Expired - Fee Related
-
1995
- 1995-10-03 FI FI954695A patent/FI954695A0/fi unknown
Also Published As
Publication number | Publication date |
---|---|
AU6532294A (en) | 1994-10-24 |
CA2160008C (en) | 2001-06-12 |
DE59404103D1 (de) | 1997-10-23 |
AT398992B (de) | 1995-02-27 |
WO1994023124A1 (de) | 1994-10-13 |
US5759345A (en) | 1998-06-02 |
FI954695A (fi) | 1995-10-03 |
EP0693145A1 (de) | 1996-01-24 |
FI954695A0 (fi) | 1995-10-03 |
CA2160008A1 (en) | 1994-10-13 |
ATA68293A (de) | 1994-07-15 |
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