ATE153399T1 - Verfahren zum herstellen von natriumhydroxyd aus weisslauge - Google Patents
Verfahren zum herstellen von natriumhydroxyd aus weisslaugeInfo
- Publication number
- ATE153399T1 ATE153399T1 AT94850183T AT94850183T ATE153399T1 AT E153399 T1 ATE153399 T1 AT E153399T1 AT 94850183 T AT94850183 T AT 94850183T AT 94850183 T AT94850183 T AT 94850183T AT E153399 T1 ATE153399 T1 AT E153399T1
- Authority
- AT
- Austria
- Prior art keywords
- sodium hydroxide
- white liquor
- sodium
- liquor
- polysulfide
- Prior art date
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title abstract 15
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 abstract 4
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 229920001021 polysulfide Polymers 0.000 abstract 2
- 239000005077 polysulfide Substances 0.000 abstract 2
- 150000008117 polysulfides Polymers 0.000 abstract 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical compound [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 abstract 2
- 229910052979 sodium sulfide Inorganic materials 0.000 abstract 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 abstract 2
- 239000003054 catalyst Substances 0.000 abstract 1
- 238000000502 dialysis Methods 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 abstract 1
- 235000019345 sodium thiosulphate Nutrition 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0042—Fractionating or concentration of spent liquors by special methods
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/22—Alkali metal sulfides or polysulfides
- C01B17/34—Polysulfides of sodium or potassium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
- C01D1/28—Purification; Separation
- C01D1/38—Purification; Separation by dialysis
-
- 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
- D21C11/0057—Oxidation of liquors, e.g. in order to reduce the losses of sulfur compounds, followed by evaporation or combustion if the liquor in question is a black liquor
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Paper (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Detergent Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI934633A FI98538C (fi) | 1993-10-20 | 1993-10-20 | Menetelmä natriumhydroksidin valmistamiseksi valkolipeästä |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE153399T1 true ATE153399T1 (de) | 1997-06-15 |
Family
ID=8538809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT94850183T ATE153399T1 (de) | 1993-10-20 | 1994-10-20 | Verfahren zum herstellen von natriumhydroxyd aus weisslauge |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5843316A (de) |
| EP (1) | EP0649939B1 (de) |
| AT (1) | ATE153399T1 (de) |
| CA (1) | CA2118463C (de) |
| DE (1) | DE69403302T2 (de) |
| ES (1) | ES2102799T3 (de) |
| FI (1) | FI98538C (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE504737C2 (sv) * | 1995-07-04 | 1997-04-14 | Kvaerner Pulping Tech | Framställning av polysulfid genom oxidation av sulfid med grönlutsslam som katalysator |
| SE507033C2 (sv) * | 1995-07-04 | 1998-03-16 | Kvaerner Pulping Tech | Framställning av polysulfid genom oxidation av sulfid i grönlut |
| US5942084A (en) * | 1997-01-24 | 1999-08-24 | Pulp And Paper Research Institute Of Canada | Process for the separation of sulphides from pulping liquors using amphoteric resins |
| CN1298637C (zh) * | 2005-08-08 | 2007-02-07 | 南京工业大学 | 含色素废碱液中回收氢氧化钠的方法 |
| EP2842618A1 (de) * | 2013-09-02 | 2015-03-04 | VITO NV (Vlaamse Instelling voor Technologisch Onderzoek NV) | Vorrichtung und Verfahren zur Produktwiedergewinnung und elektrische Energieerzeugung |
| SE538784C2 (sv) * | 2015-04-09 | 2016-11-22 | Valmet Oy | Method for polysulfide production in a kraft pulp mill |
| FI128221B (fi) | 2015-04-27 | 2019-12-31 | Metsae Fibre Oy | Menetelmä polysulfidilipeän valmistamiseen käytetyn katalyytin regeneroimiseksi |
| JP7314050B2 (ja) | 2017-03-08 | 2023-07-25 | ホープ メディカル エンタープライズ インコーポレイテッド ディー．ビー．エー． ホープ ファーマシューティカルズ | 亜硝酸ナトリウムの透析中の使用 |
| IL312724A (en) * | 2017-03-08 | 2024-07-01 | Hope Medical Entpr Inc Dba Hope Pharmaceuticals | Intradialytic use of sodium thiosulfate |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4024229A (en) * | 1970-11-06 | 1977-05-17 | The Mead Corporation | Production of polysulfide with PTFE coated catalyst |
| JPS60112009A (ja) * | 1983-11-22 | 1985-06-18 | Asahi Optical Co Ltd | ズ−ムレンズのズ−ム駆動装置 |
| JPS60122009A (ja) * | 1983-12-06 | 1985-06-29 | Asahi Chem Ind Co Ltd | アルカリの透析方法 |
| CA1335976C (en) * | 1989-05-31 | 1995-06-20 | Mahmoud Kamran Azarniouch | Recovery of naoh and other values from spent liquors and bleach plant effluents |
| US5326433A (en) * | 1991-02-06 | 1994-07-05 | Ahlstrom Recovery Inc. | Multi-level sulfide content white liquor production and utilization in cellulose pulping |
| US5382322A (en) * | 1991-10-18 | 1995-01-17 | Air Products And Chemicals, Inc. | Selective white liquor oxidation |
| FI98537C (fi) * | 1993-10-20 | 1997-07-10 | Enso Gutzeit Oy | Menetelmä valkolipeässä olevan natriumhydroksidin erottamiseksi |
-
1993
- 1993-10-20 FI FI934633A patent/FI98538C/fi not_active IP Right Cessation
-
1994
- 1994-10-19 CA CA002118463A patent/CA2118463C/en not_active Expired - Fee Related
- 1994-10-20 ES ES94850183T patent/ES2102799T3/es not_active Expired - Lifetime
- 1994-10-20 EP EP94850183A patent/EP0649939B1/de not_active Expired - Lifetime
- 1994-10-20 AT AT94850183T patent/ATE153399T1/de not_active IP Right Cessation
- 1994-10-20 DE DE69403302T patent/DE69403302T2/de not_active Expired - Fee Related
-
1997
- 1997-02-25 US US08/805,588 patent/US5843316A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2118463C (en) | 2005-10-18 |
| FI934633A7 (fi) | 1995-04-21 |
| FI934633A0 (fi) | 1993-10-20 |
| US5843316A (en) | 1998-12-01 |
| FI98538B (fi) | 1997-03-27 |
| FI98538C (fi) | 1997-07-10 |
| DE69403302D1 (de) | 1997-06-26 |
| DE69403302T2 (de) | 1997-12-18 |
| EP0649939A1 (de) | 1995-04-26 |
| ES2102799T3 (es) | 1997-08-01 |
| CA2118463A1 (en) | 1995-04-21 |
| EP0649939B1 (de) | 1997-05-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| UEP | Publication of translation of european patent specification | ||
| REN | Ceased due to non-payment of the annual fee |