ES2102799T3 - Procedimiento para producir hidroxido de sodio a partir de lejia blanca. - Google Patents
Procedimiento para producir hidroxido de sodio a partir de lejia blanca.Info
- Publication number
- ES2102799T3 ES2102799T3 ES94850183T ES94850183T ES2102799T3 ES 2102799 T3 ES2102799 T3 ES 2102799T3 ES 94850183 T ES94850183 T ES 94850183T ES 94850183 T ES94850183 T ES 94850183T ES 2102799 T3 ES2102799 T3 ES 2102799T3
- Authority
- ES
- Spain
- Prior art keywords
- sodium hydroxide
- white liquor
- sodium
- liquor
- polysulfide
- 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
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title abstract 12
- 238000000034 method Methods 0.000 title abstract 5
- 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)
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
LA PRESENTE INVENCION SE REFIERE A UN METODO DE PROCESADO DE LIQUIDO BLANCO OBTENIDO A PARTIR DE LA ETAPA DE CAUSTICIZACION DE UN MOLINO DE PULPA. DE ACUERDO CON EL METODO, EL LIQUIDO BLANCO, QUE PRINCIPALMENTE SE COMPONE DE HIDROXIDO DE SODIO (6) Y DE SULFURO DE SODIO, ES OXIDADO EN LIQUIDO POLISULFURO (3), PARA LO CUAL EL SULFURO DE SODIO ES OXIDADO MAS VENTAJOSAMENTE CON LA AYUDA DE UN CATALIZADOR Y DE UN OXIDANTE TAL COMO AIRE, SUSTANCIALMENTE EN POLISULFURO DE SODIO (7) Y TIOSULFATO DE SODIO. EL METODO DE ACUERDO CON LA INVENCION ESTA CARACTERIZADO PORQUE EL HIDROXIDO DE SODIO (6) CONTENIDO EN EL LIQUIDO BLANCO ES SEPARADO DEL LIQUIDO BLANCO ANTES DE LA ETAPA DE OXIDACION O DEL LIQUIDO POLISULFURO (3) DESPUES DE LA ETAPA DE OXIDACION, YA SEA DEL TODO O PARCIALMENTE POR MEDIO DE UN PROCESO DE DIALISIS POR DIFUSION (4). ADEMAS LA INVENCION ESTA CARACTERIZADA PORQUE EL HIDROXIDO DE SODIO (6) SEPARADO DEL LIQUIDO BLANCO ES RETORNADO A LA CIRCULACION QUIMICA DEL MOLINO DE PULPA.
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 |
---|---|
ES2102799T3 true ES2102799T3 (es) | 1997-08-01 |
Family
ID=8538809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES94850183T Expired - Lifetime ES2102799T3 (es) | 1993-10-20 | 1994-10-20 | Procedimiento para producir hidroxido de sodio a partir de lejia blanca. |
Country Status (7)
Country | Link |
---|---|
US (1) | US5843316A (es) |
EP (1) | EP0649939B1 (es) |
AT (1) | ATE153399T1 (es) |
CA (1) | CA2118463C (es) |
DE (1) | DE69403302T2 (es) |
ES (1) | ES2102799T3 (es) |
FI (1) | FI98538C (es) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE507033C2 (sv) * | 1995-07-04 | 1998-03-16 | Kvaerner Pulping Tech | Framställning av polysulfid genom oxidation av sulfid i grönlut |
SE504737C2 (sv) * | 1995-07-04 | 1997-04-14 | Kvaerner Pulping Tech | Framställning av polysulfid genom oxidation av sulfid med grönlutsslam som katalysator |
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 (en) * | 2013-09-02 | 2015-03-04 | VITO NV (Vlaamse Instelling voor Technologisch Onderzoek NV) | Apparatus and method for product recovery and electrical energy generation |
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 |
JP7416622B2 (ja) * | 2017-03-08 | 2024-01-17 | 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 | チオ硫酸ナトリウムの透析中の使用 |
CA3055105A1 (en) | 2017-03-08 | 2018-09-13 | Hope Medical Enterprises, Inc. Dba Hope Pharmaceuticals | Intradialytic use of sodium nitrite |
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 AT AT94850183T patent/ATE153399T1/de not_active IP Right Cessation
- 1994-10-20 ES ES94850183T patent/ES2102799T3/es not_active Expired - Lifetime
- 1994-10-20 EP EP94850183A patent/EP0649939B1/en not_active Expired - Lifetime
- 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 |
---|---|
EP0649939B1 (en) | 1997-05-21 |
EP0649939A1 (en) | 1995-04-26 |
FI98538B (fi) | 1997-03-27 |
CA2118463A1 (en) | 1995-04-21 |
FI934633A (fi) | 1995-04-21 |
ATE153399T1 (de) | 1997-06-15 |
US5843316A (en) | 1998-12-01 |
FI934633A0 (fi) | 1993-10-20 |
CA2118463C (en) | 2005-10-18 |
DE69403302D1 (de) | 1997-06-26 |
DE69403302T2 (de) | 1997-12-18 |
FI98538C (fi) | 1997-07-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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