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
sodium
white liquid
liquid
stage
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
Application number
ES94850183T
Other languages
English (en)
Inventor
Hannu Kurittu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stora Enso Oyj
Original Assignee
Enso Gutzeit Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Enso Gutzeit Oy filed Critical Enso Gutzeit Oy
Application granted granted Critical
Publication of ES2102799T3 publication Critical patent/ES2102799T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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)

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.
ES94850183T 1993-10-20 1994-10-20 Procedimiento para producir hidroxido de sodio a partir de lejia blanca. Expired - Lifetime ES2102799T3 (es)

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)

* Cited by examiner, † Cited by third party
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 (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
IL268883B (en) * 2017-03-08 2022-09-01 Hope Medical Entpr Inc Dba Hope Pharmaceuticals Intradialytic use of sodium thiosulfate
NZ797740A (en) 2017-03-08 2026-02-27 Hope Medical Entpr Inc Dba Hope Pharmaceuticals Intradialytic use of sodium nitrite

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FI98538C (fi) 1997-07-10
CA2118463C (en) 2005-10-18
FI934633A0 (fi) 1993-10-20
ATE153399T1 (de) 1997-06-15
US5843316A (en) 1998-12-01
FI934633A7 (fi) 1995-04-21
DE69403302T2 (de) 1997-12-18
CA2118463A1 (en) 1995-04-21
EP0649939A1 (en) 1995-04-26
EP0649939B1 (en) 1997-05-21
DE69403302D1 (de) 1997-06-26
FI98538B (fi) 1997-03-27

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