ES2085169T3 - Reduccion de cloruros en sistemas de recuperacion de pasta papelera quimica. - Google Patents

Reduccion de cloruros en sistemas de recuperacion de pasta papelera quimica.

Info

Publication number
ES2085169T3
ES2085169T3 ES93919759T ES93919759T ES2085169T3 ES 2085169 T3 ES2085169 T3 ES 2085169T3 ES 93919759 T ES93919759 T ES 93919759T ES 93919759 T ES93919759 T ES 93919759T ES 2085169 T3 ES2085169 T3 ES 2085169T3
Authority
ES
Spain
Prior art keywords
content
reduce
recovery systems
electrolysis
chemical paper
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
ES93919759T
Other languages
English (en)
Inventor
Hans Lindberg
Birgitta Sundblad
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.)
Nouryon Pulp and Performance Chemicals AB
Original Assignee
Eka Nobel AB
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 Eka Nobel AB filed Critical Eka Nobel AB
Application granted granted Critical
Publication of ES2085169T3 publication Critical patent/ES2085169T3/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
    • D21C11/04—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
    • 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

Landscapes

  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Paper (AREA)
  • Processing Of Solid Wastes (AREA)
  • Removal Of Specific Substances (AREA)
  • Treating Waste Gases (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

LA PRESENTE INVENCION SE REFIERE A UN PROCESO QUE RESPECTA EL MEDIOAMBIENTE PARA REDUCIR EL CONTENIDO DE CLORURO EN UN INVENTARIO LIQUIDO DE UN MOLINO DE PULPA QUIMICA. DE ACUERDO CON LA INVENCION, EN UN SISTEMA DE RECUPERACION PARA PRODUCTOS QUIMICOS DE PULPACION QUE CONTIENEN AZUFRE Y UN METAL ALCALI, SE RECOGE POLVO PRECIPITADOR FORMADO EN LA CALDERA DE RECUPERACION Y RETIRADO, DISUELTO EN AGUA Y ELECTROLIZADO PARA LA PRODUCCION DE CLORO O ACIDO CLORHIDRICO EN EL PRODUCTO DE ANALISIS. YA QUE EL POLVO CONTIENE NORMALMENTE UNA GRAN CANTIDAD DE SULFATO DE SODIO, ACIDO SULFURICO E HIDROXIDO DE SODIO PUEDE TAMBIEN SER PRODUCIDA EN LA ELECTROLISIS. PARA REDUCIR EL CONTENIDO DE IMPUREZAS, ANTES DE LA ELECTROLISIS, EL PH DE LA SOLUCION ACUOSA SE AJUSTA APROXIMADAMENTE POR ENCIMA DE 10 PARA PRECIPITAR SUSTANCIAS INORGANICAS QUE SE SEPARAN JUNTAS CON SUSTANCIAS FLOCULADAS O NO DISUELTAS.
ES93919759T 1992-08-24 1993-08-18 Reduccion de cloruros en sistemas de recuperacion de pasta papelera quimica. Expired - Lifetime ES2085169T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9202419A SE9202419D0 (sv) 1992-08-24 1992-08-24 Reduction of chloride in pulping chemical recovery systems

Publications (1)

Publication Number Publication Date
ES2085169T3 true ES2085169T3 (es) 1996-05-16

Family

ID=20386990

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93919759T Expired - Lifetime ES2085169T3 (es) 1992-08-24 1993-08-18 Reduccion de cloruros en sistemas de recuperacion de pasta papelera quimica.

Country Status (16)

Country Link
US (1) US5628874A (es)
EP (1) EP0656083B1 (es)
JP (1) JP2630507B2 (es)
AT (1) ATE136074T1 (es)
AU (1) AU671487B2 (es)
BR (1) BR9306916A (es)
CA (1) CA2142616C (es)
CZ (1) CZ283622B6 (es)
DE (1) DE69302019T2 (es)
ES (1) ES2085169T3 (es)
FI (1) FI108550B (es)
NZ (1) NZ255620A (es)
PL (1) PL307585A1 (es)
RU (1) RU2095504C1 (es)
SE (1) SE9202419D0 (es)
WO (1) WO1994004747A1 (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5961803A (en) * 1995-07-12 1999-10-05 Eka Chemicals Ab Leaching process
SE9502583D0 (sv) * 1995-07-12 1995-07-12 Eka Chemicals Ab Leaching process
SE9700012D0 (sv) * 1997-01-03 1997-01-03 Eka Chemicals Ab Recovery process in a pulp mill
US5980717A (en) * 1997-01-03 1999-11-09 Eka Chemical Ab Recovery process in a pulp mill
JP3811674B2 (ja) 2002-11-05 2006-08-23 日本錬水株式会社 クラフトパルプの製造方法
FI116074B3 (fi) * 2003-04-03 2014-06-23 Kemira Oyj Rikin kierrätys sulfaattiselluprosessissa
FI126767B (en) * 2012-11-16 2017-05-15 Andritz Oy Method for extracting the ash from a recovery boiler
FI129103B (fi) * 2017-04-28 2021-07-15 Andritz Oy Menetelmä soodakattilan lentotuhkan käsittelemiseksi
US12390791B2 (en) 2022-04-08 2025-08-19 Knauf Gips Kg Desalination of high chloride salt absorbed porous beads

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA923657A (en) * 1969-08-07 1973-04-03 Iwahashi Koji Process for recovering pulp cooking agents
US3833462A (en) * 1971-03-15 1974-09-03 Mac Millan Bloedel Ltd Process of removing sodium chloride from kraft pulping process chemical recovery systems
JPS5510716B2 (es) * 1971-11-02 1980-03-18
US3954579A (en) * 1973-11-01 1976-05-04 Hooker Chemicals & Plastics Corporation Electrolytic method for the simultaneous manufacture of concentrated and dilute aqueous hydroxide solutions
US4000034A (en) * 1975-08-15 1976-12-28 Hooker Chemicals & Plastics Corporation Kraft mill recovery system
US4076611A (en) * 1976-04-19 1978-02-28 Olin Corporation Electrode with lanthanum-containing perovskite surface
US4277447A (en) * 1979-08-20 1981-07-07 Olin Corporation Process for reducing calcium ion concentrations in alkaline alkali metal chloride brines
US4417961A (en) * 1981-03-30 1983-11-29 The Dow Chemical Company Membrane cell brine feed
US4391680A (en) * 1981-12-03 1983-07-05 Allied Corporation Preparing alkali metal hydroxide by water splitting and hydrolysis
US5139632A (en) * 1985-05-03 1992-08-18 Allied-Signal Inc. Recovery of mixed acids from mixed salts
SE500660C2 (sv) * 1992-12-03 1994-08-01 Mo Och Domsjoe Ab Förfarande för framställning av grönlut vid kemikalieåtervinning i sulfat- och sulfitmassafabriker

Also Published As

Publication number Publication date
FI950763L (fi) 1995-02-20
SE9202419D0 (sv) 1992-08-24
JPH08500641A (ja) 1996-01-23
CZ47795A3 (en) 1995-10-18
CA2142616C (en) 2000-08-01
WO1994004747A1 (en) 1994-03-03
RU95106466A (ru) 1996-11-20
CZ283622B6 (cs) 1998-05-13
RU2095504C1 (ru) 1997-11-10
CA2142616A1 (en) 1994-03-03
EP0656083A1 (en) 1995-06-07
BR9306916A (pt) 1999-01-12
AU4988993A (en) 1994-03-15
US5628874A (en) 1997-05-13
AU671487B2 (en) 1996-08-29
DE69302019D1 (de) 1996-05-02
PL307585A1 (en) 1995-05-29
DE69302019T2 (de) 1996-09-19
NZ255620A (en) 1995-10-26
EP0656083B1 (en) 1996-03-27
ATE136074T1 (de) 1996-04-15
FI108550B (fi) 2002-02-15
JP2630507B2 (ja) 1997-07-16
FI950763A0 (fi) 1995-02-20

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