CL2019002845A1 - Filtro de disco a presión para licores de causticización que contienen barro de cal - Google Patents

Filtro de disco a presión para licores de causticización que contienen barro de cal

Info

Publication number
CL2019002845A1
CL2019002845A1 CL2019002845A CL2019002845A CL2019002845A1 CL 2019002845 A1 CL2019002845 A1 CL 2019002845A1 CL 2019002845 A CL2019002845 A CL 2019002845A CL 2019002845 A CL2019002845 A CL 2019002845A CL 2019002845 A1 CL2019002845 A1 CL 2019002845A1
Authority
CL
Chile
Prior art keywords
lime mud
disc filter
causticizing
liquors containing
filter
Prior art date
Application number
CL2019002845A
Other languages
English (en)
Inventor
Roger Jansson
Jerk Söderman
Patrik Björnvall
Henrik Ransjö
Patrik Löwnertz
Original Assignee
Valmet 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 Valmet Oy filed Critical Valmet Oy
Publication of CL2019002845A1 publication Critical patent/CL2019002845A1/es

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/804—Accessories integrally combined with devices for controlling the filtration
    • B01D33/807—Accessories integrally combined with devices for controlling the filtration by level measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/804—Accessories integrally combined with devices for controlling the filtration
    • B01D33/808—Accessories integrally combined with devices for controlling the filtration by pressure measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/82—Means for pressure distribution
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Filtration Of Liquid (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention relates to an improvement in pressurized disc filters used for the filtering of causticization liquors containing lime mud particles. According to the inventive method and design, the liquor level in the vat of the disc filter is raised above the rotating shaft of the disc filter, thereby reducing the power rating in compressors used to pressurize the filter. By 5 applying an operating pressure that lies 1-2 bar higher than conventional pressurized disc filters used in the causticization field, sufficient dryness of the lime mud can still be obtained, and the pressure losses through the precoat are substantially reduced.
CL2019002845A 2017-04-07 2019-10-04 Filtro de disco a presión para licores de causticización que contienen barro de cal CL2019002845A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1750424A SE540553C2 (en) 2017-04-07 2017-04-07 Pressurized disc filter for causticization liquors containing lime mud

Publications (1)

Publication Number Publication Date
CL2019002845A1 true CL2019002845A1 (es) 2019-12-27

Family

ID=63580878

Family Applications (1)

Application Number Title Priority Date Filing Date
CL2019002845A CL2019002845A1 (es) 2017-04-07 2019-10-04 Filtro de disco a presión para licores de causticización que contienen barro de cal

Country Status (6)

Country Link
EP (1) EP3606636A4 (es)
CN (1) CN110475596A (es)
BR (1) BR112019019801A2 (es)
CL (1) CL2019002845A1 (es)
SE (1) SE540553C2 (es)
WO (1) WO2018186795A1 (es)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE445655B (sv) * 1984-11-23 1986-07-07 Hedemora Ab Roterande skivfilter
SE463771C (sv) * 1985-05-02 1999-07-12 Caustec Ab Anordning och förfarande för separering av vitlut, mesa och eventuellt slam varvid användes ett roterande skivfilter
SE451948B (sv) * 1985-05-02 1987-11-09 Hedemora Ab Filter for kontinuerlig filtrering under tryck av en suspension
SE464390B (sv) * 1989-06-14 1991-04-22 Celleco Hedemora Ab Filter foer kontinuerlig filtrering
CA2268936A1 (en) * 1996-10-15 1998-04-23 Baker Hughes Incorporated Agitator for use with a disc filter
SE510603C2 (sv) * 1997-08-21 1999-06-07 Kvaerner Pulping Asa Roterande filter med förfiltrering i två steg, förfarande för filtrering samt användning av filtret för avvattning av cellulosafibersuspensioner
SE516246C2 (sv) * 2001-02-07 2001-12-10 Kvaerner Pulping Tech Rörsystem för mottagning och transport av mesa från ett vitlutsfilter
SE526706C2 (sv) * 2004-04-16 2005-10-25 Kvaerner Pulping Tech Förfarande och anordning för tvätt av mesa
SE0401358L (sv) * 2004-05-26 2005-02-22 Kvaerner Pulping Tech Förfarande och anordning för rengöring av filter
SE0702702L (sv) * 2007-12-06 2008-09-09 Metso Fiber Karlstad Ab System för mottagning och transport av mesa från ett vitlutsfilter
WO2011078749A1 (en) * 2009-12-23 2011-06-30 Metso Paper Sweden Ab Method and system for washing lime mud
WO2014011089A1 (en) * 2012-07-09 2014-01-16 Metso Paper Sweden Ab Method and apparatus for obtaining strong white liquor and lime mud with low residual alkali level
SE538959C2 (en) * 2015-07-09 2017-03-07 Valmet Oy Agitator system for a disc filter

Also Published As

Publication number Publication date
EP3606636A1 (en) 2020-02-12
WO2018186795A1 (en) 2018-10-11
EP3606636A4 (en) 2021-01-06
BR112019019801A2 (pt) 2020-04-22
SE1750424A1 (en) 2018-09-25
SE540553C2 (en) 2018-09-25
CN110475596A (zh) 2019-11-19

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