SE0602475L - Apparatus and method for leaching chloride and potassium from electric filter ash - Google Patents

Apparatus and method for leaching chloride and potassium from electric filter ash

Info

Publication number
SE0602475L
SE0602475L SE0602475A SE0602475A SE0602475L SE 0602475 L SE0602475 L SE 0602475L SE 0602475 A SE0602475 A SE 0602475A SE 0602475 A SE0602475 A SE 0602475A SE 0602475 L SE0602475 L SE 0602475L
Authority
SE
Sweden
Prior art keywords
zone
fluid
filter ash
leaching
potassium
Prior art date
Application number
SE0602475A
Other languages
Swedish (sv)
Other versions
SE530373C3 (en
SE530373C2 (en
Inventor
Patrik Loewnertz
Original Assignee
Metso Power 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 Metso Power Ab filed Critical Metso Power Ab
Priority to SE0602475A priority Critical patent/SE530373C3/en
Priority to PCT/SE2007/050856 priority patent/WO2008063123A1/en
Publication of SE530373C2 publication Critical patent/SE530373C2/en
Publication of SE0602475L publication Critical patent/SE0602475L/en
Publication of SE530373C3 publication Critical patent/SE530373C3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/04—Chlorides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
    • B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2488—Feed or discharge mechanisms for settling tanks bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/16—Purification
    • 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
    • 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

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

The invention concerns an arrangement and a method for the leaching of electrical filter ash that contains potassium and chlorides. The electrical filter ash undergoes mixing in the invention with leaching fluid in a first recirculation zone. The mixture of electrical filter ash and leaching fluid is subsequently led to a second recirculation zone. The mixture in this zone is placed into a flow that is toroidal relative to the horizontal plane. The fluid is forced to recirculate in the toroidal flow downwards at its outer edges and upwards at its centre, whereby crystal growth of sludge particles is promoted in this toroidal flow. Fluid that is enriched in potassium and chlorides is withdrawn from the second recirculation zone from the outer edge of the enforced toroidal flow, while slurry particles sink down into a third sedimentation zone. Condensate is added in the sedimentation zone such that this is expelled through the slurry particles. Leaching fluid is withdrawn from the sedimentation zone, which fluid is added at the first zone in order to be mixed with the electrical filter ash.
SE0602475A 2006-11-22 2006-11-22 Apparatus and method for leaching chloride and potassium from electric filter ash SE530373C3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0602475A SE530373C3 (en) 2006-11-22 2006-11-22 Apparatus and method for leaching chloride and potassium from electric filter ash
PCT/SE2007/050856 WO2008063123A1 (en) 2006-11-22 2007-11-16 Leaching of chloride and potassium from electric filter ashes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0602475A SE530373C3 (en) 2006-11-22 2006-11-22 Apparatus and method for leaching chloride and potassium from electric filter ash

Publications (3)

Publication Number Publication Date
SE530373C2 SE530373C2 (en) 2008-05-13
SE0602475L true SE0602475L (en) 2008-05-13
SE530373C3 SE530373C3 (en) 2008-06-10

Family

ID=39356794

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0602475A SE530373C3 (en) 2006-11-22 2006-11-22 Apparatus and method for leaching chloride and potassium from electric filter ash

Country Status (2)

Country Link
SE (1) SE530373C3 (en)
WO (1) WO2008063123A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103435073B (en) * 2013-09-09 2015-01-07 北京科技大学 Method for producing potassium chloride by using blast furnace dust of iron and steel enterprises
CN107413069A (en) * 2017-08-08 2017-12-01 黄丽英 Chinese medicine extracting tank
CN110026298A (en) * 2019-04-18 2019-07-19 哈尔滨工业大学 A kind of micro-nano powder partial size centrifugal classification apparatus and its application method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000034A (en) * 1975-08-15 1976-12-28 Hooker Chemicals & Plastics Corporation Kraft mill recovery system
JPH08170288A (en) * 1994-12-15 1996-07-02 Mitsubishi Heavy Ind Ltd Removal of sodium salt and potassium salt from caught ash of soda-recovering boiler
SE9502583D0 (en) * 1995-07-12 1995-07-12 Eka Chemicals Ab Leaching process
SE9603972D0 (en) * 1996-10-31 1996-10-31 Kvaerner Pulping Tech Process for making ash consisting mainly of sodium sulphate from a soda boiler
SE0102717L (en) * 2001-08-14 2002-06-25 Kvaerner Pulping Tech Procedure for leaching electric filter ash from a soda boiler

Also Published As

Publication number Publication date
WO2008063123A1 (en) 2008-05-29
SE530373C3 (en) 2008-06-10
SE530373C2 (en) 2008-05-13

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