FI127615B - Menetelmä talteenottokattilan tuhkan käsittelemiseksi - Google Patents

Menetelmä talteenottokattilan tuhkan käsittelemiseksi Download PDF

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Publication number
FI127615B
FI127615B FI20155886A FI20155886A FI127615B FI 127615 B FI127615 B FI 127615B FI 20155886 A FI20155886 A FI 20155886A FI 20155886 A FI20155886 A FI 20155886A FI 127615 B FI127615 B FI 127615B
Authority
FI
Finland
Prior art keywords
slurry
ash
tall oil
brine
potassium
Prior art date
Application number
FI20155886A
Other languages
English (en)
Swedish (sv)
Other versions
FI20155886A (fi
Inventor
Anders Lovell
Ulf Alterby
Original Assignee
Andritz 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 Andritz Oy filed Critical Andritz Oy
Priority to FI20155886A priority Critical patent/FI127615B/fi
Priority to PCT/FI2016/050830 priority patent/WO2017089656A1/en
Publication of FI20155886A publication Critical patent/FI20155886A/fi
Application granted granted Critical
Publication of FI127615B publication Critical patent/FI127615B/fi

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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
    • D21C11/12—Combustion of pulp liquors
    • 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
    • C01D3/06—Preparation by working up brines; seawater or spent lyes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
    • C11B13/005—Recovery of fats, fatty oils or fatty acids from waste materials of residues of the fabrication of wood-cellulose (in particular tall-oil)
    • 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)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Keksintö koskee menetelmää kloridin ja kaliumin poistamiseksi tuhkasta, joka on muodostunut sellutehtaan talteenottokattilassa. Haihdutettua mustalipeää poltetaan, jolloin tuhka lietetään vesipitoiseen liuokseen ainakin yhdessä uuttovaiheessa ja lietteen pH säädetään. Liete johdetaan ainakin yhdestä uuttovaiheesta erotusvaiheeseen, jossa natriumyhdisteitä sisältävä kiinteäfaasi erotetaan kloridia ja kaliumia sisältävästä liuosfaasista, ja kiinteä faasi johdetaan talteenottokiertoon. Lietteen pH säädetään lisäämällä mäntyöljypalstoituksen jätehappoa tai mäntyöljypalstoituksen jätehappoa yhdessä muun hapon kanssa.

Claims (3)

1. A method for removing chloride and potassium from ash formed in a recovery boiler at a pulp mill, in which evaporated black liquor is fired, wherein the ash is made to a slurry in an aqueous solution in at least one leaching stage and the pH of the slurry is adjusted, and the slurry is led from the at least one leaching stage to a separation stage, in which a solid phase containing sodium compounds is separated from a liquid phase containing chloride and potassium, and the solid phase is fed to the recovery cycle, characterized in that the aqueous solution contains tall oil brine wherein the pH of the slurry is adjusted by adding tall oil brine or tall oil brine in combination with acid. 2. A method according to claim 1, characterized in that the pH of the tall oil brine is below 7. 3. A method according to claim 1 or 2, characterized in that the pH of the slurry is decreased to 7-11, preferably below 9. VAATIMUKSET:
1. Menetelmä kloridin ja kaliumin poistamiseksi tuhkasta, joka on muodostunut sellutehtaan talteenottokattilassa, missä haihdutettua mustalipeää poltetaan, jolloin tuhka lietetään vesipitoiseen liuokseen ainakin yhdessä uuttovaiheessa ja lietteen pH säädetään, ja liete johdetaan ainakin yhdestä uuttovaiheesta erotusvaiheeseen, jossa natriumyhdisteitä sisältävä kiinteäfaasi erotetaan kloridia ja kaliumia sisältävästä liuosfaasista, ja kiinteä faasi johdetaan talteenottokiertoon, tunnettu siitä että vesipitoinen liuos sisältää mäntyöljypalstoituksen jätehappoa, jolloin lietteen pH säädetään lisäämällä mäntyöljypalstoituksen jätehappoa tai mäntyöljypalstoituksen jätehappoa yhdessä muun hapon kanssa.
2. Vaatimuksen 1 mukainen menetelmä, tunnettu siitä, että mäntyöljypalstoituksen jätehapon pH on alle 7.
3. Vaatimuksen 1 tai 2 mukainen menetelmä, tunnettu siitä, että lietteen pH lasketaan arvoon 7-11, edullisesti arvoon alle 9.
FI20155886A 2015-11-27 2015-11-27 Menetelmä talteenottokattilan tuhkan käsittelemiseksi FI127615B (fi)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20155886A FI127615B (fi) 2015-11-27 2015-11-27 Menetelmä talteenottokattilan tuhkan käsittelemiseksi
PCT/FI2016/050830 WO2017089656A1 (en) 2015-11-27 2016-11-25 A method for treating recovery boiler ash

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20155886A FI127615B (fi) 2015-11-27 2015-11-27 Menetelmä talteenottokattilan tuhkan käsittelemiseksi

Publications (2)

Publication Number Publication Date
FI20155886A FI20155886A (fi) 2017-05-28
FI127615B true FI127615B (fi) 2018-10-31

Family

ID=57590536

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20155886A FI127615B (fi) 2015-11-27 2015-11-27 Menetelmä talteenottokattilan tuhkan käsittelemiseksi

Country Status (2)

Country Link
FI (1) FI127615B (fi)
WO (1) WO2017089656A1 (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109368666B (zh) * 2018-12-21 2023-11-14 中冶南方都市环保工程技术股份有限公司 一种提钾盐系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833462A (en) 1971-03-15 1974-09-03 Mac Millan Bloedel Ltd Process of removing sodium chloride from kraft pulping process chemical recovery systems
SE9603972D0 (sv) * 1996-10-31 1996-10-31 Kvaerner Pulping Tech Förfarande för framställning av aska bestående huvudsakligen av natriumsulfat från en sodapanna
EP1302529A1 (en) * 2001-10-09 2003-04-16 Linde AG Brine separation in tall soap oil preparation
CN102421961B (zh) 2009-05-06 2013-09-18 美卓电力有限公司 改进的从回收锅炉中浸提静电除尘器灰的工艺
US8246779B2 (en) * 2009-09-24 2012-08-21 Noram Engineering And Constructors Ltd. Maintenance of sulfur concentration in Kraft pulp processes
AU2013263198A1 (en) * 2012-05-14 2014-12-04 Arizona Chemical Company, Llc Semi-continuous acidulation process
WO2015010179A1 (en) * 2013-07-25 2015-01-29 Noram Engineering And Constructors Ltd. Method of reducing chloride and potassium ion concentrations in a pulp mill chemical recovery system

Also Published As

Publication number Publication date
FI20155886A (fi) 2017-05-28
WO2017089656A1 (en) 2017-06-01

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