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FI130726B1 - A chemical recovery boiler and a method for controlling a chemical recovery boiler - Google Patents

A chemical recovery boiler and a method for controlling a chemical recovery boiler

Info

Publication number
FI130726B1
FI130726B1 FI20206010A FI20206010A FI130726B1 FI 130726 B1 FI130726 B1 FI 130726B1 FI 20206010 A FI20206010 A FI 20206010A FI 20206010 A FI20206010 A FI 20206010A FI 130726 B1 FI130726 B1 FI 130726B1
Authority
FI
Finland
Prior art keywords
recovery boiler
chemical recovery
smelt
controlling
shattering
Prior art date
Application number
FI20206010A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20206010A1 (en
Inventor
Anna Hakala
Lars Lavonen
Ralf Ahlqvist
Original Assignee
Valmet Technologies 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 Technologies Oy filed Critical Valmet Technologies Oy
Priority to FI20206010A priority Critical patent/FI130726B1/en
Priority to PCT/FI2021/050663 priority patent/WO2022079347A1/en
Publication of FI20206010A1 publication Critical patent/FI20206010A1/en
Application granted granted Critical
Publication of FI130726B1 publication Critical patent/FI130726B1/en

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
    • D21C11/12—Combustion of pulp liquors
    • D21C11/122—Treatment, e.g. dissolution, of the smelt
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F23J1/08—Liquid slag removal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/14—Charging or discharging liquid or molten material
    • F27D3/145—Runners therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/10—Liquid waste
    • F23G2209/101—Waste liquor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Paper (AREA)

Abstract

A method for controlling a chemical recovery boiler (100). The method comprises treating spent liquor (102) in a furnace (105) of the chemical recovery boiler (100) to form a char bed (130) into the furnace, conveying smelt (140) from the char bed through a smelt spout (145) to a dissolving tank (150) comprising aqueous solution (152), and shattering the smelt above a surface (155) of the aqueous solution by shattering fluid (170). The method further comprises measuring optically or acoustically a first parameter indicative of at least one of [A] a flow of the smelt (140) through the smelt spout (145) and [B] shattering of the smelt (140); and based on a value of the first parameter, controlling a flow of the shattering fluid (170). A chemical recovery boiler (100) suitable for performing out the method.
FI20206010A 2020-10-14 2020-10-14 A chemical recovery boiler and a method for controlling a chemical recovery boiler FI130726B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20206010A FI130726B1 (en) 2020-10-14 2020-10-14 A chemical recovery boiler and a method for controlling a chemical recovery boiler
PCT/FI2021/050663 WO2022079347A1 (en) 2020-10-14 2021-10-07 A chemical recovery boiler and a method for controlling a chemical recovery boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20206010A FI130726B1 (en) 2020-10-14 2020-10-14 A chemical recovery boiler and a method for controlling a chemical recovery boiler

Publications (2)

Publication Number Publication Date
FI20206010A1 FI20206010A1 (en) 2022-04-15
FI130726B1 true FI130726B1 (en) 2024-02-12

Family

ID=78179459

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20206010A FI130726B1 (en) 2020-10-14 2020-10-14 A chemical recovery boiler and a method for controlling a chemical recovery boiler

Country Status (2)

Country Link
FI (1) FI130726B1 (en)
WO (1) WO2022079347A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5204069A (en) * 1991-10-07 1993-04-20 Westvaco Corporation Recovery boiler smelt shattering spray
FI2933U1 (en) * 1996-12-20 1997-06-10 Ahlstrom Machinery Oy Arrangement in connection with the recovery boiler melt chute
FI122814B (en) * 2005-01-17 2012-07-13 Andritz Oy Method and arrangement for chemical recovery boiler
US7806127B2 (en) * 2006-09-29 2010-10-05 Alstom Technology Ltd Smelt spout enclosure for chemical recovery boilers
FI122899B (en) * 2006-10-16 2012-08-31 Metso Power Oy Cleaner for the soda boiler
US8308899B2 (en) * 2009-12-03 2012-11-13 Andritz Inc. Shatter jet nozzle with multiple steam sources and method for disrupting smelt flow to a boiler
US10012616B2 (en) * 2015-11-06 2018-07-03 Andritz Inc. Acoustic emission system and method for predicting explosions in dissolving tank
US10557235B2 (en) * 2017-07-21 2020-02-11 Andritz Inc. Ultrasonic semelt dissolving and shattering system

Also Published As

Publication number Publication date
WO2022079347A1 (en) 2022-04-21
FI20206010A1 (en) 2022-04-15

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