Method for controlling carryover in a chemical recovery boiler and a chemical recovery boiler

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United States of America Patent

PATENT NO 11746470
APP PUB NO 20210071361A1
SERIAL NO

17015635

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for controlling carryover in a chemical recovery boiler. The method comprises feeding black or brown liquor to a furnace of the chemical recovery boiler through an injection gun to burn the black or brown liquor. The chemical recovery boiler comprises a bullnose, which narrows the furnace, and a first superheater, of which at least a part is arranged at a higher vertical level than the bullnose. The method comprises measuring information indicative of a spatial temperature distribution on a cross section of the furnace, wherein the cross section is above the injection gun and below the first superheater; determining primary information indicative of carryover using the information indicative of the spatial temperature distribution on the cross section of the furnace; and controlling a temperature of the black or brown liquor that is fed to the furnace using the primary information. In addition, a system for performing the method.

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Patent Owner(s)

Patent OwnerAddress
VALMET AUTOMATION OY02150 ESPOO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Koskinen, Jukka Tampere, FI 43 393
Mansikkasalo, Jarmo Pirkkala, FI 9 11

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