Determining the reduction rate of a recovery boiler

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United States of America

PATENT NO 12134859
APP PUB NO 20220220671A1
SERIAL NO

17612191

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Abstract

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A method to determine a reduction rate of a recovery boiler using optical information from a chemical smelt sample. A processor is used to read a digital frame at least part of which represents the chemical smelt sample of the recovery boiler. An area of interest is determined from the digital frame read comprising at least part of the area in the digital frame representing the chemical smelt sample. Of the pixel values of the area of interest, one or more spectral characteristic values correlating with the change of reduction rate are determined. The reduction rate of the recovery boiler is determined using a reduction rate function of one or more of the determined spectral characteristic values weighted at predetermined weights.

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Patent Owner(s)

Patent OwnerAddress
ANDRITZ OYTAMMASAARENKATU 1 HELSINKI 00180

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lappalainen, Heikki Varkaus, FI 3 1
Nurmi, Juho Varkaus, FI 1 0
Rissanen, Sauli Kotka, FI 1 0
Vihavainen, Esa Varkaus, FI 2 1

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