CORROSION PREVENTION DEVICE AND CORROSION PREVENTION METHOD

WIPO Patent Application WO/2020/158497

A1

A corrosion prevention device comprising: a first light source that comprises a light emitting diode to emit irradiation light in an absorption wavelength band containing the absorption spectrum of a first object to be measured that is generated by combustion of an object to be burned; a second light source that comprises a light emitting diode to emit irradiation light in an absorption wavelength band containing an absorption spectrum of a second object to be measured that is generated by combustion of the fuel object to be burned, said absorption spectrum being different than the absorption spectrum of the first object to be measured; a first light receiver that receives the irradiation light emitted from the first light source; a second light receiver that receives the irradiation light emitted from the second light source; and a calculation unit that calculates, on the basis of the transmitted light intensity I1 of the irradiation light received by the first light receiver and the transmitted light intensity I2 of the irradiation light received by the second light receiver, the absorbance and/or transmittance of the first object to be measured in the combustion gas generated from burning the object to be burned.

YOKOYAMA KAZUYA (JP)
NAKAJYO TERUNOBU (JP)

PCT/JP2020/001853

August 06, 2020

January 21, 2020

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SUMITOMO HEAVY INDUSTRIES (JP)

F23G5/50; G01N21/33

WO2017144507A1

2017-08-31

JP2003511692A	2003-03-25
JP2012002463A	2012-01-05
JPS6321866B2	1988-05-09
US20150138544A1	2015-05-21
US20100168984A1	2010-07-01
JP2018036166A	2018-03-08

INABA, Yoshiyuki et al. (JP)

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