Simultaneous in situ measurement of CO, H2O, and gas temperatures in a full-sized coal-fired power plant by near-infrared diode lasers

被引：204

作者：

Teichert, H ^{[1
]}

Fernholz, T ^{[1
]}

Ebert, V ^{[1
]}

机构：

[1] Heidelberg Univ, Inst Chem Phys, D-69120 Heidelberg, Germany

来源：

APPLIED OPTICS | 2003年 / 42卷 / 12期

关键词：

D O I：

10.1364/AO.42.002043

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present what is to our knowledge the first near-infrared diode-laser-based absorption spectrometer that is suitable for simultaneous in situ measurement of carbon monoxide, water vapor, and temperature in the combustion chamber (20-m diameter, 13-m path length) of a 600-MW lignite-fired power plant. A fiber-coupled distributed-feedback diode-laser module at 1.56 mum served for CO detection, and a Fabry-Perot diode laser at 813 nm was used to determine H2O concentrations and temperature from multiline water spectra. Despite severe light losses (transmission, <10(-3)) and strong background radiation we achieved a resolution of 1.9 x 10(-4) (1sigma) fractional absorption, equivalent to 200 parts in 10(6) by volume of CO (at 1450 K, 10(5) Pa) with 30-s averaging time. (C) 2003 Optical Society of America.

引用

页码：2043 / 2051

页数：9

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