Forsberg Christer, Broström Markus, Backman Rainer, Edvardsson Elin, Badiei Shahriar, Berg Magnus, Kassman Håkan
Vattenfall AB Nordic Heat, S-162 87 Stockholm, Sweden.
Rev Sci Instrum. 2009 Feb;80(2):023104. doi: 10.1063/1.3081015.
The extended use of biomass for heat and power production has caused increased operational problems with fouling and high-temperature corrosion in boilers. These problems are mainly related to the presence of alkali chlorides (KCl and NaCl) at high concentrations in the flue gas. The in situ alkali chloride monitor (IACM) was developed by Vattenfall Research and Development AB for measuring the alkali chloride concentration in hot flue gases (less than or approximately 650 degrees C). The measurement technique is based on molecular differential absorption spectroscopy in the UV range. Simultaneous measurement of SO(2) concentration is also possible. The measuring range is 1-50 ppm for the sum of KCl and NaCl concentrations and 4-750 ppm for SO(2). This paper describes the principle of the IACM as well as its calibration. Furthermore, an example of its application in an industrial boiler is given.
生物质用于供热和发电的广泛应用导致锅炉运行中积垢和高温腐蚀等问题日益增多。这些问题主要与烟气中高浓度的碱金属氯化物（氯化钾和氯化钠）的存在有关。原位碱金属氯化物监测仪（IACM）由瑞典大瀑布电力公司研发，用于测量热烟气（低于或约650摄氏度）中的碱金属氯化物浓度。测量技术基于紫外波段的分子差分吸收光谱法。同时也可以测量二氧化硫浓度。氯化钾和氯化钠浓度总和的测量范围为1 - 50 ppm，二氧化硫的测量范围为4 - 750 ppm。本文介绍了IACM的原理及其校准方法。此外，还给出了其在工业锅炉中的应用实例。
