Principle, calibration, and application of the in situ alkali chloride monitor

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...

Full description

Saved in:
Bibliographic Details
Published in:Review of scientific instruments 2009-02, Vol.80 (2), p.023104-023104-4
Main Authors: Forsberg, Christer, Broström, Markus, Backman, Rainer, Edvardsson, Elin, Badiei, Shahriar, Berg, Magnus, Kassman, Håkan
Format: Article
Language:English
Subjects:
Alkalies - analysis
bioenergy conversion
boilers
Calibration
Chlorides - analysis
corrosion
Equipment Design
Equipment Failure Analysis
Flow Injection Analysis - instrumentation
Flow Injection Analysis - standards
flue gases
gas sensors
Gases - analysis
Heating - instrumentation
Microchemistry - instrumentation
Microchemistry - standards
Potassium Chloride - analysis
Reproducibility of Results
Sensitivity and Specificity
Sodium Chloride - analysis
Spectrophotometry, Ultraviolet - instrumentation
Spectrophotometry, Ultraviolet - standards
Sweden
Transducers
ultraviolet spectra
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 ( ≲ 650 ° 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.
ISSN:0034-6748
1089-7623
1089-7623
DOI:10.1063/1.3081015