Hierarchical methods to improve the performance of the SiC - FET as SO2 sensors in flue gas desulphurization system
2015 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, Vol. 206, 609-616 p.Article in journal (Refereed) Published
Experiments were performed both in the laboratory and a desulfurization pilot unit in order to improve the SiC-FET sensor performance using two-step data evaluation. In both cases, a porous Pt-gate enhancement type SiC-FET was utilized in a temperature cycled operation (TCO). Liner Discriminant Analysis (LDA) was chosen as the method for multivariate data analysis. Hierarchical methods with two-step LDA worked quite well in the laboratory tests with SO2 concentrations varied from 25-200 ppm. The same data evaluation was also applied to tests in the desulfurization pilot unit, with higher gas flow and a larger SO2 concentration range (up to 5000 ppm). The results from the SO2 quantification showed a significantly improved fit to corresponding reference instrument (FTIR) values.
Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 206, 609-616 p.
Other Engineering and Technologies not elsewhere specified
IdentifiersURN: urn:nbn:se:liu:diva-106212DOI: 10.1016/j.snb.2014.09.113ISI: 000345234200079OAI: oai:DiVA.org:liu-106212DiVA: diva2:714646