Developing coal-combustion technologies

Penner, S.S.; Alpert, S.B.; Béer, J.M.; Bozzuto, Carl; Glassman, Irvin; Knust, R.B.; Markert, W.; Oppenheim, A. K.; Smoot, L.D.; Sommerlad, R.E.; Wagoner, C.L.; Wender, I.; Wolowodiuk, W.; Yeager, K.

doi:10.1016/0360-5442(84)90046-x

Cited by 4 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alkalis are one of the most critical gaseous emissions generated from the use of biomass and wastes as a feedstock. High-temperature agglomeration, caking, fouling, and corrosion can shorten the service life of boilers and entire facilities or lead to severe damage of high-cost downstream components, − such as catalysts, fuel cells, or turbines. For example, alkalis have been reported to cause performance losses and cell degradation in solid oxide fuel cells because of corrosion of the anode and poisoning of the nickel catalyst. , …”

Section: Introductionmentioning

confidence: 99%

Sampling and Online Analysis of Alkalis in Thermal Process Gases with a Novel Surface Ionization Detector

et al. 2011

View full text Add to dashboard Cite

When using biomass or waste as a feedstock for power production, alkalis are a major concern because of their negative effects on equipment. To investigate the release behavior of alkalis and the effectiveness of countermeasures, it is indispensable to quantify alkali emissions with a high time resolution (less than 1 min). This paper presents a newly developed alkali detector based on the principle of surface ionization. The detector includes a number of improvements compared to previous designs that enable a reproducible measurement of alkalis in heavily tar-and particle-laden product gases. Our redesigned alkali detector has demonstrated high sensitivity and improved characteristics for making measurements of tar-and particle-laden process gases. Using an ultrasonic nebulizer as a source for alkali aerosols, we could conduct a calibration of the alkali detector over 4 orders of magnitude. In combination with a dilution setup and a sampling lance, we could take online measurements of gasifier producer gas with a high degree of reproducibility and a high time resolution of 1 s. The measurements of product gas have proven the feasibility of using the detector for field measurements.

show abstract