Ash fusion temperature (AFT) analysis determines the temperatures at which fuel ash (inorganic material) transitions through the stages of melting as it transforms from a solid to liquid state. |
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Advanced Technology |
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What's the benefit? |
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The behaviour of a fuel's ash residue at high temperature is a critical factor in industrial thermal conversion processes, most notably gasification and combustion processes in boiler facilities. In this setting, ash fusion parameters are useful guide points for fuel source selection, engineering design and operational parameters. |
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Analyses that complement AFT |
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Econotech offers a full range of ash analyses. Ash fusion temperatures are influenced by chemical composition, so when troubleshooting it is often useful to perform complementary tests alongside AFT so that the basis for unusual or problematic ash behaviour may be understood. For example, significant quantities of monovalent cations (eg sodium, potassium), divalent cations (eg calcium, magnesium), and sulfur, phosphorous or chlorine in ash can result in physical eutectic or chemical transformation phenomena that cause AFT parameters to deviate significantly from the expected range. Determination of these chemical properties using a combination of ICP, XRD and other techniques can enhance root cause analysis and expedite a resolution. |
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