Scanning Electron Microscopy Point Count.
The SEMPC technique is used to characterize entrained ash and deposits. It provides information on the degree of melting and interaction of various deposited ash particles as well as quantitative information on the abundance of phases present. This information is used to identify the material responsible for the deposit. SEMPC can be used to identify and quantify the amount of melted phases and their viscosities. Various regions in deposits and individual entrained ash particles can be examined to determine the changes that occurred with operating conditions (temperature and oxygen levels).
When combined with morphological analysis, SEMPC can provide a good understanding of a particular deposition problem. This understanding, in turn, often leads to finding effective operational adjustments that can reduce or eliminate the ash-related problem.
Learn about bonding phase identification using SEMPC analysis.Learn about morphological analysis used for bed agglomeration bonding material identification. (See: Bed Agglomerate and Ash Deposition Formation.)