Observational analysis shows reduced corrosion of heating surfaces with low-salinity coal mixtures, highlighting salt content impact.
The modern mechanisms of corrosion processes during the burning of carbon raw materials (biomass waste, coal of various metamorphisms) with a high content (Na2O in ash ≥2%) of low-melting salts and sulfur are considered. The morphological features of deposits on the surface of the metal exposed to the high-temperature combustion gases of the salty coal (SC) before and after desalination and also composition of corrosion products of ferrite steel during SC ashing and its mixture with power-generating gas coal are determined. It is experimentally shown that extraction of water-soluble compounds from SC (on the example of deposits of Northern Donbass) and its mixture with coal of low salinity lead to a significant reduction in corrosion of heating surfaces during burning.
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Шендрик et al. (2024) studied this question.
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