engleski

Improvement of Coal Combustion Efficiency and Decrease of Harmful Emission Under the Influence of Plasma - Modelling

A numerical study has been undertaken which simulates the process of pulverised coal preparation for combustion using plasmas. Two combustion models (‘fast chemistry’ based on one-step fuel transformation into final products, and ‘stretched laminar flamelets’ with the detailed chemical mechanism for the combustion of volatiles) are tested and validated with the experimental results. In a preliminary calculation, the spreading rate and temperature contours of the plasma jet emerging from the plasma generator nozzle were simulated, ignoring combustion. Subsequently, coal preparation calculations including the effects of combustion were performed for the plasma burner. Temperature profiles, coal particles history and species concentrations at the plasma burner exit are presented and discussed.

combustion models, pulverised coal, plasma burner

nije evidentirano