Ignition test for mechanically activated pulverized coal in a vertical tubular reactor
E.B. Butakov1, A.P. Burdukov1, A.V. Kuznetsov1, G.V. Chernova1, V.A. Kuznetsov1,2
1Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
2Siberian Federal University, Krasnoyarsk, Russia
Keywords: уголь, механоактивация, реакционная способность, самовоспламенение, вертикальный трубчатый реактор, coal, mechanical activation, reactivity, self-ignition, vertical tubular reactor
Abstract
The effect of mechanically activated coal grinding on the time of their ignition in a vertical tubular reactor is studied experimentally and numerically. The experiments showed that coal, ground by an activator mill (disintegrator mill), ignites faster due to the effect of mechanical activation. According to numerical calculation of the processes of ignition and combustion of mechanically activated pulverized coal fuel, it is clear that the use of non-stationary methods for turbulence simulation and a model of the volatile yield, taking into account the structure of coal matter, allow an estimate of the contribution of mechanically activated grinding to the intensity of devolatilization.
|
