Ignition and Combustion Characteristics for the Mixture Fuels of Wood Dust and Powdered Anthracite

Weijun Liu, Jianjie Han, Lu Li, and Piao Tang


Pulverized wood dust, mixture fuel, ignition, whole-house approach, twin houses


It is a good choice that pulverized wood dust can be applied to fuel, which it belongs to an inevitable by-product in artificial wood broad manufacturing process. This article presents an efficient way to burn pulverized wood dust mixed by powdered anthracite. In the present study, the technical analysis, ignition and combustion characterization of the mixed fuels consisted from pulverized wood dust and powdered anthracite in different proportions was investigated by general measuring instruments, TGA/DTA, visual dropper tube furnace and HD video camera. On the basis of a amount of testing data, TG/DTG thermal analysis curves and ignition and combustion table are carried out, important result is given some photos. The research results were shown the following:(1) The component content and gross calorific value of their mixture fuel turned to the calculation value in mass ratio of wood dust to powder anthracite, but not perfectly. (2) The temperature of pyrolysis devolatilization and ignition of mixture fuel tends to characteristics of wood dust, its igniting characteristic is observably improved relative to anthracite’s, but its burnout characteristic increase a little. The mixture fuel is better wood dust content above 30%, but its igniting and burning characteristics is not observably improved if very high wood dust content is chased in mixture fuel. (3) the mixture of wood dust and anthracite had mutual promoted effects violently during igniting and burning process, the burning rate are finally embodied by accelerated observably. In addition, the anthracite burnout of mixture fuel flow is better than only powdered anthracite flow in combustion, so the floating combustion space of mixture fuel is smaller than anthracite’s.

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