The following content will discuss about the problem that why black smoke is produced when burning the ordinary straws. At first, straws are loose and rich in volatile components. If being heated, a lot of inflammable components in straws will be released out. If the ventilating effect is poor, the organic volatile will be brought away by smoke. So, here comes the black smoke.
When volatile is gradually burned out, carbons in straw become loose. When air moves, carbons are disintegrated. The air brings away the disintegrated carbon particles, then you can see the flying black butt. In a word, if you directly burn the raw straws, air pollution and low thermal efficiency are the results that you have to bear.
How about burning the biomass pellets? It is much better than directly burning the raw materials. Biomass pellets, as the finished products of saw dust pellet machine, are featured in the great density. The great density limits the releasing speed of volatile. Burning reaction mostly occurs on surface. So, the burning time is prolonged. If ventilating effect is good, black smoke will be rare.
Oxygen amount required for the whole burning process is fed stably, so the burning work of biomass pellets is stable, too.
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