二是降低烟尘初始排放量和烟气黑度。

Two is to reduce soot initial emissions and blackness.

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这些参数包括烟气的平均辐射长度、烟气黑度、对流传热系数、烟气的热焓等。

The parameters considered include the mean beam length of flue gas, the emissivity of gas, the film beat transfer coefficient and the enthalpy of flue gas.

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并且因为在炉排上的燃烧是半焦化的煤焦，因此产生的飞灰量小，烟尘浓度、烟气黑度都比较低。

And because in the combustion is half stoker, resulting capital of coking of fly ash, the small amount of smoke concentration and blackness is low.

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