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Investigation of air-blown two-stage entrained-flow gasification of micronized coal

机译：微粉化煤的空气吹塑两级夹带流动气化研究

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The aim of this work was to intensify the air-blown conversion of coarse grinding coal into the fuel syngas by means of mechanical activation of some part of the coal without the involvement of other methods of conversion intensification (oxygen enrichment of blast, heating of blast or fuel, etc.). Experimental studies were carried out at the Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences (IT SB RAS) using special setup with the two-stage coal and air input. We have performed a comprehensive experimental and computational study of air-blown gasification of coarse coal (G(coal2)) by combustion products of micronized coal (G(coal1)) at the ratio of primary and secondary coal g(c) = G(coal1)/G(coal2) = 0.82-0.39 (90/110-90/230 kg/kg), stoichiometric factor alpha = 1.39-0.51 and the temperature in the flame from 1.200 to 1.300 to 1.500-1.600 degrees C. It has been found that micronization of primary coal allows maintaining a stable autothermal mode of air-blown gasification of coarse bituminous coal without involving the additional methods of conversion intensification at alpha = 0.5. The CFD simulation based on experiments determined the conditions for implementation of the investigated process.
机译：这项工作的目的是通过煤炭的某些部分的机械激活将粗磨煤的空气吹入粗磨煤的空气吹送到燃料合成气中，而不会参与其他转化率加剧（爆炸，爆炸的氧气富集）或燃料等）。在俄罗斯科学院西伯利亚分公司（IT SB RAS）的热物理学研究所进行了实验研究，采用了两阶段煤和空气投入的特殊设置。通过初级和二次煤G（C）= G（C）= G（P）的微分煤（G（煤炭1））的燃烧产物进行了粗煤（G（煤2））空气吹气的全面实验和计算研究煤炭1）/ g（煤2）= 0.82-0.39（90 / 110-90 / 230 kg / kg），化学计量因子α= 1.39-0.51，火焰中的温度为1.200至1.300至1.500-1.600c。它有发现初级煤的微粉化允许维持粗烟煤的稳定自热模式，而不涉及在α= 0.5处的额外转化强化方法。基于实验的CFD仿真确定了实施调查过程的条件。

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