中文摘要：

在固定床中考察了不同温度下神府煤焦催化热解中K2CO3的转变形态,以及在TG-DSC分析仪上研究了K2CO3添加方式和粒径对其气化速率的影响.结果表明,随着气化温度的升高,催化剂的添加方式对煤焦气化反应速率的影响减弱;对热解残渣的SEM/EDX谱图显示,随着温度升高,K催化剂在煤焦中能展现更好的分散性;在热解过程中,煤焦中的碳通过与K2CO3反应释放出CO2和CO,生成的气体量与温度相关;在较低温度650℃下,不同粒径对气化效果影响差别较大,粒径越小气化反应性越好.K2CO3的流动性随着温度升高而增强,催化活性也越强;低于700℃时,要考虑添加方式对气化反应性的影响.

英文摘要：

The transformation of K2CO3 in the course of Shenfu char catalytic pyrolysis under differenttemperatures was studied in the fixed-bed reactor; the influence of loading methods of K2CO3 and particle size ongasification reactivity was investigated in a TG-DSC analytical reactor. The results showed that with the increaseof temperature, the effect of loading methods on gasification rate is weakened; K catalyst shows high dispersityby means of SEM / EDX analysis of pyrolysis residue. CO2 and CO are produced through the interaction ofK2CO3 and coal char in the pyrolysis and there is a linear relation between the amount of released gas andtemperature. The particle size of K2CO3 and coal char has notable impact on gasification; the gasification rateincrease with a thinner particle at 650 ℃. K2CO3 shows high mobility within the coal char phase at elevatedtemperature, which is consistent with its catalytic activities; the effect of loading methods on gasification shouldbe considered under a temperature below 700 ℃.