In this study, the applicability of chicken manure leachate (CML) to catalytic gasification of coal gasification fine slag residue carbon (RC) was investigated in order to guide the large-scale application of RC as a potential gasification feedstock. Firstly, the effects of different CML loading amount and gasification temperature on RC reactivity were investigated. The structural evolution of RC loaded with CML in gasification was deeply analyzed by X-ray diffraction (XRD), scanning electron microscope (SEM) and in-situ high temperature stage coupled with optical microscope system (HSOM). The results showed that CML is rich in water-soluble alkali and alkaline earth metallic species, especially potassium, which can significantly improve the gasification reactivity of RC. The gasification activity increased with the increase loading amount of CML, but higher gasification temperature will weaken the catalytic ability of CML. The model free method can well predict the kinetics of RC gasification reaction. The existence of CML reduced the activation energy of gasification obviously. The activation energy of RC20CML was 100.96 kJ/mol, which was 37.81 kJ/mol lower than that of RC. Furthermore, the surface complexes produced during RC gasification were determined by temperature programmed desorption (TPD) technique. The results showed that CML loaded RC released more CO during TPD process, which indicated that CML promoted the formation of more active sites on the RC surface, thus accelerating the gasification reaction. This work will contribute to the classification and resource utilization of coal gasification fine slag.

在这项研究中，研究了鸡粪渗滤液（CML）在煤气化细渣残炭（RC）催化气化中的适用性，以指导 RC 作为潜在气化原料的大规模应用。首先，研究了不同CML负载量和气化温度对RC反应性的影响。通过X射线衍射(XRD)、扫描电子显微镜(SEM)和原位高温台结合光学显微镜系统(HSOM)深入分析了负载CML的RC在气化过程中的结构演变。结果表明，CML富含水溶性碱金属和碱土金属物种，尤其是钾，可显着提高RC的气化反应活性。气化活性随着 CML 加入量的增加而增加，但较高的气化温度会削弱CML的催化能力。无模型方法可以很好地预测RC气化反应的动力学。CML的存在明显降低了气化活化能。RC20CML 的活化能为 100.96 kJ/mol， 比RC低37.81 kJ/mol。此外，RC 气化过程中产生的表面复合物是通过程序升温脱附 (TPD) 技术确定的。结果表明，CML负载的RC在TPD过程中释放了更多的CO，这表明CML促进了RC表面更多活性位点的形成，从而加速了气化反应。该工作将有助于煤气化细渣的分类和资源化利用。