Research on pyrolytic characteristics of rice husk and lignite

The pyrolytic characteristics of rice husk and lignite were investigated by using the TG-DSC.Result demonstrated that the thermal weight loss of rice husk was more intense than lignite.The co-pyrolysis weight loss process was almost the summation of rice husk and lignite pyrolysis weight loss process respectively.The absorbing and releasing heat of pyrolysis prosess was analyzed through DSC curves.There needed more heat-absorption at high temperature pyrolytic process during co-pyrolysis.Gas products content of pyrolytic system were also determined by gas chromatography as the temperature changed.Variations of gas products were analyzed combining TG curves.The results showed that H2 and CH4 content had the similar trend with the temperature grew when pyrolysised separately.CO content was more in rice husk pyrolysis gas product than lignite.Overall,there were heat exchange and interactions between husk and lignite during co-pyrolysis though the co-pyrolysis products were just the summation of pyrolysis separately.