生物质和高硫劣质煤混烧灰熔融特性研究

对生物质和煤混烧特性的研究受到国内外学者的广泛重视。对生物质与高硫劣质煤混烧灰的熔融特性进行研究，测量了灰熔点，并利用热重一差示扫描量热（thermo．gravimetry—differentialscanningcalorimetry,TG—DSC）方法对灰的熔融过程进行研究。实验结果表明，混烧生物质能降低灰熔点，生物质混烧比例越高，灰熔点下降幅度越大。由于生物质中灰分含量远小于高硫劣质煤，混烧灰的灰熔点温度主要受煤灰的影响。由于灰的组成成分及其含量的差异，煤灰、生物质灰在实验温度范围，TG—DSC曲线有较大差异。在低混烧比时，混烧灰的TG—DSC曲线基本体现煤灰的熔融特性。随着混烧比例的提高，TG—DSC曲线上生物质的影响变得明显。

Study on Fusion Characteristics of Ash Produced by Co-combustion Biomass and High-sulfur Low Grade Coal

The study about co-combustion characteristics of biomass and coal has been paid more attention by the domestic and foreign scholars.Fusion characteristics of ash produced by co-combustion biomass and high-sulfur low grade coal were researched.Ash melting point temperature was measured.The process of ash melting was studied by the method of thermogravimetry-differential scanning calorimetry(TG-DSC).The results of experiments show that ash melting point temperature drop when co-firing biomass.With the increas...