Synergistic effects from fast co-pyrolysis of low-rank coal with lignin via on-line mass spectrometry were explored. Iso-conversional method was used to obtain frequency factor and activation energy of main gaseous products. The morphology evolution of both individual and co-pyrolysis char was analyzed via fractal theory quantificationally. The results indicated that various synergistic effects were found from the distribution and composition of products. CO and CO₂ were the main content of the gaseous products, and the content of CO from lignin increased with the temperature. Lignin promoted the generation of tar and inhibited the formation of gaseous products during fast co-pyrolysis, which reflected different synergistic effects, respectively. Positive synergistic effects were observed from the component proportion of CH₄ as the temperature increasing higher than 600 °C. Kinetic analysis indicated that activation energy for H₂ from lignin and low-rank coal was 32.21 and 59.90 kJ/mol, and higher temperature would be beneficial for H₂ formation. Fractal analysis indicated that lignin promoted the surface morphology of co-pyrolysis char to become more complicated, with the fractal dimension of individual char less than those of co-pyrolysis char.

通过在线质谱研究了低级煤与木质素快速共热解的协同效应。采用等转化法获得主要气态产物的频率因子和活化能。通过分形理论定量分析了单个和共焦炭的形态演变。结果表明，从产品的分布和组成中发现了各种协同作用。CO和CO ₂是气态产物的主要含量，木质素中的CO含量随温度的升高而增加。木质素在快速共热解过程中促进了焦油的生成并抑制了气态产物的形成，分别反映了不同的协同作用。当温度高于600°C时，从CH ₄的组分比例中观察到积极的协同作用。动力学分析表明，木质素和低级煤对H _2的活化能分别为32.21和59.90 kJ / mol，较高的温度对H ₂有利。编队。分形分析表明，木质素促进了共热解焦炭的表面形态变得更加复杂，单个炭的分形维数小于共热解炭的分形维数。