Abstract Microwave pyrolysis has been widely studied as a new type of coal thermal processing. In this research, we applied different amounts of MoS2 to the coal microwave pyrolysis and observed the consequent product effects to see if a higher pyrolysis efficiency and tar quality can be achieved. The catalytic action of MoS2 in solid, liquid, and gas products was further studied using both conventional and microwave pyrolysis, and a synergistic mechanism of microwave and MoS2 for coal pyrolysis was proposed. In a self-developed coal-gas microwave co-pyrolysis system, Proximate and ultimate analysis methods, X-ray diffraction, Scanning electron microscopy, Energy dispersive spectrometry, Fourier transform infrared spectroscopy, Gas chromatography–mass spectrometry and Gas analyzer were all employed to test and analyze pyrolysis products. The experimental results showed that when the amount of MoS2 was 8.3%, in microwave pyrolysis, the yield of liquid product was 28.4% with the light oil yield of 67.55%, and the yield of hydrogen was 22.19%. Compared with conventional pyrolysis, conventional pyrolysis with 8.3%MoS2 and microwave pyrolysis, a tighter structure of solid product, a higher yield of liquid product with an obvious light oil content increase could be obtained. The content of hydrogen in gas product decreased, while the valuable content of gas (CH4+CO+H2) and calorific value increased. The contrast experiments of coal pyrolysis showed that there was a synergetic effect of microwave and MoS2, and it improved the coal pyrolysis efficiency and tar quality.

中文翻译：

---

微波与二硫化钼在煤热解中的协同作用机制

摘要 微波热解作为一种新型的煤热加工方法得到了广泛的研究。在这项研究中，我们将不同量的 MoS2 应用于煤微波热解，并观察了随后的产品效果，以确定是否可以实现更高的热解效率和焦油质量。使用常规热解和微波热解进一步研究了MoS2在固、液和气体产物中的催化作用，并提出了微波和MoS2对煤热解的协同作用机制。在自主研发的煤气微波共热解系统中，采用近似分析法、极限分析法、X射线衍射法、扫描电镜法、能谱分析法、傅里叶变换红外光谱法、气相色谱-质谱法和气体分析仪等方法对测试和分析热解产物。实验结果表明，当MoS2用量为8.3%时，微波热解液体产物收率为28.4%，轻油收率为67.55%，氢气收率为22.19%。与常规热解、8.3%MoS2常规热解和微波热解相比，固体产物结构更紧密，液体产物收率更高，轻油含量明显增加。气体产品中氢气含量下降，而有价气体（CH4+CO+H2）和热值增加。煤热解对比实验表明，微波与二硫化钼存在协同作用，提高了煤热解效率和焦油质量。4%，轻油收率为67.55%，氢气收率为22.19%。与常规热解、8.3%MoS2常规热解和微波热解相比，固体产物结构更紧密，液体产物收率更高，轻油含量明显增加。气体产品中氢气含量下降，而有价气体（CH4+CO+H2）和热值增加。煤热解对比实验表明，微波与二硫化钼存在协同作用，提高了煤热解效率和焦油质量。4%，轻油收率为67.55%，氢气收率为22.19%。与常规热解、8.3%MoS2常规热解和微波热解相比，固体产物结构更紧密，液体产物收率更高，轻油含量明显增加。气体产品中氢气含量下降，而有价气体（CH4+CO+H2）和热值增加。煤热解对比实验表明，微波与二硫化钼存在协同作用，提高了煤热解效率和焦油质量。可以得到较高收率的液体产品，轻油含量明显增加。气体产品中氢气含量下降，而有价气体（CH4+CO+H2）和热值增加。煤热解对比实验表明，微波与二硫化钼存在协同作用，提高了煤热解效率和焦油质量。可以得到较高收率的液体产品，轻油含量明显增加。气体产品中氢气含量下降，而有价气体（CH4+CO+H2）和热值增加。煤热解对比实验表明，微波与二硫化钼存在协同作用，提高了煤热解效率和焦油质量。