Abstract: The coal and heavy oil co-gasification process is introduced in this paper. The principle of this process and the thermodynamic characteristics are presented. The energy and mass balance calculations of coal and heavy oil co-gasification are made by using Aspen Plus. The results indicated that coal and heavy oil co-gasification can produce light olefins and synthesis gas，the content of light olefins（C₂H₄+ C₃H₆）is more than 15%，the content of synthesis gas（H₂ + CO）is no less than 60%，and the content of carbon dioxide is less than 1.5%，and the coking problem of heavy oil gasification can be resolved.

摘要： 分析了煤与重质油共气化过程和热力学特点，应用流程模拟软件Aspen Plus对焦炭和渣油系统进行了热力学能量和物料平衡计算，从热力学角度进行了可行性研究。结果表明，煤与重质油共气化技术可以制备低碳烯烃并联产合成气，低碳烯烃（C₂H₄＋C₃H₆）含量大于15%，合成气（H₂＋CO）含量大于60%，CO₂含量小于1.5%，且能有效地解决重质油裂解造成的结焦问题。