Coking dry gas is a kind of refinery dry gas, which is rich in H₂ and light hydrocarbon resources, but it’s often used as fuel, resulting in inefficient utilization of dry gas resources and a large amount of air pollutants emissions. Solid oxide fuel cell can efficiently convert the chemical energy of hydrogen into electricity. Therefore, this work establishes a model of a power generation process of coking dry gas reforming coupled with the solid oxide fuel cell and organic Rankine cycle. Process simulation is used to analyze the influence of key operating parameters on the system output performance. The obtained results indicate that the net electrical efficiency of the proposed system is increased from 45.45 % of the coking dry gas direct combustion for power generation system to 56.89 %. In terms of environmental impact, the CO₂ emissions of the new system is 373.31 kg/MWh, 20.12 % lower than that of the direct combustion process. Besides, the effect of air excess ratio on system performance is evaluated and the net electrical efficiency of the proposed system increases to 63.73 % as the air excess ratio decreases from 2.0 to 1.1. The above results show that the proposed hybrid power system can provide an effective way for efficient and clean utilization of coking dry gas.

焦化干气是一种富含H _{2的炼油厂干气}和轻烃资源，但常被用作燃料，造成干气资源利用效率低下，大气污染物排放量大。固体氧化物燃料电池可以高效地将氢的化学能转化为电能。因此，本工作建立了焦化干气重整耦合固体氧化物燃料电池和有机朗肯循环的发电过程模型。过程仿真用于分析关键运行参数对系统输出性能的影响。所得结果表明，该系统的净电效率由焦化干气直接燃烧发电系统的45.45%提高到56.89%。在环境影响方面，CO ₂新系统的排放量为373.31 kg/MWh，比直接燃烧过程低20.12%。此外，评估了空气过剩率对系统性能的影响，当空气过剩率从 2.0 降低到 1.1 时，所提出系统的净电效率增加到 63.73%。上述结果表明，所提出的混合动力系统可为焦化干气的高效清洁利用提供有效途径。