等离子体裂解煤制乙炔工艺中淬冷过程的模拟

The Simulation of Quenching Process in Acetlene Production by Plasma Pyrolysis of Coal

等离子体裂解煤制乙炔工艺有较大的工业价值,淬冷工段是保证乙炔收率的关键工段之一。研究通过自主设计的实验装置,进行等离子体裂解煤粉制乙炔的实验。以热力学计算、淬冷时温度变化规律和淬冷时裂解气主要化学反应动力学的计算为基础,建立等离子体裂解煤制乙炔体系淬冷过程的数学模型。进一步根据所建立的数学模型探究淬冷过程主要参数如淬冷速率、淬冷前温度对淬冷后组分组成的影响,并给出各参数的合理范围,为淬冷过程的优化提供重要的参考。

Plasma pyrolysis processes have great industrial value in acetylene production form coal,while quenching is one of the key sections to achieve high acetylene yield.Plasma pyrolysis of coal powder to produce acetylene was studied in a home-designed experimental setup.A mathematical model of the quenching process was proposed based on thermodynamic simulation,temperature distribution and kinetic study results of the main chemical reactions.Furthermore,major factors on quenching such as quenching rate and pre-quenching temperature were simulated based on the mathematical model,and reasonable ranges of these parameters were provided,which are important references for the optimization of quenching processes.