摘要
采用Gibbs自由能极小化法对等离子体裂解煤制乙炔碳-氢-氧-氩多相多组分体系的化学反应平衡组成进行了计算,结果表明,在C-H-Ar平衡体系中,惰性组分氩的存在降低了乙炔的最高平衡产率,氩在5000K以下基本不电离,典型组成为C:H:Ar=1:13.39:0.6的液化石油气裂解反应体系的最佳反应温度区间为2800～3200K.在C-H-Ar-O多相平衡体系中,氧作为杂质同样降低了乙炔的平衡产率,体系中氧以CO的形式存在,典型组成为C:H:O:Ar=1:8.638:0.160:3.339的煤裂解反应体系的最佳反应温度区间为3000～3200K.
In order to find the temperature range and initial reactant ratio for the maximum yield of acetylene, chemical thermodynamic equilibrium of heterogeneous multi-component C-H-O-Ar system was studied. All of the thermodynamic equilibrium calculations were based on minimization of Gibbs free energy. Computations were performed for the temperatures from 500 to 5 000 K at an interval of 100K. The results show that existence of argon reduces the maximum equilibrium yield of acetylene in C-H-Ar system. The best temperature range for acetylene production from LPG pyrolysis by hydrogen-argon plasma is 2 800～3 200 K for the system with C：H：Ar=1：13.39：0.6. In C-H-Ar-O system, oxygen, as impurity, also reduces the maximum equilibrium yield of acetylene. Oxygen element always exists in the form of carbon monoxide. The best temperature range for acetylene production from coal pyrolysis by hydrogen-argon plasma is 3 000～3 200 K for the system with C：H：O：Ar=-1：8.638：0.160：3.339.
出处
《过程工程学报》
CAS
CSCD
北大核心
2009年第1期79-83,共5页
The Chinese Journal of Process Engineering
基金
国家重点基础研究发展计划(973)基金资助项目(编号:2005CB221202)
山东省优秀中青年科学家科研奖励基金资助项目(编号:2007BS08009)
关键词
热力学平衡
多相多组分
Gibbs自由能
等离子体
乙炔
thermodynamic equilibrium
heterogeneous multi-component
Gibbs free energy
plasma
acetylene
