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等离子体裂解煤制乙炔碳-氢体系的热力学平衡分析 被引量:6

Thermodynamic Analysis of the Hydrogen-Carbon System for Acetylene Production by Plasma
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摘要 碳(氢多相多组份体系的化学反应平衡组成可用Gibbs自由能极小化法求得. 计算表明:把C(H体系视为单相体系是不合理的,只有在多相体系下的计算结果才是真正意义上的热力学平衡组成,两种体系在生成乙炔的最佳温度范围和平衡组成两方面都有较大的差别. 得出C(H体系中生成乙炔的最佳温度范围是3400(3800 K的高温区域. 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 system was studied. All the thermodynamic equilibrium calculations are based on minimization of Gibbs free energy in the temperatures range from 500 K to 5000 K at intervals of 100 K. All species for which data are available in the JANAF Thermodynamic Tables are included in the C-H system. The Gibbs free energy minimization is expressed as a nonlinear optimization problem including equation and inequality constraints. The results show that it is irrational to consider the C-H system as homogeneous. Only the results from a heterogeneous system is realistic and reasonable and the best temperature range for acetylene formation is 3400~3800 K.
出处 《过程工程学报》 CAS CSCD 北大核心 2002年第2期112-117,共6页 The Chinese Journal of Process Engineering
基金 国家自然科学基金资助项目(编号: 19935010) 国家重点基础研究专款资助项目(编号: G19990221)
关键词 等离子体 裂解 碳-氢体系 乙炔 热力学平衡 多相多组份 Gibbs自由能 acetylene thermodynamic equilibrium heterogeneous multi component Gibbs free energy GRG method
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