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›› 2002, Vol. 2 ›› Issue (2): 0-0.

• 2 •    

等离子体裂解煤制乙炔碳-氢体系的热力学平衡分析

陈宏刚，谢克昌   

  1. 太原理工大学一碳化学与化工国家重点实验室, 山西 太原 030024
  • 出版日期:2002-04-20 发布日期:2002-04-20

Hydrothermal Modification of Mg(OH)2 Particles in NaOH Solution

XIANG Lan, JIN Yong-cheng, JIN Yong   

  1. State Key Lab. C1 Chemistry & Technology, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
  • Online:2002-04-20 Published:2002-04-20

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被引次数

65

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.

关键词: 乙炔, 热力学平衡, 多相多组份, Gibbs自由能, 广义简约梯度算法(GRG)法

Abstract: 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.

Key words: magnesium hydroxide, hydrothermal modification, sodium hydroxide, concentration, OH-

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