四氢萘选择性催化裂化反应动力学

STUDY ON KINETICS OF TETRAHYDRONAPHTHALENE SELECTIVE CATALYTIC CRACKING

在消除了内外扩散影响的小型固定流化床反应器中,考察了四氢萘在选择性催化裂化(HSCC)催化剂上,在470～515℃发生环烷环开环反应以及脱氢缩合反应的动力学规律。在四氢萘催化裂化反应途径的基础上,建立了四氢萘裂化双曲线型Langmuir-Hinshelwood(L-H)型五集总动力学模型,其中四氢萘环烷环开环反应活化能为56.06kJ/mol,而其脱氢缩合反应活化能为52.57kJ/mol。残差检验和统计检验结果表明,所得动力学模型合理、可靠,能够真实反映四氢萘选择性催化裂化反应特性。

The kinetics study of tetrahydronaphthalene ring opening and dehydrogenation-condensation reactions over highly selective catalytic cracking(HSCC)catalyst in a temperature range of 470-515℃in a small fixed fluidized bed(FFB)without internal and external diffusion effect was conducted.On the basis of cracking reaction pathway of tetrahydronaphthalene,a five-lumping Langmuir-Hinshelwood(L-H)type hyperbolic curve kinetic model for describing the tetrahydronaphthalene catalytic cracking was developed.The activation energy of the naphthenic ring opening reaction of tetrahydronaphthalene is 56.06 kJ mol,and dehydrogenation condensation reaction is 52.57 kJ mol.Residual error inspection and statistical test showed that the established model is acceptable and reliable,and can actually reflect the characters of the tetrahydronaphthalene catalytic cracking.