高校化学工程学报Issue(5)：805-810,6.DOI:10.3969/j.issn.1003-9015.2013.05.013
BP型抑制剂抑制焦炭劣化反应动力学
Kinetics of Inhibition Reaction of Coke Deterioration by BP Inhibitor
摘要
Abstract
In order to improve the inhibition technologies of coke deterioration, the kinetic data of the inhibition reaction of coke deterioration by using the BP inhibitor were obtained from thermogravimetric analysis, and based on the unreacted shrinking core model at different temperatures, the obtained data were used to establish the reaction kinetic models. The model parameters were determined and the statistical tests show that the models are significant and credible. According to the Arrhenius equation the activation energy Ea and the effective diffusion activation energy ED of the inhibition reaction of coke samples loaded BP inhibitor are 285.0 kJ×mol-1 and 164.6 kJ×mol-1, respectively, which are both higher than that of the blank coke samples, 142.0 kJ×mol-1 and 96.3 kJ×mol-1, respectively. Based on the kinetic models, the relative resistances of the external diffusion mass transfer, ηG/∑η, the relative resistances of the internal diffusion mass transfer, ηD/∑η, and the relative resistances of interfacial chemical reaction,ηC/∑ηwere calculated. The calculated results reveal that the inhibition reaction of sample S0 is mainly affected by interfacial chemical reaction and external diffusion, while the inhibition reaction of sample SBP is mainly affected by internal diffusion and interfacial reaction at the beginning of the reaction, and then both samples are affected byηG,ηD andηC simultaneously. In addition, the inhibition reaction is affected by the interfacial chemical reaction at lower reaction temperature, and then theηC/∑ηdecreases with the reaction temperature increase.关键词
焦炭/BP型抑制剂/抑制劣化反应/未反应核收缩模型/动力学Key words
coke/BP inhibitor/inhibition deterioration reaction/unreacted shrinking core model/kinetics分类
化学化工引用本文复制引用
张泽志,王文昌,王留成,王福安..BP型抑制剂抑制焦炭劣化反应动力学[J].高校化学工程学报,2013,(5):805-810,6.基金项目
河南省重大公益性科研项目(08110911800)。 （08110911800）
