摘要
通过对自建小型裂解装置实验数据的分析,建立了大庆重石脑油蒸汽热裂解反应8集总动力学物理模型,并用Matlab语言对Marquardt++法进行编程求取了该物理模型的动力学参数。通过对模型计算值与实验值的相对误差分析表明:原料集总因分得较少,相对误差较大,约为10%,但主要产品产率的最大相对误差不超过7%,其中乙烯产率的平均相对误差为1.62%,说明所建模型较好地反映了大庆重石脑油蒸汽裂解反应规律,可以较好地预测主要产品分布。
An 8-lump kinetic model is proposed for Daqing naphtha pyrolysis based on the analysis of experimental data obtained in a self-designed cracking experiment device. A computational program was written by Marquardt^＋＋ method and Matlab language and kinetic constants were calculated. The error analysis showed that most of the apparent activation energies are between 112 and 317 kJ·mol^-1 , the raw material lump relative error is approximately about 10%, while the relative error for the main target products is basically within 7%, in which the average relative error for ethylene yield is 1.62%. The proposed model can describe the reaction process of Daqing naphtha pyrolysis and predict the distribution of products.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2009年第11期2743-2748,共6页
CIESC Journal
关键词
石脑油
裂解
集总模型
动力学
乙烯
naphtha
pyrolysis
lumping model
kinetic
ethylene
