Kinetic modeling of liquefied petroleum gas (LPG) reduction of titania in MATLAB

15th Asian Congress of Fluid Mechanics

物理学;力学

Yin, Tan Wei^1 ; Ramakrishnan, Sivakumar^1 ; Rezan, Sheikh Abdul^1 ; Noor, Ahmad Fauzi Mohd^1 ; Shoparwe, Noor Izah^1 ; Alizadeh, Reza^2 ; Roohi, Parham^2

School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal, Penang

14300, Malaysia^1

Sahand University of Technology, Iran^2

关键词: Argon gas mixtures;    Kinetic modeling;    Kinetic modelling;    Liquefied petroleum gas (LPG);    Reduction temperatures;    Shrinking core model;    Temperature range;    Thermal fluctuations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/822/1/012063/pdf
DOI  :  10.1088/1742-6596/822/1/012063

学科分类：力学，机械学

来源: IOP

【 摘 要 】

In the present study, reduction of Titania (TiO2) by liquefied petroleum gas (LPG)-hydrogen-argon gas mixture was investigated by experimental and kinetic modelling in MATLAB. The reduction experiments were carried out in the temperature range of 1100-1200°C with a reduction time from 1-3 hours and 10-20 minutes of LPG flowing time. A shrinking core model (SCM) was employed for the kinetic modelling in order to determine the rate and extent of reduction. The highest experimental extent of reduction of 38% occurred at a temperature of 1200°C with 3 hours reduction time and 20 minutes of LPG flowing time. The SCM gave a predicted extent of reduction of 82.1% due to assumptions made in the model. The deviation between SCM and experimental data was attributed to porosity, thermodynamic properties and minute thermal fluctuations within the sample. In general, the reduction rates increased with increasing reduction temperature and LPG flowing time.