The modified Fluid and Solid reaction model and experimental verification
The shrinking core model(SCM) is widely used to model fluid-solid reaction in many studies. Based on the shrinking core model incorporated particle size distribution(PSD) and the characteristic of products, a modified model has been set to simulate the reaction process of fluid and solid. Limestone dissolution is a typical liquid-solid reaction, and experimental work has been done with five kinds of limestone from different producing area in china. The dissolution process of limestone can be predicted. In the model, two parameters the comprehensive reaction coefficient k and total reaction rate constant km are defined. By chosen proper value, the model can well describe the limestone dissolution process in acid. Furthermore, km is dependent of mass transfer in fluid and chemical reaction but independent of properties of solid and fluid, k and km can be deduced from experimental results by numerical method, and km is similar for different samples with the same reaction condition. The model established a relationship between micro parameter and macro experimental data.
Fluid-solid reaction shrinking core model reaction rate constant limestone dissolution
N.Li Q.Zhou T.M Xu S.E Hui Q.X.Zhao
State Key Laboratory of Multiphase Flow, Xian Jiaotong University, China
国际会议
西安
英文
219-224
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）