Improving fluidization behavior of cohesive Ca(OH)2 adsorbent using hydrophilic silica nanoparticles:Parametric investigation

作     者：O.Amjadi M.Tahmasebpoor 

作者机构：Department of Chemical and Petroleum EngineeringUniversity of TabrizTabrizP.O.Box 51666-16471Iran 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2018年第16卷第5期

页      面：52-61页

核心收录：

学科分类：08[工学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：University of Tabriz  (S/2585) 

主　　题：Fluidization Ca(OH)2 Sihca nanoparticles Carbon dioxide adsorption Taguchi method 

摘      要：Hydrophilic silica nanoparticles were used to enhance the fluidization behavior of Ca(OH)2 powder and its CO2 *** strong electrostatic forces were decreased by fluidizing adsorbents modified by hydrophilic SiO2 in the presence of alcohol vapors.A Taguchi experimental design was used to identify the optimal characteristic parameters of the modified adsorbents to improve their *** parameters,including SiO2mass percentage,type of alcohol,sieved size of SiO2,and sieved size of Ca(OH)2 particles,were selected for conducting experiments in a fluidized *** of variance showed that sieved size and mass percentage of SiO2 nanoparticles (accounting for 73.88% and 19.01% of the total contributions,respectively)were the most significant parameters determining fluidization quality of the modified *** experiments confirmed the effectiveness of these two parameters. Based on bed expansion results,fluidization of Ca(OH)2 modified by hydrophilic silica nanoparticles in the presence of alcohols was considerably better than that modified by hydrophobic ***2 adsorption tests,which were carried out by measuring the pH variation of pure water during adsorption, revealed that improved Ca(OH)2 fluidization enhanced the carbonation reaction.