The influence of the properties of solid particles in slurry on the absorption of CO_(2) in the slurry was inves-tigated in a stirred thermostatic reactor.The absorption experiments were carried out in three different...The influence of the properties of solid particles in slurry on the absorption of CO_(2) in the slurry was inves-tigated in a stirred thermostatic reactor.The absorption experiments were carried out in three different slurries con-sisting of water,cyclohexane and soybean oil,respectively,and three kinds of solid particles(active carbon,active alu-mina and silica gel)were incorporated into each of the above mentioned slurries separately.The experimental results show that the active carbon particles could enhance the absorption rate of gaseous CO_(2) in the aqueous slurry,while in the cyclohexane slurry,active carbon particles indi-cated no the absorption enhancement effect.However,it was observed that the active alumina and silica gel particles could enhance the absorption rate of CO_(2) in the cyclohex-ane slurry.These phenomena indicate that the solid part-icles,which could enhance the gaseous CO_(2) absorption rate,should possess two properties simultaneously,i.e.they rejected the solvent and had higher adsorption capacity for the solute.The experimental results also show that,as for those solid particles which could enhance the gas absorption rate,the enhancement increased quickly with the increase of solid concentration in slurry at first,and then reached a constant value gradually.It was also found that the enhancement factor was related to the coverage fraction of solid particles on the gas-liquid interface,and due to the reduction of surface fraction with increasing stirred speed,the enhancement factor decreased.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.20176036).
文摘The influence of the properties of solid particles in slurry on the absorption of CO_(2) in the slurry was inves-tigated in a stirred thermostatic reactor.The absorption experiments were carried out in three different slurries con-sisting of water,cyclohexane and soybean oil,respectively,and three kinds of solid particles(active carbon,active alu-mina and silica gel)were incorporated into each of the above mentioned slurries separately.The experimental results show that the active carbon particles could enhance the absorption rate of gaseous CO_(2) in the aqueous slurry,while in the cyclohexane slurry,active carbon particles indi-cated no the absorption enhancement effect.However,it was observed that the active alumina and silica gel particles could enhance the absorption rate of CO_(2) in the cyclohex-ane slurry.These phenomena indicate that the solid part-icles,which could enhance the gaseous CO_(2) absorption rate,should possess two properties simultaneously,i.e.they rejected the solvent and had higher adsorption capacity for the solute.The experimental results also show that,as for those solid particles which could enhance the gas absorption rate,the enhancement increased quickly with the increase of solid concentration in slurry at first,and then reached a constant value gradually.It was also found that the enhancement factor was related to the coverage fraction of solid particles on the gas-liquid interface,and due to the reduction of surface fraction with increasing stirred speed,the enhancement factor decreased.
