水溶液中硫酸钾晶体生长动力学  

CRYSTAL GROWTH KINETICS FROM AQUEOUS SOLUTION OF POTASSIUM SULFATE

作　　者：陈勇[1] 邵曼君[1] 陈慧萍[1] 

机构地区：[1]中国科学院过程工程研究所多相反应开放实验室,北京100080

出　　处：《化工学报》2003年第12期1766-1769,共4页CIESC Journal

摘　　要：The single crystal growth rates of potassium sulfate in pure aqueous solution under different conditions were determined by photomicrography in a flow system for crystal growth. The effects of the main controlling factors, such as supersaturation, crystal size, solution velocity and crystal growth temperature, on crystal growth rates of potassium sulfate were discussed in detail by using non-linear regression from the experimental data, and several empirical relationships were given.The results showed that the growth rates of crystals increased with supersaturation, crystal size, solution velocity and temperature. Moreover supersaturation was the most important controlling factor influencing growth rates of crystals,crystal size and solution velocity were the secondary and temperature was the least. Furthermore, It was found that the growth rate of crystals along the crystallographic axis was higher than that along the in the same condition. The effect of every factor on crystal growth rates along the crystallographic axis was stronger than that along the .The single crystal growth rates of potassium sulfate in pure aqueous solution under different conditions were determined by photomicrography in a flow system for crystal growth. The effects of the main controlling factors, such as supersaturation, crystal size, solution velocity and crystal growth temperature, on crystal growth rates of potassium sulfate were discussed in detail by using non-linear regression from the experimental data, and several empirical relationships were given.The results showed that the growth rates of crystals increased with supersaturation, crystal size, solution velocity and temperature. Moreover supersaturation was the most important controlling factor influencing growth rates of crystals,crystal size and solution velocity were the secondary and temperature was the least. Furthermore, It was found that the growth rate of crystals along the crystallographic axis was higher than that along the in the same condition. The effect of every factor on crystal growth rates along the crystallographic axis was stronger than that along the .

关 键 词：硫酸钾 晶体生长 晶体生长速率 

分 类 号：TQ026.5[化学工程]