疏水缔合聚丙烯酰胺溶解槽内流动特性的数值模拟Numerical Simulation of Flowing Property in Hydrophobically Associating Polymer Dissolution Tank
谢明辉,周国忠,龙湘犁,虞培清
摘要(Abstract):
将疏水缔合聚丙烯酰胺AP-P4溶解过程划分为三种混合状态(搅拌槽中刚加入聚合物颗粒、溶胀刚结束和溶解完成),并采用计算流体力学方法分别对采用二斜叶桨式搅拌器XJD和新型翼型上推式搅拌器KCXU时溶解聚合物AP-P4的三种混合状态的流动进行了数值模拟,获得了两种搅拌器槽内的流场特性和XJD、KCXU搅拌器不同状态时的循环流量和功率消耗。结果表明:除第一种混合状态下的流体流速外,KCXU搅拌槽内的流体流速和循环流量要大于XJD槽内所产生的,说明KCXU搅拌器比XJD搅拌器具有更好的溶解均一化及更高的循环速率。搅拌器功率模拟值与实验数据偏差在16%以内。上述研究结果对于工业搅拌器的优化具有重要的意义。
关键词(KeyWords): 混合状态;计算流体力学(CFD);循环流量;搅拌器
基金项目(Foundation):
作者(Author): 谢明辉,周国忠,龙湘犁,虞培清
参考文献(References):
- [1]Han M,Xiang W T,Zhang J.Application of EOR technology by means of polymer flooding in Bohai oil fields[C]//International Oil and Gas Conference and Exhibition in China.Beijing:2006:1078-1083.
- [2]JIANG Bing(姜斌).Applied Study of New-Type Polymer Hydrolyzation Mixer and Numerical Simulation of the Non-Newtonian Fluid in a Stirred Tank(新型聚合物水解搅拌装置应用研究及搅拌流场的数值模拟)[D].Tianjing(天津):Tianjing University(天津大学),2005.
- [3]XIE Ming-hui(谢明辉),ZHOU Guo-zhou(周国忠),LIU Min(刘敏),et al.Impeller optimization for curing of polymer on offshore platform(海上平台聚合物熟化过程搅拌器的优化)[J].Chem Eng(化学工程),2009,37(7):30-33.
- [4]Zhou Guo-zhong,Xie Ming-hui,Liu Min,et al.Dissolution characteristics of hydrophobically associating polyacrylamide in stirred tanks[J].Chinese J Chem Eng,2010,18(1):170-174.
- [5]ZHOU Guo-zhong(周国忠),SHI Li-tian(施力田),WANG Ying-shen(王英琛).CFD prediction of flow near the agitator in stirred tank(搅拌槽内近桨区流动场的数值研究)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2002,l6(1):17-22.
- [6]Khopkar A R,Kasat G R,Pandit A B.Computational fluid dynamics simulation of the solid suspension in a stirred slurry reactor[J].Ind Eng Chem Res,2006,45(12):4116-4428.
- [7]Wen C Y,Yu Y H.Mechanics of fluidization[C]//Chem Eng Prog Symp Ser.New York:1966,62:100-111.
- [8]HOU Shuan-di(侯拴弟),WANG Ying-chen(王英琛),ZHANG Zheng(张政),et al.Turbulence flow generation by axial impeller(轴流式搅拌器湍流运动特性)[J].J Chem Ind and Eng(China)(化工学报),2000,51(2):259-263.
- [9]Aubin J,Mavros P,Fletcher D F,et al.Effect of axial agitator configuration(up-pumping,down-pumping,reverse rotation)on flow patterns generated in stirred vessels[J].Ind Eng Chem Res,2001,79(A):845-856.
- [10]Aubin J,Sauze N L,Bertrand J,et al.PIV measurements of flow in an aerated tank stirred by a down-and an up-pumping axial?ow impeller[J].Exp Therm Fluid Sci,2004,28(5):447-456.