Abstract:With extensive application of ammonia/tar separation process-tank in tank in the modern coking industry, its core equipment-tar residue crushing pump needs to be investigated thoroughly. Firstly, the structure and working principle of the crushing pump are introduced, and then the 3D fluid domain model of a crushing pump along with mesh is generated in Pro/E. Secondly, the fluid flow and performance of the pump are predicted by using CFD method, the performance is compared with the experimental data; besides mesh-independence is checked and an optimal mesh size is settled. It is turned out that the predicted performance agrees well the observation, and the design of the pump needs to be modified to meet the head required. Based on the fluid flow fields simulated, there are full of vortices at the entrance of the impeller and inside the casing. The vortices generated in the pump are helpful to crush tar residues; unfortunately they can facilitate to aggravate wear of the through-flow components as well. As a result, the components should be made of excellent wear-resistant materials to extend the pump reliability and life-span. This study has some reference value for the design and manufacture of tar residue crushing pump.
许万国. 焦油渣切割泵内部流场分析[J]. 排灌机械工程学报, 2014, 32(9): 754-758.
Xu Wanguo. Analysis of internal flow field in tar residue crushing pump. Journal of Drainage and Irrigation Machinery Engin, 2014, 32(9): 754-758.
[1]陈玉村,钱虎林,邱全山.降低7.63米焦炉炉顶空间温度的方法[J].燃料与化工,2010,41(6):12-13. Chen Yucun, Qian Hulin, Qiu Quanshan. Method for reducing 7.63 meters coke oven roof space temperature[J].Fuel & Che-mical Processes,2010,41(6):12-13.(in Chinese)[2]韩党锋,张显. 7.63 m焦炉氨水系统焦油渣预分离新工艺[J].燃料与化工,2013, 44(2):58-59. Han Dangfeng, Zhang Xian. New process of tar-ammonia pre-separation for 7.63 m battery[J]. Fuel & Che-mical Processes,2013, 44(2):58-59.(in Chinese)[3]魏新利,李慧,张军.计算流体动力学(CFD)在化工领域的应用[J].化工时刊,2006,20(2):63-64. Wei Xinli, Li Hui, Zhang Jun. Applications of computational fluid dynamics in chemical engineering field[J].Chemical Industry Times,2006,20(2):63-64.(in Chinese)[4]王秋红.螺旋离心泵内固液两相流场的CFD数值模拟[D].兰州:兰州理工大学能源与动力工程学院,2005.[5]田莹莹.焦油渣切割泵内部流场的数值模拟[D].镇江:江苏大学流体机械工程技术研究中心,2012.[6]许万国,巫建波,李强.焦油切割泵固液两相流数值分析[J]. 燃料与化工,2013,44(5):54-56. Xu Wanguo, Wu Jianbo, Li Qiang. The numerical si-mulation of solid-liquid two-phase flow of cutting pump[J]. Fuel & Chemical Processes,2013,44(5): 54-56.(in Chinese)[7]王顺兴.金属热处理原理及工艺[M].哈尔滨:哈尔滨工业大学出版社,2009.[8]王文全,张立翔,闫妍.节能离心泵全流道内部湍流的动态大涡模拟[J].流体机械,2008,36(1):14-18. Wang Wenquan, Zhang Lixiang, Yan Yan. Dynamic large eddy simulation of turbulent flow in an energy-saver centrifugal pump[J].Fluid Machinery, 2008,36(1):14-18.(in Chinese)[9]王春林,马庆勇,邢岩.梯形迷宫螺旋泵内部流动数值计算及性能预测[J].江苏大学学报:自然科学版,2008,29(2):138-142. Wang Chunlin, Ma Qingyong, Xing Yan. Numerical simulation and performance prediction inside trapeziform labyrinth screw pump[J]. Journal of Jiangsu University:Natural Science Edition, 2008,29(2):138-142.(in Chinese)[10]谈明高,刘厚林,吴贤芳.基于FLUENT的离心泵水力性能预测技术[J].排灌机械,2008,26(3):22-25. Tan Minggao,Liu Houlin,Wu Xianfang. Hydraulic chara-cteristic prediction technique centrifugal pumps based on FLUENT[J].Drainage and Irrigation Machinery,2008,26(3):22-25.(in Chinese)[11]石磊.基于Richardson外推法的CFD网格误差研究[D].北京:华北电力大学能源动力与机械工程学院,2011.[12]郑双凌,马吉明,陈浩波.进水口旋涡特性及临界淹没水深的研究进展[J].南水北调和水利科技,2012,8(5):129-132. Zheng Shuangling, Ma Jiming, Chen Haobo. Review of vortexes and critical submergence at intakes[J].South to North Water Transfers and Water Science & Technology,2012,8(5):129-132.(in Chinese)[13]倪汉根,陈霞.平面旋涡(中心型奇点)水力特性的探讨[J].水利学报,1998(11):50-56. Ni Han′gen,Chen Xia. Discussion on hydraulic properties of plane vortex with standing center[J].Journal of Hydraulic Engineering,1998(11):50-56.(in Chinese)