间歇排渣型气化系统的锁斗内部水循环流动  

Circulating Water Flow State in Batch Handling Lock Hopper

作　　者：汪洋[1] 于广锁[1] 代正华[1] 梁钦锋[1] 于遵宏[1] 

机构地区：[1]华东理工大学洁净煤技术研究所,上海200237

出　　处：《华东理工大学学报（自然科学版）》2006年第4期427-430,439,共5页Journal of East China University of Science and Technology

基　　金：上海启明星计划(03QF14013);国家高技术研究发展计划(2003AA521020);国家重点基础研究发展计划(973计划)(2004CB217700)

摘　　要：在由间歇排渣型锁斗和洗涤冷却室组成的模拟系统中，应用Realizable κ～ε湍流模型进行了非稳态计算，得到的计算结果和实际情况比较吻合。考察了多个因素对锁斗内平均温度的影响，模拟结果表明：锁斗循环水进口数对流场及温度场的分布影响较小；锁斗循环水量的影响很显著，循环水量越大，锁斗内湍流程度越剧烈，锁斗内平均温度越高；锁斗间歇排渣周期越长，锁斗内的平均温度越高；整个循环体系的热损失每增加0．5％，锁斗内的平均温度将下降5K左右。The realizable κ-ε turbulent model was used to carry out the unsteady calculation about the simulation system which was composed by batch handling lock hopper and scrubbing cooling chamber. The result of numerical simulation agrees well with the operation value. The average temperature in the lock hopper was studied according to a lot of factors. The results show that： the number of the circulating water inlet has slight effect on the average temperature in the lock hopper, while the circulating water flow plays an important role. The more the circulating water flow is, the more intense the turbulence is, and the higher the average temperature in the lock hopper is. The average temperature in the lock hopper becomes higher along with the extension of the lock hopper batch time. When the heat lost of the whole simulation system increase by 0.5% the average temperature would decrease about 5 K.

关 键 词：煤气化 锁斗 数值模拟 FLUENT 

分 类 号：TQ54[化学工程—煤化学工程]