基于数值仿真开发的电解槽集气系统

利用FLUENT对电解槽烟气流动场和温度场进行数值模拟,并结合设计经验,成功开发出适用于SY系列电解槽的多段等量吸风集气烟道结构和双烟管技术。多段吸风集气烟道结构采用上烟道集气形式,在强化集气效果、均衡槽膛风压分布的同时,可大幅降低电解槽排烟量,使烟道阻力下降17%~27%。双烟管技术则在挪威海德鲁(HYDRO)和法国索罗斯(SOLIOS)的方案上进行改进,主、副烟管均由净化风机提供负压动力,进行开槽作业时,主副烟管同时集气,烟气量可瞬时增大2~3倍,有效控制电解车间的污染物无组织排放,达到了节能减排的目的。

Electrolytic Cell Off-gas Collection System Based on Numerical Simulation

Using FLUENT to simulate the flue gas flow field and temperature field of electrolytic cell, and combined with the design experience, the multi-stage equal air suction and gas collection flue structure and double flues technology suitable for SY series electrolytic cell were successfully developed. The structure of multi-stage air suction and gas collection flue adopts the form of upper flue gas collection. While strengthening the gas collection effect and balancing the wind pressure distribution in the tank chamber, it can greatly reduce the smoke exhaust volume of the electrolytic tank and reduce the flue resistance by 17%~27%. The double flues technology is improved on the schemes of HYDRO and SOLIOS. The main and auxiliary flues are provided with negative pressure power by the purification fan. During the slotting operation, the main and auxiliary smoke flues collect gas at the same time, and the amount of flue gas can be instantaneously increased by 2~3 times, so as to effectively control the unorganized emission of pollutants in the electrolysis workshop and achieve the purpose of energy conservation and emission reduction.