摘要
针对硅铁电炉烟气治理与回收中存在的问题,采用微型旋风器作为烟气治理与回收中的预处理器。研究微型旋风分级器的分级性能,目的是利用微型旋风分级器将1.0μm左右的超细硅粉从烟气中分离出来。对3种微型旋风器在不同进口风速下进行实验研究。实验结果表明:分级效率与Stk数之间的关系在Rosin-Rammler坐标上为1条直线,在入口风速15-25 m/s范围内分级时,分级粒径可以达到0.8μm,分级粒径较小。设计合理的工艺流程,以微型旋风器为预处理器,而布袋除尘器可以将目标粉尘回收,满足市场对硅微粉的技术要求。
Mini-cyclone is used to treat the problems existed in ferrosilicon electric furnace flue gas control and recycling.The classification features of mini-cyclone are studied to separate super-line powder about 1.0 μm from the ferrosilicon electric furnace flue gas.Three kinds of mini-cyclones at different flow rates are studied.The results show that classification efficiency in cyclone is related to stokes number and it is a linear function of stokes number in the Rosin-Rammler coordinates;when classifying at the entrance air speed of 15 - 25 m/s, the cutting diameter can reach 0.8μm and it is small. Mini - cyclone is used for pretreatment in designing a rational technical flow while bag house filter can collect target powder and the final products can satisfy the requirement of the market.
出处
《工业安全与环保》
2007年第11期1-2,共2页
Industrial Safety and Environmental Protection
基金
国家高技术研究发展计划项目(2002AA642010)
关键词
微型旋风器
超细硅粉
分级粒径
袋式除尘器
mini-cyclones fine silicon-powder cutting diameter bag house filter
