锅炉用电袋复合除尘器系统安全性研究

RESEARCH ON SYSTEM SAFETY OF THE ELECTROSTATIC FABRIC FILTER FOR BOILERS

建立电袋烟气温度测试装置,通过实验选择适合模拟温度测试的测温探头和控制方式,进行旁路烟道、喷水降温、掺冷风和低压(温)省煤器的开发以保护滤袋免受高温破坏,同时开发滤袋清灰压力监测和预涂灰系统,并通过除尘器旁路阀和提升阀相互联动和连锁的实验,开发了防止烟气气路突变的控制技术,实现除尘器系统自身安全和锅炉系统的安全保护。

After building up the testing equipments of the gas temperature of electrostatic fabric filter,the suitable detectors and controlling method were selected through the simulation of flue gas temperature. For keeping filter bag from damage by high temperature flue gas,the technology of bypass,spray cooling,cold air mixing and low temperature（ pressure）economizer were developed. We also developed the system of monitoring the pressure of dust cleaning and pre-coating for filter bag. Test of interactive linkage between bypass valve and lift valve were also carried out,to prevent the flue gas path from saltation,realizing the safty protection of the system of the bag filter as well as the boiler.