Esinye isizalwane seZimbabwe esihlala eGaborone, uMnu. Mthabisi Ndlovu, laye uthi kumgceke ukuthi, ngokuphuma kuka Kgosi, inengi li jabule kugoqela abeZimbabwe. ② gas humidity. Dust gas is divided into three states according to the relative humidity: when the relative humidity is below 30%, it is dry gas, which is easy to generate static electricity. Like the high-humidity gas, the dust is easy to attach and difficult to clean. Relative humidity of 30% to 80% for the general state, the best working condition of the precipitator. When the relative humidity of gas is above 80%, it is high-humidity gas. When the high-humidity gas is in the high temperature state, especially the gas containing SO3 in the dust-containing gas will cause condensation. This will not only make the bag surface fouling, clogging, but also corrosion of structural materials, dust removal device, filter bag, etc. caused serious damage, it is necessary to pay special attention to the selection of wet gas bag should pay attention to the following points: