Two butterfly valves or regulating valves are used to flexibly regulate the temp. of fume from outlet of the heater to the third stage of cyclone separator to make it in optimal state.

• 设有两个蝶阀或调节阀，可以灵活地调节取热器出口进第三级旋风分离器的烟气温度，使之达最佳状态。