Electric heater(air heater) is a new type heating equipment especially for removing dust of coal generating plant, apply in gasification heating of air slide for generating plant., dust hopper gasification of precipitator and gasification heating of dust silo. It is composed of the body of air heater and control system etc. Heating parts is used 1Cr18Ni9Ti stainless steel for protection sleeve pipe. 0Cr27Al7MO2 is high temperature and resistance Pt wire and crystal MgO powder. Via compressed process, control part is used advanced digital, integration circuit trigger, high pressure silicate control etc adjustable measuring temperature and constant temperature, guarantee normal driving of electric heater. Heating element will use straight pipe and replace U structure. Use special spanner for installation and dismantling easily.Control cabinet of Air heater and gasification fan has the function of interlock control, local control and remote control. When the equipment stops suddenly, restart it and control cabinet may be adjusted automatically.