DYK Type Air Heater

 

DYK Type Air Heater

I. Uses and Features

DYK Type Air Heater is a new type of heating equipment successfully developed by our factory specifically for the ash removal system of coal-fired power plants. It is suitable for heating the fluidizing air of air conveying troughs, the fluidizing air of electrostatic precipitator hoppers, and the fluidizing air of ash storage silos in power stations. The equipment consists of two parts: the air electric heater body and the control system. The heating element uses 1Cr18Ni9Ti stainless steel seamless tube as the protective sheath, 0Cr27Al7MO₂ high-temperature resistance alloy wire, and crystalline magnesium oxide powder, formed through a compression process. The control part adopts advanced digital circuits, integrated circuit triggers, high reverse voltage thyristors, etc., to form an adjustable temperature measurement and constant temperature system, ensuring the normal operation of the electric heater. 
  · The heating element adopts a straight tube type instead of a U-shaped structure, and can be easily installed and removed with a special wrench. 
  · The electric heating tube has good thermal conductivity and excellent insulation. A deflector is provided inside the heater for uniform heating. 
  · The air electric heater control cabinet has interlocking control functions with the fluidizing fan, as well as local control and remote control interfaces. When the equipment suddenly stops and restarts, the control cabinet can automatically adjust smoothly.
II. Main Technical Parameters
2.1 Model: DYK15 ~ 90 (II)
2.2 Rated Power: 15kW ~ 90kW
2.3 Input Voltage: 380V±5% (three-phase four-wire)
2.4 Temperature Control Accuracy: Class 0.5
2.5 Cold Insulation Resistance: ≥2MΩ