Hot Oil Boiler with Rotary Grate

In the Rotary Grate combustion system, coal advances toward the furnace at the grate’s rotation speed from the moment it is discharged from the service bunker onto the grate. As soon as it enters the furnace, under the effect of radiant heat, coal first releases its moisture; as temperature increases, it gasifies and begins releasing volatile combustible hydrocarbons. In the following sections of the grate, fixed carbon combustion is completed. Combustion of all coal components continues until the end of the grate.

Since combustion inside the Thermal Oil Boiler is fully completed, the remaining slag amount is very low; it is discharged into the slag trough and removed from the system. All processes, from loading coal into bunkers to combustion and slag discharge, are carried out fully automatically via a PLC automation system. This ensures both high-efficiency combustion and very low emission values.