This device recovers the sensible heat in the hot air with temperature of 250 C to 450 C from a sinter cooler. It comprises mainly; a)boiler/economizer, b)pure water feed device, c)deaerator, d)steam drum, etc.
After heat exchange with sintered ore of 500 C to 700 C in the cooler, the exhaust gas is introduced to the boiler/economizer to generate steam and is recycled to the cooler.
This is a waste gas sensible heat recovery system from sinter cooler to generate electric energy. The system is composed of dust collector, waste heat recovery boiler as steam, circulation fan and power generator by steam turbine.
The values of cost and effect are obtained from a system configuration of two identical sintering machines, coolers each equipped with waste heat recovery boiler and one unit of electric power generator, to which the steam from two boilers is led.
In addition to improving the efficiency and reducing carbon emissions on the main unit of the boiler itself, it is also important that the unused waste heat is used effectively and that the heat losses from various points are reduced.
To this end, measures are taken such as heat recovery from the steam condensate after its use in the facility, recovery of the boiler blowdown heat, heat insulation on the steam piping, and action required for steam leaking from traps.