Coke dry quenching system can reduce dust emission, improve the working environment and recover the sensible heat of the coke at the same time. In this system, the hot coke is cooled by inert gas in a steel chamber with special designed refractory. The heated inert gas is circulated to a heat recovery steam generator to produce high pressure steam. The high pressure steam can drive a steam turbine to generate
power.
The TRT utilizes the top pressure of blast furnace gas to drive an expansion turbine and to generate power. The process is shown in the below picture. The four blast furnaces in CSC have all equipped with a TRT.
The cooling air is heated in the sinter cooler and circulated to the heat recovery steam generator to produce 17.5 kg/cm2 pressured steam. The steam can served as
auxiliary steam in CSC or be sold out to the neighbor plants through pipe network.
