Bhubaneswar: Tata Steel set up India’s largest Coke Dry Quenching (CDQ) facility for its Kalinganagar steel plant in Odisha.
CDQ, which has a capacity of handling 200 tonnes per hour, is a energy-efficient and environment friendly heat recovery system in steel production where hot coke removed from coke ovens at a temperature of around 1,000 degree Celsius is cooled and kept dry with inert gas. The resulting steam produced in a waste heat recovery boiler is used to generate electricity.
The facility is part of the continuous journey towards improving productivity, energy efficiency and environmental performance. As the sensible heat, recovered by heat transfer in the cooling chamber, is utilised as a heat source for steam generation, electricity generated by CDQ is clean and green energy.
It also cuts down dependence on natural resources for energy generation thereby increasing the resource efficiency considerably, through secondary resource management and technology infusion. In addition, compared to the conventional wet quenching, CDQ brings about advantages such as the reduction in dust emission and improvement of coke quality.