Tata Steel has established India’s largest Coke Dry Quenching (CDQ) facility, capable of handling 200 metric tonnes per hour, in Odisha, a statement said on Monday.
The facility has been set up at Tata Steel’s state-of-the-art greenfield steel plant at the Kalinganagar Industrial Complex in Odisha, the statement said.
CDQ is a heat recovery system to cool the hot coke from coke ovens.
It is one of the most energy-efficient and environment-friendly facilities in steel production where hot coke removed from coke ovens at a temperature of approximately 1,000 degrees Celsius is cooled and kept dry with inert gas and the resulting steam produced in a waste heat recovery boiler is used to generate electricity.
As the heat, recovered by heat transfer in the cooling chamber, is utilised as the source for steam generation, electricity generated by CDQ is clean and green energy, said the statement.
This 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.
“This environment-friendly technology would help in abating climate change by reduction in CO2 emission to the extent of 0.11-0.14 tonnes per tonne of coke and reduction in dust emission to the tune of 300-400 grams per tonne of coke. The other advantages include saving a significant amount of water which is also becoming a scarce resource,” the statement added.
Nippon Steel and Sumikin Engineering of Japan was the supplier and technology partner of the CDQ system set up at Tata Steel Kalinganagar.
The project was executed by Essar Projects.