In its continuous journey towards improving productivity, energy efficiency and environmental performance, Tata Steel has established India’s largest CDQ facility capable of handling 200 metric tonnes per hour, at its state-of-the-art Greenfield steel plant located at the Kalinganagar Industrial Complex in Jajpur district of Odisha.

CDQ is a heat recovery system to cool the hot coke from coke ovens. It is one of the most renowned energy-efficient and environment friendly facility in steel production where hot coke removed from coke ovens at a temperature of approximately 1,000°C 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 sensible heat, recovered by heat transfer in the cooling chamber, is utilized as a heat source for steam generation, electricity generated by CDQ is clean and green energy. 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.

Nippon Steel and Sumkin Engineering (NSENGI) of Japan were the supplier and technology partner of the CDQ system set up at Tata Steel Kalinganagar. The project was executed by Essar Projects.

About Tata Steel

Tata Steel Group is among the top global steel companies with an annual crude steel capacity of 27.5 million tonnes per annum (MTPA) as on March 31, 2017. It is the world's second-most geographically-diversified steel producer, with operations in 26 countries and a commercial presence in over 50 countries. The Group recorded a consolidated turnover of US $18.12 billion (INR 117,420 crore) in FY17. Tata Steel Group is spread across five continents with an employee base of nearly 74,000. Having bagged the Deming Application Prize and Deming Grand Prize for continuous improvement in 2008 and 2012 respectively, Tata Steel has now been recognised as the global ‘Industry Leader’ in ‘Steel category’ by Dow Jones Sustainability Index (2015). Besides being a member of the World Steel Climate Action Programme, Tata Steel has also been felicitated with several awards including the Prime Minister’s Trophy for the best performing integrated steel plant for 2013-14 (received in 2017), Best Risk Management by CNBC TV18 (2016), ‘Best-in-class Manufacturing’ award from TIME India (2016) and the ‘Most Ethical Company’ award from the Ethisphere Institute (2016), IIM Sustainability Award (2015), among several others.

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