Indian firm has signed licence agreement with Chiyoda Corp for its flue gas desulphurisation (FGD) technology, which reduces sulphur dioxide (SO2) emissions in thermal power plants. Larsen & Toubro (L&T) has entered into a long-term technical licence agreement with Japan’s ChiyodaCorporation for its Chiyoda Thoroughbred 121TM (CT-121TM) flue gas desulphurisation (FGD) technology. The agreement grants L&T exclusive rights to undertake EPC of CT-121TM FGD systems. As per the notification of Ministry of Environment, Forest and Climate Change (MoEFCC) issued in December 2015, new limits on sulphur dioxide (SO2) emissions has been introduced for coal-based thermal power plants in India. The move, which makes Indian emission norms among the most stringent in the world, has called for mandatory installation of FGD systems in upcoming power plants, including those currently under construction and many that are already operational.
“As a responsible corporate citizen, L&T is committed to containing emissions and has always complied with the relevant government norms. The agreement with ChiyodaCorporation is yet another major step in that direction,” said Shailendra Roy, CEO & MD, L&T Power and whole-time director (power, heavy engineering & defence), L&T. Ryosuke Shimizu, director & senior vice president (technology development, investment & project operations), Chiyoda Corporation, added, “We are very happy to contribute to India’s development of energy and environment in harmony with our own technology.”
The CT-121TM FGD process is a unique technology developed by Chiyoda in which sulphur dioxide is absorbed from flue gas generated by coal-fired, oil-fired and other types of boilers and removed as gypsum. Unlike conventional processes in which the reagent slurry is sprayed on flue gas, the CT-121TM process uses Chiyoda’s unique absorber, the Jet Bubbling Reactor (JBR), in which the flue gas is blown into the reagent slurry, forming a fine bubble bed where SO2 is absorbed, oxidised by injected air, and then neutralised by ground limestone slurry.
This technology is highly efficient, enabling low-cost removal of flue gas SO2. Moreover, it ensures that the plant remains compact and easy to maintain. L&T and Chiyoda’s relationship dates back over two decades with L&T-Chiyoda Limited, a JV that has come to be an internationally reputed design and engineering consultancy organisation catering to the hydrocarbon sector. Through the signing of this agreement, the two companies have extended their association into the power sector as well.
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