Chiyoda Corp. (Yokohama, Japan; www.chiyoda-corp.com) has concluded a technology license agreement with Larsen & Toubro Ltd. (L&T; Mumbai, India; www.larsentoubro.com) for provision of its proprietary Chiyoda Thoroughbred 121TM (the CT-121TM”) fluegas desulfurization (FGD) technology for promotion in the Indian market.
The signing ceremony took place on November 8, 2016 in Mumbai, India. Under this agreement, Chiyoda will license the CT-121TM process to L&T, and L&T will be responsible for engineering, procurement and construction (EPC) of the FGD systems.
India, with its robust and rapid economic growth, is in need of power plants to sustain their development. For coal-fired power plants, a stringent emission gas standard was newly adopted in December 2015, and the demand for FGD plants is increasing significantly.
Chiyoda and L&T came to terms on the agreement owing to the proven superiority of the CT-121TM process technology. There are 83 CT-121TM units worldwide, and where environmental regulations are stringent, the CT-121 process has more than 20% share in Japan and the U.S.
The Chiyoda Thoroughbred 121TM FGD process is a unique technology developed by Chiyoda in which SO2 is absorbed from fluegas 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 the fluegas, the CT-121TM process uses Chiyoda’s unique absorber, the Jet Bubbling Reactor (JBR), in which the fluegas is blown into the reagent slurry, forming a fine bubble bed where SO2 is absorbed, oxidized by injected air, and then neutralized by ground limestone slurry.