Veesons Energy Systems Pvt. Ltd. Supplies Waste Heat Recovery Boilers. Veesons Energy Systems Pvt. Ltd. Has received ISO 9001:2008 certifications. Waste Heat Recovery Boilers is a vertical single drum boiler consisting of economizer, evaporator, super heater, hot gas inlet duct, outlet gas duct, interconnecting piping, instruments and controls etc. Waste Heat Recovery Boilers is suitable for outdoor installation and designed to generate steam with any combination of kiln gas flow and temperature. The heat used for producing the sponge iron can be effectively reused to provide the same plant with electricity. This type of plant is called co generative plant. This flue gas can be used to generate electricity with a power plant for which no external fuel will be required. The boilers used in these types of power plants are called waste heat recovery boilers.