STEEL BELT CONVEYORS FOR SEVERE CONDITIONS since 1929

JSW Energy

THE CHALLENGE

JSW Energy (Ratnagiri) Ltd., (JSWERL), a subsidiary of JSW Energy Ltd., is a leading business group in India with a presence in high growth sectors like Steel, Energy, Aluminium, Cement, Infrastructure and Logistics. They have set up 4x300 MW coal based Units, at Jaigad, about 40 km from Ratnagiri in Maharashtra. This is a modern power plant for which JSW has chosen the most modern environmentally friendly technologies and, among them, the dry extraction and removal of bottom ash from the four coal-fired boilers.
The MAC® (Magaldi Ash Cooler) system contributes to the main goals of this power plant:
a) to generate electric power in the most environmentally friendly manner;
b) to ensure no impact on nearby water bodies since the envisaged effluent management system ensures zero discharge from the plant boundary;
c) 100% utilization of ashes.

 

THE CUSTOMER

The 1,200 MW plant at Jaigarh, Ratnagiri was launched in July 2007. The plant comprises four units of 300MW each and runs burning imported coal. For operational efficiency, it blends coals from different sources thus helping to boost cost effectiveness. The plant was commissioned in record time when the first unit went on-line in 2010 and the entire plant was successfully commissioned in 2011.The plant sells power to Maharashtra State Electricity Distribution Company and to the plants of JSW Steel Ltd. & its subsidiary based in Dolvi and Kalmeshwar.
The power generated is transmitted through the Jaigad PowerTransco Ltd., a JSW Energy joint venture company that operates an intra-state transmission system. Given the ecologically fragile nature of the Konkan region, the plant adopted several green technologies thus helping to reduce emissions and waste.

 

THE SOLUTION

The MAC® system extracts the hot ash falling from the boiler through the bottom hopper. The ash is cooled using only ambient air and then reduced in size through a crushing stage. Downstream, an Ecobelt® steel conveyor belt further cools the ash before being discharged in a 150 cum storage silo.
This silo is equipped with 2 exits: one dry to unload the bottom ash via a telescopic unloader to closed trucks and one wet to unload the bottom ash through a paddle mixer onto open trucks.

 

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