Coal and ash handling system in thermal power plant ppt

What is an ash handling system in a thermal power plant?

This document describes an ash handling system in a thermal power plant. It discusses the different components of the system including the bottom ash handling system, coarse ash handling system, fly ash handling system and ash slurry disposal system. Ash is generated during coal combustion and constitutes 30-40% of the total coal consumption.

Do thermal power plants need ash handling?

Proper ash handling is required as thermal power plants produce a large amount of ash as a byproduct of coal combustion. This document discusses coal handling and combustion in thermal power plants. It begins by describing the different types of coal and methods of coal analysis.

What is ash handling system?

Ash is generated during coal combustion and constitutes 30-40% of the total coal consumption. The ash handling system ensures the ash is properly managed, utilized or disposed of. Ash handling systems in power plants have three main types: hydraulic, pneumatic, and mechanical.

How do thermal power plants handle fly ash?

Fly ash is captured by the air preheater, economizer, and ESP and stored in silos. The ashes are then mixed with water to form slurry and pumped via pipelines to the ash disposal site. Proper ash handling is required as thermal power plants produce a large amount of ash as a byproduct of coal combustion.

What are the components of bottom ash handling system?

For bottom ash handling, the key components are the bottom ash hopper, scrapper chain conveyor, clinker grinder, slurry sump, and hydrobin. Fly ash has various applications including use in cement production, road construction, soil stabilization, and mine reclamation. The document discusses the ash handling system at NTPC Dadri power plant.

Why is ash a problem in steam power plants?

large quantity of ash is, produced in steam power plants using coal. Handling of ash is a problem because ash coming out of the furnace is too hot, it is dust desirable to quench the ash before handli