Necessity of Ash Disposal
In central power stations a very large quantity of ash is produced which is about 10 to 20% of coal burnt per day. It is necessary to provide some means to remove this ash and disposed off at a sufficient distance from the site of power plant for the following reason :
- Ash is dust, hence it is imitating and annoying to handle in general and particularly to eyes.
- It forms clinkers by fusing together in large lamps which must be broken before given to any conveying equipment.
- Ash is hot when it comes out of the furnace, therefore its quenching is necessary.
- Ash is abrasive, therefore, it will wear all the conveyor parts in contact with it in case there is a relative motion.
- It produces corrosive acids when mixed with water.