Deepakkumar Yadav
Fluidized Bed Combustion (FBC) Systems Due to the escalation in oil and gas prices continuously the world over, the power engineers were trying to develop new combustion systems with coal as fuel since it is available in abundance in India. In the earlier designs of furnaces using Pulverized coal were required to be operated upon … Read more
Pulverizing Mills Pulverizing mills called pulverizers are used to convert the crushed coal into fine dust particles. It helps in promoting the rapid combustion of fuel and air. Various pulverizing mills used are : Ball and race mill Bowl mill Ball mill Impact or hammer mill The pulverizers are driven by electrical motors. Working of … Read more
Dust Collection System In coal fired boilers the flue gases have certain particles of solid matter in suspension this is called smoke or dust. In case of pulverized coal furnaces the fly ash remains in suspension with flue gases. If the particles in suspension are of size from 1 to 100 microns it is called … Read more
Various Ash Handling Systems Various ash handling systems used are : Hydraulic ash handling system. Pneumatic ash handling system. Mechanical system. 1. Hydraulic Ash Handling System : The schematic diagram of hydraulic ash handling system is shown in Figure A. Figure A This site is med for larger power plant. In this system ash from … Read more
Ash Handling Systems A good ash handling system consists of the following : A system of removing ash from furnace in large quantities and at high rate. A system of loading the ash collected from furnace on to the conveyor system. A system to deliver the ash from conveyor to ash storage. A system of … Read more
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 … Read more
Oil Burners Usually the oil burners are required to be used for small capacity boilers for industrial use. The purpose of an oil burner is to receive supply of oil, meter it according to the load on the plant, atomise and vapourise the oil completely. The mixing of oil with air is so provided that … Read more
Classification of Pulverized Coal Burners Various types of coal burners are : Vertical long fame burners. Turbulent or short flame burners. Tangential burners. Cyclone burners. 1. Vertical Long Flame Burner : Vertical long flame burners as shown in Figure A are also called as U- Name stream lined burners. Figure A shows the arrangement of … Read more
Pulverized Coal Burners The Pulverized coal can be burnt with less or excess air similar to the burning of liquid or gaseous fuels. The method of obtaining the pulverized coal has been discussed in the previous section. Here we are concerned with the required burners for burning the pulverized coal. The various requirements of pulverized … Read more
Pulverized Coal System The pulverized coal system is used now a days for big power plants of capacity 100 MW or more. The coal is pulverized in order to increase its surface area, thus, promotes the rapid combustion (like burning of gas) without the need of supplying much of excess air, consequently, it results into … Read more