An overview of steam powerplant

AN OVERVIEW OF STEAM POWER PLANT

Submitted by:DEEPAK KUMAR DAS

SUBMITTED TO:DR. ABHIMANYU MAHAPATRADR. RANJAN KUMAR JENA

INTRODUCTION:

In this powerplant coal fossilfuel are used as fuel,from the combustion heatProduced this heat is utilised in boiler to increase the pressure and tempereture Of water which then fed to the turbine when the turbine rotates rotating The turbine shaft then electricity generated

TWO TYPE:1-CAPTIVE PP2-CETRAL PP

CE-TE-ME-EEAgain steam pp are two type 1-condensing type2-non condensing type

Eficiency of power plant:

1-THERMAL EFFICIENCY2-ELETRICAL EFFICIENCY3-OVER ALL EFFICIENCYMERITS:.Fuel used cheaper.cheaper initial cost.such plants can existed irrespective of existance of fuel.can be located at load centersDEMERITS:.High mentainance and operating cost.polluting environ ment.huge requirment of water.handling of coal disposal and ass Is quite difficult

WORKING OF STEAM POWER PLANT

The most important constituents of a steam power station are:

a. Steam generating equipmentb. Condenserc. Prime moverd. Cooling towers e. Electrical equipment

Steam generating equipment includes:

• Boiler• Boiler furnace • Superheater• Economiser• Air Pre-heater

ELECTROSTATIC PRECIPITATOR

AND ITS FUNCTIONS

Introduction:

• Particulate Collection Device used in industries to minimize air pollution

• Principle of operation Electrostatic attraction

• Efficiency of 99% in many industries• Can handle large gas volumes with a

wide range of inlet temperatures, pressures, dust volumes, and acid gas conditions

• Can collect particles of varying sizes in dry and wet states

Theory of Precipitation:

Theory of PrecipitationCharging, Collecting & Rapping

Particle charging Discharge & Collection Electrodes

Corona Discharge Avalanche MultiplicationIonization of gas moleculesParticle Charging Mechanism Field charging,

Diffusion charging, Electron chargingParticle CollectionParticle Removal

Particle Charging:

Corona Discharge

Ionization of Gas Molecules

Particle Charging Field charging, Diffusion charging, Electron charging

Particle collection

Particle Removal by rapping

Conclusion

All ESPs, no matter how they are grouped, have similar components and operate by charging particles or liquid aerosols, collecting them, and finally removing them from the ESP before ultimate disposal in a landfill or reuse in the industrial process

The precipitator should be designed to provide easy access to strategic points of the collector for internal inspection of electrode alignment, for maintenance, and for cleaning electrodes, hoppers, and connecting flues during outages