1. Pollution control methods of thermal power plants
Prabhakaran.T,Ap/Mech, Power plant Engineering

2. Pollution control methods of thermal power plants
Minimizing the discharge of toxic substances
Uses- scrubbers, fabric filters and electrostatic precipitators
Environment around thermal power plant depends on the following factors
Fuel combustion process
Type of fuel used
Flue gas device used
Dust collecting and gas cleaning
Contaminants in waste water from the plant
Prabhakaran.T,Ap/Mech, Power plant Engineering

3. Pollution control methods of thermal power plants
Control of CO2
part of combustion process Control measures
Cleanest fuel used
High heat content, low ash and low sulfur coal
Coal washing
Best technology to choose fuel to balance environmental benefits
Use of combined power plants
Prabhakaran.T,Ap/Mech, Power plant Engineering

4. Pollution control methods of thermal power plants
Control of Sulphur oxides
Two basic approach
Removal of Sulphur compound from fuel before burning(Desulphurisation of fuel)
Froth floatation
Chemical treatment
Magnetic separation
2. Removal of SO2 from flue gas( flue gas cleaning)
Wet scrubbing
Catalytic oxidation
Solid absorbent
Use of low Sulphur coals
Use of tall stacks
Prabhakaran.T,Ap/Mech, Power plant Engineering

5. Reduction of temperature in the combustion zone
Control of NO2
Reduction of temperature in the combustion zone
Reduction of residence time in combustion zone
Increase in equivalence
Control of particulate
Cyclone separator
Scrubbers
Electrostatic precipitation
Bag house filters
Prabhakaran.T,Ap/Mech, Power plant Engineering

6. Waste disposal option for thermal power plant Upstream method
Downstream method
Centerline method
Prabhakaran.T,Ap/Mech, Power plant Engineering

7. Waste water from water treatment plants
Waste water treatment
Waste water from water treatment plants
Water from hydraulic ash disposal system
Rainwater collected
Cooling water used in power plants
Filtering
Floatation
Centrifuging
Coagulation
Setting and clarifying
Bio-chemical methods
Prabhakaran.T,Ap/Mech, Power plant Engineering

8. THANK YOU ME6701-POWER PLANT ENGINEERING-
UNIT 5 energy, economic and environmental issues of power plants- SREEDENDU/AP/EE
10/5/2017
Prabhakaran.T,Ap/Mech, Power plant Engineering 8