EMISSION CONTROL
The following
options are now available for optimizing emission control in utility and
industrial power plants.
|
|
Options |
|
|
1 |
Pre combustion control |
|
|
|
1.
Physical
coal cleaning to remove ash and pyrites. 2.
Chemical
coal cleaning. 3.
Fuel
oil preparation through (a) Settling (b) Blending (c) Salts removal |
4.
Fuel
oil emulsification 5.
Chemical
additives 6. Classification/Liquefaction 7.
Using
coal/water or coal/oil slurries 8.
Densification
of fuel/wastes 9.
Fuel
conversions (converting MSW and other low grade fuels into gaseous and liquid
fuels.) |
|
2 |
In furnace control |
|
|
|
1.
Combustion
control by (a) Low excess air (b) LNOx burners (c) Flue gas (d) Fuel 2.
Advanced
low NOx burners 3.
Furnace sorbent injection |
4.
Limestone
injection multi stage burner 5.
Slagging
combustors 6.
Ammonia
injection 7.
Urea
injection 8.
Fluidized
bed combustion 9.
Co-combustion
|
|
3 |
Post combustion control |
|
|
|
1.
Ammonia
injected FGD 2.
Wet
lime/limestone FGD 3.
Spray
dryer FGD 4.
SCR 5.
SNCR 6.
DeSOxNOx
system 7.
Fabric
filter |
8.
Mechanical
collector 9.
ESP 10.
Wet
particulate scrubbing 11.
Electron
beam process 12.
Sodium
sorbent injection 13.
Calcium
sorbent injection |
|
4 |
Auxiliary equipment tie
ins |
|
|
|
1.
FGD
reheaters (a) Gas-gas exchanger (b) Gas-liquid-gas exchanger (c) Indirect air preheater (d) Direct combustion (e) Inline reheat (f) Flue gas bypass 2.
Stack (a) Wet-stack operation (b) Conventional operation |
3.
Cooling
towers (a) Natural draft (b) Mechanical draft 4.
Once
through cooling 5.
Air
cooled surface condensers 6.
FGD
exhaust discharge through CT |
Comments
Post a Comment