Agenda UNECE Convention on Long-range Transboundary Air Pollution General cost methodology Calculation of boiler outlet emission loads Economic assessment of DeNOx technologies Economic assessment of dedusting technologies Economic assessment of DeSOx technologies
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Agenda UNECE Convention on Long-range Transboundary Air Pollution General cost methodology Calculation of boiler outlet emission loads Economic assessment.
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Agenda
UNECE Convention on Long-range Transboundary Air Pollution
General cost methodology
Calculation of boiler outlet emission loads
Economic assessment of DeNOx technologies
Economic assessment of dedusting technologies
Economic assessment of DeSOx technologies
UNECE Convention on Long-range Transboundary Air Pollution
Economic assessment of Dedusting technologies
IED ELVs and Dust emission issues in coal power plant
Existing plants New plants
Power (MW) ELV (mg/Nm3) Power (MW) ELV (mg/Nm3)
50-100 3050-300 20
100-300 25
>300 20 >300 10
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
0,0E+00
5,0E+04
1,0E+05
1,5E+05
2,0E+05
2,5E+05
Ash
mas
s fra
ction
(%)
Dus
t loa
d (t
/yea
r)
Carbon ash content and Dust load emissions
Dust load (t/h)
Ash mass fraction (%)
UNECE Convention on Long-range Transboundary Air Pollution
Economic assessment of Dedusting technologies
Specific cost methodology for DedusterAdapted methodogy from US EPA Air pollution cost control manual
Evolution of Investment Cost and Total Filtration Area depending on Air to Cloth ratio
Investment cost
Atot (m2)
Industrial example
Air to cloth ratio (m/s)
Termokimik 0.011
Balcke Dürr 0.014
GE Energy 0.014 – 0.017
Lurgi 0.014 – 0.0167
Otter Tail Power Company
0.0172
For a 1000 MWth combustion plant
Operating Cost for Pulse Jet Fabric Filter and Efficiency
UNECE Convention on Long-range Transboundary Air Pollution
Economic assessment of Dedusting technologies
Operating cost(€2010)
Pressure drop (mbar)
Cleaningfrequency
Total filtration area (m2)
Fan power requirement (MW)
Air compressor power requirement (MW)
Dust load(g/Nm3)
Dust accumulation on bags (g/m2)
Bag lifetime (h)
Efficiency(%)
A/C (m/s)
vሶλ,dry ,secflue gas ሺNm3/sሻ
Operating Cost for Pulse Jet Fabric Filter
UNECE Convention on Long-range Transboundary Air Pollution
Economic assessment of Dedusting technologies
-10
10
30
50
70
90
110
130
150
0
100
200
300
400
500
600
700
800
0 20 40 60 80 100
Spec
ific
dust
red
ucti
on c
ost
(€/t
/yea
r)
Elec
tric
ity
and
Bag
Repl
acem
ent
cost
(k€
/yea
r)
Capacity factor (%)
utility electricity cost
Bag replacement costspec. Dust reduction costs
Specific dust reduction cost = total cost per year / dust emission saved per yearUtility electricity cost : Fan consumption and comrpessed air consumptionBag replacement : assuming 20,000 hours of bag lifetime
Electrostatic Precipitator
UNECE Convention on Long-range Transboundary Air Pollution
Economic assessment of Dedusting technologies
General approach for ESP equipment cost
UNECE Convention on Long-range Transboundary Air Pollution
Logic Tree
Economic assessment of Dedusting technologies
fSN
MMDin (µm)
fRR
Efficiency (%)
Specific CollectingPlate (s/m)
Effective CollectingPlate Area (m²)
Equipment costs(€2010)
T (K)
MMDp (µm)
MMDr (µm)
fL
Ε0 (F/m)
pe (%)
Ebd (V/m)
υG (kg/m/s)
Eavg (V/m)
n pes
pec MMDrp (µm)
SCAk (s/m) MMDk (µm)
Ref.Box ESP1
Ref.Box ESP2-3
vሶλ,dry ,secflue gas ሺNm3/sሻ Equations or correlations
Cost equations
Operator data
Calculated values
Cost results
Literature data
Effective collecting plate area determination from method 2
UNECE Convention on Long-range Transboundary Air Pollution
Cost comparison for ESP units Variable input parameters and comparison with literature data
UNECE Convention on Long-range Transboundary Air Pollution
Economic assessment of Dedusting technologies
Parameter Range choice
Efficiency [η] (%)
99.89
Temperature [T] (K)
400
Mass Mean diameter [MMDin] (µm)
12
ESP specific equipment
Yes
ESP material Stainless steel 304
SO3 injection precaution
Yes
250 500 750 1,000 1,250 1,500 1,750 2,0000
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
EGTEI Model
RAINS
AEP
Nalbandian
Naldandian [Or-fanoudakis]
World bank
IEA
Balcke Durr
Questionnary Plant D
Zevenhoven & Kilpinen
Rubin
Sankey
IEA
Power (MWth)
Inve
stm
ent c
ost (
2010
k€)
Operating Cost for ESP units
UNECE Convention on Long-range Transboundary Air Pollution
Economic assessment of Dedusting technologies
0
25
50
75
100
125
150
0
100
200
300
400
500
600
0 20 40 60 80 100
Spec
ific d
ust r
educ
tion
cost
(€/t
/yea
r)
Elec
tric
ity a
nd S
O3
cost
(k €
/yea
r)
Capacity factor (%)
utility electricity cost
SO3 consumption costspec. Dust reduction costs
Specific dust reduction cost = total cost per year / dust emission saved per yearUtility electricity cost : Fan consumption and ESP power requirementSO3 consumption : assuming precaution injection at 35 kg/h