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Home > Equipments > Boiler - new boiler for 66mw coal fired power plant


 

new boiler for 66mw coal fired power plant

1.      Technical requirements; new boiler for 66mw coal fired power plant

The basic specification for the new boiler type pulverized coal for unit Nº3 as below:  

Table  1  Technical Features
Water Sources
Magdalena River
Distance to water source
<200 m
Elevation
75 msnm
Site Temperature
28ºC
Relative Humidity
80%
Gross Capacity
66MW
Type of Boiler
Subcritical; Natural Circulation
Pressure, Temperature, mass flow out of the boiler.
1,1310 psia
954 ºF
251.47 Ton/h
Extraction Steam Turbine
Port  Nº1:
384.74 psia
684.66 ºF
22.86 Ton/h
Port  Nº2:
122.74 psia
461 ºF
14.34 Ton/h
Port  Nº3:
    56.32 psia
297 ºF
13.78 Ton/h
Port  Nº4:
     8.63 psia
186.3 ºF
12.93 Ton/h
Temperature Inlet Feed water to Boiler
438.8 ºF
Fuel*
High Volatile Bituminous Coal
Cooling system
Once through open loop water cooling
Emission control system
Particulate emission control: Electrostatic Precipitator
Environmental  Regulation
Standard of Allowable emissions
Res. 909/2008
Reference Conditions (25ºC, 760mm Hg)
Particulate Matter (mg/m3)
SO2
(mg/m3)
NOX
(mg/m3)
Reference Oxygen
50
2000
600
6%
Permissible noise level
Sector C. Level Medium restricted
(Industrial areas such as industries in general, harbor areas).
Standard of maximum noise allowable (dB(A))
Res. 0627/2006
Day (7:01 to 21:00)
Night (21:01 to 7:01)
75
75
*See the characteristics of the fuel in the tables 1-2, 1-3, 1-4.
           
 
 
Table  2  Proximate and  Ultimate of the coal
Coal
Classification ASTM
Proximate Analysis
Humidity  Eq. +1
Ash
Volatil Matter
Fixed carbon
Sulfur
Heating value BTU/Lb
San Luis Flanco Occidental Coal
High volatile Bituminous  A
2.7
25.95
28.11
43.23
1.76
           10,913
Titiribí Coal
High volatile Bituminous  C
7.25
7.92
37.99
46.84
0.72
           11,767
Suesca-Albarracín Coal
High volatile Bituminous  A
3.92
10.43
33.53
52.12
0.69
           12,738
Average
               4.62
             14.77
             33.21
             47.40
               1.06
     11,806
 
Coal
Ultimate Analysis
Carbon
Hydrogen
Nitrogen
Oxygen
Chlorine
San Luis Flanco Occidental Coal
65.08
4.96
1.38
5.26
N/D
Titiribí Coal
71.01
5.2
1.55
10.59
0.01
Suesca-Albarracín Coal
74.72
5.15
1.6
6.94
N/D
Average
70.27
5.10
1.51
7.60
N/D
 
Table 3 Ash Analysis
Coal
Ash Analysis
SIO2
Al2O3
TiO2
Fe2O3
CaO
MgO
K2O
Na2O
SO3
P2O5
San Luis Flanco Occidental Coal
65.04
23
0.72
6.42
0.5
0.63
1.5
0.54
0.3
0.51
Titiribí Coal
40.77
24.41
1.08
8.97
6.9
4.73
1
0.36
7.1
0.11
Suesca-Albarracín Coal
64.78
25.73
1.15
3.82
0.7
0.73
1.5
0.32
0.3
0.44
Average
56.86
24.38
0.98
6.403
2.7
2.03
1.4
0.407
2.6
0.35
 
Table  4 Ash Fusibility Temperature
Coal
Ash Fusibility Temperature
Reducing Atm.
Oxidizing Atm.
Initial Deformation ºC
Softening ºC
Hemispheric ºC
Fluency       ºC
Initial Deformation ºC
Softening ºC
Hemispheric ºC
Fluency       ºC
San Luis Flanco Occidental Coal
1465
1499
1518
1540
1491
1518
1533
1545
Titiribí Coal
1313
1360
1391
1437
1390
1424
1451
1480
Suesca-Albarracín Coal
1429
1515
1524
1533
1468
1529
1534
1538
Average
1402
1458
1478
1503
1450
1490
1506
1521




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