Transcript Document

OPTIONS in POWER GENERATION
Power Generation Options
Hydro
Thermal
Steam Power Plants
Boiler + Turbine
Oil
Coal
Pulverised Coal
Non Conventional
Gas Turbine Based
Power Plants
Gas
Fludised Bed
Technology
Nuclear
Open Cycle
(Gas Turbine)
Combined Cycle
GT + ST
Operating Business Areas
Industry
Power
Captive Power Plants
Thermal
Sub-Crit: Up to 600MW
Sup. Crit: 660 & 800MW
Boilers, STG, Auxiliaries,
ESP
EPC
Hydro
Up to 250 MW
Turbines, Generators
Controls
Gas
Adv. Class GTs
Open Cycle,
Combined Cycle
Nuclear
Up to 1000 MWe
International
Operations
Boilers, STGs, Auxiliaries, C&I
Systems, DG
Power Transmission
Switchgear, Transformers,
Insulators, Substations, SCADA,
HVDC Systems
Transportation
Locomotives (electric - AC/DC),
Diesel-electrics, EMU's, Traction
Electrics
Other Products
On-Shore Oil Rigs, Compressors,
NCES, Desalination Plants,
Valves, Motors
SERVING CORE & INFRASTRUCTURE SECTORS OF THE ECONOMY
BHEL’S Contribution to Indian Power Sector
INSTALLED CAPACITY - Utility
180413 MW (As on Mar. 2012)
GENERATION 612 BUs
Thermal Utility sets
2011-12
BHEL
59%
OTHERS
41%
BHEL
75%
OTHERS
25%
Practically every 3 houses out of 4 in India
are supplied power, generated from BHEL sets
Over 1,15,000 MW added by BHEL in domestic and international segments
Steam Generators Exported
Customer
Unit
Size
No
EEA-Egypt
Al-Arish TPS
12 T/h
1
ECT-Libya
Tripoli West TPS
45 T/h
2
PT IBR-Indonesia
Bharat Rayon
75 / 80 T/h
PT – IBR
Jawa bharat Indonesia
120 T/h
1
PT. ADARO
Indoesia
126 T/h
2
KONIAMBO-Nickel
SAS
Koniambo Nickel SAS –
New Caledonia
405 T/h
2
NEB-Malaysia
Sultan Ismail TPS
30 MW
1
EEA-Egypt
Al-Arish TPS
30 MW
2
NEB-Malaysia
Tuanku Jaafar TPS
60 MW
2
NEB-Malaysia
Tuanku Jaafar TPS
120 MW
3
NEB-Malaysia
Prai TPS
120 MW
3
NEB-Malaysia
Pasirgudang TPS
120 MW
2
ECT-Libya
Tripoli West TPS
120 MW
2
NEC-Sudan
Kosti TPS
125 MW
4
MAYLAN Intra Ltd
Senegal / Africa
125 MW
1
PEEGT
Tishreen,Syria
200 MW
2
3/3
Total 36
Trend in unit sizes & Cycle parameters
SHO Pressure
(kg/cm2(a)
SHO/RHO
Temperature
(Deg.C)
60 / 70 MW
96
540
1965
110 / 120 MW
139
540/540
1966
200 / 210 MW
137 / 156
540/540
1972
250 MW
156
540/540
1991
500 MW
179
179
540/540
540/568
1979
1985
600 MW
179
540/540
540/568
2008
660 MW
256
568/596
2008
700 MW
256
568/596
2010
800 MW
256
568/596
2008
Unit Size
Year of
Introduction
Heat balance diagram (270 MW)
150.0
816.4
796.486
537.0
HPT
BOILER
IPT
39.56
736.6
35.62
844.4
717.87
345.1
717.87
537.0
LPT
0.1033
573.1
552.286
(0.9227)
796.486
255.0
246.0
C
D
HPH
LPH
HPH
LPH
LPH
LPH
CP
FP
ata
kCal/kg
t/h
deg. c (x)
Rankine cycle


The Carnot Cycle is theoretically most efficient, but it is having practical difficulties.
For steam power plant, practical thermal cycle was suggested by Rankine, called Ideal cycle or
Rankine cycle.
T
4
T1
p1
1
3’
T2
3
p2 2
3-3’ – BFP raises pressure from p2 to
p1
3’-4 – Heating In feed heaters &
economizer
4 -1 – Heating In boiler
1-2 – Work done in Turbine from p1
S2
to p
2-3 – Heat reduction in condenser
SH STEAM OUTLET
CRH IN
HRH OUT
DRUM
REAR ROOF
FRONT ROOF
EXTENDED
WW
LTSH
Economiser
WATER INLET
WATER WALL BOTTOM RING HEADER
BASIC DATA FOR DESIGN
BOILER PARAMTERS
FUEL DATA
SITE DATA
FUEL ANALYSIS COAL
Fuels Handled
Coal / Oil / Natural Gas in any combination
Lignite
Blast Furnace Gas / Coke Oven Gas / Corex Gas
Carbon Monoxide / Tail gas
Asphalt
Black Liquor
Bagasse
Rice Husk
Washery Rejects
Wheat / Rice straw
FURNACE HEAT LOADINGS
 EPRS LOADING
 PLAN AREA LOADING
 VOLUMETRIC LOADING
 BURNER ZONE HEAT RELEASE RATE
BOILER AUXILIARIES
MILL
FANS
ELECTROSTATIC PRECIPITATOR
AIRHEATERS
BOWL MILLS UNDER ERECTION
Bowl Mill (General Arrangement)
Tube Mill Arrangement (Typical)
Axial Reaction Fan (Single Stage)
AIR
SUCTION CHAMBER
IMPELLER
OUTLET BLADE
SHAFT
SERVO MECHANISM
(FOR BLADE PITCH CONTROL)
AXIAL REACTION FAN
DIFFUSER
Axial Reaction Fan (Double Stage)
SUCTION CHAMBER
SHAFT
IMPELLER BLADE
IMPELLER
IMPELLER
DIFFUSER
Axial Fan Impulse Type (AN)
IMPELLER
INNER BEARING
SUCTION
CHAMBER
OUTER
BEARING
INLET GUIDE VANE
OUTLET GUIDE VANE
AXIAL FAN IMPULSE TYPE - AN
DIFFUSER
RADIAL FAN - DOUBLE SUCTION
Radial Fan (Double Suction)
DAMPER ASSY.
SUCTION CHAMBER
IMPELLER
SHAFT
SPIRAL CASING
AIRPREHEATERS
ELECTROSTATIC PRECIPITATOR
TG FLOOR - THERMAL POWER PLANT
TYPICAL STEAM & WATER
CIRCUIT
DRUM
R4
S1
S2
R3
S3
S4
S5
S5
S6
S8
S7
S9
R2
S7
S11
S11
S18
S17
S9
R1
S18
DESH
S6
S19
S12
S20
S20
S13
S14
S15
S14
S15
RH SYSTEM
S10
S16
S21
LOW TEMP SH
S22
S23
E7
S24
E5
E5
S26
E4
S27
S28
E7
E6
S25
S17
E4
PLATEN SH
S29
E3
S30
E2
E1
S31
S32
E3
FINAL SH
S33
SH SYSTEM
ECO SYSTEM
TYPICAL SCHEME OF AIR & GAS DUCTS / CIRCUITS
COLD PA SYSTEM
Once Through Supercritical
Steam Generators
NTPC/ BARH II STPP – 2 x 660 MW
Customer
National Thermal Power Corporation
Project
BARH II – 2 x 660 MW
Contract No.
U6/1700 & U6/1701
Zero Date
31.03.2008
Parameters at SHO / RHO
Steam Flow
Pressure
Temperature
Fuel
2120/1708.2 t/h.
255/54.65 kg/cm2 (g)
568 / 596 oC
Coal
Major Auxiliaries
Mill
Airheater
9 Nos. Bowl Mill, HP 1103
PAH - 2 Nos. 28.5 VI 58 (70)MR,2NOS 31.5 VI
70 (82)MR ALSTOM Supply
FD Fan
2 Nos. FAF 25/11.2 – 1, Axial Reaction-TLT
PA Fan
2 Nos. PAF 19/10.6 – 2, Axial Reaction-TLT
ID Fan
2 Nos. SAF 42.5/26.6-1, Axial Reaction-TLT
Dust Collector
Not in SG Package
Steam generation process
T S DIAGRAM
Temperature ( 0 C )
OUTPUT INCREASE
B
D
C
E
24’0c
F
A
-273
0
Entropy KJ / Kg K
Basic Rankine Cycle
The Concept
The mass flow rate thru’ all heat transfer circuits from
Eco. inlet to SH outlet is kept same except at low loads
wherein recirculation is resorted to protect the water wall
system
Circulation Systems
STEAM TO TURBINE
STEAM TO TURBINE
SH
SH
DRUM
ECO.
EVAPORATOR
EVAPORATOR
SEPERATING
VESSEL
ASSISTED
CIRCULATION TYPE
Drum Type
FEED
FEED
ECO.
Once-through
CIRCULATION PUMP
(LOW LOAD &
START-UP)
Thank You