DONGFANG ELECTRIC CORPORATION LIMITED Dr. Harry Chen ...
Transcript of DONGFANG ELECTRIC CORPORATION LIMITED Dr. Harry Chen ...
DONGFANG ELECTRIC CORPORATION LIMITED
Dr. Harry Chen, Vice President
April 20th, 2012
China Central Government
100%
50.03%
General Introduction
Shanghai Stock ExchangeCode: 600875
Hong Kong ExchangesCode: 1072
Listed in
Annual Output (MW)No.1 in the world consecutively for 8 years
New Orders Composition
5,000 MW of annual production capacity for R&M jobs (~25 Units)
Revenue: 6.8 Billion USDCurrent Assets: 13.1 Billion USD
Total employee: 19,990
(1 RMB = 0.1585USD)
General Introduction
0
10,000
20,000
30,000
40,000
2004 2005 2006 2007 2008 2009 2010 2011
1000 MW Ultra-super Critical
600 / 660 MWUltra-super Critical, Super-Critical, Sub-Critical
300 / 350 MW Super-Critical, Sub-Critical
CFB Unit50/60MW, 135/150MW, 200/210MW, 300/350MW and 600MW
Reference: Over 40 Sets of 1000MW,Over 250 Sets of 600MW,Over 360 Sets of 300MW,Over 300 Sets of 200MW and below
200 / 210 MW Sub-Critical
Unit Class and Fleets
Pump Storage Type:
1 MW to 770 MW
1 MW to 200 MW
Francis Type:
Kaplan Type:
Bulb Type: 1 MW to 75 MW
Pelton Type: 1 MW to 200 MW
50 MW to 300 MW
Reference:Hundreds of Hydro Units capacity from 1MW to 770MW770MW, World 2nd Largest Francis Type75MW, World Largest Bulb Type
Manufacture, Hydro
Manufacture, Gas Turbine
Technical Corporation with MHI, Japan for Gas Turbine
M701F
Simple Cycle: 320MW
Combined Cycle: 480MW
M701D
Simple Cycle: 144MW
Combined Cycle: 213MW
Reference: M701F, 29 SetsM701D, 2 Sets
Manufacture, Nuclear
Nuclear Island Equipment, Conventional Island Equipment
Unit Capacity 1000MW to 1750MW
Generation 2+ CPR1000
Generation 3 EPR
Generation 3 AP1000
70% Chinese Market Share for Conventional Island
50% Chinese Market Share for Nuclear Island
Double-Fed Type: 1MW, 1.5MW, 2.5MW
Direct-Drive Type: 1.5MW, 2.5MW, 3MW
Manufacture, Wind
Reference: More than 2,600 units installed
4,000 units contracted
3MW, 5MW
Manufacture, Solar
Solar Power Portfolio
DEC LimitedDEC Limited
ThermalThermal HydroHydro
Gas TurbineGas Turbine
WindWind
NuclearNuclear
DEC Manufacture
SolarSolar
DEC Capabilities
Remark: *only a few projects
Thermal Hydro Nuclear Wind Gas Solar
Equipment
Manufacture √√√√ √√√√ √√√√ √√√√ √√√√ √√√√
Plant
Turnkey EPC √√√√ √√√√* √√√√ √√√√ √√√√
Plant Service√√√√ √√√√ √√√√ √√√√ √√√√ √√√√
� Total 89 Units in 28 Plants
((((41,860MW))))
34 Units in operation
((((11,535MW))))
Business in India, Projects
Dongfang’s Clients in India
• ABHIJEET GROUP
• ADANI
• APPL
• BGR ENERGY SYSTEM
• DPL
• EAST COAST ENERGY PVT LTD
• JPL/CLP INDIA
• JSW
• KSK
• LANCO
• VEDANTA
• WBPDCL
……
HPEfficiency
IP
Efficiency
LP
Efficiency
Heat RateKJ/KWh
((((KCal/KWh))))
Before R&M 78.8% 88.3% 77.6%8625
(2060)
Design Value
for R&M85 % 92.5% 87%
8143(1945)
After R&M 85.5% 92.6% 87.9%8128
(1941)
Exhaust Steam Pressure:::: 5.2 kPa
A Typical 200MW Steam Turbine Flow Path R&M
Xuzhou Power Plant, unit #7, flow path R&M in 1998
6%6%
R&M Case Study
(Commissioning in 1985, Designed Heat rate 8450 KJ/KWh)
According to Site Inspection & Evaluation, Experiments, Analysis, Computation, we concluded and provided the R&M solutions comprising three portions.
A Typical R&M Case in China (Xiangyang Power Plant #1)
Capacity increased from 300MW to 330MW
Part One Upgrade and Renovation
Part Two Refurbishment
Part Three Miscellaneous
R&M Case Study
(Commissioning in 1998 ; R&M in 2011 )
No. Modification ItemsReduce of Heat Rate (KCal/KWh)
Reduce of Auxiliary Power Consumption (%)
1 Optimization of Pulverizing and Combustion System 3.5
2 Renovation of Fans 0.175
3 Optimization of Thermodynamic System 3.5
4 Vacuum Sealing 8.4
5 Vacuum Pumping System
6 Hi-Lo Speed of Circulating Water Pump 0.01
7 Flow Path of Steam Turbine 121.8
8 Boiler Feed Water Turbine
9 Boiler Body 5.6
10 Generator Capacity Increasing
11 Electrical system
12 Coal Mill
13 Rubbery Ball Cleaning Device
14 Turbine oil treatment device
15 Intermittent and continuous drain system
142.8 0.424
Part One Upgrade and Renovation
R&M Case Study
Part Two Refurbishment
No. Modification Items
1 Insulation Replacement
2 Optimization of Operation Mode
3 Electrical System
4 Thermal Control system
Part Three Miscellaneous
No. Modification Items
1 Replacement of Condenser Pipe
2 Heating System Modification
3 Add Oxygen Measurement Sensor to Boiler
4 Recommended items for Generator Capacity increasing
5 Add inverter to Desulfurization Booster fans
R&M Case Study
The Investment will be returned in 3 ~ 4 years.
Summary
Modification Items Before R&M After R&M
Heat Rate of the generating
Unit (by total R&M)
10224 kJ/kWh
(2446 kcal/kWh)
9376 kJ/kWh
(2240 kcal/kWh)
Heat Rate of the generating
Unit (by ST modernization)
10224 kJ/kWh
(2446 kcal/kWh)
9523 kJ/kWh
(2275 kcal/kWh)
Heat Rate
of the Steam Turbine
8686 kJ/kWh
(2075 kcal/kWh)
7920 kJ/kWh
(1892 kcal/kWh)
Plant Output 300MW 330MW
Lifecycle25-10=15
yearsRefurbish to 25
years
8%8%
R&M Case Study
A Typical R&M Case in China (Xiangyang Power Plant #1)
Capacity increased from 300MW to 330MW
10%10%
� To meet the requirement of larger capacity, from 300MW to
330MW, and solve the problems due to the change of coals such
as lower steam temperature at reheater outlet; slagging in the
furnace; high flue gas temperature at APH outlet. The retrofit
scheme for boiler established by DEC through performance
calculation as below:
� Add about 1500m2 of vertical section low temperature reheater
heating surface;
� H-FIN type economizer is used instead of smooth economizer;
� Low-NOx horizontal dense-lean burner is adopted.
R&M Case Study
Boiler R&M (Xiangyang Power Plant #1)
Capacity increased from 300MW to 330MW
Item Before retrofit After retrofit
Unit capacity 300MW 330MW
Maximum continuous rating 1025 t/h 1077 t/h
Exit gas temperature
(after correction) 145℃ 135℃℃℃℃
Boiler efficiency
(after correction)91.92% 93.22%
NOx emission (O2=6%) 422mg/Nm3 360mg/Nm3
High temperature reheater
outlet steam temperature 522℃ 540℃℃℃℃
R&M Case Study
Boiler R&M (Xiangyang Power Plant #1)
Capacity increased from 300MW to 330MW
10%10%
� In order to solve the problem of low steam temperature at
reheater outlet, which is influenced by the low exhaust
steam temperature of steam turbine high pressure cylinder,
the retrofit scheme for reheater system established by DEC
through performance calculation is to add about 770m2 of
vertical section low temperature reheater heating surface
located in the front deflecting chamber in the back pass to
increase the heat absorption of low temperature reheater,
thus ensuring the reheater outlet steam temperature is
540℃ and no overheating happens to the reheater under
various load.
R&M Case Study
Boiler R&M (Qinling Power Plant #3, 200MW)
Item Before retrofit After retrofit
Unit capacity 200MW 200MW
High temp reheater
outlet steam temp515℃ 540℃℃℃℃
� DEC established a comprehensive retrofit scheme after performing
feasibility analysis and adequate demonstration for the combustion
system retrofit for Beilun Power Plant 2# imported boiler. The
scheme is to replace the original 36 pieces of dual-channel burners
with new type low NOx swirl PC burners self-developed by DEC, to
keep the original elevations of burners, to arrange OFA nozzles at
the proper positions of top layer of burners at the front and rear
walls, dividing the furnace into the combustion zone and burnout
zone so as to realize further staged combustion.
� The NOX emission is reduced from 700mg/Nm3 to 280~360
mg/Nm3 after the retrofit. Meanwhile, the boiler efficiency retains
unchanged. Hence, this retrofit met the environmental protection
requirement and realized its expected goal.
R&M Case Study
Boiler Burner Renovation (Beilun TPP #2, 600MW)
Item Before retrofit After retrofit
Unit capacity 600MW 600MW
Boiler efficiency 92.75% 92.97%
NOx emission (O2=6%) 633mg/Nm3 304mg/Nm3
R&M Case Study
Boiler Burner Renovation (Beilun TPP #2, 600MW)
50%50%
1. Applying new technology.
2. Replacement of components, which have exhausted their life due
to various reasons.
3. Change of components that are needed to adhere to prescribed
environmental standards.
4. Necessary modifications in the system to run the unit at rated
capacity with the available low calorific coals.
Typical Proposal for Indian TPP R&M Projects( LMZ Steam Turbine)
Indian LMZ 200MW Focus
DEC(India), Site ManagementDEC(India), Site Management
DEC, R&D Centre
(Design Institute)
DEC, R&D Centre
(Design Institute)
DEC, Power Plant Service Division (R&M Contractor)DEC, Power Plant Service Division (R&M Contractor)
ClientClient
Site Inspection
Diagnosis
Evaluation
Engineering of TPP
Detailed Design
…….
Site Inspection
Diagnosis
Evaluation
Engineering of TPP
Detailed Design
…….
DEC
Turbin
e
DEC
Turbin
e
ST (GT)&
Auxiliaries
ST (GT)&
Auxiliaries
DEC
Boiler
DEC
Boiler
Boiler
Auxiliaries
Boiler
Auxiliaries
DEC
Generator
DEC
Generator
Generator
Auxiliaries
Generator
Auxiliaries
Sub-vendor
Out of India
Sub-vendor
Out of India
System Auxiliaries
(Fans, Pumps,
Valves, Piping)
I&C (DCS)
Commissioning
……
System Auxiliaries
(Fans, Pumps,
Valves, Piping)
I&C (DCS)
Commissioning
……
Sub-vendor
Within India
Sub-vendor
Within India
Civil Construction
Erection
Materials
Fire-Fighting
Repair
……
Civil Construction
Erection
Materials
Fire-Fighting
Repair
……
R&M Project
Organization for India
R&M Case Study
Dongfang 200MW vs. Indian LMZ 200MW
Item Comparison Dongfang LMZ
1 Type 2F 2F
2 Rated Power 215MW 210MW
3 Max Power 219.9MW 215MW
4 Main Steam 12.75MPa/535℃℃℃℃ 12.74MPa/540℃℃℃℃
5 Reheat Steam 2.207MPa/535℃℃℃℃ 2.342MPa/540℃℃℃℃
6 Max Stream Flow 670 t/h 670 t/h
7 Speed 3000rpm 3000rpm
8 HP I + 11 I + 11
9 IP 11 11
10 LP 2x4 2x4
11 Weight 500T 500T
12 LP Last Row Blade 650 - 807 mm 765/740mm
Indian LMZ 200MW Focus
LMZ 200MW R&M is based on our RICH experience on 200MW manufacture/R&M and operation data accumulation
I. DEC has supplied 200MW Class Thermal Power Units to 66
power plants with 92 Boilers, 106 Turbines and 104 Generators.
II. Out of the 106 sets of 200MW steam turbines manufactured by
DEC, we performed flow path R&M to 42 units.
III. DEC also performed flow path R&M to 20 units of 300MW and 31
units of non-OEM 300MW units with various outputs.
IV. Since manufacturing the first 200MW class unit in the 1970’s,
DEC has applied advanced technologies to the original design,
adopting 600MW and 1000MW ultra-supercritical advanced
steam turbine technologies.
Indian LMZ 200MW Focus
Turbine factoryBrand new manufacture facility re-located in Deyang starting operation in May 2010, just
two years after the major earthquake which destroyed all the facilities.
It is the most advanced and the largest turbine manufacture facilities in the world.
Thank you and welcome to visit us
You have to see to believe it