DONGFANG ELECTRIC CORPORATION LIMITED Dr. Harry Chen, Vice President April 20 th, 2012
General Introduction China Central Government 100% 50.03% Listed in Shanghai Stock Exchange Code: 600875 Hong Kong Exchanges Code: 1072
General Introduction 40,000 30,000 20,000 Revenue: 6.8 Billion USD Current Assets: 13.1 Billion USD Total employee: 19,990 (1 RMB = 0.1585USD) 10,000 0 20042005200620072008200920102011 Annual Output (MW) No.1 in the world consecutively for 8 years 5,000 MW of annual production capacity for R&M jobs (~25 Units) New Orders Composition
Unit Class and Fleets 1000 MW Ultra-super Critical 600 / 660 MW Ultra-super Critical, Super-Critical, Sub-Critical 300 / 350 MW Super-Critical, Sub-Critical 200 / 210 MW Sub-Critical CFB Unit 50/60MW, 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
Manufacture, Hydro Francis Type: 1 MW to 770 MW Kaplan Type: 1 MW to 200 MW Bulb Type: Pelton Type: Pump Storage Type: 1 MW to 75 MW 1 MW to 200 MW 50 MW to 300 MW Reference: Hundreds of Hydro Units capacity from 1MW to 770MW 770MW, World 2nd Largest Francis Type 75MW, World Largest Bulb Type
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 Sets M701D, 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
Manufacture, Wind Double-Fed Type: 1MW, 1.5MW, 2.5MW 3MW, 5MW Direct-Drive Type: 1.5MW, 2.5MW, 3MW Reference: More than 2,600 units installed 4,000 units contracted
Solar Power Portfolio Manufacture, Solar
DEC Manufacture Solar Thermal Hydro DEC Limited Nuclear Gas Turbine Wind
DEC Capabilities Thermal Hydro Nuclear Wind Gas Solar Equipment Manufacture Plant Turnkey EPC * Plant Service Remark: *only a few projects
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 Total 89 Units in 28 Plants (41,860MW) 34 Units in operation (11,535MW)
R&M Case Study A Typical 200MW Steam Turbine Flow Path R&M Xuzhou Power Plant, unit #7, flow path R&M in 1998 (Commissioning in 1985, Designed Heat rate 8450 KJ/KWh) HP Efficiency IP Efficiency LP Efficiency Heat Rate KJ/KWh (KCal/KWh) Before R&M 78.8% 88.3% 77.6% 8625 (2060) Design Value for R&M 85 % 92.5% 87% 8143 (1945) After R&M 85.5% 92.6% 87.9% Exhaust Steam Pressure: 5.2 kpa 8128 (1941) 6%
R&M Case Study A Typical R&M Case in China (Xiangyang Power Plant #1) Capacity increased from 300MW to 330MW (Commissioning in 1998 ; R&M in 2011 ) According to Site Inspection & Evaluation, Experiments, Analysis, Computation, we concluded and provided the R&M solutions comprising three portions. Part One Part Two Upgrade and Renovation Refurbishment Part Three Miscellaneous
R&M Case Study Part One Upgrade and Renovation No. Modification Items Reduce of Heat Rate (KCal/KWh) 1 Optimization of Pulverizing and Combustion System 3.5 Reduce of Auxiliary Power Consumption (%) 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
R&M Case Study Part Two No. Refurbishment 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
Summary R&M Case Study A Typical R&M Case in China (Xiangyang Power Plant #1) Capacity increased from 300MW to 330MW Modification Items Before R&M After R&M Heat Rate of the generating Unit (by total R&M) Heat Rate of the generating Unit (by ST modernization) Heat Rate of the Steam Turbine 10224 kj/kwh (2446 kcal/kwh) 10224 kj/kwh (2446 kcal/kwh) 8686 kj/kwh (2075 kcal/kwh) 10% 9376 kj/kwh (2240 kcal/kwh) 9523 kj/kwh (2275 kcal/kwh) 7920 kj/kwh (1892 kcal/kwh) Plant Output 300MW 330MW 8% Lifecycle 25-10=15 years The Investment will be returned in 3 ~ 4 years. Refurbish to 25 years
R&M Case Study Boiler R&M (Xiangyang Power Plant #1) Capacity increased from 300MW to 330MW 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 1500m 2 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 10% Exit gas temperature (after correction) 145 135 Boiler efficiency (after correction) 91.92% 93.22% NOx emission (O 2 =6%) 422mg/Nm 3 360mg/Nm 3 High temperature reheater outlet steam temperature 522 540
Boiler R&M (Qinling Power Plant #3, 200MW) 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 770m 2 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. Item Before retrofit After retrofit Unit capacity 200MW 200MW High temp reheater outlet steam temp 515 540 R&M Case Study
R&M Case Study Boiler Burner Renovation (Beilun TPP #2, 600MW) 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 NO X emission is reduced from 700mg/Nm 3 to 280 ~360 mg/nm 3 after the retrofit. Meanwhile, the boiler efficiency retains unchanged. Hence, this retrofit met the environmental protection requirement and realized its expected goal.
Item Before retrofit After retrofit Unit capacity 600MW 600MW Boiler efficiency 92.75% 92.97% R&M Case Study Boiler Burner Renovation (Beilun TPP #2, 600MW) NOx emission (O 2 =6%) 633mg/Nm 3 304mg/Nm 3 50%
Indian LMZ 200MW Focus Typical Proposal for Indian TPP R&M Projects ( LMZ Steam Turbine) 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.
R&M Case Study R&M Project Organization for India Client DEC, Power Plant Service Division (R&M Contractor) DEC(India), Site Management DEC, R&D Centre (Design Institute) DEC Turbin e DEC Boiler DEC Generator Sub-vendor Out of India Sub-vendor Within India Site Inspection Diagnosis Evaluation Engineering of TPP Detailed Design. ST (GT)& Auxiliaries Boiler Auxiliaries Generator Auxiliaries System Auxiliaries (Fans, Pumps, Valves, Piping) I&C (DCS) Commissioning Civil Construction Erection Materials Fire-Fighting Repair
Indian LMZ 200MW Focus 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.
Turbine factory Brand 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.
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