Baima Steam Power Plant Case Study
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PWER/BPROS/eng/PWSC/03.13/CH/7397 © ALSTOM 2013. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited. Alstom contributes to the protection of the environment. This leaflet is printed on environmentally-friendly paper. One of the world’s largest operating CFB boilers. Baima is an anthracite fired 300 MWe power plant built in the Sichuan province of China. It was a demonstration plant for large capacity CFB boilers under the Transfer of Technology agreement to three of China’s major boiler manufacturers, and seven members of the Chinese Electric Power Design Institute. The deployment of large utility class Alstom CFBs was to help meet China’s rapid demand growth with clean, cost-effective power. Customer: ............................ Sichuan Baima CFB Demonstration Power Plant Co. Ltd Scope of supply: .................. 1 × 300 MWe Circulating Fluidised Bed boiler (CFB) Electrical output: ................. 300 MWe Commercial operation: ........ 2006 CHALLENGES • Fuel flexibility: The fuel as received at Baima is a very difficult fuel with low volatile matter and high ash content including stones. Alstom CFB boiler technology must accommodate to considerable variations in fuel quality that happen over a few operating hours. • No back-end flue gas cleaning systems required: 95% sulphur removal rate is reached without scrubber while the potential SO 2 is close to 12,000 mg / Nm 3 and a challenging low limestone consumption is required corresponding to a 1.6 Ca / S ratio. • Minimum load without oil support: Alstom CFB technology has the advantage of minimum load without oil support (technical minimum) firing anthracite while keeping the steam temperatures at the 540°C / 540°C rated values. CASE STUDY: STEAM PRODUCT SOLUTIONS Baima – China Circulating Fluidised Bed (CFB) Boiler
Transcript of Baima Steam Power Plant Case Study
PWER/BPROS/eng/PWSC/03.13/CH/7397 © ALSTOM 2013. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited. Alstom contributes to the protection of the environment. This leaflet is printed on environmentally-friendly paper.
One of the world’s largest operating CFB boilers.
Baima is an anthracite fired 300 MWe power plant built in the Sichuan province of China. It was a demonstration plant for large capacity CFB boilers under the Transfer of Technology agreement to three of China’s major boiler manufacturers, and seven members of the Chinese Electric Power Design Institute.
The deployment of large utility class Alstom CFBs was to help meet China’s rapid demand growth with clean, cost-effective power.
Customer: ............................ Sichuan Baima CFB Demonstration Power Plant Co. LtdScope of supply: .................. 1 × 300 MWe Circulating Fluidised Bed boiler (CFB)Electrical output: ................. 300 MWe Commercial operation: ........ 2006
CHALLENGES•Fuel flexibility: The fuel as received at Baima is a very difficult fuel with low volatile
matter and high ash content including stones. Alstom CFB boiler technology must accommodate to considerable variations in fuel quality that happen over a few operating hours.
•No back-end flue gas cleaning systems required: 95% sulphur removal rate is
reached without scrubber while the potential SO2 is close to 12,000 mg / Nm3 and a challenging low limestone consumption is required corresponding to a 1.6 Ca / S ratio.
•Minimum load without oil support: Alstom CFB technology has the advantage of minimum load without oil support (technical minimum) firing anthracite while keeping the steam temperatures at the 540°C / 540°C rated values.
CASE STUDY: StEAm produCt SolUTionS
Baima – ChinaCirculating Fluidised Bed (CFB) Boiler
PWER/BPROS/eng/PWSC/03.13/CH/7397 © ALSTOM 2013. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited. Alstom contributes to the protection of the environment. This leaflet is printed on environmentally-friendly paper.
For more information please contact Alstom Power:
Alstom PowerBrown Boveri Strasse 7
5401 BadenSwitzerland
Phone: +41 56 205 6923
Visit us online: www.alstom.com
CASE STUDY: StEAm produCt SolUTionSBAimA – CHiNA
proJECt rESuLtS•Alstom CFB technology met all the performance guarantees with a
1% increase in the boiler efficiency because of low unburnt carbon.•Low Nox emission over a wide range of operation has demonstrated
that 100 mg / Nm3 can be controlled with Alstom CFB technology without need of back end treatment such as SNCR.•Availability was continually improved to go up to 99% rate, after two
years of commercial operation.
Air ANd FluE gAS SyStEMS
2 × 50% primary air fans
2 × 50% secondary air fans
5 × 25% fluidising air fans
2 × 50% induced draft fans
Air hEAtEr
Quadrisector air heater
ASSoCiAtEd EquipMENt
2 × 100% limestone injection systems
4 rotary ash coolers
Gravimetric coal feeders
Drag chain conveyors
tECHNiCAL SpECifiCAtioNS
tEChNiCAl dAtA oF StEAM gENErAtor Guarantee
Main steam flow 1,025 t / hr / 2,260 M lb / hr
Superheater outlet steam pressure 175 Bar / 2,538 psi
Superheat / reheat steam temperature 540°C / 540°C (1,004°F / 1,004°F)
Feedwater temperature 281°C / 538°F
FuEl (AS rECEivEd) DesiGn ranGe of Coals
Origin / type Chinese anthracite
Gross calorific value (MJ / kg) 19.2 17.2–20.6
(BTU / lb) 8262
Moisture content %wt 7.69 4.69–11.00
Ash content %wt 35.27 30.27–40.27
Sulphur %wt 3.54 2.94–4.30
Volatile matter %wt 8.55
Fixed carbon %wt 48.41
FluE-gAS EMiSSioN lEvElS At StACk mG / nm3 @ 6% o2 lB / mmBtu
NOx 250 0.20
SO2 600 0.50
