Cool & Hot 10. May Paris. High-efficient co-generation plants

Transcription

1 Cool & Hot 10. May Paris High-efficient co-generation plants

2 High-efficient co-generation plants example in Linz City

3 Project Background and motivation: Continuing CHP (combined heat und power production since 1970) Fuel diversification CO2 reduction approx t CO2 per year District heating from renewable energy sources Supply guarantee for district heating Increasing reliability Fulfilling of costumer requirements Green electricity and bio heating Highest fuel efficiency fulfills ecological and economical interest Regional creation of value AET selected as turnkey supplier: 2004 Mechanical and electrical package Total efficiency: %

4 District heating output Design of the biomass plant District heating load duration curve (basis for biomass) Peak load boiler Needs of district heating 100 District heating storage tank Production of district heating Buffering possibility district heating storage tank 50 Gas- and steamturbines Biomass power plant for district heating base load Hours per year

5 Concept total efficiency: % Biomass (15,2 t/h = 35 MW) HP-Steam Electricity: (8,9 MW 0,7 MW = 8,2 MW) District Heating DH: (21,9 MW) Flue gas (Flow: Nm 3 /h (NO x : < 250 mg/nm 3 ) (Dust: < 2 mg/nm 3 ) Air ( Nm 3 /h) Bottom Ash (<0,1 t/h) Fly Ash (<0,1 t/h)

6 Moisture content in fuel (%) Fuel Moisture 55 Fuel Moisture variation at Linz Mitte (ex JAN 2007) Half hourly Average Daily Average Dates

7 District Heating, Austria Linz AG, 2005 Fuel: Fresh wood Fuel heat input 35 MW Electrical power 9 MW District heat capacity 22 MW Main steam data 67 bar 462 C Firing system: Wood over 2 Spreader 35 MW Gas burner for the starting up 10 MW O2 2 2,2 % CO mg/nm 3 NO x mg/nm 3

8 AET Boiler Concept The AET boiler concept is based on a longtime experience Natural circulation-boiler with unheated downcomers safe water circulation Very limited refractory lower maintenance costs less slagging higher safety 3 flue gas passes: C cooling of flue gas in front of SH Spreader stoker & travelling grate firing efficient combustion with low excess air and emissions reliability fuel flexibility low running-/service costs

9 Selected References. Norske Skog As employees at Aalborg Industries 1987 Norske Skog 35 MW Norway Bark. Fibrogen. Fibropower. Randers. Slagelse. Kronoply.. Gütersloh Western Wood..Cofely-BCN Biopower. Neumarkt Pannovosges. Boehringer FunderMax.. Linz Zignago Fibropower 48 MW England Poultry Litter 1993/ 1999 Fibrogen 51 MW England Poultry Litter / MBM 1994/ 2000 Pannovosges 46 MW France Waste Wood 17.B 1997/ 2002 Neumarkt 100 MW Germany Waste Wood 17.B As AET 2000 Gütersloh 60 MW Germany Waste Wood 17.B 2002 Kronoply 64 MW Germany Wood Waste 2004 Schneider 27 MW Germany Wood Waste 1988 Slagelse 34 MW Denmark Straw 2004 Boehringer 70 MW Germany Waste Wood 17.B 2005 Linz 35 MW Austria Wood. Buddusò 2008 Western Wood 48 MW Wales, UK Wood 2006 FunderMax 50 MW Austria Waste Wood 17.B 2009 Randers 95 MW Denmark Biomass / coal 2011 Cofely - BCN 55 MW France Wood 2011 Zignago 49 MW Italy Wood, energy crops 2012 Buddusò 50 MW Italy Wood, energy crops

10 CHP Plant, France GDF Suez - Cofely, Bio Cogelyo Normandie, 2011 Fuel: Wood chips, fresh wood Fuel heat input 55 MW Heat supply 36 MW Electrical power 9 MWe Main steam 92 bar C Firing system: Wood chips over 3 spr. Burner for start up 55 MW 16 MW Scope: boiler, boiler house, flue gas cleaning, feed water system.

11 Thank you questions? Further information: Frank Scholdann Lund

12 Biomass Power Plant, Wales Western Wood Energy Plant, Port Talbot, 2008 Fuel: Fresh wood, saw dust, trimmings from forest, sawmill residue. Fuel heat input Electrical power 48 MW 15 MW Main steam 92 bar 512/522 C Firing system: Wood chips over 3 spr. Oil burner for start up 48 MW 15 MW NO x ~200 mg/nm 6%O 2 CO mg/nm 2 Handover O&M contract 2 weeks ahead 5 years Availability in test period 99,3%

13 Biomass Power Plant, Wales