The GoBiGas Project Efficient transfer of biomass to biofuel

Transcription

1 The GoBiGas Project Efficient transfer of biomass to biofuel European Gas Technology Coference Copenhagen May 12, 2011 Ingemar Gunnarsson Göteborg Energi AB 1

2 Our vision. Göteborg Energi shall actively contribute to the development of a sustainable society in Göteborg

3 Our vision: Only renewable gas in the future Short term target 2020 for Gothenburg > 1 TWh of biomethane Short term target 2020 for Sweden > 15 TWh of biomethane Long term target only renewable energy sources Capacity Bio gas Natural gas Town gas Time Today 3

4 Green gas concept A huge market potential is opened for biogas The reliability of the biogas supply improves Biomethane Industrial processes CHP/ Heat Natural gas Vehicle fuel 4

5 GoBiGas Gothenburg Biomass Gasification Project Commercial scale 100 MW biomethane (biomethane) Operating period 8000 hr/yr 80 MNm 3 /yr or 800 GWh/yr Gasification of forest residues Production of biomethane for distribution in the existing gas grid. Plant situated in the harbor of Gothenburg, fuel transport by ship or by train Joint project Göteborg Energi and E.ON 5

6 GoBiGas step by step Performance goals: Biomass to biomethane 65-70% Energy efficiency - >90% Phase 1: 20 MW (2000 Nm 3 /hr) 160 GWh/year (or 16 MNm 3 /yr) Indirect gasification In operation 2013 Phase 2: MW ( Nm 3 /hr) GWh yearly (64-80 MNm 3) Technology not yet chosen Building after evaluation of the first phase 6

7 Commercial development of gasification technology in Sweden GoBiGas Phase 1: Large scale demonstration plant GoBiGas Phase 2: 1/2 of specific cost compared to Phase 1? 2020: 1/3 of specific cost compared to Phase 1? GoBiGas Phase 1 GoBiGas Phase 2 7

8 Technical principles Forest residues Dryer Wood pellets Fuel handling Steam Air preheater Flue gas Hot water Bag filter De-NOx Hot water Gasifier Bed material Combustor Air Sulphur rich gas Tar removal Tar Tar Gasification Methanation Tar removal Sulphur removal Shift Steam CO2 to inert Biomethane Drying Upgrading Methanation CO2- removal gas system/ atm 8

9 Reference plant: Gasification in Güssing, Austria Gasification in fluidized bed with separate combustion zone (in-direct, allothermal gasification) 8 MW biofuel Gas engine 2 MWe and 4,5 MWth to local district heating system Operating time incl 2010 > hours 9

10 GoBiGas Phase 1 Phase 2 10

11 GoBiGas phase 1 Existing hot water boilers, fired with wood pellets 11

12 Project status May 2011 State funding 222 MSEK granted from the Swedish Energy Agency and approved by the EC Investment decision was taken December 2010 Gasification technology Delivered by Metso Power and Repotec in cooperation Methanation technology Delivered by Haldor Topsöe Permits Environmental permit granted for Phase 1, applications building permit for Phase 1 in process Preparatory work for environmental permit and building permit for Phase 2 Construction work has started on site Plant planned to be in operation

13 GoBiGas Phase 1 Consumption: Production: Fuel (wood pellets) 32 MW Biomethane 20 MW Electricity 3 MW District heating 5 MW RME (bio-oil) 0,5 MW Heat to heat pumps 6 MW 13

14 Evaluation of GoBiGas 1 Evaluation during 7 years Cooperation between GoBiGas AB and the main suppliers Purpose to learn from the demonstration plant to make it possible to scale up to 100 MW in phase 2 Evaluation of the following parameters: Product quality Plant performance efficiency etc. Plant availability Environmental footprint 14

15 Pilot: Gasification of biomass at Chalmers University of Technology Built to further develop indirect gasification and grow local expertise for future projects Potential for commercialization, can be added onto any Circulating Fluidized Bed (CFB) furnace Currently producing 2 MW of green gas now being utilized in existing boiler Fuel Development center for indirect gasification at Chalmers under establishment Gasifier Biogas Biomass Heat 15

16 Chalmers pilot gasifier in connection with existing boiler o o 12 Gasifier turned Furnace 2 Fuel Feeding Furnace 3 Wind Box 4 Cyclone 5 Convection path 6 Secondary Cyclone 7 Textile Filter 8 Fluegasfan 9 Particle Distributor 10 Particle Cooler 11 Gasifier 12 Particle Seal 1 13 ParticleSeal 2 14 Fuel Feeding Gasifier 15 Fuel Hopper Gasifier Fuel Hopper 1 18 Fuel Hopper 2 19 Fuel Hopper 3 20 Sludge Pump 21 Hopper 22 Ash Removal

17 Thank you for listening! 17