The GoBiGas-project Green Gas from the Swedish Forest Ingemar Gunnarsson Göteborg Energi

Transcription

1 The GoBiGas-project Green Gas from the Swedish Forest Ingemar Gunnarsson Göteborg Energi

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3 Biogas en väg till det hållbara transportsamhället 40 TWh 60 TWh 50 TWh 60 TWh (förgasning) Skogsavfall 10 TWh (rötning) 10 TWh Mat-, industrioch jordbruksavfall

4 Bakgrund och Syfte The purpose of the GoBiGas-project Climate targets require great efforts Bio-methane expected to play important role in transition from fossil dependent society. To increase bio-methane production, complementing technologies to anaerobic digestion are required. GoBiGas - Gothenburg Biomass Gasification Project GoBiGas shall in a commercial scale demonstrate the possibilities of gasification to produce renewable and CO2-neutral bio-methane

5 Project history Pre-studies gasification for biogas production in 2005 Ambition to build a large plant of 100 MW 100,000 vehicles A first pilot study to gain an understanding of the technology Studies from different vendors and evaluation of possible solutions Selection to go ahead and examine a specific solution Decision to split the project into a smaller demonstration plant, to be followed by a plant of commercial size Awarded funding from the Swedish Energy Agency Sep 25, 2009 State aid approval from the European Commission Dec 14, 2010 Board decision to implement Dec 16, 2010

6 Bakgrund och Syfte GoBiGas Facts in short Building the first plant in the world to produce high quality bio-methane from biomass continuously through gasification Using forst residues as feed stock High efficiency Polygeneration producing fuel, heat and in coming plants also electricity 2nd generation renewable fuel The first Swedish plant to inject biomethane into the national grid with possible consumers: Vehicle fuel Feedstock to process industry Fuel to CHP or heat production Commercial scale in two phases: 20 MW Demonstration plant partly financed by Swedish Energy Agency Construction almost complete In operation late this year When Phase 1 is proven successful and conditions for acceptable revenues can bet met: MW commercial plant Selected project by the EU- Commission in NER300

7 Bakgrund och Syfte GoBiGas a step-by-step development Chalmers Lab-reactor The Chalmers gasifier Chalmers 2-4 MW Pilot plant GoBiGas Phase 1 20 MW bio-methane Demonstration plant GoBiGas Phase MW bio-methane Commercial Plant

8 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

9 GoBiGas Phase 1 Phase 2

10 GoBiGas Plant - phase 1, 20 MW bio-methane Existing hot water boilers, fired with wood pellets GoBiGas Site Office

11 Technical principles Forest residue s 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 Bio methane Drying Upgrading Methanation CO2- removal gas system/ atm 11

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13 Main suppliers Strategy for implementation Gasification Contract with Metso Power in Gothenburg. Metso Power has a license agreement with Repotec from Austria. Reference plants: Güssing, Austria and Senden, Germany Methanation Contracts with Haldor Topsoe from Denmark design/ license and catalyst supply. Gasification Methanation EPCM Contract with Jacobs Process BV from the Netherlands. Engineering, Procurement, Construction Management Overall coordination Utilities Building

14 Overall performance goals Biomass to bio-methane > 65 % Energy efficiency > 90% Planned operation 8000 h/year Production Bio-methane District Heating Fuel Electricity RME (bio-oil) 20 MW 160 GWh/ yr 16 MNm3/ yr 50 GWh/yr Consumption 32 MW 3 MW 0,5 MW

15 GoBiGas Phase 1 Phase 2

16 GoBiGas Phase 1 Phase 2

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19 Operation of gasifier nov okt 2014

20 Evaluation of GoBiGas Phase 1 Evaluation during 7 years until 2020 GoBiGas Cooperation between Göteborg Energi AB/ GoBiGas and the main suppliers Phase 1 Phase 2 Purpose to learn from the demonstration plant to enable scaling up to 100 MW in phase 2 Evaluation of the following parameters: Product quality Plant performance efficiency etc. Plant availability Environmental footprint Maintenance needs Operating costs 20

21 Well to Wheels climate impact (g CO 2eq /km) Modern low-consuming personal vehicle Source: Well-to-Wheels rapport 2011, APPENDIX 1, Summary of WTW Energy and GHG balances, and Renewable electricity consumption (CSI 031/ENER 030) - Assessment published Apr European Environment Agency

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