Dynamic Biogas Upgrading as a novel tool for production and demand management in electricity production from biomass

Transcription

1 .. as a novel tool for production and demand management in electricity production from biomass Large Scale Bioenergy Lab Southern Denmark Schleswig K.E.R.N. Jens Born Lars Jürgensen Fachhochschule Flensburg lars.juergensen@fh-flensburg.de September 12,

2 . Agenda. 1 Renewable Energies Sabatier Process. 2. 3

3 . Motivation Electricity demand and renewable production curve Renewable Energies Sabatier Process Renewables are often not controllable Wind and solar power fluctuating AD: straight base load production (SRU 2010)

4 . Motivation Electricity demand and renewable production curve Renewable Energies Sabatier Process Renewables are often not controllable Wind and solar power fluctuating AD: straight base load production. Task. Demand and Production management. complimentary to fluctuating renewables (SRU 2010)

5 Renewable Energies Sabatier Process. Renewable Energy in Schleswig-Holstein

6 . Goals set by the government Renewable Energies Sabatier Process Renewable Energy Act (EEG) 35 % renewable power production by 2020

7 . Goals set by the government Renewable Energies Sabatier Process Renewable Energy Act (EEG) 35 % renewable power production by 2020 Netzzugangsverordnung (NZV), German law m 3 /a by % accomplishment by 2012 supply up to 10 km

8 . Status Quo State of the Art of biogas upgrading Renewable Energies Sabatier Process State of the art: pressure swing adsorption water/amin scrubbing membrane separation disadvantage: large scale is needed German biogas plants are farm scale

9 Renewable Energies Sabatier Process. Methanation of CO 2 Hydrogen generation from surplus electricity no infrastructure for storage, transportation and utilization

10 Renewable Energies Sabatier Process. Methanation of CO 2 Hydrogen generation from surplus electricity no infrastructure for storage, transportation and utilization The Sabatier Process CO 2 + 4H 2 CH 4 + 2H 2 O H 0 = 167kJ/mol

11 Renewable Energies Sabatier Process. Methanation of CO 2 Hydrogen generation from surplus electricity no infrastructure for storage, transportation and utilization The Sabatier Process CO 2 + 4H 2 CH 4 + 2H 2 O H 0 = 167kJ/mol Synthetic Natural Gas (SNG) existing infrastructure long term storage

12 Renewable Energies Sabatier Process. Methanation of CO 2 Hydrogen generation from surplus electricity no infrastructure for storage, transportation and utilization The Sabatier Process CO 2 + 4H 2 CH 4 + 2H 2 O H 0 = 167kJ/mol Synthetic Natural Gas (SNG) existing infrastructure long term storage Source of CO 2?!

13 . Proposed Process Scheme Biogas plants as high concentrated CO 2 source substrate biogas generation CH 4, CO 2 CHP P el. Q CHP

14 . Proposed Process Scheme Biogas plants as high concentrated CO 2 source substrate biogas generation CH 4, CO 2 CHP P el. Q CHP P sur. electrolysis H 2 methanation CH 4 Q Sab.

15 . Electric Grid-Integration of renewables Production of Electricity and Heat

16 . Methanation Storage of Surplus Electricity

17 . Energy and Material Fluxes ṅ B x B CO 2 CO 2 + 4H 2 CH 4 + 2H 2 O ṅ SNG x SNG CH 4 x B CH 4 ṅ H2 Q ṅ H2 O H 2 O 1 2 O 2 + H 2 ṅ O2 P sur.

18 . Energy and Material Fluxes ṅ B x B CO 2 CO 2 + 4H 2 CH 4 + 2H 2 O ṅ SNG x SNG CH 4 x B CH 4 ṅ H2 Q ṅ H2 O H 2 O 1 2 O 2 + H 2 ṅ O2 P sur. P sur. = x CO B 2 P CHP xch B, (1) 4 η CHP η Sab.

19 . Mapping of Renewable Energy Production Four northern counties of Schleswig-Holstein weak grid

20 . Mapping of Renewable Energy Production Four northern counties of Schleswig-Holstein weak grid high installed wind capacity

21 . Mapping of Renewable Energy Production Four northern counties of Schleswig-Holstein weak grid high installed wind capacity > 400 biogas plants

22 . Mapping of Renewable Energy Production Four northern counties of Schleswig-Holstein weak grid high installed wind capacity > 400 biogas plants all plants near CNG grid

23 . Results Overlapping of biogas production, wins power production and SNG infrastructure dynamic biogas upgrading as decentralized conversion process Potential surplus power conversion by dynamic biogas upgrading: P sur. = 386MW Assuming 1900 h/yr of surplus production: W sur. = 0.61TWh Production of SNG: V = m 3 /yr

24 . Discussion and Outlook electrolyzer market trend biogas founding structure payment of control power and dispatch CNG grid as important part of future renewable energy systems What is a stable grid in renewable energy systems worth to us?