Dánské zkušenosti s efektivním využitím bioplynu (případová studie Danský BPS Limfjordens Bioenergi)

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1 Dánské zkušenosti s efektivním využitím bioplynu (případová studie Danský BPS Limfjordens Bioenergi) Konference BIOMASA, BIOPLYN & ENERGETIKA prosince 2014, Třebíč Jørgen Hinge Danský Technologický institut

2 Danish Technological Institute STATUS An independent, non-profit institution Approved as a technological service institute by the Danish Ministry of Science, Technology and Innovation Employées, more than 50 in Renewable Energy OBJECTIVE The objective of the Danish Technological Institute is to address the needs of the industrial sector and society as a whole through the development and dissemination of technological innovation.

3 Agenda Biogas in Denmark - an overview Use of biogas in Denmark Heat production CHP Combined heat & Power Upgrading to natural gas quality and transportation fuel Limfjordens Bioenergy a business case for optimized use of biogas 3 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

4 Biogas in Denmark (1) Development driven by farmers Energy production Optimization of slurry to biofertilizer Optimized distribution of manure/slurry (centralized biogas plants) Most plants established before 2002 Now we have new ambitions for increased biogas production 4 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

5 Biogas in Denmark (2) App. 70 Farm Biogas Plants Animal manure/slurry main biomass Small amounts of industrial waste kwe Heat used for: (pig) Stables and farm house (grain drying, small district heating, drying of separated digestate) 5 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

6 Biogas in Denmark (3) 24 Centralized Biogas Plants suppliers of biomass Manure/slurry + organic waste from (food) industries CO-generation electricity sold to the public grid Heat used for district heating (and proces heating) 6 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

7 Use of biogas in Denmark First small farm plants (early 70 es): only heat production Golden years ( ): Farm and centralized plants Biogas almost always used for CHP Present situation: Total energy production app 4PJ Political ambition: 4PJ 40PJ The challenge: Other applications than CHP necessary! 7 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

8 Upgrading of biogas Injection into natural gas grid Well developed grid Domestic NG-resources are used up in years Biogas for transport Renewable Energy in transport is a major challenge 8 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

9 Limfjordens Bioenergy a business case for optimized use of biogas 9 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

10 Challenges at Limfjordens Bioenergy Increasing gas production No chance of increasing biogas sale for CHP Too high internal heat consumption for proces heating Heat loss from digester (top, bottom)? Inefficient heat exchangers? Wrong control/regulation settings? 10 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

11 Business case option 1 Increasing gas production with additional biomass and proces optimization Installing a wood chip fired boiler for proces heating Upgrading of the biogas ad injection into the natural gas grid 11 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

12 Feasibility, option 1 Investments (gas pipeline, upgrading plant, wood chip boiler) 4,06 mill Euro Annual bio methane production 4,3 mill m 3 CH 4 Present value of biogas 45 cent/m 3 CH 4 Costs of upgrading 48 cent/m 3 CH 4 Production price for the upgraded biogas 93 cent/m 3 CH 4 Todays price of natural gas 99 cent/m 3 CH /12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

13 Business case option 2 Spread sheet for calculation and modelling of heat loss better insulation on digester top Frequent cleaning of heat exchangers Modification of setpoints we re working on it 13 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

14 Feasibility, option 2 Investments (better insulated tank top) Expected additional annual income Simple payback time Euro Euro 1,7 years 14 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by

15 Conclusions Well developed use of biogas heat through district heating plants Ambitious target for biogas production, 4 PJ 40PJ Upgrading and injection for many new plants Thanks for your attention Jørgen Hinge, DTI, jhi@teknologisk.dk 15 11/12/2014 Contract No. IEE/09/848 SI Project duration 01/05/ /10/2012 Supported by