production of synthetic fuels using electrolysis
DESCRIPTION
The objective of this study is to investigate in depth the technical and economic feasibility of producing synthetic hydrocarbon fuels from synthesis gas, which is formed by high temperature (600 – 1000 degC) electrolysis of steam and CO2 using the solid oxide electrolyser cell (SOEC). Furthermore, catalytic conversion of synthesis gas into a number of fuels is a well-known industrial process. The vision behind the project is that renewable energy (e.g. electricity from wind turbines) may be converted into synthetic fuels such as methane (CH4), methanol (CH3OH) or dimethyl ether (DME). Synthetic fuel made from renewable energy may become interesting when fossil fuels become scarcer in the future. A conceptual process model is developed based on experimental results from our laboratory and open literature. This work demonstrates that production of DME from electrolysis derived synthesis gas is technically feasible.TRANSCRIPT
Production of Syhthetic Fuels using Electrolysis
Shital Das
PhD Superviors: Mogens Mogensen, Peter V. Hendriksen, John B. Hansen, Sune D. Ebbesen
2 Risø DTU, Technical University of Denmark
Renewable Energy: Demand and Supply Mismatch
Curtsey: Anne Hauch
3 Risø DTU, Technical University of Denmark
Possibilities to Capture and Use CO2
C. Graves, et al. Renewable and Sustainable Energy Reviews 15 (2011) 1-23
4 Risø DTU, Technical University of Denmark
Renewable Energy: Demand and Supply – Closing the Mismatch
PowerPlant
CHP
Boiler
Transport
Elec.demand
Districtheating demand
Individualheating
Heatstorage
WindPower
Fuel
Fuel
Fuel
Electrolyser/ H2 Storage
Brian Vad Mathiesen, Fuel Cells and electrolysers in future energy systems, PhD Thesis, Aalborg University
Synthetic fuels are used for heating and electricity
5 Risø DTU, Technical University of Denmark
Renewable Energy: Demand and Supply Closing the Mismatch
Brian Vad Mathiesen, Fuel Cells and electrolysers in future energy systems, PhD Thesis, Aalborg University
PowerPlant
CHP
Boiler
Transport
Elec.demand
Districtheating demand
Individualheating
Heatstorage
WindPower
Fuel
Fuel
Fuel
Electrolyser/ H2 Storage
Synthetic fuels are used for transportation
6 Risø DTU, Technical University of Denmark
Dimethyl Ether (DME) as Transportation Fuel
Lower greenhouse gas (CO2 and NOx) and soot emission
Can be used in present diesel engine technology with some modification
Comparable engine efficiency with diesel
7 Risø DTU, Technical University of Denmark
How to Split CO2 and H2O?
Building block for any synthetic fuel synthesis
Synthesis gas
8 Risø DTU, Technical University of Denmark
Concept of SOEC stack
9 Risø DTU, Technical University of Denmark
Proposed DME synthesis process
10 Risø DTU, Technical University of Denmark
Abundant renewable energy can be used in SOEC to convert steam and CO2 to synthesis gas, which can
catalytically be converted to dimethyl ether.