GreenSynFuels

The purpose of the project is to select and validate technology concepts for the establishments of a Danish production of green synthetic fuels primarily for fuel cells. In the project, two concepts were derived through carefully consideration and plenum discussion by the project group members: CONCEPT 1 - methanol/DME synthesis based on electrolysis assisted gasification of wood; CONCEPT 2 - methanol/DME synthesis based on biogas temporarily stored in the natural gas network. Concept 1 is clearly the most favored and has been analysed for its techno-economic feasibility. The project group has decided to focus on large scale plants as this scale is favorable. Therefore, the dimensioning imput of the concept 1 plant is 1000 tons wood per day. The SOEC electrolyzer unit is dimensioned by the need of hydrogen to balance the stoichiometric ration of the methanol synthesis reaction, which will result in 141 MW installed SOEC. The resulting methanol output is 1.050 tons methanol per day. In comparison to a traditional methanol synthesis plant operating on biomass gasification without electrolysis, the methanol production efficiency is boosted from 59% to 71%. The methanol production was found to be 120 USD/barrel equivalents, which is close to the current oul price.