468107 Alternative Transport Fuels and Their Production Using Surplus Renewable Electricity, Water and CO2
If an alternative renewable fuel is able to penetrate the market, two main requirements need to be met: its potential for an implementation strategy into an existing market as well as a technically feasible and economic production. Put differently, a renewable fuel should not require a significant alteration of the fuel infrastructure, thereby allowing a gradual integration in the existing infrastructure. Additionally, a range of different fuels for different usages need to be offered. Just as the fossil fuel market, the renewable fuel market needs diversification.
At the Institute of Energy and Climate Research (IEK-3) of Forschungszentrum Jülich, intensive research is being carried out on a comparable overview of the several products and process routes of PTF. In this contribution, investigations on two different routes from synthesis gas to an alternative renewable fuel will be outlined. The respective products of the two outlined processes are Fischer-Tropsch (FT)-diesel and polyoxymethylene dimethylene (POMDME). Both products can be blended with conventional diesel and with each other because they have appropriate compatibility. Therefore, an implementation strategy into the existing fuel market is practicable.
Despite an equal product application, the comparison of both technologies is widely diversified. At the molecular level, FT-diesel is closely related to conventional diesel; this applies less to POMDME. POMDME also has a considerably lower heating value; however, it has great potential as a fuel due to its beneficial combustion properties.
Although nowadays FT is not used for PTF in large scale, state-of-the-art FT-processes have been used industrially for many decades. In contrast to FT, owing to low product demand, processes for POMDME have not yet been developed on an industrial scale. Both processes have various options for the interconnection of system components and for complete process control. The system’s interconnections as well as the process parameters have influence on raw material and energy demand and also product quality, co- and byproducts. Just as the product specifications, the process analysis results will play an important role in the fuel implementation strategy.