Fischer-Tropsch products from biomass-derived syngas and renewable hydrogen

Abstract

Global climate change will make it necessary to transform transportation and mobility away from what we know now towards a sustainable, flexible, and dynamic sector. A severe reduction of fossil-based CO 2 emissions in all energy-consuming sectors will be necessary to keep global warming below 2°C above preindustrial levels. Thus, long-distance transportation will have to increase the share of renewable fuel consumed until alternative powertrains are ready to step in. Additionally, it is predicted that the share of renewables in the power generation sector grows worldwide. Thus, the need to store the excess electricity produced by fluctuating renewable sources is going to grow alike. The "Winddiesel" technology enables the integrative use of excess electricity combined with biomass-based fuel production. Surplus electricity can be converted to H 2 via electrolysis in a first step. The fluctuating H 2 source is combined with biomass-derived CO-rich syngas from gasification of lignocellulosic feedstock. Fischer-Tropsch synthesis converts the syngas to renewable hydrocarbons. This research article summarizes the experiments performed and presents new insights regarding the effects of load changes on the Fischer-Tropsch synthesis. Long-term campaigns were carried out, and performance-indicating parameters such as per-pass CO conversion, product distribution, and productivity were evaluated. The experiments showed that integrating renewable H 2 into a biomass-to-liquid Fischer-Tropsch concept could increase the productivity while product distribution remains almost the same. Furthermore, the economic assessment performed indicates good preconditions towards commercialization of the proposed system.

Power-to-liquidviasynthesis of methanol, DME or Fischer–Tropsch-fuels: a review

“…422 Instead of storing excess electricity in H 2 storage facilities after electrolysis, current work indicates that the direct utilisation by adapting the H 2 /CO ratio can be used while increasing the productivity and simultaneously keeping the product distribution range almost unchanged. 424 As already mentioned, the product distribution strongly depends on the contact time between the catalyst and educt gas. Therefore increasing GHSV result in a decrease of the CO conversion as well as the C 5+ .…”

Catalytic Production of Jet Fuels from Biomass

“…As shown in Figure 2, the GTJ route is comprised of two different processes, namely, biomass gasification to syngas (H 2 /CO), followed by Fischer-Tropsch conversion of this syngas into jet fuel hydrocarbons [52]. Gasification is a well-developed technology that allows conversion of virtually any carbon source (natural gas, coal, biomass) into a mixture of gaseous species (e.g., CO, H 2 , CO 2 , CH 4 ) by applying a treatment at high temperatures under a carefully controlled oxidizing atmosphere (e.g., air, steam, oxygen).…”

Mixed-Integer Linear Programming (MILP) Approach for the Synthesis of Efficient Power-to-Syngas Processes

“…Furthermore, its intermediate location within the overall production chain, from feedstocks to chemicals or fuels, allows for existing downstream processes to be run without any substantial modifications and, simultaneously, to benefit from a sustainable feed stream. Due to the fact that syngas can be readily converted into liquid fuels, i.e., via Fischer-Tropsch synthesis (Gruber et al, 2019), it plays a crucial role in decarbonizing the transportation system.…”