E-fuels Process Flowsheets & Simulations
Explore 3 validated, solved E-fuels simulation flowsheets in MaximaLabs — real components: co2, h2, methane, water, ethanol, ethylene. Open any one directly in your browser.
Solved via: PENG-ROBINSON.
CO₂ methanation (e-fuels / power-to-gas)
The Sabatier reaction (CO₂ + 4H₂ ⇌ CH₄ + 2H₂O) converts captured CO₂ and green H₂ into synthetic natural gas at a 97% single-pass-equivalent conversion (real plants stage several adiabatic beds with intercooling to reach this; lumped into one reactor here), then a cooler and knockout drum condense the reaction water from the SNG — the e-fuels loop that closes the loop on captured carbon instead of just storing it.
6 unit ops • PENG-ROBINSON
17 0
View & openSustainable Aviation Fuel via Alcohol-to-Jet
Bio-ethanol is catalytically dehydrated to ethylene, oligomerized toward a decene-range olefin, then hydrogenated to n-decane — a real synthetic paraffin in the SAF/jet-range carbon-number band. Honesty note: all three reaction steps are stoichiometric conversion models (this solver has no ethanol-dehydration, oligomerization, or hydrogenation kinetics specific to these catalysts), and the oligomerization step is lumped to a single representative product (1-decene, 5 C2H4 -> C10H20) rather than the real broad C4-C16+ olefin distribution a real oligomerization catalyst produces. The final flash is a light-ends/product split, not a full multi-cut fractionation into light-ends/SAF/diesel bands (this build only makes one heavy product, so there's nothing yet to fractionate into separate SAF and diesel cuts).
11 unit ops • PENG-ROBINSON
19 1
View & opene-Fuels (Power-to-Liquids): rWGS + Fischer-Tropsch
The Power-to-Liquids / e-SAF pathway: captured CO2 and green hydrogen are converted to synthetic hydrocarbons. A reverse water-gas-shift reactor turns CO2+H2 into CO + H2O (solved to real chemical equilibrium), the water is knocked out, and the syngas feeds a Fischer-Tropsch reactor that builds a whole hydrocarbon slate via the Anderson-Schulz-Flory chain-growth law. The single knob that sets the product spectrum is the chain-growth probability alpha (here 0.90): a high alpha shifts the slate toward diesel/wax, a low alpha toward LPG/naphtha -- the reactor distributes the reacted carbon across n-paraffins C1..C8 (the tail lumped as C8 wax) with exact C/H/O atom balances, so it conserves atoms wherever the distribution is cut. Honesty notes (see flowsim/solver/unitops/fischer_tropsch.py): this is the standard yield/selectivity FT model (ASF + specified CO conversion), not a mechanistic kinetic or slurry/fixed-bed hydrodynamic model; olefin/oxygenate co-products aren't split out (paraffins + water only); the raw syncrude effluent is delivered as-is (a real plant recycles the H2-rich tail gas and fractionates the liquid -- shown here as the reactor product, not a finished fuel cut); and the rWGS Keq is the representative high-temperature equilibrium magnitude.
8 unit ops • PENG-ROBINSON
20 1
View & open