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Electrolysis Process Flowsheets & Simulations

Explore 2 validated, solved Electrolysis simulation flowsheets in MaximaLabs — real components: water, h2, co2, methane. Open any one directly in your browser.

Solved via: NRTL, PENG-ROBINSON.

Water
PUMP
CELL
H2
Texas, USA

10 MW PEM electrolyzer loop

A pilot-scale green-H₂ plant: water is pressurized and split in a rigorous PEM cell (Butler-Volmer + Nernst), drawing ~10 MW at a realistic ~1.9 V cell voltage.

4 unit ops • NRTL

170 2

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Solar
WIND
fx
CALC Power
Water
Electrolyzer
CO2 FEED
MIX
Preheat
RX
COOL
SEP
SNG
Reaction Water
Illustrative — no specific site

Solar + wind green H₂ → CO₂ methanation

A solar PV array and a wind turbine each compute their own electrical output from a cited irradiance/power-curve model — not typed-in numbers — and a calculator block sums the two and writes it into a PEM electrolyzer's power draw, re-converging until the electrolyzer's hydrogen output is self-consistent with the array's own physics. That green H₂ is mixed with a CO₂-rich feed (representing the rich overhead of an amine-capture loop, e.g. basf-amdea-closed-solvent-loop or mixed-amine-acid-gas-treating — captured CO₂ standing in as a feed rather than re-solving the whole capture train here) and reacted to synthetic natural gas by the Sabatier reaction, same as co2-methanation. This is the full post-combustion-capture-plus-renewable-hydrogen loop: capture the carbon, split water with sun and wind, recombine them into pipeline-ready gas. CO₂ is deliberately fed in stoichiometric deficit so the electrolyzer's own H₂ output — not an assumed ratio — sets how much gas is made; the solar/wind design point (750 W/m² POA irradiance at 45°C cell temperature; a 9 m/s wind on a 100 m rotor) is a representative midday operating point, not a time series — this is a design-point simulation, not an 8760-hour production model.

13 unit ops • PENG-ROBINSON

2 1

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