LOHC hydrogen release (methylcyclohexane dehydrogenation) — a PENG-ROBINSON process flowsheet
A liquid organic hydrogen carrier (LOHC) power train: methylcyclohexane (MCH) is preheated and catalytically dehydrogenated (MCH → toluene + 3H2, endothermic, equilibrium-limited to ~90% single-pass conversion) to release hydrogen for downstream power generation. A flash drum separates the H₂-rich gas from the liquid; a distillation column then recovers the unreacted MCH overhead and recycles it to the reactor feed, closing a real tight liquid recycle loop, while spent toluene leaves the bottoms (to be re-hydrogenated back to MCH off-site, closing the supply-chain loop — out of scope for this dehydrogenation-side flowsheet). Screening-fidelity note: MCH and toluene are genuinely close-boiling (relative volatility ~1.4 under this thermo package at column conditions), so the recycle carries real toluene along with the recovered MCH rather than a sharp cut — a production column would use more stages to purify it further; this shows the recycle topology and its convergence, not an optimized column design.
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- Rigorous PENG-ROBINSON thermodynamics, solved by the same engine every simulation runs on.
- 5 unit operations modeled: MIX, Preheater, Dehydro Reactor, GAS LIQ SEP, Toluene Column.
- Focus areas: LOHC, Hydrogen carrier, Dehydrogenation, Recycle.
- Thermodynamics
- PENG-ROBINSON
- Components
- methylcyclohexane, toluene, h2
- Unit operations
- MIXPreheaterDehydro ReactorGAS LIQ SEPToluene Column
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Read the step-by-step guideReproduce this exact result from Python — the real client.get_example() → run_and_wait() path, not a mockup.
from flowsim.sdk import FlowSimClient
client = FlowSimClient()
example = client.get_example("lohc-mch-dehydrogenation")
sim = client.create_simulation(example["title"], example["flowsheet"])
result = client.run_and_wait(sim["id"])
print(result["status"]) # "converged"
streams = client.streams(sim["id"])Related models
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