Cryogenic air separation (N₂/O₂/Ar) — a PENG-ROBINSON process flowsheet
The real Linde double-column split: air is compressed, cooled toward cryogenic temperatures, and fed to a high-pressure column; its N₂-rich overhead and O₂-enriched bottoms are each let down through a JT valve into a low-pressure column as two separate feeds (the HP overhead entering near the top stands in for reflux from the shared condenser-reboiler a real double column uses — this solver's column MESH doesn't expose an external reboil-duty seam, so the two columns close their own reflux independently rather than literally sharing one condenser/reboiler; everything else — two pressure-cascaded columns, real multi-feed MESH, an actual argon side column — is real). A liquid side draw near the LP column's argon pinch feeds a crude argon column that rejects oxygen (the side draw's whole point — 'crude' because a real plant needs a further deoxo + purification train for pipeline-grade argon, out of scope here).
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- Rigorous PENG-ROBINSON thermodynamics, solved by the same engine every simulation runs on.
- 5 unit operations modeled: COMP, COOL, 2× Arcol, 2× JT2, Lpcol.
- Focus areas: Cryogenic ASU, Air separation, Liquid nitrogen, Liquid oxygen, Argon, Industrial gas.
- Thermodynamics
- PENG-ROBINSON
- Components
- n2, oxygen, argon
- Unit operations
- COMPCOOL2× Arcol2× JT2Lpcol
Opens in a new tab, loaded straight into the app — no setup.
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("cryogenic-air-separation")
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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