Acetylene recovery from cracked gas (selective solvent absorption) — a PENG-ROBINSON process flowsheet
The other real use of cracked-gas acetylene: instead of being hydrogenated away as a trace impurity (see naphtha-steam-cracker's ACETYLENE_HYDRO step and patent-c3-selective-hydrogenation), acetylene is deliberately RECOVERED as product when present at high enough concentration — industrially via selective solvent absorption (DMF or NMP preferentially dissolve acetylene over the other light hydrocarbons), then stripped back out to release a pure acetylene stream.
Modeling assumptions & limitations
- 1No cited DMF/NMP-hydrocarbon binary VLE data exists in MaximaLabs to build a rigorous absorber/stripper, so this uses the same fixed-recovery separator shortcut MaximaLabs's existing amine/CO₂-capture examples already use for exactly this situation (e.g. blue-hydrogen-smr-ccs's CO₂ capture step) — a disclosed simplification of a real physical separation, not a claim of rigorous solvent thermodynamics.
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- Rigorous PENG-ROBINSON thermodynamics, solved by the same engine every simulation runs on.
- 1 unit operations modeled: 2× RICH Solvent Stripper.
- Focus areas: Acetylene, Solvent absorption, Cracked gas, Petrochemicals.
- Thermodynamics
- PENG-ROBINSON
- Components
- methane, ethylene, ethane, acetylene, h2
- Unit operations
- 2× RICH Solvent Stripper
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("acetylene-recovery-from-cracked-gas")
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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