Haber–Bosch Process Flowsheets & Simulations
Explore 3 validated, solved Haber–Bosch simulation flowsheets in MaximaLabs — real components: n2, h2, ammonia, argon. Open any one directly in your browser.
Solved via: PENG-ROBINSON.
Green ammonia synthesis
An equilibrium reactor runs N₂ + 3H₂ ⇌ 2NH₃ on green-hydrogen syngas (Keq illustrative) — the new-energy leapfrog workflow.
3 unit ops • PENG-ROBINSON
17 0
View & openAmmonia synthesis loop (Haber-Bosch, ChemSep casebook)
The classic industrial ammonia loop: fresh syngas joins recycled unconverted gas, reacts over an equilibrium reactor (N₂ + 3H₂ ⇌ 2NH₃) at synthesis conditions, is chilled to condense high-purity liquid ammonia, and the remaining vapor splits into a recycle (back to the loop) and a purge — the purge exists specifically to bleed off the inert argon a single-pass reactor could never consume, which would otherwise concentrate in the recycle forever.
9 unit ops • PENG-ROBINSON
17 0
View & openHigh-recycle ammonia loop (equation-oriented)
A tight, high-recycle ammonia synthesis loop built to show why a modern simulator solves recycles the way legacy sequential-modular tools can't. Fresh syngas (N2 + 3H2, with argon inert) mixes with a large recycle, reacts to only ~10% per pass, chills so ammonia condenses out as product, and the unreacted gas recycles — a recycle-to-fresh ratio of ~5:1, with argon building up until a small purge balances it. Run this in Equation-Oriented mode (Solver menu > Mode > Equation-oriented). In the default sequential-modular mode the solver tears the recycle and iterates Wegstein ~78 times to close the loop; the equation-oriented solver instead makes every inter-unit stream a global unknown and closes all ~35 of them in one simultaneous Newton solve — the same simultaneous approach AVEVA SimCentral / gPROMS / IDAES use, and the reason tightly coupled recycles that crawl (or stall) in sequential-modular converge cleanly here. Honesty note: the ammonia-formation Keq is illustrative (chosen for a realistic ~10% per-pass conversion and ~5:1 recycle), not a fitted plant value; both solver modes reach the same converged answer — the point is the path, not the result.
8 unit ops • PENG-ROBINSON
20 0
View & open