Dehydrogenation Process Flowsheets & Simulations
Explore 6 validated, solved Dehydrogenation simulation flowsheets in MaximaLabs — real components: propane, propylene, h2, 2_butanol, methyl_ethyl_ketone, isopropanol. Open any one directly in your browser.
Solved via: PENG-ROBINSON.
Propane dehydrogenation cold box
Propane dehydrogenation (PDH) to propylene over a Pt/Cr catalyst, followed by a cold-box separation recovering liquid propylene from the H2-rich reactor off-gas, after US Patent 6,333,445 (Chart Inc., 2002). The refrigeration loop itself is not modeled — the cold box is represented here as a net cooling duty to condense the propylene, a bounded simplification. Unreacted propane recycle is not modeled either (reported as its own product stream).
6 unit ops • PENG-ROBINSON
17 0
View & openMethyl ethyl ketone from 2-butanol dehydrogenation
Catalytic dehydrogenation of 2-butanol to methyl ethyl ketone (MEK) over an In/MgO catalyst, per DE2831465A1 (1978), followed by a flash to remove the H2 co-product and a distillation splitting MEK from unreacted 2-butanol.
8 unit ops • PENG-ROBINSON
17 0
View & openAcetone from isopropanol dehydrogenation
Endothermic gas-phase dehydrogenation of isopropanol (IPA) to acetone, after Luyben (Ind. Eng. Chem. Res. 2011, 50, 1206). The H2-rich reactor off-gas is scrubbed with water to recover the acetone before venting, then a column splits acetone from the water/unreacted-IPA absorbent.
8 unit ops • PENG-ROBINSON
16 0
View & openStyrene monomer via ethylbenzene dehydrogenation
Ethylbenzene dehydrogenates over an equilibrium/conversion reactor to styrene monomer plus hydrogen — the endothermic reaction that supplies the world's polystyrene/SBR-rubber feedstock. A downstream column recovers unreacted ethylbenzene overhead for recycle while polymer-grade styrene leaves the bottoms. Vasudevan design, Ind. Eng. Chem. Res. 2009, 48, 10941 (Figure 15.1).
7 unit ops • PENG-ROBINSON
17 0
View & openIntegrated styrene chain: benzene to styrene monomer
The full two-step styrene chain connected as one flowsheet rather than two standalone process snippets: benzene alkylated with ethylene to ethylbenzene, purified in a recovery column, then fed directly to the dehydrogenation reactor that makes styrene monomer. The unreacted ethylbenzene the dehydrogenation column recovers is reported as its own product stream rather than recycled back onto the alkylation feed (an honest simplification — closing that loop needs a torn-recycle edge back into ALKCOL, which the plant does but this flowsheet does not).
12 unit ops • PENG-ROBINSON
17 0
View & openLOHC hydrogen release (methylcyclohexane dehydrogenation)
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.
8 unit ops • PENG-ROBINSON
18 0
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