Filiera etilene da steam cracking

flowchart LR crackingFurnace["forno di cracking"] transferLineExchangerQuench["TLE quench"] compressionAndCausticWash["compressione e caustic wash"] cryogenicSeparation["separazione criogenica"] demethanization["demetanizzazione"] deethanization["deetanizzazione"] depropanization["depropanizzazione"] cryogenicSeparation --> demethanization demethanization --> deethanization deethanization --> depropanization s_naphtha(["nafta"]):::role_rawMaterial s_naphtha --> crackingFurnace s_steam(["vapore"]):::role_utility s_steam --> crackingFurnace s_ethane(["C2H6"]):::role_rawMaterial s_ethane --> crackingFurnace s_fccLpg(["GPL FCC"]):::role_rawMaterial s_fccLpg --> crackingFurnace s_lpgRefinery(["GPL (gas leggeri raffineria)"]):::role_rawMaterial s_lpgRefinery --> crackingFurnace s_crackerPyrolysisGasCrude(["gas pirolisi cracker grezzo (~850°C)"]):::role_intermediate crackingFurnace --> s_crackerPyrolysisGasCrude s_btx(["BTX"]):::role_byproduct crackingFurnace -.-> s_btx s_pyrolysisOil(["olio di pirolisi"]):::role_byproduct crackingFurnace -.-> s_pyrolysisOil s_fuelGas(["fuel-gas"]):::role_byproduct crackingFurnace -.-> s_fuelGas s_hydrogen(["idrogeno"]):::role_byproduct crackingFurnace -.-> s_hydrogen s_crackerPyrolysisGasCrude --> transferLineExchangerQuench s_crackerPyrolysisGas(["gas di pirolisi cracker"]):::role_intermediate transferLineExchangerQuench --> s_crackerPyrolysisGas s_crackerPyrolysisGas --> compressionAndCausticWash s_sodiumHydroxide(["sodium hydroxide"]):::role_utility s_sodiumHydroxide --> compressionAndCausticWash s_carbonDioxide(["carbon dioxide"]):::role_rawMaterial s_carbonDioxide --> compressionAndCausticWash s_crackedGasCompressed(["gas cracker compresso"]):::role_intermediate compressionAndCausticWash --> s_crackedGasCompressed s_sodaAsh(["carbonato di sodio"]):::role_byproduct compressionAndCausticWash -.-> s_sodaAsh s_water(["acqua"]):::role_byproduct compressionAndCausticWash -.-> s_water s_spentCaustic(["soda esausta"]):::role_waste compressionAndCausticWash -.-> s_spentCaustic s_crackedGasCompressed --> cryogenicSeparation s_propylene(["C3H6"]):::role_byproduct cryogenicSeparation -.-> s_propylene s_butadiene(["butadiene"]):::role_byproduct cryogenicSeparation -.-> s_butadiene s_butenes(["butileni"]):::role_byproduct cryogenicSeparation -.-> s_butenes cryogenicSeparation -.-> s_hydrogen s_methane(["CH4"]):::role_byproduct cryogenicSeparation -.-> s_methane s_crackedGasCompressed --> demethanization demethanization --> s_methane s_crackedGasCompressed --> deethanization s_ethylene(["C2H4"]):::role_finalProduct deethanization --> s_ethylene s_crackedGasCompressed --> depropanization depropanization --> s_propylene depropanization -.-> s_butadiene depropanization -.-> s_butenes classDef role_rawMaterial fill:#e8f4ff,stroke:#06c,color:#003 classDef role_finalProduct fill:#e8ffe8,stroke:#0a7,color:#030 classDef role_intermediate fill:#f0f0f0,stroke:#666,color:#333 classDef role_byproduct fill:#fff4e0,stroke:#cc7a00,color:#642 classDef role_waste fill:#fae8e8,stroke:#888,stroke-dasharray:3 3,color:#444 classDef role_utility fill:#e0f7f7,stroke:#06c8c8,color:#033 classDef role_catalyst fill:#fde0f0,stroke:#cc3399,color:#506 classDef role_mine fill:#f5e6d3,stroke:#8b5a2b,color:#3d2e15,stroke-width:2px

PREFIX chem: <https://ontology.siletto.it/chem-pipeline#>
SELECT ?role ?substance WHERE {
  ?substance chem:playsRole ?ra .
  ?ra chem:role ?role ; chem:inPipeline chem:ethyleneSteamCrackingPipeline .
} ORDER BY ?role