Filiera ossido di etilene + glicole etilenico

flowchart LR catalyticEpoxidation["epossidazione catalitica"] eoSeparation["separazione OE"] eoHydration["idratazione OE"] egDistillation["distillazione EG"] s_ethylene(["C2H4"]):::role_rawMaterial s_ethylene --> catalyticEpoxidation s_oxygen(["oxygen"]):::role_utility s_oxygen --> catalyticEpoxidation s_silverCatalyst(["catalizzatore argento"]):::role_catalyst s_silverCatalyst -.-> catalyticEpoxidation s_ethyleneOxideCrude(["OE grezzo (stream post-reattore)"]):::role_intermediate catalyticEpoxidation --> s_ethyleneOxideCrude s_carbonDioxide(["carbon dioxide"]):::role_byproduct catalyticEpoxidation -.-> s_carbonDioxide s_ethyleneOxide(["EO"]):::role_byproduct catalyticEpoxidation -.-> s_ethyleneOxide s_ethyleneOxideCrude --> eoSeparation s_water(["acqua"]):::role_utility s_water --> eoSeparation eoSeparation --> s_ethyleneOxide s_ethyleneOxide --> eoHydration s_water --> eoHydration s_ethyleneGlycolCrude(["EG grezzo (con DEG/TEG)"]):::role_intermediate eoHydration --> s_ethyleneGlycolCrude s_deg(["di-glicole etilenico"]):::role_byproduct eoHydration -.-> s_deg s_teg(["tri-glicole etilenico"]):::role_byproduct eoHydration -.-> s_teg s_ethyleneGlycolCrude --> egDistillation s_ethyleneGlycol(["EG"]):::role_finalProduct egDistillation --> s_ethyleneGlycol egDistillation -.-> s_deg egDistillation -.-> s_teg 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:eoEGPipeline .
} ORDER BY ?role