MTBE da isobutene + metanolo

flowchart LR isobuteneSeparation["separazione isobutene da raffinato C4"] mtbeEtherification["eterificazione isobutene + metanolo"] s_butenes(["butileni"]):::role_rawMaterial s_butenes --> isobuteneSeparation s_isobutene(["isobutene"]):::role_intermediate isobuteneSeparation --> s_isobutene s_isobutene --> mtbeEtherification s_methanol(["CH3OH"]):::role_rawMaterial s_methanol --> mtbeEtherification s_amberlystResin(["resina solfonica Amberlyst-15"]):::role_catalyst s_amberlystResin -.-> mtbeEtherification s_mtbe(["MTBE"]):::role_finalProduct mtbeEtherification --> s_mtbe 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:mtbePipeline .
} ORDER BY ?role