Filiera ammoniaca Haber-Bosch + urea

flowchart LR steamReforming["steam reforming"] waterGasShift["water gas shift"] h2Purification["purificazione H2"] haberBosch["Haber-Bosch"] ureaSynthesis["sintesi urea"] prillingAndGranulation["prilling e granulazione"] s_methane(["CH4"]):::role_rawMaterial s_methane --> steamReforming s_steam(["vapore"]):::role_utility s_steam --> steamReforming s_niCatalyst(["catalizzatore Ni"]):::role_catalyst s_niCatalyst -.-> steamReforming s_synthesisGas(["syngas"]):::role_intermediate steamReforming --> s_synthesisGas s_carbonDioxide(["carbon dioxide"]):::role_byproduct steamReforming -.-> s_carbonDioxide s_carbonMonoxide(["monossido di carbonio"]):::role_byproduct steamReforming -.-> s_carbonMonoxide s_hydrogen(["idrogeno"]):::role_byproduct steamReforming -.-> s_hydrogen s_synthesisGas --> waterGasShift s_steam --> waterGasShift s_carbonMonoxide --> waterGasShift s_highTemperatureShiftCatalyst(["catalizzatore HTS"]):::role_catalyst s_highTemperatureShiftCatalyst -.-> waterGasShift waterGasShift --> s_hydrogen waterGasShift -.-> s_carbonDioxide s_hydrogen --> h2Purification s_purifiedHydrogen(["idrogeno purificato"]):::role_intermediate h2Purification --> s_purifiedHydrogen s_purifiedHydrogen --> haberBosch s_nitrogen(["azoto"]):::role_rawMaterial s_nitrogen --> haberBosch s_hydrogen --> haberBosch s_feHaberCatalyst(["catalizzatore Fe Haber-Bosch"]):::role_catalyst s_feHaberCatalyst -.-> haberBosch s_ammonia(["ammoniaca"]):::role_finalProduct haberBosch --> s_ammonia haberBosch -. recycle .-> s_purifiedHydrogen s_ammonia --> ureaSynthesis s_carbonDioxide --> ureaSynthesis s_ureaMelt(["urea fusa"]):::role_intermediate ureaSynthesis --> s_ureaMelt s_water(["acqua"]):::role_byproduct ureaSynthesis -.-> s_water s_ammoniumCarbamate(["carbammato di ammonio"]):::role_utility ureaSynthesis -. recycle .-> s_ammoniumCarbamate s_ureaMelt --> prillingAndGranulation s_urea(["urea"]):::role_finalProduct prillingAndGranulation --> s_urea 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:ammoniaHaberBoschUreaPipeline .
} ORDER BY ?role