{
  "authors": [],
  "basis": {
    "capacity": "8 t/h anhydrous methylamines (2.0 MMA + 4.4 DMA + 1.6 TMA), ASSUMED",
    "operating_hours_per_year": 8000
  },
  "benchmarks": [],
  "chemistry": {
    "inputs": [
      {
        "chemical": "methanol",
        "grade": null,
        "note": "feed:MEOH: methanol (e.g. methanol-1), 2.48 kg/kg DMA (unallocated; MMA and TMA are co-products)",
        "role": "feedstock"
      },
      {
        "chemical": "ammonia",
        "grade": null,
        "note": "feed:NH3F: liquid ammonia (e.g. ammonia-1), 0.732 kg/kg DMA (unallocated)",
        "role": "feedstock"
      }
    ],
    "outputs": [
      {
        "chemical": "dimethylamine",
        "grade": null,
        "inventory_key": "product:DMAP",
        "note": "Anhydrous dimethylamine to storage, 4.4 t/h",
        "role": "main-product"
      },
      {
        "chemical": "methylamine",
        "grade": null,
        "inventory_key": "product:MMAP",
        "note": "Anhydrous monomethylamine to storage, 2.0 t/h",
        "role": "co-product"
      },
      {
        "chemical": "trimethylamine",
        "grade": null,
        "inventory_key": "product:TMAP",
        "note": "Anhydrous trimethylamine to storage, 1.6 t/h",
        "role": "co-product"
      },
      {
        "chemical": "wastewater",
        "grade": null,
        "inventory_key": "product:WW",
        "note": "Reaction water to biological treatment, 100 ppm(wt) methanol (ASSUMED)",
        "role": "waste"
      }
    ],
    "utilities": [
      {
        "chemical": "steam",
        "grade": null,
        "inventory_key": "feed:MPS",
        "note": "MP steam 1500 kPa(a): feed vaporiser, C-101 and C-103 reboilers",
        "role": "utility"
      },
      {
        "chemical": "steam",
        "grade": null,
        "inventory_key": "feed:LPS",
        "note": "LP steam 450 kPa(a): C-102, C-104, C-105 reboilers",
        "role": "utility"
      },
      {
        "chemical": "electricity",
        "grade": null,
        "inventory_key": "feed:POWER",
        "note": "Feed and recycle pumps (ASSUMED electric drives)",
        "role": "utility"
      },
      {
        "chemical": "cooling-water",
        "grade": null,
        "inventory_key": "product:CW",
        "note": "25/35 C (ASSUMED)",
        "role": "utility"
      }
    ]
  },
  "description": "Concept design covering issues #171 (methylamine) and #166 (dimethylamine) as one\nco-production plant. Methanol (methanol-1) and ammonia (ammonia-1) are boundary feeds. The\nconverter is modelled as an ideal-gas chemical equilibrium (no kinetics); separations are\nsharp splits; duties are concept estimates. Preliminary gate-to-gate LCI with unmapped\nbackground datasets. See DESIGN.md.\n",
  "design_basis": {
    "assumptions": [
      "Converter: adiabatic fixed bed of amorphous silica-alumina, inlet 625 K / 2200 kPa(a), outlet 713 K / 2000 kPa(a); window 350-450 C and 150-350 psig from US 3,387,032 A and US 4,283,254 A (D-004).",
      "Converter outlet at the ideal-gas equilibrium of the three methylations at the outlet temperature, ATcT/CRC/Poling data; a model basis, not kinetics (D-005). Checked against the published equilibrium at 400 C, N/C 2.0 (US 4,485,261 A): TMA under-predicted (0.37 vs 0.43 among the amines on a weight basis, D-005). The source does not state the basis of its equilibrium ratios; weight is ASSUMED from its weight-basis prior-art ratios (on a mole basis the miss would be about 16 points, D-005).",
      "Converter feed N/C ratio 2.0 (mol N / mol methyl carbon), ASSUMED inside the ranges of US 7,435,855 B2 and US 4,485,261 A (D-004).",
      "All ammonia and the TMA recycle return as the ammonia column distillate; MMA beyond the product rate and unconverted methanol are recycled (D-007).",
      "Columns are sharp splits; reflux ratios, pressures, extraction water ratio 1 kg/kg and a minimum boil-up of 0.1 kmol/kmol bottoms are ASSUMED (D-008).",
      "No by-products (dimethyl ether, higher amines, CO/H2 from decomposition, coke), no inert purge and no caustic dosing modelled (D-005, D-008).",
      "Duties are concept estimates (ideal gas + heats of vaporisation, no mixing enthalpy), +/-30 % at best; no heat integration beyond the feed/effluent exchanger (D-006, D-009)."
    ],
    "source": "process/design-basis.yaml"
  },
  "engineering": {
    "description": "Methylamines (MMA, DMA, TMA) from methanol and ammonia over amorphous silica-alumina, with recycle of ammonia, TMA and MMA; concept design basis, balanced BFD/PFD and preliminary gate-to-gate LCI (issues #171 and #166).",
    "name": "Methylamines (MMA, DMA, TMA)",
    "requires": "cheme-as-code>=0.8",
    "stage": "concept",
    "stages": [
      {
        "id": "concept",
        "title": "Concept and feasibility"
      },
      {
        "id": "basic",
        "title": "Basic engineering"
      },
      {
        "id": "detail",
        "title": "Detail engineering"
      }
    ],
    "tool": "plantcode"
  },
  "facets": {
    "feedstock_basis": [
      "fossil"
    ],
    "product_classes": [
      "chemicals"
    ],
    "region": "generic",
    "unit_operations": [
      "reaction",
      "distillation",
      "extractive-distillation"
    ]
  },
  "families": [
    "nitrogen-organics"
  ],
  "gap_count": 1,
  "gates": null,
  "id": "methylamines-1",
  "issues": {
    "closed_count": 0,
    "list_url": "https://github.com/ChemE-as-Code/process-library/issues?q=is%3Aissue%20label%3A%22process%3Amethylamines-1%22",
    "new": {
      "action": "https://github.com/ChemE-as-Code/process-library/issues/new?template=1-action-item.yml&labels=process%3Amethylamines-1&process=methylamines-1",
      "change": "https://github.com/ChemE-as-Code/process-library/issues/new?template=4-design-change.yml&labels=process%3Amethylamines-1&process=methylamines-1",
      "hold": "https://github.com/ChemE-as-Code/process-library/issues/new?template=2-engineering-hold.yml&labels=process%3Amethylamines-1&process=methylamines-1",
      "process": "https://github.com/ChemE-as-Code/process-library/issues/new?template=6-process-development.yml&labels=process%3Amethylamines-1&process=methylamines-1",
      "tq": "https://github.com/ChemE-as-Code/process-library/issues/new?template=3-technical-query.yml&labels=process%3Amethylamines-1&process=methylamines-1",
      "tracker": "https://github.com/ChemE-as-Code/process-library/issues/new?template=7-process-tracker.yml&labels=process%3Amethylamines-1&process=methylamines-1"
    },
    "open": [],
    "open_by_gate": {},
    "open_count": 0,
    "private": false,
    "repository": "ChemE-as-Code/process-library"
  },
  "keywords": [
    "methylamine",
    "monomethylamine",
    "dimethylamine",
    "trimethylamine",
    "methanol amination",
    "silica-alumina",
    "extractive distillation"
  ],
  "lca": {
    "allocation": "mass",
    "backend": "factors",
    "boundary": "cradle-to-gate",
    "categories": [
      {
        "id": "climate-change",
        "method": "GWP100",
        "title": "Climate change",
        "unit": "kg CO2-eq"
      }
    ],
    "data_sources": [],
    "factors_status": "none",
    "functional_unit": {
      "amount": 1,
      "chemical": "dimethylamine",
      "grade": null,
      "label": "1 kg dimethylamine",
      "product": "DMAP",
      "product_name": "Dimethylamine",
      "product_title": "Anhydrous dimethylamine to storage",
      "unit": "kg"
    },
    "goal": "Preliminary gate-to-gate life cycle inventory of anhydrous dimethylamine co-produced with monomethylamine and trimethylamine from methanol and ammonia (amorphous silica-alumina, equilibrium converter with recycle, five-column separation) at concept stage, per kg of DMA: raw materials, utilities by level, co-products and wastewater from the balanced flowsheet. The backgrounds are gaps to be linked later; no impact result is claimed (D-014).",
    "inventory": [
      {
        "direction": "input",
        "key": "feed:MEOH",
        "kind": "material",
        "phase": "operation",
        "provenance": "given",
        "quantity": 1.36504,
        "title": "Methanol (boundary feed; made by methanol-1)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:NH3F",
        "kind": "material",
        "phase": "operation",
        "provenance": "given",
        "quantity": 0.402488,
        "title": "Liquid ammonia (boundary feed; made by ammonia-1)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:POWER",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.00325,
        "title": "Electric power",
        "unit": "kWh"
      },
      {
        "direction": "input",
        "key": "feed:MPS",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 3.47238,
        "title": "MP steam 1500 kPa(a)",
        "unit": "kWh"
      },
      {
        "direction": "input",
        "key": "feed:LPS",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 1.00475,
        "title": "LP steam 450 kPa(a)",
        "unit": "kWh"
      },
      {
        "direction": "output",
        "key": "product:MMAP",
        "kind": "material",
        "phase": "operation",
        "provenance": "calculated",
        "quantity": 0.454543,
        "title": "Anhydrous monomethylamine to storage",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:DMAP",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 1.0,
        "title": "Anhydrous dimethylamine to storage",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:TMAP",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.363636,
        "title": "Anhydrous trimethylamine to storage",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:WW",
        "kind": "material",
        "phase": "operation",
        "provenance": "calculated",
        "quantity": 0.767501,
        "title": "Process wastewater to biological treatment",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:CW",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 4.78176,
        "title": "Cooling water return",
        "unit": "kWh"
      }
    ],
    "not_computed": [],
    "publishable": false,
    "result": {
      "classification": "partial",
      "gaps": 7,
      "label": "partial screening carbon footprint",
      "publication": "public"
    },
    "sources": [
      "lca/README.md",
      "lca/dataset.yaml",
      "lca/factors.yaml",
      "lca/gaps.csv",
      "lca/inventory.csv",
      "lca/lca.yaml",
      "lca/mappings.yaml",
      "lca/results.csv",
      "lca/results.md"
    ],
    "values_withheld": "stale-run-manifest",
    "withheld_reason": "stale-run-manifest"
  },
  "lci_gaps": [
    {
      "dataset": "methylamines-from-methanol-and-ammonia-8-t-h-mma-dma-tma",
      "key": "feed:MEOH",
      "link": "technosphere",
      "type": "input"
    }
  ],
  "maintainers": [],
  "maturity": "concept",
  "preliminary": true,
  "provenance": {
    "library_commit": "c3ab3488c602bc797fdc98feffd4578375150dd0",
    "previews": {
      "sheets": [
        "BFD",
        "PFD"
      ],
      "source_commit": "c3ab3488c602bc797fdc98feffd4578375150dd0",
      "tool": "cheme 1.6.0 (pyDEXPI 2.1.0)"
    },
    "previews_stale": false,
    "source_commit": "c3ab3488c602bc797fdc98feffd4578375150dd0"
  },
  "publication": {
    "license": "CC-BY-4.0",
    "status": "public"
  },
  "references": [
    {
      "doi": "10.1016/S0920-5861(97)00003-5",
      "title": "Corbin, Schwarz, Sonnichsen (1997) Methylamines synthesis: a review. Catalysis Today 37, 71-102"
    },
    {
      "title": "US 4,485,261 A (1984) Process for producing methylamines (equilibrium at 400 C, N/C 2.0; separation trains)",
      "url": "https://patents.google.com/patent/US4485261A/en"
    },
    {
      "title": "US 4,283,254 A (1981) Methylamines purification by distillation and purge (silica-alumina 350-450 C, 200-350 psig)",
      "url": "https://patents.google.com/patent/US4283254A/en"
    },
    {
      "title": "US 3,387,032 A (1968) Process for the manufacture of methylamines (silica-alumina catalyst, 350-450 C, 150-300 psig)",
      "url": "https://patents.google.com/patent/US3387032A/en"
    },
    {
      "title": "US 7,435,855 B2 (2008) Process for the continuous synthesis of methylamines (conditions, conversion, coke regeneration)",
      "url": "https://patents.google.com/patent/US7435855"
    },
    {
      "title": "US 7,309,403 B2 (2007) Method for avoiding corrosion (ammonia column, TMA extractive distillation with water, MMA/DMA columns)",
      "url": "https://patents.justia.com/patent/7309403"
    },
    {
      "title": "US 2,206,584 A (1940) ammonia-trimethylamine constant-boiling mixture and its recycle",
      "url": "https://patents.google.com/patent/US2206584A/en"
    }
  ],
  "repository": {
    "access": "public",
    "path": "processes/methylamines-1",
    "url": "https://github.com/ChemE-as-Code/process-library"
  },
  "representations": [
    {
      "bytes": 37086,
      "id": "BFD",
      "kind": "bfd",
      "preview": "artifacts/methylamines-1/BFD.svg",
      "source": "process/BFD.xml",
      "status": "preview",
      "title": "Block flow diagram"
    },
    {
      "bytes": 137646,
      "id": "PFD",
      "kind": "pfd",
      "preview": "artifacts/methylamines-1/PFD.svg",
      "source": "process/PFD.xml",
      "status": "preview",
      "title": "Process flow diagram"
    },
    {
      "id": "process-model",
      "kind": "process-model",
      "source": "process/flowsheet.yaml",
      "status": "viewer",
      "title": "Flowsheet and stream table"
    },
    {
      "id": "simulation",
      "kind": "simulation",
      "source": "process/simulation.yaml",
      "status": "viewer",
      "title": "Process simulation"
    },
    {
      "id": "equipment-list",
      "kind": "equipment-list",
      "source": "equipment/equipment-list.yaml",
      "status": "viewer",
      "title": "Equipment list"
    },
    {
      "id": "lca",
      "kind": "lca",
      "source": "lca/lca.yaml",
      "status": "viewer",
      "title": "Life cycle assessment"
    }
  ],
  "summary": "Methanol and ammonia react over amorphous silica-alumina at 350-440 C to an equilibrium mix of mono-, di- and trimethylamine; ammonia, TMA, surplus MMA and methanol are recycled, and a five-column train (ammonia, TMA extractive distillation with water, dehydration, MMA/DMA, methanol recovery) gives 8 t/h of anhydrous amines (concept design, gate-to-gate LCI).",
  "title": "Methylamines (MMA, DMA, TMA) from methanol and ammonia",
  "validation": {
    "notes": "Main products and feeds are listed under chemistry with their chemicals registry entries (issue #251).",
    "status": "unreviewed"
  },
  "viewer": {
    "commit": "c3ab3488c602bc797fdc98feffd4578375150dd0",
    "dirty": false,
    "sheets": [
      "process/BFD.xml",
      "process/PFD.xml"
    ],
    "skipped": [],
    "snapshot": "snapshots/methylamines-1/",
    "stale": false,
    "tool": "cheme-as-code 1.6.0",
    "views": [
      "checks",
      "streams"
    ]
  }
}