{
  "authors": [],
  "basis": {
    "capacity": "314 t/a dried CBr4: 696.1 batches/a of 450.91 kg in 7920 h on a dedicated train (39.63 kg/h year average), ASSUMED (DESIGN.md D-002, D-003, D-013)",
    "location": "generic fine-chemicals site with a bromine supply (not chosen)",
    "operating_hours_per_year": 7920
  },
  "benchmarks": [
    {
      "dataset": "carbon-tetrabromide-by-semi-batch-haloform-bromination-of-acetone-in-aqueous-hypobromite-314-t-a",
      "expression": "feed:BR2 / product:CBR4P",
      "family": "chlorinated-organics",
      "kpi": "cbr4-specific-bromine",
      "no_open_reference": "No open source with a plant's or a pilot's bromine use per kg CBr4 found (searched 2026-11-05: Google Patents CN 101 885 665 A read, charges only and no yield; Wikipedia, Carbon tetrabromide, which names the CCl4 + AlBr3 exchange and methane bromination without figures; web search for CBr4 production yields, which gave only market-report pages). Only the stoichiometric floor, 1.928 kg/kg, is known.",
      "problem": "1 to kg/kg needs core's foundation.units (pip install 'cheme-as-code[units]')",
      "reference": null,
      "status": "unchecked",
      "title": "Bromine consumption per kg of carbon tetrabromide",
      "unit": "kg/kg",
      "value": null
    },
    {
      "dataset": "carbon-tetrabromide-by-semi-batch-haloform-bromination-of-acetone-in-aqueous-hypobromite-314-t-a",
      "expression": "product:WW / product:CBR4P",
      "family": "chlorinated-organics",
      "kpi": "cbr4-specific-wastewater",
      "no_open_reference": "No open source with the effluent of CBr4 production found (searched 2026-11-05 as for cbr4-specific-bromine); CN 101 885 665 A separates the solid from the liquor but states no liquor amount or washing.",
      "problem": "1 to kg/kg needs core's foundation.units (pip install 'cheme-as-code[units]')",
      "reference": null,
      "status": "unchecked",
      "title": "Wastewater (mother liquor, wash and condensate) per kg of carbon tetrabromide",
      "unit": "kg/kg",
      "value": null
    }
  ],
  "chemistry": {
    "inputs": [
      {
        "chemical": "bromine",
        "grade": null,
        "inventory_key": "feed:BR2",
        "note": "Dry liquid bromine (bromine-1), 1.951 kg/kg CBr4; half of it leaves as NaBr",
        "role": "feedstock"
      },
      {
        "chemical": "sodium-hydroxide",
        "grade": null,
        "inventory_key": "feed:NAOH",
        "note": "Caustic soda 50 wt% (chlor-alkali-1), 2.148 kg/kg CBr4, counted by mass of the solution",
        "role": "feedstock"
      },
      {
        "chemical": "acetone",
        "grade": null,
        "inventory_key": "feed:ACET",
        "note": "Acetone (acetone-1), 0.186 kg/kg CBr4, 5 % above the stoichiometric need",
        "role": "feedstock"
      },
      {
        "chemical": "tetrabutylammonium-bromide",
        "grade": null,
        "inventory_key": "feed:TBAB",
        "note": "Phase-transfer catalyst, 9.8 g/kg CBr4, not recovered",
        "role": "feedstock"
      },
      {
        "chemical": "water",
        "grade": null,
        "inventory_key": "feed:PW",
        "note": "Dilution water, 3.80 kg/kg CBr4",
        "role": "feedstock"
      },
      {
        "chemical": "water",
        "grade": null,
        "inventory_key": "feed:WASHW",
        "note": "Cake wash water, 1.95 kg/kg CBr4",
        "role": "feedstock"
      },
      {
        "chemical": "nitrogen",
        "grade": null,
        "inventory_key": "consumable:nitrogen",
        "note": "Nitrogen (asu-1) for inerting R-101 and pressing the filtrations, 37.5 kg per batch, 0.083 kg/kg CBr4 (ASSUMED)",
        "role": "feedstock"
      }
    ],
    "outputs": [
      {
        "chemical": "carbon-tetrabromide",
        "grade": null,
        "inventory_key": "product:CBR4P",
        "note": "Dried CBr4 crystals, 99.6 wt% CBr4, to packing",
        "role": "main-product"
      },
      {
        "chemical": "wastewater",
        "grade": null,
        "inventory_key": "product:WW",
        "note": "Mother liquor, wash filtrate and dryer condensate, 9.05 kg/kg CBr4: 13.9 wt% NaBr, 5.1 wt% NaOH, 2.7 wt% sodium acetate, traces of bromate, acetone and catalyst, to treatment",
        "role": "waste"
      }
    ],
    "utilities": [
      {
        "chemical": "electricity",
        "grade": null,
        "inventory_key": "feed:POWER",
        "note": "0.230 kWh/kg CBr4: agitators of M-101, R-101 and the filter-dryers, vacuum pump (ASSUMED)",
        "role": "utility"
      },
      {
        "chemical": "steam",
        "grade": null,
        "inventory_key": "feed:LPS",
        "note": "0.161 kWh (0.58 MJ)/kg CBr4 of LP steam to the filter-dryers' hot-water circuit (cheme's dryer model, the vessel's heat each batch included)",
        "role": "utility"
      },
      {
        "chemical": "chilled-water",
        "grade": null,
        "inventory_key": "product:BRINE",
        "note": "0.790 kWh/kg CBr4 removed by brine at 258 K: the caustic's dilution and cooling, the heats of hypobromite formation and of the haloform reaction (the registry has chilled water, not brine: closest entry)",
        "role": "utility"
      },
      {
        "chemical": "cooling-water",
        "grade": null,
        "inventory_key": "product:CW",
        "note": "0.098 kWh/kg CBr4 removed by cooling water in the filter-dryers' vacuum condenser: the latent heat of the dryer vapour",
        "role": "utility"
      }
    ]
  },
  "description": "Caustic soda (2.2 mol NaOH per mol of bromine) is diluted with water (2.5 kg per kg of\nbromine in all), the phase-transfer catalyst tetrabutylammonium bromide added (5 g per kg of\nbromine) and the charge cooled to 278 K. Liquid bromine is dosed into it over 1.7 h and reacts\nto sodium hypobromite and bromide. The cold hypobromite goes to the haloform reactor, where\nacetone (5 % above 1 mol per 4 mol of bromine) is dosed over 4.5 h at 278 K and stirred for\nanother 4.1 h: the hypobromite brominates and cleaves it to carbon tetrabromide and sodium\nacetate, C3H6O + 4 NaOBr -> CBr4 + CH3COONa + 3 NaOH, the aqueous route of CN 101 885 665 A.\nCBr4 is nearly insoluble in the cold liquor and precipitates. The slurry is filtered, the\ncake reslurried in about 2 kg of water per kg and filtered again, and dried at 308 K under\nvacuum in agitated filter-dryers (two units, taking the batches in turn), their jackets on hot\nwater of 318 K at most, below CBr4's polymorph transition at 320 K; a vacuum condenser on\ncooling water takes the vapour. The product is 99.6 wt% CBr4 with 0.3 wt% dried salts and\n0.1 wt% water; the yield is 98.4 % of the CBr4 the bromine can make and 93.7 % on acetone. The mother liquor (14 wt% NaBr, 5 wt% NaOH, 3 wt%\nsodium acetate, traces of bromate) and the wash go to wastewater treatment: the bromide is not\nrecovered.\n\nThe batch is modelled with cheme-as-code's semi-batch reactor (reactor: semibatch, core ADR\n0050) for both dosed steps and its batch recipe (process/recipe.yaml, core ADRs 0051 and\n0052): the dosing and post-reaction times come from the models, the haloform reactor is the\nbottleneck (cycle 11.38 h, 696 batches a year), the recipe sizes the three 4 m3 vessels and\nchecks the two reactors' jackets at the mean temperature of the 258/263 K brine (the 4.5 h\nacetone dosing and the 1.7 h bromine dosing are what the jackets remove), and\nthe flowsheet's flows are the recipe's year averages. The precipitation and the reslurry wash\nare cheme's crystallizer with the liquor's salts as spectators; the filter-dryer is one vessel\nover filtration, wash, refiltration and drying, its times and steam from cheme's filter and\ndryer models (core ADRs 0056, 0057). No gas forms, so no vent stream. The kinetics are ASSUMED\n(no open data); the heats are Hess's-law estimates (-41 kJ per mol of bromine, -521 kJ per mol\nof acetone). The acetone accumulates to 12.1 % at most and the cooling-failure temperature\nstays at 284.8 K against the 329.3 K boiling point of acetone, while the whole batch's\nadiabatic rise is 68 K; with a 100 times slower reaction the cooling-failure temperature would\npass that boiling point. See DESIGN.md for every assumption.\n",
  "design_basis": {
    "assumptions": [
      "Route from CN 101 885 665 A: bromine into cold caustic soda to hypobromite, then acetone into the hypobromite at 0-5 C with tetrabutylammonium bromide, CBr4 precipitating (D-001); the patent gives no yield, dosing time or product data.",
      "ASSUMED NaOH 2.2 per Br2, acetone 1.05 per 4 Br2, water 2.5 kg per kg Br2 in the charge, catalyst 5 g per kg Br2 (D-004).",
      "ASSUMED rate laws of the hypobromite formation, the haloform reaction (lumped) and the hypobromite's disproportionation; heats of reaction from tabulated formation enthalpies (D-005): the low accumulation rests on them.",
      "Solubility of CBr4 0.24 g per kg water, the 30 C value (Wikipedia), taken at 278 and 291 K and in the mother liquor without a salting-out correction (ASSUMED, D-007).",
      "ASSUMED filters: 99.8 % solid recovery, 0.15 kg liquor per kg cake solid, specific cake resistance 1e10 m/kg at 200 kPa; reslurry wash with about 2 kg water per kg solid (D-007).",
      "ASSUMED vacuum drying at 308 K (below the 320 K polymorph transition) to 0.1 wt% volatiles, 70 % thermal efficiency, the jacket's hot water at 318 K at most, a mean drying rate of 1.64 kg/(m2 h) (U 110 W/(m2 K) at the 10 K approach); two filter-dryers (D-008).",
      "All flows are year averages of the recipe (D-003); the reactor duties from cheme's semi-batch models, the dryer's from cheme's dryer model, the dilution heat and power concept estimates (D-009); accuracy +/-30 % not demonstrated."
    ],
    "source": "process/design-basis.yaml"
  },
  "engineering": {
    "description": "Carbon tetrabromide by semi-batch haloform bromination of acetone in aqueous hypobromite, a batch plant, concept stage (issue ChemE-as-Code/process-library#152)",
    "name": "Carbon tetrabromide",
    "requires": "cheme-as-code>=1.8",
    "stage": "concept",
    "stages": [
      {
        "id": "concept",
        "title": "Concept and feasibility"
      },
      {
        "id": "basic",
        "title": "Basic engineering"
      },
      {
        "id": "detail",
        "title": "Detail engineering"
      }
    ],
    "tool": "plantcode"
  },
  "facets": {
    "feedstock_basis": [
      "mineral",
      "fossil",
      "electricity"
    ],
    "product_classes": [
      "chemicals"
    ],
    "region": "generic",
    "unit_operations": [
      "reaction",
      "crystallization",
      "filtration",
      "drying"
    ]
  },
  "families": [
    "chlorinated-organics"
  ],
  "gap_count": 4,
  "gates": null,
  "id": "carbon-tetrabromide-1",
  "issues": {
    "closed_count": 0,
    "list_url": "https://github.com/ChemE-as-Code/process-library/issues?q=is%3Aissue%20label%3A%22process%3Acarbon-tetrabromide-1%22",
    "new": {
      "action": "https://github.com/ChemE-as-Code/process-library/issues/new?template=1-action-item.yml&labels=process%3Acarbon-tetrabromide-1&process=carbon-tetrabromide-1",
      "change": "https://github.com/ChemE-as-Code/process-library/issues/new?template=4-design-change.yml&labels=process%3Acarbon-tetrabromide-1&process=carbon-tetrabromide-1",
      "hold": "https://github.com/ChemE-as-Code/process-library/issues/new?template=2-engineering-hold.yml&labels=process%3Acarbon-tetrabromide-1&process=carbon-tetrabromide-1",
      "process": "https://github.com/ChemE-as-Code/process-library/issues/new?template=6-process-development.yml&labels=process%3Acarbon-tetrabromide-1&process=carbon-tetrabromide-1",
      "tq": "https://github.com/ChemE-as-Code/process-library/issues/new?template=3-technical-query.yml&labels=process%3Acarbon-tetrabromide-1&process=carbon-tetrabromide-1",
      "tracker": "https://github.com/ChemE-as-Code/process-library/issues/new?template=7-process-tracker.yml&labels=process%3Acarbon-tetrabromide-1&process=carbon-tetrabromide-1"
    },
    "open": [],
    "open_by_gate": {},
    "open_count": 0,
    "private": false,
    "repository": "ChemE-as-Code/process-library"
  },
  "keywords": [
    "carbon tetrabromide",
    "tetrabromomethane",
    "CBr4",
    "haloform reaction",
    "sodium hypobromite",
    "acetone",
    "bromine",
    "semi-batch",
    "batch",
    "dosing",
    "precipitation",
    "filter-dryer",
    "sodium bromide",
    "phase-transfer catalyst",
    "fine chemicals",
    "thermal screening"
  ],
  "lca": {
    "allocation": null,
    "backend": "factors",
    "boundary": "cradle-to-gate",
    "categories": [
      {
        "id": "climate-change",
        "method": "GWP100",
        "title": "Climate change",
        "unit": "kg CO2-eq"
      }
    ],
    "contributions": [],
    "data_sources": [],
    "factors_status": "none",
    "functional_unit": {
      "amount": 1,
      "chemical": "carbon-tetrabromide",
      "grade": null,
      "label": "1 kg carbon tetrabromide",
      "product": "CBR4P",
      "product_name": "Carbon tetrabromide",
      "product_title": "Carbon tetrabromide crystals to packing",
      "unit": "kg"
    },
    "goal": "Preliminary gate-to-gate life cycle inventory of carbon tetrabromide made by the semi-batch haloform bromination of acetone in aqueous sodium hypobromite at the concept stage: which raw materials, utilities and wastes the batch plant exchanges per kg of dried CBr4, as the foreground for a later cradle-to-gate study. No impact results: most backgrounds are not mapped yet (D-012).",
    "inventory": [
      {
        "direction": "input",
        "key": "feed:PW",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 3.80277,
        "title": "Process water (dilution)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:NAOH",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 2.14825,
        "title": "Caustic soda 50 wt% (chlor-alkali-1)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:TBAB",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.00975489,
        "title": "Tetrabutylammonium bromide (phase-transfer catalyst, merchant)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:BR2",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 1.95075,
        "title": "Liquid bromine (bromine-1)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:ACET",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.186105,
        "title": "Acetone (acetone-1)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:WASHW",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 1.95075,
        "title": "Process water (cake wash)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:POWER",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.229742,
        "title": "Electric power",
        "unit": "kWh"
      },
      {
        "direction": "input",
        "key": "feed:LPS",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.161387,
        "title": "LP steam 350 kPa(a) (to the dryer's hot-water circuit)",
        "unit": "kWh"
      },
      {
        "direction": "output",
        "key": "product:CBR4P",
        "kind": "material",
        "phase": "operation",
        "provenance": "calculated",
        "quantity": 1.0,
        "title": "Carbon tetrabromide crystals to packing",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:WW",
        "kind": "material",
        "phase": "operation",
        "provenance": "calculated",
        "quantity": 9.04841,
        "title": "Mother liquor, wash filtrate and dryer condensate to wastewater treatment",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:BRINE",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.790182,
        "title": "Chilled brine return (263 K)",
        "unit": "kWh"
      },
      {
        "direction": "output",
        "key": "product:CW",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.0984825,
        "title": "Cooling water return (the dryers' vacuum condenser)",
        "unit": "kWh"
      },
      {
        "direction": "input",
        "key": "consumable:rinse-water",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 2.21766,
        "title": "Rinse water of R-101 and F-101 between batches",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "disposal:consumable.rinse-water",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 2.21766,
        "title": "Disposal: Rinse water of R-101 and F-101 between batches (site wastewater treatment of the rinse water, with the saline bromide liquor (D-010))",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "consumable:nitrogen",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.0831623,
        "title": "Nitrogen for inerting R-101 and pressing the filtrations in F-101",
        "unit": "kg"
      }
    ],
    "no_total": {
      "baseline": {
        "climate-change": {
          "gaps": 14,
          "reason": "every-contribution-a-gap"
        }
      }
    },
    "not_computed": [
      "climate-change"
    ],
    "pcf": [],
    "publishable": true,
    "result": {
      "classification": "partial",
      "gaps": 14,
      "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"
    ],
    "totals": {
      "baseline": {}
    },
    "withheld_reason": null
  },
  "lci_gaps": [
    {
      "dataset": "carbon-tetrabromide-by-semi-batch-haloform-bromination-of-acetone-in-aqueous-hypobromite-314-t-a",
      "key": "feed:TBAB",
      "link": "technosphere",
      "type": "input"
    },
    {
      "dataset": "carbon-tetrabromide-by-semi-batch-haloform-bromination-of-acetone-in-aqueous-hypobromite-314-t-a",
      "key": "product:BRINE",
      "link": "technosphere",
      "type": "output"
    },
    {
      "dataset": "carbon-tetrabromide-by-semi-batch-haloform-bromination-of-acetone-in-aqueous-hypobromite-314-t-a",
      "key": "consumable:rinse-water",
      "link": "technosphere",
      "type": "input"
    },
    {
      "dataset": "carbon-tetrabromide-by-semi-batch-haloform-bromination-of-acetone-in-aqueous-hypobromite-314-t-a",
      "key": "disposal:consumable.rinse-water",
      "link": "technosphere",
      "type": "output"
    }
  ],
  "maintainers": [
    {
      "name": "Artur Schweidtmann"
    }
  ],
  "maturity": "concept",
  "preliminary": true,
  "provenance": {
    "library_commit": "a3c52e472f42fbc8cdacfeacf5ef28703c004174",
    "previews": {
      "sheets": [
        "BFD",
        "PFD"
      ],
      "source_commit": "a3c52e472f42fbc8cdacfeacf5ef28703c004174",
      "tool": "cheme 1.6.0 (pyDEXPI 2.1.0)"
    },
    "previews_stale": false,
    "source_commit": "a3c52e472f42fbc8cdacfeacf5ef28703c004174"
  },
  "publication": {
    "license": "CC-BY-4.0",
    "status": "public"
  },
  "references": [
    {
      "title": "CN 101 885 665 A: Method for preparing tetrabromomethane (claims 1-4 and embodiments 1-3: bromine into caustic at 0-5 C, tetrabutylammonium bromide, acetone dripped in at 0-5 C, 3-5 h of stirring, the solid separated and dried; charges, no yield)",
      "url": "https://patents.google.com/patent/CN101885665A/en"
    },
    {
      "title": "Wikipedia, Carbon tetrabromide (identity, density 3.42 g/mL, solubility 0.024 g/100 mL water at 30 C, polymorph transition at 46.9 C; the CCl4 + AlBr3 route)",
      "url": "https://en.wikipedia.org/wiki/Carbon_tetrabromide"
    },
    {
      "title": "NIST Chemistry WebBook, SRD 69: carbon tetrabromide, bromoform and acetone (condensed-phase enthalpies of formation and heat capacities; acetone's boiling point and heat of vaporization)",
      "url": "https://webbook.nist.gov/chemistry/"
    },
    {
      "title": "PubChem CID 11205, Carbon tetrabromide (identity)",
      "url": "https://pubchem.ncbi.nlm.nih.gov/compound/11205"
    },
    {
      "doi": "10.1002/9783527621606",
      "title": "Stoessel, F. (2008) Thermal Safety of Chemical Processes, Wiley-VCH (accumulation and MTSR of a semi-batch; method reference, not data)"
    }
  ],
  "repository": {
    "access": "public",
    "path": "processes/carbon-tetrabromide-1",
    "url": "https://github.com/ChemE-as-Code/process-library"
  },
  "representations": [
    {
      "bytes": 30122,
      "id": "BFD",
      "kind": "bfd",
      "preview": "artifacts/carbon-tetrabromide-1/BFD.svg",
      "source": "process/BFD.xml",
      "status": "preview",
      "title": "Block flow diagram"
    },
    {
      "bytes": 114309,
      "id": "PFD",
      "kind": "pfd",
      "preview": "artifacts/carbon-tetrabromide-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": "A batch plant: bromine is dosed into cold caustic to hypobromite, then acetone into the hypobromite; CBr4 precipitates, is filtered, washed and vacuum-dried, half of the bromine leaving as NaBr. Concept stage, 451 kg per batch every 11.4 h on a dedicated train, thermal screening of both dosed steps, preliminary gate-to-gate LCI.",
  "title": "Carbon tetrabromide by semi-batch haloform bromination of acetone in aqueous hypobromite (314 t/a)",
  "validation": {
    "notes": "Concept batch PFD with closed mass, component and element balances (cheme validate, cheme process streams: 3 blocks and 9 steps within tolerance). Every stream is calculated by cheme process propagate: the semi-batches M101 and R101 from their ASSUMED rate laws, the precipitation CR101 and the reslurry wash W101 as crystallizers with spectators from the solubility of CBr4 (the 30 C value in water, no salting-out correction, ASSUMED), the filters as specified splits, the dryer D101 to an ASSUMED residual moisture; the dryer's steam is cheme's (cheme process crystallizers), the reactors' duties cheme's heat release plus the doses' cooling; no balance script. The recipe takes the dosing and post-reaction times from the models and the filtration (Ruth) and drying times from the filter and dryer models with ASSUMED cake data and drying rate; the recipe's year-average rate of the product agrees with the flowsheet (cheme process recipe, no cheme.recipe-basis finding), and both reactors' jackets pass at the peak duty with the brine at its mean temperature (R-101 by 1.3 %). Thermal screening (cheme process reactor-hazards): M101 dT_ad 21.8 K, accumulation 0.38 %, MTSR 282.9 K against an MTT of 331.9 K (bromine); R101 dT_ad 68.2 K, accumulation 12.1 %, MTSR 284.8 K against an MTT of 329.3 K (acetone); no criticality class without a TD24 from calorimetry. The kinetics are assumed: at a tenth of the haloform rate the accumulation is 33 % and the MTSR 299 K, at a hundredth 78 % and 330.2 K, above the MTT (DESIGN.md D-011). Preliminary gate-to-gate LCI with the rinses and the nitrogen per batch (per-batch consumables); bromine, caustic soda, acetone and nitrogen linked to bromine-1, chlor-alkali-1, acetone-1 and asu-1, the other backgrounds gaps. cheme maturity reaches no level (assumed feeds, kinetics and separations); the claim `maturity: concept` is the lowest value of the schema, not an evidenced level. Not reviewed. Needs cheme-as-code 1.8.0 (crystallizer spectators, dryer and recipe units, core#165).",
    "status": "unreviewed"
  },
  "viewer": {
    "commit": "a3c52e472f42fbc8cdacfeacf5ef28703c004174",
    "dirty": false,
    "sheets": [
      "process/BFD.xml",
      "process/PFD.xml"
    ],
    "skipped": [],
    "snapshot": "snapshots/carbon-tetrabromide-1/",
    "stale": false,
    "tool": "cheme-as-code 1.6.0",
    "views": [
      "checks"
    ]
  }
}