{
  "authors": [],
  "basis": {
    "capacity": "50 kt/a H2O2 (100 %) as 50 wt% solution (ASSUMED)",
    "location": "generic (not chosen)",
    "operating_hours_per_year": 8000
  },
  "benchmarks": [],
  "chemistry": {
    "inputs": [
      {
        "chemical": "2-ethylanthraquinone",
        "grade": null,
        "note": "feed:MKQ: 2-Ethylanthraquinone make-up of the working solution",
        "role": "feedstock"
      },
      {
        "chemical": "aluminium-oxide",
        "grade": null,
        "note": "feed:ALU: activated alumina (reversion agent)",
        "role": "feedstock"
      },
      {
        "chemical": "hydrogen",
        "grade": null,
        "inventory_key": "feed:H2",
        "note": "Pure H2 at 500 kPa(a), 63.5 kg/t H2O2 (ASSUMED boundary feed; e.g. from processes/hydrogen-1)",
        "role": "feedstock"
      },
      {
        "chemical": "air",
        "grade": null,
        "inventory_key": "feed:AIR",
        "note": "Dry air for the oxidation, 30 % O2 excess (ASSUMED)",
        "role": "feedstock"
      },
      {
        "chemical": "water",
        "grade": null,
        "inventory_key": "feed:DEMIN",
        "note": "Demineralised water to the extraction, 1.19 t/t H2O2. The working-solution solvent make-up (feed:MKS, C9 aromatic and diisobutylcarbinol) has no registry entry yet",
        "role": "feedstock"
      }
    ],
    "outputs": [
      {
        "chemical": "hydrogen-peroxide",
        "grade": null,
        "inventory_key": "product:PROD",
        "note": "Hydrogen peroxide 50 wt% to storage, counted by mass of the solution",
        "role": "main-product"
      },
      {
        "chemical": "wastewater",
        "grade": null,
        "inventory_key": "product:WW",
        "note": "Dryer water, ejector and adsorber condensate with dissolved organics and H2O2, to biological treatment",
        "role": "waste"
      },
      {
        "chemical": "nitrogen",
        "grade": null,
        "inventory_key": "product:OFFGAS",
        "note": "Oxidiser off-gas after activated carbon: N2, O2, Ar, water and residual VOC to atmosphere",
        "role": "emission"
      }
    ],
    "utilities": [
      {
        "chemical": "electricity",
        "grade": null,
        "inventory_key": "feed:POWER",
        "note": "Air compressor, working-solution and auxiliary pumps, vacuum pump (ASSUMED electric drives)",
        "role": "utility"
      },
      {
        "chemical": "steam",
        "grade": null,
        "inventory_key": "feed:LPS",
        "note": "LP steam 350 kPa(a) to the concentrator reboiler",
        "role": "utility"
      },
      {
        "chemical": "steam",
        "grade": null,
        "inventory_key": "feed:STEAMD",
        "note": "LP steam used directly: adsorber regeneration and the WS dryer ejector",
        "role": "utility"
      },
      {
        "chemical": "cooling-water",
        "grade": null,
        "inventory_key": "product:CW",
        "note": "25/35 C (ASSUMED)",
        "role": "utility"
      }
    ]
  },
  "description": "A working solution of 2-ethylanthraquinone in a C9 aromatic / diisobutylcarbinol mixture is\nhydrogenated over a fixed-bed Pd catalyst (45 % of the quinone per pass), separated from the\nvent gas, filtered and oxidised with compressed air in bubble columns, which forms H2O2 and\nregenerates the quinone. The H2O2 is extracted with water to a 40 wt% crude, washed with\nsolvent and concentrated to 50 wt% in a vacuum column whose distillate returns as extraction\nwater. The raffinate working solution is dried, part-regenerated on activated alumina and\nreturned. The oxidiser off-gas passes a condenser and steam-regenerated activated carbon.\n\nAll values are concept estimates (scripts/hp_balance.py of the engineering files): the\nconversions, splits and duties are design choices set inside the ranges the EU LVOC BREF\n2017 (chapter 12) reports, not plant or licensor data; see DESIGN.md for every assumption\nand gated step.\n",
  "design_basis": {
    "assumptions": [
      "ASSUMED working solution: 2-ethylanthraquinone 14 wt% in 60:40 (mass) 1,2,4-trimethylbenzene : diisobutylcarbinol, 0.15 wt% water, 930 kg/m3; 'anthra' system, no tetrahydro derivatives modelled (D-004).",
      "ASSUMED hydrogenation: fixed-bed Pd, 333 K, 400 kPa(a), 45 % of the quinone hydrogenated per pass (BREF: < 60 %), residual H2O2 in the recycled WS destroyed on the catalyst, 1 % of the H2 feed vented (D-003, D-005).",
      "ASSUMED oxidation: air, 328 K, 350 kPa(a) (BREF 40-70 C, atmospheric-10 bar), complete oxidation of the hydroquinone (D-005, D-007).",
      "ASSUMED extraction: 97 % of the H2O2 to a 40 wt% crude (BREF 20-50 wt%), raffinate 0.30 wt% water; a specified split, not an equilibrium-stage calculation (D-008).",
      "ASSUMED concentration: vacuum column 10-12 kPa(a), reflux ratio 0.3, distillate 0.05 wt% H2O2 recycled to the extraction, no vapour recompression (D-010).",
      "ASSUMED off-gas treatment: condenser at 308 K, activated carbon to 20 mg C/Nm3 (inside the BREF Table 12.8 plant values), regeneration steam 5 kg/kg (BREF 4-6) (D-009).",
      "ASSUMED no H2O2 decomposition other than the hydrogenation of the residual H2O2 (D-005); stabilisers, nitric acid, caustic, Pd catalyst, activated carbon and ion-exchange resin are consumables outside the flowsheet (lca/lca.yaml, D-011).",
      "Heats of reaction: oxidation 77.5 kJ/mol (BREF 12.3.4 d); hydrogenation -110.3 kJ/mol derived by Hess's law (D-005).",
      "All flows and duties are concept estimates from scripts/hp_balance.py (D-006); accuracy not stated, roughly +/-30 %."
    ],
    "source": "process/design-basis.yaml"
  },
  "engineering": {
    "description": "",
    "name": "Hydrogen peroxide (anthraquinone process)",
    "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": [
      "atmospheric",
      "water"
    ],
    "product_classes": [
      "chemicals"
    ],
    "region": "generic",
    "unit_operations": [
      "reaction",
      "compression",
      "extraction",
      "distillation",
      "adsorption",
      "heat-exchange"
    ]
  },
  "families": [
    "inorganic-chemicals"
  ],
  "gap_count": 15,
  "gates": null,
  "id": "hydrogen-peroxide-1",
  "issues": {
    "closed_count": 0,
    "list_url": "https://github.com/ChemE-as-Code/process-library/issues?q=is%3Aissue%20label%3A%22process%3Ahydrogen-peroxide-1%22",
    "new": {
      "action": "https://github.com/ChemE-as-Code/process-library/issues/new?template=1-action-item.yml&labels=process%3Ahydrogen-peroxide-1&process=hydrogen-peroxide-1",
      "change": "https://github.com/ChemE-as-Code/process-library/issues/new?template=4-design-change.yml&labels=process%3Ahydrogen-peroxide-1&process=hydrogen-peroxide-1",
      "hold": "https://github.com/ChemE-as-Code/process-library/issues/new?template=2-engineering-hold.yml&labels=process%3Ahydrogen-peroxide-1&process=hydrogen-peroxide-1",
      "process": "https://github.com/ChemE-as-Code/process-library/issues/new?template=6-process-development.yml&labels=process%3Ahydrogen-peroxide-1&process=hydrogen-peroxide-1",
      "tq": "https://github.com/ChemE-as-Code/process-library/issues/new?template=3-technical-query.yml&labels=process%3Ahydrogen-peroxide-1&process=hydrogen-peroxide-1",
      "tracker": "https://github.com/ChemE-as-Code/process-library/issues/new?template=7-process-tracker.yml&labels=process%3Ahydrogen-peroxide-1&process=hydrogen-peroxide-1"
    },
    "open": [],
    "open_by_gate": {},
    "open_count": 0,
    "private": false,
    "repository": "ChemE-as-Code/process-library"
  },
  "keywords": [
    "hydrogen peroxide",
    "anthraquinone process",
    "autoxidation",
    "working solution",
    "2-ethylanthraquinone",
    "palladium",
    "hydrogenation",
    "oxidation",
    "liquid-liquid extraction",
    "vacuum distillation"
  ],
  "lca": {
    "allocation": null,
    "backend": "factors",
    "boundary": "gate-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": "hydrogen-peroxide",
      "grade": null,
      "label": "1 kg hydrogen peroxide",
      "product": "PROD",
      "product_name": "Hydrogen peroxide",
      "product_title": "Hydrogen peroxide 50 wt% to storage",
      "unit": "kg"
    },
    "goal": "Preliminary gate-to-gate life cycle inventory of 50 wt% hydrogen peroxide by the anthraquinone process at the concept stage, for the process library: the foreground exchanges per kg of product with their provenance, and the list of backgrounds still to link. Not an impact result: every background is a gap.",
    "inventory": [
      {
        "direction": "input",
        "key": "feed:H2",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.0317576,
        "title": "Hydrogen (boundary feed; e.g. from hydrogen-1)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:MKQ",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.0005,
        "title": "2-Ethylanthraquinone make-up",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:MKS",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.0012504,
        "title": "Working-solution solvent make-up",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:AIR",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 2.72282,
        "title": "Ambient air",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:DEMIN",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.595562,
        "title": "Demineralised water",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:ALU",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.003,
        "title": "Activated alumina (reversion agent)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:STEAMD",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.116686,
        "title": "LP steam, direct use (adsorber regeneration, ejector)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "feed:POWER",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.177344,
        "title": "Electric power",
        "unit": "kWh"
      },
      {
        "direction": "input",
        "key": "feed:LPS",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.237072,
        "title": "LP steam 350 kPa(a), indirect",
        "unit": "kWh"
      },
      {
        "direction": "output",
        "key": "product:PROD",
        "kind": "material",
        "phase": "operation",
        "provenance": "calculated",
        "quantity": 1.0,
        "title": "Hydrogen peroxide 50 wt% to storage",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:H2VENT",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.0003264,
        "title": "Hydrogenation vent to atmosphere",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:OFFGAS",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 2.26181,
        "title": "Oxidiser off-gas after adsorption to atmosphere",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:WW",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.204938,
        "title": "Aqueous effluent to biological waste water treatment",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:SPENT",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.0045,
        "title": "Spent reversion agent (alumina with organics)",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "product:CW",
        "kind": "energy",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 1.23262,
        "title": "Cooling water return",
        "unit": "kWh"
      },
      {
        "direction": "output",
        "key": "emission:AR",
        "kind": "emission",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.0350929,
        "title": "AR to the environment",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "emission:DIBC",
        "kind": "emission",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.0,
        "title": "DIBC to the environment",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "emission:H2",
        "kind": "emission",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.000317507,
        "title": "H2 to the environment",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "emission:H2O",
        "kind": "emission",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.0238699,
        "title": "H2O to the environment",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "emission:N2",
        "kind": "emission",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 2.05734,
        "title": "N2 to the environment",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "emission:O2",
        "kind": "emission",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.145476,
        "title": "O2 to the environment",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "emission:TMB",
        "kind": "emission",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 4.89274e-05,
        "title": "TMB to the environment",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "consumable:nitric-acid",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.002,
        "title": "Nitric acid (100 % basis; pH adjustment and passivation)",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "disposal:consumable.nitric-acid",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.002,
        "title": "Disposal: Nitric acid (100 % basis; pH adjustment and passivation) (neutralised nitrate to biological waste water treatment)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "consumable:sodium-hydroxide",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.001,
        "title": "Sodium hydroxide (100 % basis)",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "disposal:consumable.sodium-hydroxide",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 0.001,
        "title": "Disposal: Sodium hydroxide (100 % basis) (neutralised sodium salts to biological waste water treatment)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "consumable:activated-carbon",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 5e-05,
        "title": "Activated carbon (off-gas adsorbers A-201)",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "disposal:consumable.activated-carbon",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 5e-05,
        "title": "Disposal: Activated carbon (off-gas adsorbers A-201) (incineration or reactivation of spent activated carbon)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "consumable:ion-exchange-resin",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 7.5e-06,
        "title": "Ion-exchange resin (crude purification)",
        "unit": "kg"
      },
      {
        "direction": "output",
        "key": "disposal:consumable.ion-exchange-resin",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 7.5e-06,
        "title": "Disposal: Ion-exchange resin (crude purification) (incineration of spent ion-exchange resin)",
        "unit": "kg"
      },
      {
        "direction": "input",
        "key": "consumable:palladium-catalyst-loss",
        "kind": "material",
        "phase": "operation",
        "provenance": "assumed",
        "quantity": 1e-07,
        "title": "Palladium lost from the hydrogenation catalyst (as Pd)",
        "unit": "kg"
      }
    ],
    "not_computed": [],
    "publishable": false,
    "result": {
      "classification": "partial",
      "gaps": 20,
      "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": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "feed:MKQ",
      "link": "technosphere",
      "type": "input"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "feed:MKS",
      "link": "technosphere",
      "type": "input"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "feed:ALU",
      "link": "technosphere",
      "type": "input"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "product:SPENT",
      "link": "technosphere",
      "type": "output"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "emission:DIBC",
      "link": "biosphere",
      "type": "emission"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "emission:TMB",
      "link": "biosphere",
      "type": "emission"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "consumable:nitric-acid",
      "link": "technosphere",
      "type": "input"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "disposal:consumable.nitric-acid",
      "link": "technosphere",
      "type": "output"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "consumable:sodium-hydroxide",
      "link": "technosphere",
      "type": "input"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "disposal:consumable.sodium-hydroxide",
      "link": "technosphere",
      "type": "output"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "consumable:activated-carbon",
      "link": "technosphere",
      "type": "input"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "disposal:consumable.activated-carbon",
      "link": "technosphere",
      "type": "output"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "consumable:ion-exchange-resin",
      "link": "technosphere",
      "type": "input"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "disposal:consumable.ion-exchange-resin",
      "link": "technosphere",
      "type": "output"
    },
    {
      "dataset": "hydrogen-peroxide-anthraquinone-autoxidation-process-50-kt-a-h2o2-50-wt",
      "key": "consumable:palladium-catalyst-loss",
      "link": "technosphere",
      "type": "input"
    }
  ],
  "maintainers": [
    {
      "name": "Artur Schweidtmann"
    }
  ],
  "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": "10.2760/77304",
      "title": "Falcke, H. et al. (2017) Best Available Techniques (BAT) Reference Document for the Production of Large Volume Organic Chemicals, EUR 28882 EN, JRC, chapter 12 Hydrogen peroxide"
    },
    {
      "doi": "10.1002/14356007.a13_443.pub3",
      "title": "Goor, G., Glenneberg, J., Jacobi, S. (2007) Hydrogen Peroxide. Ullmann's Encyclopedia of Industrial Chemistry (lead only; not read for this design)"
    },
    {
      "doi": "10.1002/anie.200503779",
      "title": "Campos-Martin, J. M., Blanco-Brieva, G., Fierro, J. L. G. (2006) Hydrogen peroxide synthesis: an outlook beyond the anthraquinone process. Angew. Chem. Int. Ed. 45, 6962 (lead only; not read for this design)"
    },
    {
      "title": "NIST Chemistry WebBook, SRD 69: standard enthalpies of formation of H2O2 and H2O (liquid)",
      "url": "https://webbook.nist.gov/chemistry/"
    }
  ],
  "repository": {
    "access": "public",
    "path": "processes/hydrogen-peroxide-1",
    "url": "https://github.com/ChemE-as-Code/process-library"
  },
  "representations": [
    {
      "bytes": 46959,
      "id": "BFD",
      "kind": "bfd",
      "preview": "artifacts/hydrogen-peroxide-1/BFD.svg",
      "source": "process/BFD.xml",
      "status": "preview",
      "title": "Block flow diagram"
    },
    {
      "bytes": 211614,
      "id": "PFD",
      "kind": "pfd",
      "preview": "artifacts/hydrogen-peroxide-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": "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": "Cyclic hydrogenation of a 2-ethylanthraquinone working solution on palladium, autoxidation with air, water extraction, crude purification and vacuum concentration to 50 wt% H2O2, with working-solution drying and alumina regeneration; hydrogen is a boundary feed. Concept stage, assumed basis set inside the EU LVOC BREF ranges.",
  "title": "Hydrogen peroxide by the anthraquinone autoxidation process (50 kt/a H2O2, 50 wt%)",
  "validation": {
    "notes": "Concept PFD with closed mass, component and element (reaction extent) balances in every block and step (cheme validate, cheme process streams). The reactors are conversion models calculated by cheme; the separator outlets and all duties are specified values from an independent script (scripts/hp_balance.py) whose specifications sit inside the EU LVOC BREF 2017 ranges (H2 63.5 kg/t, air 4215 Nm3/t, demineralised water 1.19 t/t, total energy about 3.6 GJ/t). Energy closure is not evaluable in core, the extraction is a specified split. cheme maturity: calculation maturity none (feed flows and separator specifications assumed, not sourced). The preliminary gate-to-gate LCI in lca/ leaves every background unmapped (gaps); its mass and element balances close. Not reviewed. 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/hydrogen-peroxide-1/",
    "stale": false,
    "tool": "cheme-as-code 1.6.0",
    "views": [
      "checks",
      "streams"
    ]
  }
}