Wet-quenched metallurgical coal coke from by-product ovens · Calculation Rules
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- Candidate
- Content maturity
- Authored methodology
- Current version
- 0.1.0Last updated
- Readiness
- Review required
Methodology and translation states come from the source record; publishing this website does not change their review status.
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zh-CN · Aligned
Status, classification and source details
Readiness
- Warnings methodology_not_reviewed Authored methodology is candidate guidance and still requires methodology review.
Classification mapping
CPC 3.0:33110 · narrower
Source
Calculation Rules
| rule_id | Applies to | Formula or rule | Inputs | Output | source_ids |
|---|---|---|---|---|---|
| campaign_normalisation | all inventory rows | Inventory intensity = actual external exchange integrated over the same campaign / accepted net as-received dispatched coke mass in kg. Correct opening/closing stocks and exclude breeze from this denominator; final coke output is 1 kg. Unallocated physical amounts remain attached to the physical graph. | cp_coke; cp_material; cp_packaging; cp_products; cp_gas; cp_utilities; cp_water; cp_waste; cp_air; cp_effluent | per 1 kg reference flow | |
| gas_state_conversion | cog_export; natural_gas_import; nitrogen_makeup | Dry reference volume = measured wet volume × dry mole fraction × measured absolute P / reference absolute P × reference T / measured T × reference Z / measured Z, with temperatures in kelvin and a declared equation-of-state method. Mass = measured volume × density at the same composition/wet-dry/T/P/Z state. Reject incomplete provider quantity matching. | cp_gas | state-bound gas quantities, then campaign_normalisation | |
| air_integration | atmospheric emissions except water vapour | Emission mass = sum of matched concentration × gas volume intervals plus independently justified event/fugitive loads; keep raw measurement basis before reference-gas or oxygen corrections. Do not replace the actual gas volume with a BAT limit concentration or default coke-gas yield. Separate exclusive PM bins; subtract cumulative measurements only if sampling definitions/time are compatible and differences are non-negative. | cp_air | species mass per 1 kg reference flow | jrc-iron-steel-coking-2013; epa-coke-production-2008 |
| effluent_integration | final water emissions | Species mass = sum of concentration × matched final discharged volume with documented unit conversion. If reported as N, S or a total assay, establish the actual analyte and method-specific conversion first. Only laboratory-speciated ions enter corresponding atomic rows; auxiliary total indicators do not close the elemental balance by assumption. | cp_effluent; cp_water | species mass per 1 kg reference flow | jrc-iron-steel-coking-2013 |
| balance_reconciliation | unallocated physical ledgers | For total mass and each of C/H/O/N/S, external inputs = external outputs + stock change + disclosed residual with measurement/model uncertainty; reactions do not create or destroy mass or elements. Include complete combustion air, humidity and exhaust carriers, all wet materials, products, waste and return interfaces. For the water species ledger alone, record chemically formed/consumed H2O explicitly, alongside incoming humidity and material-bound water. Internal pipes have equal amounts, composition, wet/dry basis and state at paired ends, canceling only at the aggregate boundary. Energy uses one consistent NCV or GCV/reference-state convention with documented conversions: external chemical/thermal/electrical inputs = external chemical/sensible/latent/thermal/electrical outputs + losses + energy-stock change + disclosed reference-state/reaction-energy residual. Coal-derived gas burned inside is counted once within coal input energy, never again as external gas input/export; avoid double-counting latent heat under the chosen calorific convention. Do not close residuals by invented emissions. | cp_balances; cp_gas; cp_water; cp_material; cp_products; cp_utilities; cp_packaging; cp_waste | separate total-mass/C/H/O/N/S/water/energy ledgers with uncertainty | jrc-iron-steel-coking-2013 |
Data Quality Requirements
| requirement_id | Applies to | Requirement | Evidence |
|---|---|---|---|
| dq_route | coking_plant | Document one actual connected configuration. A BREF alternative or historical single-plant example is not evidence of its presence at the site. | site diagram, operation records and cited original sections |
| dq_completeness | all inventory rows | Every actual external material, fuel, product, waste and emission needs one atomic row. Add distinct actual coal components, treatment chemicals, oils, packaging, maintenance inputs and pollutants when present, with equivalent bilingual units and verified identities. Unmeasured is not zero; non-applicability requires evidence. | meter map, procurement/product/waste accounts and source assessment |
| dq_source_limits | coking_plant | No universal yield, moisture, carbon/sulphur, heating value, quench evaporation or emission default is prescribed. BREF Table 5.2 is explicitly unsuitable for calculations and excludes some diffuse/fugitive/handling releases; the single-plant energy illustration is not a standard balance. EPA historical factors require independent source/control/basis matching if later used. | BREF 5.2.1–5.2.2; EPA 12.2.2 and factor-specific provenance |
| dq_identity | coking_plant | UUID establishes only the declared physical identity/property, not a compatible supplier process dataset. Retain source classification defects and independently verify concentrations, geographical/voltage/supply states and reference quantities. Unknown UUIDs or pressure/state bases remain explicit until resolved. | identity records, analyses and supplier reference definition |
9. Validation Rules
| rule_id | applies_to | Rule | source_ids |
|---|---|---|---|
| validate_reference | coke_dispatch | Require exactly one accepted final product reference with 1 kg as-received net coke, and identical bilingual denominator, aggregation and formula. Do not hide a verified intermediate UUID or add a fabricated identity to bypass reference checks. | |
| validate_route | coking_plant | Check coal-coke manufacturing and wet-quench route, actual gas treatment connectivity and supply boundaries; reject petroleum-coke or dry/non-recovery route mixing and unreviewed chemical substitutions. | jrc-iron-steel-coking-2013; epa-coke-production-2008 |
| validate_balances | coking_plant | Require source-bound whole-plant and stage mass/C/H/O/N/S/water/energy ledgers before allocation, paired internal links and independently justified residual uncertainty. No generic complete closure tolerance or per-coke recipe is assumed. Missing balances make the concrete dataset incomplete. | jrc-iron-steel-coking-2013 |
| validate_pollutants | coking_plant | Check outdoor air/water versus resource/waste identity, each species/CAS, fossil origin where specified and reference property/unit. Preserve NOx quantity-definition uncertainty separately from identity; exclude N2O from NOx. Do not sum nested PM ranges or compound/total indicator duplicates. Biogenic CO2, if actual biogenic carbon is introduced under a reviewed extension, remains in the LCI irrespective of GHG reporting conventions. | jrc-iron-steel-coking-2013; epa-coke-production-2008 |
| validate_allocation | coking_plant | Confirm each genuine external co-product, direct/shared burden split, matched revenue basis if used and conservation of allocated burden. Preserve physical output amounts and receiving gates without allocation-share scaling. Unresolved zero/negative values, absent prices or causal basis require review. | |
| validate_readiness | coking_plant | Before using a concrete dataset, resolve all actually applicable empty identities and all supplier quantity/compartment debts, retain missing-data findings and uncertainty. Method compilation/measurement checks do not constitute scientific acceptance, a site survey or validation of an authored dataset. |
10. Published Dataset Profile
| Field | Value |
|---|---|
| dataset_role | secondary_dataset; background_dataset |
| downstream_use | actual coal-coke supply at the declared coking gate; allocated companion-product interfaces only with their own verified gates |
| allowed_use | compatible blast-furnace coke procurement/manufacturing LCI with actual route and grade; matched secondary/background use after dataset evidence review |
| excluded_use | petroleum/peat/lignite/semi-coke/retort carbon; dry quench or non-recovery; downstream refining or iron output prediction; default factory inventory from literature |
| required_metadata | reference qualifiers; supplier flow/process pins; gas/steam/electricity basis; route diagram; complete campaign/stock/source records; all coproduct quantities and allocation; receiving states |
| required_quality_disclosure | unallocated balances and residuals; analysed water/carbon/sulphur/heat bases; meter/sampling/LOQ/missing data; route-specific exclusions; unresolved identities; price/causal sensitivity; scientific review state |
| update_trigger | coal/blend/grade or quench/charging change; gas-cleaning chemistry; utility/recipient/provider basis; recovered product gate; allocation market change; new original evidence |
11. Data Sources
| Source id | Type | Reference | Used for |
|---|---|---|---|
| jrc-iron-steel-coking-2013 | official_guidance | European Commission JRC, Iron and Steel Production BREF, 2013, EUR 25521 EN, doi:10.2791/97469; https://bureau-industrial-transformation.jrc.ec.europa.eu/sites/default/files/2019-11/IS_Adopted_03_2012.pdf | Chapter 5 §§5.1.1–5.1.5, printed pp.209–221 (PDF237–249): coal/battery, distinct wet/dry quench, tar/ammonia/light oil and desulphurisation alternatives/water circuits; §§5.2.1–5.2.2 printed pp.225–234 (PDF253–262): source omissions, wastewater/residue and single-plant energy limits. Manufacturing and balance context only, no default amounts. |
| epa-coke-production-2008 | official_guidance | US EPA, AP-42 Section 12.2 Coke Production, May 2008; https://www.epa.gov/sites/default/files/2020-11/documents/c12s02_may08.pdf | §12.2.1.1–12.2.1.4 and Figures12.2-1–3, pp.12.2-1–6; §12.2.1.5–12.2.2 pp.12.2-7–9: conventional byproduct route, wet quench, ammonium sulphate and petroleum wash-oil/crude light-oil recovery, source/emission separation and non-recovery exclusion. Historical US context, no universal percentages, operating conditions or emission factors. |
| ipcc-energy-fuel-definitions-2006 | official_guidance | IPCC 2006 Guidelines for National Greenhouse Gas Inventories, Volume 2, Chapter 1, Tables 1.1–1.2; https://www.ipcc-nggip.iges.or.jp/public/2006gl/pdf/2_Volume2/V2_1_Ch1_Introduction.pdf | Table 1.1, printed p.1.14/PDF14: positive high-temperature coal-carbonisation coke-oven/metallurgical-coke definition. Table 1.2, printed p.1.18/PDF18: confirms the referenced secondary NCV is a statistical default, not a site grade. No default NCV, yield, moisture, carbon content or emission factor is adopted. |
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