Hydrotreating hydrogen-supply emissions balance

RefineryHydrotreatingHydrogenEmissionsBalance converts a qualified RefineryHydrotreatingHydrogenUtilityBalance into indirect hydrogen-supply emissions and a caller-priced carbon-cost receipt. The upstream sulfur, hydrogen-supply, recycle, throughput, and utility receipts remain immutable.

Explicit scenario inputs

The caller supplies:

These values are not NeqSim defaults. A study must state the hydrogen-production pathway, lifecycle boundary, data source, geography, time basis, and price scenario externally.

For external fresh hydrogen mass flow m_H2, the scenario emissions are:

E_H2 = m_H2 * EF_H2   [kg CO2e/h]

The carbon-price receipt is:

C_CO2e = E_H2 * p_CO2e / 1000   [caller-owned currency units/h]

Emissions and cost per tonne of fresh liquid feed use the qualified feed mass rate from the upstream throughput receipt.

Java example

RefineryHydrotreatingHydrogenEmissionsBalance emissions =
    RefineryHydrotreatingHydrogenEmissionsBalance.calculate(
        utility, 10.0, 100.0);

double emissionsKgCo2ePerHour =
    emissions.getHydrogenSupplyEmissionsKgCo2EquivalentPerHour();
double carbonCostPerTonneFeed =
    emissions.getCarbonCostPerTonneFeed();

The 10 kg CO2e/kg H2 emission factor and 100 currency-units/tonne CO2e carbon price are illustrative scenario inputs. They are not validated observations, recommended factors, market prices, or embedded correlations.

On the qualified public DOE/OEDI Big Hill 1000 kg/h case, these illustrative inputs give 0.549093756 kg/h fresh H2, 5.49093756 kg CO2e/h, 5.49093756 kg CO2e per tonne of feed, 0.549093756 currency units/h, and 0.549093756 currency units per tonne of feed.

Provenance and boundary

The material basis inherits the DOE/OEDI Big Hill assay and the EIA, AIChE, and NIST evidence documented by the qualified sulfur, hydrogen-supply, recycle, throughput, and utility receipts. This increment introduces no fitted parameter, emissions database, commodity-price dataset, or physical correlation.

The receipt is indirect scenario bookkeeping only. It does not select a hydrogen-production pathway, establish a lifecycle boundary, predict direct process, furnace, compressor, electricity, or steam emissions, model carbon capture, calculate reaction heat or equipment duty, predict kinetics, catalyst behavior or phase equilibrium, perform optimization, demonstrate regulatory compliance, or establish a verified product carbon footprint.