Hydrogen Pipeline Odorant Injection Rate
Determine odorant dosing requirements for hydrogen pipelines by combining throughput, target concentration, and pump availability.
Pipeline operations aid—validate against local regulatory odorization requirements and onsite flow measurements before commissioning.
Examples
- 42,000 Sm³/h flow, 18 mg/Sm³ target, 0.98 kg/L density, 95% availability ⇒ 794.74 g/hour of odorant, equivalent to 0.811 L/hour at 0.98 kg/L density. Adjusted for 95.00% injection availability.
- 12,500 Sm³/h flow, 23 mg/Sm³ target, optional inputs blank ⇒ 287.50 g/hour of odorant, equivalent to 0.293 L/hour at 0.98 kg/L density.
FAQ
Can I input flow in standard cubic feet per hour?
Convert to standard cubic metres before entering the value. Multiply scfh by 0.0283168 to align with the calculator's unit basis.
How should I adjust for seasonal concentration targets?
Run separate scenarios for summer and winter targets, then configure the dosing skid with recipes or operator setpoints that match the seasonal schedule.
What if the odorant is supplied as a diluted blend?
Enter the effective density of the delivered solution and, if needed, scale the target concentration to reflect the active compound's fraction within the blend.
Does uptime allowance replace redundancy calculations?
No. It simply scales the nominal rate. You should still design pump redundancy and storage to achieve the availability assumptions used here.
Additional Information
- Result unit: litres per hour for the odorant metering pump, with mass output in grams per hour.
- Injection availability adjusts the required rate to ensure coverage when pumps cannot operate continuously.
- Default density of 0.98 kg/L reflects common mercaptan and tetrahydrothiophene blends used in hydrogen pilots.