H2S Analyser (ASTM D7621, IP 570, ISO 8217 Marine Fuel Specification)
ASTM D7621; IP 570 ‘Determination of Hydrogen Sulfide in Fuel Oil – Rapid Liquid Phase Extraction Method’.
An advanced instrument for the rapid measurement of H2S in liquid petroleum products, including residual marine fuels (ISO 8217) and refinery feedstock components.
- Measurement range from 0-250 mg/kg H2S (0-250 ppm H2S) in the liquid phase
- Fast measurement time of 15 minutes compared to 3 hours with IP 399
- A non chemical method, no wet chemistry involved
- Small lab bench footprint, fully portable operation
- Ideal for monitoring residual fuel blends, cargoes & products in the distribution system
- Critical Measurement method for Product Safety and Release
Who should use the H2S Analyser?
- Refineries and Fuel Blending Locations
- Tank Storage Terminals
- Marine Fuel Suppliers
- Inspection Companies
- Independent Analytical Services
The H2S Analyser was developed with Lloyd’s Register’s ‘Fuel Oil and Bunker Analysis Service’ (FOBAS) along with support of other major international oil companies to provide users with a simple to use instrument. H2S is efficiently purged from the test sample by a combination of heat and agitation, and is measured by a H2S technological advanced specific detector. The instrument offers a cost effective solution for H2S measurement – no costly chemicals are required and there is no need for analytical preparation by an expert chemist.
The instrument also has the capability with advice from SetaAnalytics to measure certain crude oil and other distillate products. The H2S Analyser is an excellent tool for supporting product Quality Control and safety ensuring product is within approved specification. It is also ideal for both product remediation treatment of feedstock components and off-spec products with fast repeat sample measurement capability.
Principle
A small volume of sample is dissolved in a diluent and heated under precisely controlled conditions to 60°C to release any entrained H2S content present in the sample. Clean air is passed through the test vessel to carry the H2S to the sensor, where the concentration is measured by an electro-chemical sensor. Airfflow through the sensor is measured by a mass flow meter. When the H2S concentration in the sample has been fully driven off the Analyser will calculate and report the total H2S released from the sample.
Operation
To conduct a test, 20ml of diluent is decanted into the test vessel, which is inserted into the heater block. After approximately 5 minutes, the diluent has reached 60°C and 1ml of sample is added to the diluent. Sample identity,operator name, weights of empty/charged syringe are input via the menu display and keys on the front membrane panel.
Automatic test result and error reports
The test is initiated by pressing the START/STOP Button, sample analysis is fully automatic and results are stored to memory at the end of the test. The Analyser software automatically detects leaks in the system and produces error codes and alerts if sample/test analysis is void.
Download to PC
Results can be printed out or downloaded via the RS232 interface.
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H2S Analyser leaflet for IP 570, ASTM D7621, ISO 8217
H2S Analyser presentation