Marine oil sulfur analysis tester — X-ray fluorescence sulfur analyzer Compass-4294
Background and Introduction
Marine Fuel and Oil Monitoring – Compass 4294 XRF
For ships operating outside designated emission control areas, the IMO limits the amount of sulphur in fuel oil used on board to 0.50%m/m (маса) from 1 January 2020. This will significantly reduce the amount of sulphur dioxide emitted. Ships should have significant health and environmental benefits for the world, and especially for the people living near ports and coasts.
As of 1 January 2015, the sulphur limit for fuels used by ships controlling sulphur oxides (SOX) operating in an IMO-designated Emission Control Area (ECA) is 0.10%m/m.
Powerful Energy Dispersive X-ray Fluorescence (EDXRF) Compass 4294 Series sulfur analyzers provide analytical capabilities with greater sensitivity and accuracy than laboratory-grade analyzers can provide. This application guide demonstrates the performance of Compass 4294 for sulfur testing in different 1 oil and fuel samples.
Marine oil sulfur analysis tester — X-ray fluorescence sulfur analyzer Compass-4294
Instrument Parameters
Marine oil sulfur analysis tester — X-ray fluorescence sulfur analyzer Compass-4294
Precision studyTo study the accuracy of Compass 4294, two crude oil samples with certified values of 0.1%6 и 1% sulphur were analyzed. The results shown below show that Compass 4294 makes accurate measurements of a wide range of hydrocarbon samples. Another important parameter for XRF devices is the repeatability of the analysis. thisThe sample was measured 5 times over a period of time. The mean, standard deviation (Std Dev) and relative standard deviation (RSD) of sulfur content were calculated from the following data to give test performance of >0.1% и 1% сяра
Test procedures and calibration demonstrations
A range of commercially available petroleum standards have been used at the plant to calibrate the EDXRF spectrometer. Customers can run sample tests without any further calibration process in the field.
Only four steps are required to perform the measurement. See pictures of how to prepare and place samples for analysis as shown below
1-1, prepare the sample cup. Cover the sample cup with a 6 um Mylar film on the analysis side. The same Mylar film is also pre-set on the protective test window platform to avoid any accidental sample leakage into the analyzer.
1-2, usually pour 3-5 ml of oil from each standard into the analyzer’s cup up to the filling line.
1-3, place the sample cup on the Compass XRF sample loader, which fits the sample cup size perfectly.
1-4, click the “Start” button to run the analysis. The result will be displayed after 130 secondsUse a set of commercially available heavy fuel oil standards with known sulfur concentrations for calibration.
Фигура 2-2 below shows the correlation curve of sulfur in oils with a high concentration range at the percentage level.Approximate this data with a linear function.
R2 is the coefficient of determination.
The ideal correlation has an R2 value of 1.
Marine oil sulfur analysis tester — X-ray fluorescence sulfur analyzer Compass-4294
Marine oil sulfur analysis tester — X-ray fluorescence sulfur analyzer Compass-4294
conclusion
Sulfur analysis using ASTM D4294 and ISO 8754 remains an important measurement for refineries and independent laboratories around the world. The global regulatory trend for low hydrophobic fuels indicates the need for a fast, precise analytical solution. Root 1According to the test results obtained above, Compass 4294 proves capable of measuring sulfur in oil or fuel samples that meet the strictest standards.
On-board fuel oil management is an important factor in preventing operational problems and sulfur noncompliance. Improper handling of on-board fuel oil can result in non-compliance with MARPOL requirements even if the fuel oil received is not compliant, and with its compact and portable design, Compass 4294 becomes an important tool for conducting quality control of on-board sulfur oil.