The Benefits of Using Multi-element EDXRF Analysers for Crude Oil Analysis

Analysing for sulphur is a top concern; however, contamination or adulteration through salts and other chlorine-bearing compounds or metals such as nickel and vanadium are common. Chlorine, if unmeasured and not corrected, can lead to corrosion damage in blending operations, pipelines, or during the refining process. Iron, nickel, and vanadium in crudes can also negatively impact the fluid catalytic cracking (FCC) process.

Elemental analysis using energy dispersive X-ray fluorescence (EDXRF) is one of the easiest, most reliable, and most economical analytical techniques for crude oil analysis.

Since multi-element analytical capabilities are essential for today’s crude oil market, Rigaku EDXRF instruments offer the flexibility and reliability to monitor sulphur, chlorine, metals, and other elements using a single system. They provide multi-element capabilities and low limits of detection. Rigaku EDXRF systems are easy to use and can detect and correct for chlorine and other elements, so the sulphur reading is not affected. Users can quickly adapt to future petroleum applications and meet compliance with multiple testing methods and standards.

Rigaku EDXRF benchtops are well-suited for measuring sulphur in crude oil per ASTM D4294, metals in crude and residual fuel oils per ASTM D8252, and chlorine in crude per ASTM D4929. Systems include the compact NEX QC Series for routine quality control needs, the advanced NEX DE for more demanding applications, and the powerful NEX CG II indirect excitation analyser for complex applications and research.

NEX QC Series analysers combine superior performance capabilities with affordability and are ideal for measuring sulphur in crude per ASTM D4294. These instruments are lightweight, compact, and do not require an external PC. The intuitive touchscreen interface, built-in printer, and optional portable roller case make these instruments easy to use and convenient.

NEX DE is a high-performance benchtop that helps users ensure compliance quicker and easier. It offers quick analysis of nickel and vanadium per ASTM D8252-19 and for measuring chlorine per ASTM D4929 Part C — and much more.

NEX CG II is a highly versatile all-in-one petroleum analyser offering fast, reliable measuring and monitoring for ultra-low and trace element concentrations up to percent levels. Unlike conventional EDXRFs, NEX CG II is an indirect excitation system using secondary targets rather than tube filters. This unique feature results in exceptionally low detection limits and provides exceptional performance for ASTM and international compliance for ultra-low sulphur applications. Additionally, NEX CG II delivers the lowest detection limits for chlorine in crude per ASTM D4929. These superior analytical capabilities rival larger, more expensive systems and replace the need for multiple single-element benchtops.

Applied Rigaku Technologies, Inc. offers a complete product line of benchtop EDXRF and on-line process analysers serving upstream and midstream for in-field use and downstream for refineries and commercial labs. For more information, contact us today.