• Improved method for the determination of the organic chloride content in crude oil

Analytical Instrumentation

Improved method for the determination of the organic chloride content in crude oil

Apr 18 2018

The recent release of ASTM Method D-4929-17 offers users more flexibility in the measurement of the naphtha cut coming from the distillation of crude. The method operates on the assumption that all of the chloride present distils over in the naphtha cut. The chloride in the naphtha can be determined by several analytical techniques. This concentration can then be used to determine the amount in the crude by determining the percentage of the crude oil that came over during the distillation.

Historically, the chloride in the naphtha cut was determined by either a wet chemistry titration or a microcoulometric measurement. Since both of these methods have limitations, new or X-ray methods were investigated in this study. At the same time, three different X-ray technologies were simultaneously evaluated during the ILS Study. These included EDXRF technology, MWDXRF, and MEDXRF Technology.

The results of this study are documented in ASTM Research Report RR: D02-1875. The results of these tests are collected together as Analytical Method C of the newly approved method. The results of method C showed improved repeatability (r) relative to methods A and B. The MEDXRF technology as represented by Horiba Scientific’s MESA-7220 proved to be superior to the less expensive technology and as good as the more expensive technology.

The very affordable MESA-7220 offers great low level sulphur measurement capability as evidenced by ASTM D7220. It is also capable of doing higher level sulphur measurements as a part of D4294. This makes it a very versatile instrument for doing sulphur and chloride in crude oil as well as low sulphur levels in fuels.


Digital Edition

PIN 25.1 Feb/March

March 2024

In This Edition Safety - The technology behind the ION Science Tiger XT - Safety with ammonia and LOHCs as hydrogen carriers Analytical Instrumentation - Discussion on new tribology te...

View all digital editions

Events

UzChemPlast Expo

Apr 03 2024 Tashkent, Uzbekistan

ATYRAU Oil & Gas Kazakhstan

Apr 03 2024 Atyrau, Kazakhstan

analytica 2024

Apr 09 2024 Munich, Germany

ChemBio Finland 2024

Apr 10 2024 Helsinki, Finland

View all events