Analytical Instrumentation

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

Apr 18 2018 Read 428 Times

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.

Read comments0

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.


Digital Edition

Petro Industry News June / July 2018

July 2018

In This Edition... Fuel for Thought - A good year for Endress+Hauser - Dr. Shah honoured by Society of Tribologists and Lubrication Engineers - DURAG Group acquire AP2E Analytical Instru...

View all digital editions

Events

AGMSC

Jul 30 2018 Moon Township, PA, USA

DXC 2018

Aug 06 2018 Westminster, CO, USA

Oil and Gas

Aug 09 2018 Madrid, Spain

ONS 2018

Aug 27 2018 Stavanger, Norway

Abu Dhabi International Downstream

Sep 03 2018 Abu Dhabi, UAE

View all events