Matrix-independent TS Determination in Light Hydrocarbons, Spark Ignition Engine Fuel, and Diesel Engine Fuel by UV Fluorescence according to ASTM D5453 – Horizontal Approach Application Note · multi EA 5100

Introduction

The determination of total sulfur (TS) by means of combustion-coupled UVfluorescence detection is an integral part of the daily routine in the process and quality control of refineries, derived fuels production, and many other labs dealing with control and legal limit checking of fuels and related matrices. No matter if analyzing feeds (e.g., crude oil), process streams (e.g., higher vacuum fractions) and residues (e.g., bottomers), or the end products (e.g., diesel), it is crucial to gain information about the sulfur content in the shortest possible time. This is to avoid undesirable effects such as catalyst poisoning, corrosion of installation parts, low product quality, and exceeding legal limits. Therefore the sulfur content has to be determined in close intervals. Also the fact that fewer and fewer experienced lab technicians have to analyze an ever-increasing number of samples leads to high pressure on performance in terms of reliable results and fast processing time. In contrast to easily processed fuels, others are challenging and require an additional sample pretreatment, combustion in horizontal mode with boat inlet, and the adaptation of crucial process parameters. These tasks require time and experienced operators. The smallest mistake in method optimization will not only affect the quality of results, but also lead to remarkably increased maintenance effort and cost. Delayed or incorrect results significantly influence the company‘s performance and profitability. Where time is money, a technique ensuring fast and reliable analyses independent of matrix properties and operator skills is urgently needed. 

The multi EA 5100 with its double furnace technology enables optimal conditions for any type of matrix. Soot formation, incomplete or uncontrolled combustion, and deflagration can be avoided easily using the horizontal mode with flame sensor technology.