Metrology and Online Gas Chromatography on Sulphur Compounds in Natural Gas

The need for accurate, reliable and cost effective means for odorant and sulphur measurements in NG pipelines has led to the installation of this cutting edge yet established technology. Understanding the needs of the users and operators and tailoring a system to perform the direct measurement of sulphurs and mercaptan allows for immediate adjustment of your odourant injection rates, and an accurate defensible record of the amount of odorant and naturally occurring sulphurs in NG.

With a simple low cost solution for installation, maintenance and operation combined with online validation of the results the energyMEDOR gas chromatograph, from Chromatotec (France), performs in the most stringent application with the lowest cost of ownership on the market.

The energyMEDOR is the fully automated Gas Chromatograph for sulphur monitoring. With only a need for nitrogen carrier gas and standard electrical power, installation can be made into your current monitoring enclosure or installed in a standalone system. The energyMEDOR is equipped with two columns, heated in isothermal oven with a preset temperature of 45°C, a 10-ports pneumatic valve, electrochemical detector and an internal permeation standard or external cylinder to validate your results.

The energyMEDOR automatically samples the NG from the pipeline continuously in low volume, the NG travels through a loop, the loop is injected onto the chromatographic columns where the sulfurs are separated, after the columns the sample is detected on the electrochemical detector without additional conversion or sample manipulation.

Following the detection of the compounds the onboard system processes the data and provides the operator with data in either analog or digital formats. In addition the operator can review all data with the software installed into the energy MEDOR.

The energyMEDOR has been proven by Chromatotec's global partners to provide the most accurate and reliable analysis in the industry: USA, ASTM standard work, linearity and repeatability of several compounds have been tested; Spain, EN ISO 19739 test method for repeatability and linearity in addition; France, tests on intercomparison for response factors.

The energyMEDOR NG specific detector is sensitive to sulphur compounds at ppm or ppb levels. The technique results in unsurpassed separation of the sulfur compounds, exceptional stability of the results, combined with the ease of an automatic platform.

The MEDORs are fully automated rugged industrial analysers that provide an ideal solution for companies and operators looking to increase data capture and maximise efficiency. Chromatotec's partners validate the energyMEDOR measurement of sulphur compounds for odourisation of natural gas and pipeline integrity monitoring.