Instrument for benzene and toluene emission measurements of glycol regenerators

Veronika Hanyecz, Árpád Mohácsi, Sándor Puskás, Árpád Vágó, Gábor Szabó

Research output: Contribution to journalArticle

1 Citation (Scopus)


We introduce an in-field and in-explosive atmosphere useable instrument, which can measure the benzene and toluene concentration in two gas and two glycol samples produced by natural gas dehydration units. It is a two-phase, on-line gas chromatograph with a photoacoustic spectroscopy based detector. The time resolution is 10 min per cycle and the minimum detectable concentrations are 2 mg m-3 for benzene, 3 mg m-3 for toluene in natural gas, and 5 g m-3 for benzene and 6 g m-3 for toluene in glycol. Test measurements were carried out at a dehydration plant belonging to MOL Hungarian Oil and Gas Company. Benzene and toluene emissions of gas dehydration unit are calculated from the measured values based on mass balance of a glycol regenerator. The relationship between the outdoor temperature and the measured concentration was observed which is caused by temperature-dependent operation of the whole dehydration unit. Emission decreases with increase of outdoor temperature.

Original languageEnglish
Article number115901
JournalMeasurement Science and Technology
Issue number11
Publication statusPublished - Nov 2013


  • benzene
  • chromatography
  • emission
  • gas dehydration
  • glycol regeneration
  • toluene

ASJC Scopus subject areas

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

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