Absorption kinetics of mercury (II) chloride into mono-ethylene glycol (MEG) solution

Different mercury species have been found in the oil and gas reservoirs. Dynamic absorption of mercury (II) chloride (HgCl2) into solutions of mono-ethylene glycol (MEG) is reported in this work. It was observed that absorption of HgCl2 into MEG solutions was comparable to the absorption in pure wat...

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Bibliographic Details
Published inFuel processing technology Vol. 185; pp. 46 - 55
Main Authors Kho, Fenny, Pham, Gia Hung
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.03.2019
Elsevier Science Ltd
Subjects
Absorption
Dynamic absorption
Ethylene glycol
Fourier transforms
FTIR
Gas pipelines
Inductively coupled plasma mass spectrometry
Mercury (II) chloride
Mercury (metal)
Mercury analysis
Mercury compounds
Mono-ethylene glycol (MEG)
Natural gas
Petroleum pipelines
Raman spectroscopy
Regeneration
Spectrum analysis
Vapor phases
Dynamic absorption
Mono-ethylene glycol (MEG)
Raman spectroscopy
Mercury analysis
FTIR
Mercury (II) chloride
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Summary:Different mercury species have been found in the oil and gas reservoirs. Dynamic absorption of mercury (II) chloride (HgCl2) into solutions of mono-ethylene glycol (MEG) is reported in this work. It was observed that absorption of HgCl2 into MEG solutions was comparable to the absorption in pure water and the effect on MEG was not seen for MEG concentrations of 2–30 v/v%. The absorption flux was mainly affected by the absorption temperature and the concentration of HgCl2 in the gas phase. Utilisation of several mercury analysis techniques such as flow injection mercury spectroscopy (FIMS), inductively couple plasma-mass spectroscopy (ICP-MS), Fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy show that no interactions between HgCl2 and MEG were detected for the test parameters studied. The findings from this work helps to improve the knowledge on the behaviour of HgCl2 within natural gas processing facilities, especially during transportation in pipelines and the MEG regeneration process. •2–30 v/v% MEG has no influence on the absorption flux of HgCl2 into water.•The HgCl2 absorption is controlled by the gas film resistance.•Absorption of HgCl2 in MEG is affected by temperature and HgCl2 gas concentration.•No interactions between HgCl2 and MEG were detected in this work.
ISSN:0378-3820
1873-7188
DOI:10.1016/j.fuproc.2018.11.018