FN Archimer Export Format
PT J
TI Experimental Study of Mixed Gas Hydrates from Gas Feed Containing CH4, CO2 and N2: Phase Equilibrium in the Presence of Excess Water and Gas Exchange
BT 
AF LEGOIX, Ludovic
   RUFFINE, Livio
   DEUSNER, Christian
   HAECKEL, Matthias
AS 1:1,2;2:2;3:1;4:1;
FF 1:PDG-REM-GM-LCG;2:PDG-REM-GM-LCG;3:;4:;
C1 Helmholtz Ctr Ocean Res Kiel, GEOMAR, Wischhofstr 1-3, D-24148 Kiel, Germany.
   Inst Francais Rech Exploitat Mer IFREMER, Ctr Bretagne, Unit Geosci Marines, Dept Ressources Phys & Ecosyst Fond Mer, F-29280 Plouzane, France.
C2 IFM GEOMAR, GERMANY
   IFREMER, FRANCE
SI BREST
SE PDG-REM-GM-LCG
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-europe
IF 2.707
TC 7
UR https://archimer.ifremer.fr/doc/00452/56345/57935.pdf
LA English
DT Article
DE ;gas hydrates;CH4;CO2;N-2;high-pressure experiments;phase equilibrium;gas exchange
AB This article presents gas hydrate experimental measurements for mixtures containing methane (CH 4 ), carbon dioxide (CO 2 ) and nitrogen (N 2 ) with the aim to better understand the impact of water (H 2 O) on the phase equilibrium. Some of these phase equilibrium experiments were carried out with a very high water-to-gas ratio that shifts the gas hydrate dissociation points to higher pressures. This is due to the significantly different solubilities of the different guest molecules in liquid H 2 O. A second experiment focused on CH 4 -CO 2 exchange between the hydrate and the vapor phases at moderate pressures. The results show a high retention of CO 2 in the gas hydrate phase with small pressure variations within the first hours. However, for our system containing 10.2 g of H 2 O full conversion of the CH 4 hydrate grains to CO 2 hydrate is estimated to require 40 days. This delay is attributed to the shrinking core effect, where initially an outer layer of CO 2 -rich hydrate is formed that effectively slows down the further gas exchange between the vapor phase and the inner core of the CH 4 -rich hydrate grain. 
PY 2018
PD AUG
SO Energies
SN 1996-1073
PU Mdpi
VL 11
IS 8
UT 000446604100063
DI 10.3390/en11081984
ID 56345
ER

EF