Data on searching for synergy between alcohol and salt to produce more potent and environmentally benign gas hydrate inhibitors

• DOI: 10.1016/j.dib.2024.110138
• Publication Date: 2024-02-09T06:32:47Z
• Authors: Anton P. Semenov; Rais I. Mendgaziev; Vladimir A. Istomin; Daria V. Sergeeva; Vladimir A. Vinok...; Yinghua Gong; Tianduo Li; Andrey S. Stoporev
• Keywords: Clathrate hydrate; Research article

In order to systematically study the synergistic effect of gas hydrate inhibition with mixtures methanol (MeOH) and magnesium chloride (MgCl2), impact these compounds on thermodynamic stability methane in systems CH4-MeOH-H2O, CH4-MgCl2-H2O, CH4-MeOH-MgCl2-H2O was experimentally investigated. The pressure temperature conditions three-phase vapor-aqueous solution-gas equilibrium were determined for systems. resulting dataset has 164 points within range 234-289 K 3-13 MPa. All measured as endpoint dissociation during heating stage. phase boundaries identified 8 MeOH (up 60 mass%), 5 MgCl2 solutions 26.7 14 both inhibitors. Most using a ramp technique (0.1 K/h) under isochoric when fluids stirred at 600 rpm. It found that even 0.5 K/h rate CH4-MgCl2-H2O system low salt concentrations, along all mixed aqueous methanol, gives results do not differ from 0.1 K/h, considering measurement uncertainties. measurements high content acquired step technique. coefficients empirical equations approximating each inhibitor concentration defined. change slope parameter equation analyzed function content. Correlations accurately describe mass% mol% scale obtained. freezing temperatures single confirm consistency data.