Experimental and modeling investigation on structure H hydrate formation kinetics

•Applying affinity model for the formation kinetics of sH hydrate and two stage kinetics.•Performing the experiments of hydrate formation of sH with MCP.•A unique path for the SH hydrate formation. In this work, the kinetics of crystal H hydrate and two stage kinetics formation is modeled by using t...

Full description

Saved in:
Bibliographic Details
Published in:Energy conversion and management 2013-12, Vol.76, p.1-7
Main Authors: Mazraeno, M. Seyfi, Varaminian, F., Vafaie sefti, M.
Format: Article
Language:English
Subjects:
Affinity
Applied sciences
Chemical affinity
Crystal H
Crystals
Decay
Energy
Ethers
Exact sciences and technology
Formation kinetics
Gas hydrate
Hydrates
Initial pressure
Mathematical models
Methane
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Applying affinity model for the formation kinetics of sH hydrate and two stage kinetics.•Performing the experiments of hydrate formation of sH with MCP.•A unique path for the SH hydrate formation. In this work, the kinetics of crystal H hydrate and two stage kinetics formation is modeled by using the chemical affinity model for the first time. The basic idea is that there is a unique path for each experiment by which the crystallization process decays the affinity. The experiments were performed at constant temperatures of 274.15, 275.15, 275.65, 276.15 and 277.15K. The initial pressure of each experiment is up to 25bar above equilibrium pressure of sI. Methylcyclohexane (MCH), methylcyclopentane (MCP) and tert-butyl methyl ether (TBME) are used as sH former and methane is used as a help gas. The parameters of the affinity model (Ar and tk) are determined and the results show that the parameter of ArRT has not a constant value when temperature changes in each group of experiments. The results indicate that this model can predict experimental data very well at several conditions.
ISSN:0196-8904
1879-2227
DOI:10.1016/j.enconman.2013.07.006