Solvent Regeneration by Thermopervaporation in Subsea Natural Gas Dehydration: An Experimental and Simulation Study
نویسندگان
چکیده
An in-house designed membrane process suitable for subsea natural gas dehydration was studied. The use of a absorber together with thermopervaporation (TPV) unit solvent regeneration in closed loop enables the effective and clean production high-pressure close to wellhead. This avoids continuous chemical injection preventing hydrate formation pipelines. absorbent agent (triethylene glycol (TEG)) by TPV is highly energy-efficient, owing unlimited free cooling energy from cold water. In this work, performance membranes TEG evaluated experimentally first time. Morphological permeation characterizations an AF2400 thin-film composite were carried out, high separation factors outperforming vapor–liquid equilibrium (VLE) obtained solutions containing various water contents at feed temperatures ranging 30 70 °C. highest values factor (128,000) permeability (2380 (Barrer)) solution wt % °C, while flux (468 (g/m2·h)) reached Moreover, concentration polarization phenomenon induced temperature gradient revealed membrane’s vicinity channel. A 3D computational fluid dynamics simulation performed over entire module correct driving force more precise assessment permeance. profiles domains explored, good agreement experimental data obtained.
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ژورنال
عنوان ژورنال: Industrial & Engineering Chemistry Research
سال: 2021
ISSN: ['0888-5885', '1520-5045']
DOI: https://doi.org/10.1021/acs.iecr.1c00266