کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
215602 1426245 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase equilibrium conditions for simulated landfill gas hydrate formation in aqueous solutions of tetrabutylammonium nitrate
ترجمه فارسی عنوان
شرایط تعادلی فاز برای تشکیل هیدرات گاز در محلول های آبی از نیترات تترابوتیل آمونیوم
کلمات کلیدی
هیدرات کلریدات، تعادل فاز، متان، دی اکسید کربن، تترابوتیل آمونیوم نیترات
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Hydrate equilibrium conditions for the simulated landfill gas (LFG) were reported.
• Thermodynamic effect of tetrabutylammonium nitrate changes with its mass fraction.
• The phase boundary was determined by employing an isochoric pressure-search method.

Hydrate phase equilibrium conditions for the simulated landfill gas (LFG) of methane and carbon dioxide (50 mol% methane, 50 mol% carbon dioxide) were investigated with the pressure range of (1.90 to 13.83) MPa and temperature range of (280.0 to 288.3) K at (0.050, 0.170, 0.340, and 0.394) mass fraction (w) of tetrabutylammonium nitrate (TBANO3). The phase boundary between liquid–vapor–hydrate (L–V–H) phases and liquid–vapor (L–V) phases was determined by employing an isochoric pressure-search method. The phase equilibrium data measured showed that TBANO3 appeared a remarkable promotion effect at wTBANO3wTBANO3 = 0.394, corresponding to TBANO3 · 26H2O, but inhibition effect at wTBANO3wTBANO3 = (0.050, or 0.170) on the semiclathrate hydrate formation. In addition, the application of TBANO3 at 0.340 mass fraction, corresponding to TBANO3 · 32H2O, displayed promotion effect at lower pressures (below 6.38 MPa) and inhibition effect at higher pressures (above 6.38 MPa).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 68, January 2014, Pages 322–326
نویسندگان
, , ,