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Energy saving in carbon dioxide hydrate formation process using Boehmite nanoparticles
Vahab Montazeri,Masoud Rahimi,Bahman ZareNezhad 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.11
This work reports on an attempt to save energy in the carbon dioxide hydrate formation process. The kinetics of carbon dioxide hydrate formation induced by synthesized Boehmite (AlOOH) nanoparticles was investigated at 274.15 K, different initial pressures (29, 32 and 35 bar), impeller speed (50, 100 and 200 rpm) and AlOOH concentrations (25, 50 75, 100, 200 ppm). It was also observed that there is a desirable concentration for AlOOH nanoparticles in which the maximum rate of gas consumption and minimum growth and induction time was obtained. According to the results at 29 bar and 100 rpm and in the presence of 50 ppm AlOOH, the gas consumption rate increased to 150%, while the induction time and growth time decreased about 82.8% and 46.1%, respectively. The maximum energy saving of 49.7% for 50 ppm AlOOH was observed, which is very important for industrial applications of carbon dioxide hydrate. The presented technique is useful for intensification of gas hydrate-based CO2 capture processes in the oil and gas industry with minimum energy consumption.