Study of conditions of desorption of C10-C19 n-alkanes from MgA zeolite

Abstract

1. The effect of desorbent composition, temperature, pressure, length of sorption cycle, charge of unit with raw material, and rate of desorbing agent on the dynamic activity of MgA zeolite was studied on a pilot unit having an adsorbent layer height of 12.5 m. 2. It was established that in a broad interval of change in conditions of carrying out the process the dependence of specific consumption of desorbent on length of desorption is kept linear. An empirical equation is proposed for the dynamics of displacement desorption of n-alkanes from synthetic MgA zeolites. 3. It was shown that a decrease in n-alkane concentration in desorbent (less than 60%) leads to a sharp decrease in rate of desorption and cannot be compensated for by an increase in total pressure in the system. 4. An increase in rate of desorbent decreases its specific consumption at a low degree of desorption and increases it at a large degree of desorption. At an average time of desorption (in our case 20 min) a change in rate of desorbent does not affect its specific consumption.