Abstract
1. A kinetic study has been made of the thermal desorption of C5-C8 n-paraffins from CaA and MgA zeolites at temperatures from 250 to 400°C. 2. It has been established that a temperature of 370–400°C in the desorption zone is necessary for complete desorption of n-paraffins from these zeolites. 3. At temperatures of 370–400°C, the n-paraffins are 90% desorbed within 20 min; at temperatures above 400°C, partial decomposition of the paraffinic hydrocarbons is observed. 4. A decrease in the dynamic adsorption activity of CaA and MgA zeolites in the separation of n-paraffins has been observed during the operation of a continuous pilot-plant unit; it has been shown that the working activity of the CaA zeolite is 80% and that of the MgA zeolite 85% of the respective initial activities.
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