New designed TSA bed with cooling jacket for purification and regeneration of benzene and toluene

摘要

This work presents a new design of a thermal swing adsorption (TSA) process cooling jacket installed, under the condition of operating the continuous two-bed TSA process. The new designed cooling jacketed TSA bed enhances the adsorption efficiency, as well as saves the consuming rates of purge gas consumption and regeneration energy compared with the previous TSA bed. The target species are benzene and toluene. As a result of dynamic simulations from start-up to cyclic steady state (CSS), the adsorption ratios are 96% for benzene and 100% for toluene in the cooling jacketed TSA bed, while the adsorption ratios are 82% for benzene and 98% for toluene in the previous two-step operating TSA bed.