关键词: C₈芳烃, 异构体, 二甲苯, 吸附分离, 吸附平衡, 传质系数

Abstract: The adsorption properties of toluene and C₈ aromatics isomers on KBaX and NaY adsorbents were studied. The adsorption equilibrium parameters C₈ aromatics isomers on the adsorbents were determined by static equilibrium test. The changes of saturated adsorption capacity and relative selectivity coefficient with temperature and component composition were analyzed, including the saturable adsorption capacity and relative selectivity coefficient. At the same time, a dynamic penetration test was used for measuring and calculating the mass transfer coefficients, and the mass transfer coefficients were calculated by fitting the penetration test data with Aspen software. The results show that the adsorption performance parameters measured by the test are in good agreement with the simulation results, and the reliability of the adsorption performance parameters measured by the test is good.

Key words: C₈ aromatics, isomer, xylene, adsorption separation, adsorption equilibrium, mass transfer coefficient