It was found that the equilibrium isotherms of the adsorption of sulfur compounds and resins by activated carbon from pyrolysis gasoline have an unusual, S-shaped profile. It is this character that has been proven to be responsible for the unfeasibility of pyrolysis gasoline cleaning of resins and sulfur compounds to a high degree (> 80%). The kinetics of the process was studied, and the experimental data were processed with the external mass transfer kinetic equation.