The technological scheme of the installation for the adsorption separation of n-C₅–n-C₈ hydrocarbons from low octane number condensate gasoline and catalytic isomerization of them to increase the octane number of fuel without loss of raw materials. To achieve this goal investigated the influence of technological parameters (temperature, volume flow rate of raw material, isomerization reactor pressure, activity and porosity of the adsorbent – CaA, ratio of hydrogen and n-paraffin) on the adsorption, desorption, isomerization processes of n-C₅–n-C₈ hydrocarbon. Established experimental conditions for high-purity desorption and the maximum degree of isomerization of the investigated hydrocarbons