Abstract: The present research considers influence of water concentration on adsorption process. It is proved that adsorption takes place due to molecular gate properties of KACO zeolite and KACO zeolite adsorption efficiency depends on water concentration. The concentration degree is statistically discovered. If water concentration in ethyl alcohol exceeds 10%, the phenomenon of alkaline formation is observed. Zeolite is regenerated at 300-350°C. The obtained data were verified by series of tests with the varying water concentration. On the basis of the conducted research alcohol liquid desiccation units for wells and main compressor stations are offered.