For a penopodavleniye in installations of the slowed-down coking of oil residues it is offered to use an acoustic way with formation of the pulse pulsing movement of the gas environment with formation of the acoustic field of high intensity directly in the place of formation of foam. It excludes violation of sterility of the final product. Theoretical justifica- tion of formation of the acoustic field at a resonance of his parameters with acoustic characteristics of foamy elements is presented. Results of laboratory researches of a penopodavleniye on cold model which have shown a possibility of compulsory destruction of foam in the field of acoustic vibrations by intensity to 120 dB are presented. Pilot studies on hot model of the slowed-down coking of oil residues have allowed to establish a steady possibility of destruction of foamy elements without direct contact with the processed material.