The proposed invention relates to devices, which are used for conducting processes of mixing liquid STI with gas, their chemical interaction, as well as for of producing air - mechanical foam for fire extinguishing. This device can be used in oil refining, petrochemical, chemical, food, pharmaceutical, microbiological, metallurgical industry.Device for contact of gas with liquid styu has body, injection chamber, sprayer liquid STI, disperser, mixer. Sprayer is made in form of nozzles with radially - end redistribution flows and zavikhryayushchim insert in chamber twisting. Due to proposed device possibility of regulation of depth, width and length of radial slots with the possibility of preparing required intensity of axial flow and providing required distribution of liquid STI in torch.Effect of proposed utility model is the problems, associated with intensification the process of mixing phases in mixer. This the, sprayer that is made in form of nozzles with zavikhryayushchim insert in chamber twisting.So, device for contact of gas with liquid styu provides intensive mixing phases, application of pulsations and increases voltage shift on boundary of mixed phases, that allows to intensify the process mass transfer, due to increased surface contact of phases and speed of its update directly in mixer.