FIELD: technology of removal of corrosive components from liquid flow. SUBSTANCE: method includes stages of introduction of liquid initial flow at elevated temperature in contact with extractant, passing of obtained mixture through extraction cylindrical zone in counterflow, separation of extraction product and return of extractant. Noncorrosive liquid is directed along cylindrical extraction zone. Mixture from reaction zone is cooled near outlet hole by its introduction in contact with cooling substance, and cooled mixture leaving extraction zone is combined with noncorrosive liquid. Obtained outcoming flow is cooled before separation. The device for realization of claimed method is also offered. EFFECT: low cost of process due to abandoning of use of special corrosive inhibitor. 9 cl, 1 dwg, 2 tbl, 2 ex
