[en] The results are given of washing heat-exchange equipment with aqueous solutions of purified 'black' acid. Almost complete removal of carbonate scale is attained from the surface of heat exchangers made of stainless steel, carbon steel Ct20, and brass L-68. The corrosion rate of constructive materials is determined is static and dynamic conditions. Washing is performed by circulating the washing solution without heating
Original Title
Opyt primeneniya rastvorov ochishchennykh 'chernykh' kislot dlya udaleniya karbonatnykh nakipej s teploobmennogo oborudovaniya ustanovok VK-50 i Arbus