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Information × Registration Number 0216U000785, 0115U004010 , R & D reports Title Development of synthesis technology and production of pilot batch of corrosion and salt incrustation inhibitors, based on waste recycling of wood working industry and their introduction for the increase of heat-exchange equipment life time popup.stage_title Head Slobodjan Zvenomyra, Registration Date 03-03-2016 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 Three methods of extraction of active constituents from a bark and shaving of oak are developed. It is rotined, that extracts of the oak shaving and sinergistical compositions on their basis by the reveals inhibitors of the mixed action with the predominating braking of cathode reaction, that protect the medium-carbon steels against corrosion in water by 80…95%. Composition TIS, containing inorganic and organic synergists, is the most effective inhibitor. It is shown by electrochemical investigation that under the influence of those inhibitors chemisorption film is formed on the metal surface, which provides an increase of polarization resistance, transfer charge resistance, activation energy of corrosion and retarding of both cathode and anode electrode reactions. The developed compositions are the inhibitors of mixed action and are effective in the medium-hardness water. It was established that extracts of waste products of processing of oak (chip, bark) and synergetic compositions on their base are the corrosion inhibitors of medium-carbon steels not only in neutral but in acid solutions. Efficiency of those extracts (0,8 g/l ) in 5% HCl is more than 90%. Methods and extracts received from waste recycling birch, pine (spruce) also are developed. These extracts at a concentration of 0.8 g/l protect the medium-carbon steels against corrosion in neutral environments by 70…80%, which is comparable to the efficiency of oak extracts it was established. The degree of corrosion protection increases with exposure time. Technologic regulations of synergetic composition TIS synthesis on the base of wast products treatment was developed. The technological scheme of synthesis, the base characteristics of expedable materials was prorosed, semiproducts and products, the sequence of stages, base rules of safe process driving was described, working expenses of reagents for 1t of inhibitor, material balance was calculated, specification of equipments was proposed. Practical approbation of the technology of synergetic composition TIS synthesis was carrying out. Obtained products were industrially tested in the conditions of acid-inhibitor cleaning of the heat engineering equipments from salt incrustation and corrosion products and introduced in 2014 at Rozhyshchenska branch of "Terra Food" Ltd. Product Description popup.authors Купович Рома Богданівна Маглатюк Людмила Анатоліївна Сагаль Іван Олексійович Хабурський Ярослав Мирославович popup.nrat_date 2020-04-02 Close