Mechanism оf Protective Action оf Some Surfactants іn the Network Water оf Centralized Heat Supply Systems
Journal Title: Вентиляція, освітлення та теплогазопостачання - Year 2018, Vol 26, Issue
Abstract
Тhe problem of controlling scale formation and corrosion is very acute and relevant for heat power engineering. Particularly acute problem is in centralized heat supply systems in the cities of Eastern Europe and the former Union of Soviet Socialist Republics. Traditional methods of controlling scale formation and corrosion to date are not satisfactory by the operating organizations for many reasons, including from an economic point of view. One of the promising new methods for controlling corrosion and scale formation is the modification of network water by the addition of surfactants (surfactants). There are many surfactants of different chemical nature. Some of them are well used in the fight against scale formation, others with corrosion. Among them there is a narrow class, which can be used simultaneously and against scale formation and corrosion. The Department of Heating Engineering is investigating the effect of such surfactants. In the course of the investigations, a new mechanism for the operation of such surfactants, described in this article, was recorded for the first time. The data obtained during the staging experiments and their analysis shows that the influence of the surfactants chosen by the authors is to ensure the protection of the heating surfaces and the corrosion-resistant PVC pipelines. The analysis of the processes leading to a positive effect shows that the effect of esters of fatty organic acids has a double effect - firstly, the well-known effect of the formation of the "palm of Langmuir", and the second formation under it of the second protective layer - films of iron oxide Fe3O4, which, when it The dense structure further protects the metal surface from dissolved oxygen in water. The authors developed a further program of conducting experimental research in order to reach the development of technological regulations for the treatment of network water of district heating systems with surfactants
Authors and Affiliations
P. Glamazdin, E. Davydenko, V. Vitkovskyi
Keywords
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