Platov South Russian State Polytechnic University (Novocherkassk, Russia):

E. A. Yatsenko, Dr. Eng., Prof., Head of “General Chemistry and Technology of Silicates” Dept., e-mail: e_yatsenko@mail.ru
A. V. Ryabova, Cand. Eng., Associate Prof., “General Chemistry and Technology of Silicates” Dept., e-mail: annet20002006@yandex.ru
B. M. Goltsman, Cand. Eng., Associate Prof., “General Chemistry and Technology of Silicates” Dept., e-mail: boriuspost@gmail.com

Petroleum is one of the most important materials of our time. Its extraction and transportation is carried out using pipelines, most often steel. During operation, pipelines are exposed to the negative effects of petroleum from the inside and the environment (soil, groundwater) from the outside. The protection of pipelines using silicate materials is the most promising. These materials have a unique set of properties: durability, complete fire safety, resistance to all chemical and biological infl uences, wide temperature range of operation, etc. To protect the inner surface, compositions of single-layer glass enamels were developed, their firing was carried out, the enamels obtained were applied to steel samples, they were fired and the main technological and technical-operational properties were determined: adhesion strength, flowability, gloss, number of defects and chemical resistance. According to the results of the research, the optimal composition was chosen. For the external protection of pipelines, foam glass compositions were developed for foaming by the hydration mechanism due to the interaction of an alkali solution with amorphous silica. As a result, gel-like sodium hydrosilicates (water glass) are formed, the heating of which leads to foaming with the formation of cellular glass using a single-stage technology. The developed compositions were subjected to heat treatment, after which their technological properties (average density, total porosity). The use of synthesized silicate materials will increase the reliability and durability of the oil pipeline system, as well as reduce costs during its operation.
The work has been executed in YuRGPU with fi nancial support of the Russian scientifi c fund within the framework of the agreement No. 18-19-00455 «Development of the technology for complex protection of oil and gas pipelines working in the conditions of the Far East of Russia» (the head — Yatsenko E. A).

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