New conservation structures with safe corrosion inhibitor

AbstractCorrosion protection is relevant in developing methods for the design, construction and operation of onshore and offshore oil and gas pipelines, tank farms and oil pipelines and aimed at minimizing the risk of failure. Temporary corrosion protection tasks (conservation) successfully solved with the help of contact and volatile atmospheric corrosion inhibitors.Unfortunately, most inhibitors are derivatives of amines and nitrites, which are extremely dangerous chemicals for humans and the environment.It does not meet the modern requirementsof the industrial environment. Therefore it is necessary to lead the development of less hazardous means of preservation.We propose a corrosion inhibitor "FMT" fourth class of danger, the main active ingredientof which is copper complexes of chlorophyll needles. The results of studies of anti-corrosion and fungistatic properties of new compounds with conservation "FMT" to protect thesteel from atmospheric and microbiological"mushroom" corrosion.
Materials and methods
1. For preliminary evaluation of the protective properties of the method used for the deposition of copper ions have its salts from solutions, so-called "barrier" effect. The protective ability was evaluated by the formula?= ?/?`, where ? - braking rate of the process of deposition of copper on steel; ? — time to loss of copper on the surface of the steel ingibitirovannoy; ?` — the same for neingibitirovannoy surface. 2. To study the protective capabilities of preservatives used methods of accelerated corrosion tests in accordance with GOST9.054 humidistat in G-4 and salt fog chamber. 3. To study the properties of the fungistatic inhibitor "FMT" in relation to molds selected disk diffusion method.
Results
FMT corrosion inhibitor is compatible with various bases conservation compositions and may low concentrations to work efficiently in oils and fuels, as well as in water, where it forms a stable emulsion. FMT inhibitor is practically safe substance of class IV toxicity to humans and thus suppresses the ability of vital activity of fungi. This unusual property is connected with the peculiarities of its chemical composition: it contains complexes of copper and resin acids (rosin).
Сonclusions
FMT atmospheric corrosion inhibitor effectively protects the steel from electrochemical and microbiological "mushroom" corrosion and can be used as safe for humans and the environment of the universal additive for all types of foundations preservatives.In an experimental investigation, "FMT" is recommended for a wide range of practical problems of conservation storage equipment, transportation of oil and gas, as well as equipment engineering, power engineering, oil refining and other metal-intensive industries of modern technology.