Animal Fats and Vegetable Oils—Promising Resources for Obtaining Effective Corrosion Inhibitors for Oil Refinery Equipment

Serhiy Pyshyev (), Oleksandr Romanchuk, Petro Topilnytskyy, Viktoriya Romanchuk, Denis Miroshnichenko, Yurii Rohovyi, Hennadii Omelianchuk and Yurii Parkhomov
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Serhiy Pyshyev: The Department of Chemical Technology of Oil and Gas Processing, Lviv Polytechnic National University, 79013 Lviv, Ukraine
Oleksandr Romanchuk: The Department of Chemical Technology of Oil and Gas Processing, Lviv Polytechnic National University, 79013 Lviv, Ukraine
Petro Topilnytskyy: The Department of Chemical Technology of Oil and Gas Processing, Lviv Polytechnic National University, 79013 Lviv, Ukraine
Viktoriya Romanchuk: The Department of Chemical Technology of Oil and Gas Processing, Lviv Polytechnic National University, 79013 Lviv, Ukraine
Denis Miroshnichenko: The Department of Oil, Gas and Solid Fuel Refining Technologies, National Technical University “Kharkiv Polytechnic Institute”, 61002 Kharkiv, Ukraine
Yurii Rohovyi: The Department of Oil, Gas and Solid Fuel Refining Technologies, National Technical University “Kharkiv Polytechnic Institute”, 61002 Kharkiv, Ukraine
Hennadii Omelianchuk: The Department of Oil, Gas and Solid Fuel Refining Technologies, National Technical University “Kharkiv Polytechnic Institute”, 61002 Kharkiv, Ukraine
Yurii Parkhomov: The Department of Oil, Gas and Solid Fuel Refining Technologies, National Technical University “Kharkiv Polytechnic Institute”, 61002 Kharkiv, Ukraine

Resources, 2025, vol. 14, issue 2, 1-19

Abstract: The equipment of refineries and oil production facilities is subject to corrosion due to the supply of crude oils with a high content of mineralized water. The use of inhibitors is one of the most common corrosion protection methods. However, increasing requirements of environmental standards give impetus to developing new types of corrosion inhibitors from natural raw materials. The article deals with the synthesis conditions of new corrosion inhibitors (CIs) produced from distilled higher acids of beef fat (DHFAs) or vegetable oils (VO), as well as research on the protective effect of the synthesized corrosion inhibitors compared with industrial inhibitors (5 samples). The gravimetric method studied the protective effect in a solution of salts and jet fuel using a St20 steel plate. At 50 °C and a CIs content of 100 ppm, the protective effect of corrosion inhibitors based on VO and triethanolamine was 9.7–75.6%. Under similar conditions, CIs obtained from DHFAs and diaminoethyl exhibited a protective effect of 81.6–94.1%. When DHFAs and diethanolamine were used to synthesize CIs, the protective effect was 93.0–95.6%. CI synthesized at 130 °C and a DHFAs: diethanolamine ratio of 72:28 showed a 99.2% protective effect at 50 °C and a CI content of 200 ppm, which was higher or equal to the impact of using industrial inhibitors (91.6–99.5%). The results prove the possibility of alternative use of animal fats and waste from their production as new resources for obtaining highly effective equipment corrosion inhibitors. Using alternative inexpensive raw materials (fats, vegetable oils, waste from their output) to obtain CIs will improve the economic performance of inhibitor production. In addition, at least the fatty (oil) part of organic CIs is biodegradable and will not harm the environment.

Keywords: biological resources; corrosion inhibitor; protective effect; higher fatty acids; vegetable oil (search for similar items in EconPapers)
JEL-codes: Q1 Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2025
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