TITLE:
The Use of Models to Evaluate Corrosion Effects on Mild Steel Heat Exchanger in Water and Mono Ethanol Amine (MEA)
AUTHORS:
Ojong Elias Ojong, Jaja Zina, Wosu Chimene Omeke, Ana Anakri Ekpenyong, Dadet Wilson, Anaba Catherine Uloma, Emenike Aguma, Sedi Patrick, Forwah Jacques Ndeh
KEYWORDS:
Model, Corrosion Effect, Heat Exchanger, Simulation, Media, Mild Steel, Coupon
JOURNAL NAME:
Advances in Chemical Engineering and Science,
Vol.13 No.4,
October
18,
2023
ABSTRACT: Heat
exchanger is an important equipment used in
process industries for cooling and heating purposes. Its design
configuration which involves the flow of cold and hot fluids within the
exchanger subjects it to corrosion attack. The article utilized the principle of
mass and energy conservation in the development of weight and temperature
models to study the effect of corrosion on mild steel coupon inside the
exchanger containing water and Mono ethanol amine (MEA). The models developed were resolved analytically using
Laplace Transform and simulated using Excel as simulation tool and data
obtained from experiment in the laboratory to obtain profiles of weight loss
and temperature as a function of time. The weight loss and performance of mild steel under various
corrosive conditions were examined which indicates the effect of corrosion on
the mild steel heat exchanger in water and MEA media. The result shows that water is more corrosive than MEA at higher temperatures
and at lower temperatures of 35°C and 1 atm, MEA has inhibitive properties than water as
indicated by the weight loss result with time. The comparative analysis between the results
obtained from the model simulation and experimental results shows that the
result obtained from the model is more reliable and demonstrated better
performance characteristics as it clearly shows mild steel heat exchanger
experiences more corrosive effect in water medium than MEA at higher temperatures. And at lower temperatures, MEA becomes more
inhibitive and less corrosive than water. The model simulation results correlate with various
literatures and hence, it is valid for future referencing.