Open AccessAn Overview of Ammonium Chloride (NH4Cl) Corrosion in the Refining Unit
Author(s) -
K.V Akpanyung,
Roland Tolulope Loto,
M. A. Fajobi
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1378/2/022089
Subject(s) - corrosion , refinery , refining (metallurgy) , ammonium chloride , chloride , piping , ammonium , fouling , chemistry , distillation , materials science , waste management , metallurgy , inorganic chemistry , environmental science , environmental engineering , engineering , organic chemistry , membrane , biochemistry
Ammonium chloride is a destructive agent of localized corrosion which poses devastating threat to refining structure integrity and the safety of the refinery processes. Ammonium chloride is an underdeposit corrosion commonly found in overhead equipment and piping for crude and hydroprocessing units. This form of insidious form of corrosion had caused severe fouling that posed negative impact on the operating reliability of various processing units. This review addresses the corrosion mechanism of ammonium chloride, affected materials and equipment, Environmental factors for its impact, thermodynamic behavior of a wet ammonium chloride system, some case studies of ammonium chloride and the preventive measures to mitigate its effect.