Open AccessRemoval of Scale from Feed-water in Thermal Power Plant by Magnetic Separation -Analysis of Oxygenated Treatment Scale-
Author(s) -
Mami Hiramatsu,
Junya Yamamoto,
Yoko Akiyama,
Fumihito Mishima,
Shigehiro Nishijima,
Hidehiko Okada,
Noriyuki Hirota,
Tsuyoshi Yamaji,
Hideki Matsuura,
Seitoku Namba,
Tomoko Sekine,
Yashiko Kobayashi,
Michael C. Seto
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 - 10.1088/1742-6596/1293/1/012079
Subject(s) - magnetic separation , magnet , materials science , thermal power station , thermal , water treatment , scale (ratio) , homogeneous , environmental science , nuclear engineering , environmental engineering , waste management , metallurgy , electrical engineering , engineering , thermodynamics , physics , quantum mechanics
One of the reasons of the deterioration of the power generation efficiency of the thermal power generation is the adhesion of the iron scale generated by the corrosion of the pipe to the inner wall of the feed-water system. Focusing on the magnetic property of scale, we studied on the removal of scales in the feed-water system by high gradient magnetic separation (HGMS) using the superconducting magnet. In this study, we targeted the thermal power plants adopting oxygenated treatment (OT). In order to determine the installation site and the magnetic separation condition of the HGMS system, we analyzed the OT scale and then clarified the aggregation/composite states by magnetic separation experiment. It is concluded that low-pressure feed-water heater drain is suitable for installation site of HGMS system. In addition, it was clarified that homogeneous aggregation particles existed in the OT scale.