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Development of superconducting high gradient magnetic separation system for scale removal from feed-water in thermal power plant
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 Title & Authors
Development of superconducting high gradient magnetic separation system for scale removal from feed-water in thermal power plant
Shibatani, Saori; Nakanishi, Motohiro; Mizuno, Nobumi; Mishima, Fumihito; Akiyama, Yoko; Okada, Hidehiko; Hirota, Noriyuki; Matsuura, Hideki; Maeda, Tatsumi; Shigemoto, Naoya; Nishijima, Shigehiro;
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 Abstract
A Superconducting High Gradient Magnetic Separation (HGMS) system is proposed for treatment of feed-water in thermal power plant [1]. This is a method to remove the iron scale from feed-water utilizing magnetic force. One of the issues for practical use of HGMS system is to extend continuous operation period. In this study, we designed the magnetic filters by particle trajectory simulation and HGMS experiments in order to solve this problem. As a result, the quantity of magnetite captured by each filter was equalized and filter blockage was prevented. A design method of the magnetic filter was proposed which is suitable for the long-term continuous scale removal in the feed-water system of the thermal power plant.
 Keywords
thermal power plant;scale removal;High Gradient Magnetic Separation (HGMS);solenoidal superconducting magnet;particle trajectory simulation;
 Language
English
 Cited by
 References
1.
N. Mizuno, F. Mishima, Y. Akiyama, H. Okada, N. Hirota, H. Matsuura, T. Maeda, N. Shigemoto, S. Nishijima "Removal of iron oxide with superconducting magnet high gradient magnetic separation from feed-water in thermal plant," IEEE Trans. Appl. Supercond., vol. 25, no. 3, Article #. 3700804, 2015.

2.
Japan Society of Thermophysical Properties: Thermophysical Properties Handbook, 2008

3.
S. Shibatani, et al. "Study on magnetic separation device for scale removal from feed-water in thermal power plant," IEEE Trans. Appl. Supercond., forthcoming.