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Improvement of Cooling Water Quality by Corrosion and Scale Inhibitor

부식 및 스케일 억제제에 의한 냉각수 수질향상

  • Jo, Kwan-Hyung (Department of Civil and Environmental Engineering, Chungwoon University) ;
  • Woo, Dal-Sik (Water Environment Laboratory, Korea Interfacial Science and Engineering Institute) ;
  • Hwang, Byung-Gi (Division of Civil and Environmental Engineering, Sangmyung University)
  • 조관형 (청운대학교 건설토목환경공학과) ;
  • 우달식 (한국계면공학연구소 물환경연구실) ;
  • 황병기 (상명대학교 토목환경공학부)
  • Published : 2009.02.28

Abstract

This study was investigated to control the corrosion and scale at the cooling water system in steel works. Laboratory and field tests were performed for the indirect cooling water system of plate mill. Throughout the experiment, various factors such as leakage of pipes, heating rate and capacity, and the reaction between existing and substitute inhibitors were carefully monitored. The results showed that the harmful effect of high temperature could be minimized, and satisfactory corrosion/scale controls were effectively achieved using inhibitor, even at the increased temperature of $80^{\circ}C$. The batch and field tests in the gas scrubbing cooling water system of blast furnace and cooling water system of corex plant indicated that the new inhibitor was more effective for the prevention of corrosion and scale than the existing one.

Keywords

Corrosion;Scale;Reduction;Cooling water;Steel mill

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