열수송관에 연결된 에어벤트에 적용 가능한 부식 방지 방안
Corrosion Protective Method Applicable to Air Vent Connected with a Heat Transport Pipe
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
This study aimed to elucidate causes of corrosion of heat transport pipes and air vents installed under amanhole of heat transport facilities and suggest effective anticorrosive measures by applying paints oradhesive tapes. It was found that air vent corrosion was attributed to corrosion under insulation caused bythe inflow of water and the enrichment of chloride ions. The infiltrated water caused a hydrolysis of polyurethanefoam (PUF) insulation by concentrating chloride ions at the interface between a pipe and the PUF. As insulator deteriorated, more chloride ions were eluted as confirmed by ion chromatograph (IC) analysis. As an effective method to prevent air vent corrosion, different types of paints and adhesive tapes withhigher corrosion resistance on chloride ions were applied and environmental resistance tests were performedwith those samples. Based on environmental test results of samples exposed to 10% HCl solution,it was revealed that a wax tape was the most adequate from a viewpoint of stability at operating condition,environmental resistance, surface treatment, and field applicability.
Abstract
This study aimed to elucidate causes of corrosion of heat transport pipes and air vents installed under amanhole of heat transport facilities and suggest effective anticorrosive measures by applying paints oradhesive tapes. It was found that air vent corrosion was attributed to corrosion under insulation caused bythe inflow of water and the enrichment of chloride ions. The infiltrated water caused a hydrolysis of polyurethanefoam (PUF) insulation by concentrating chloride ions at the interface between a pipe and the PUF. As insulator deteriorated, more chloride ions were eluted as confirmed by ion chromatograph (IC) analysis. As an effective method to prevent air vent corrosion, different types of paints and adhesive tapes withhigher corrosion resistance on chloride ions were applied and environmental resistance tests were performedwith those samples. Based on environmental test results of samples exposed to 10% HCl solution,it was revealed that a wax tape was the most adequate from a viewpoint of stability at operating condition,environmental resistance, surface treatment, and field applicability.
참고문헌 (13)
- Jooyong Kim, "Effect of operating temperature conditions in 21-year-old insulated pipe for a district heating network", Case Studies in Thermal Engineering, 27, pp.101265~ (2021), Elsevier BV[DOI]
- Lucía Doyle, "Effects of thermal and mechanical cyclic loads on polyurethane pre‐insulated pipes", Fatigue & Fracture of Engineering Materials & Structures, 44(1), pp.156~168 (2020), Wiley[DOI]
- 이형준, "지역난방수 공급관 에어벤트 부식 파손 분석", CORROSION SCIENCE AND TECHNOLOGY, 19(4), pp.189~195 (2020), 한국부식방식학회[DOI]
- 조정민, "맨홀에 설치된 지역난방 열공급관 에어벤트의 전단부 파손 원인 규명", CORROSION SCIENCE AND TECHNOLOGY, 19(4), pp.196~202 (2020), 한국부식방식학회[DOI]
- 김유섭, "지역난방 열수송관 국부 부식 파손 분석", CORROSION SCIENCE AND TECHNOLOGY, 19(3), pp.122~130 (2020), 한국부식방식학회[DOI]
- 김형석, "지역난방 열배관망 운영데이터 기반의 파손확률 모델 개발", Korean Chemical Engineering Research(HWAHAK KONGHAK), 55(3), pp.322~331 (2017), 한국화학공학회
- 송희봉, "대구지역의 빗물 중 화학적 성분의 계절별 및 지역별 농도분포", 대한환경공학회지, 28(5), pp.522~526 (2006), 대한환경공학회
- Goo-Bok Jung, "Wet Deposition of Heavy metals in Suwon Area", Korean Journal of Environmental Agriculture, 26(2), pp.116~123 (2007), The Korean Society of Environmental Agriculture[DOI]
- Yarong Song, "Effects of chloride ions on corrosion of ductile iron and carbon steel in soil environments", Scientific Reports, 7(1) (2017), Springer Science and Business Media LLC[DOI]
- Qing Cao, "A Review of Corrosion under Insulation: A Critical Issue in the Oil and Gas Industry", Metals, 12(4), pp.561~ (2022), MDPI AG[DOI]
- S. Hœrlé, "Advances in understanding atmospheric corrosion of iron. II. Mechanistic modelling of wet–dry cycles", Corrosion Science, 46(6), pp.1431~1465 (2004), Elsevier BV[DOI]
- E. D. Mackey, "Guidelines for using stainless steel in the water and desalination industries", Journal American Water Works Association, 5, pp.158~ (2017)[DOI]
- Seon-Hong Kim, "Effect of the Crevice Former on the Corrosion Behavior of 316L Stainless Steel in Chloride-Containing Synthetic Tap Water", Metals and Materials International, 24(3), pp.516~524 (2018), 대한금속·재료학회[DOI]