하수슬러지-(SO2-O2-H2O-bal. CO2) 혼합 가스 분위기에서 Fe-Cr 강의 고온부식거동 연구
Study of High Temperature Corrosion Behavior of Fe-Cr steel in Sewage Sludge-(SO2-O2-H2O-bal. CO2) mixed Gas Environment
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Two Fe-Cr steels of T22 steel and STS430 steel were corroded at 650 and 750 oC for 100hr in sewage sludge-(0.3% SO2-6% O2-10% H2O-balance CO2) mixed gas environment. T22 steel corroded faster than STS430, indicating that the Cr content significantly influence the corrosion rates. T22 formed thick and non-protective Fe2O3 as the major oxide and Fe3O4 as the minor one. With an increase in corrosion temperature, their corrosion rates increased, being accompanied with formation of pores and cracks in the thickened oxide scales that were non-adherent. STS430 steel formed Fe2O3, Fe3O4 as the outer scale and (Fe, Cr)-O as the inner layer by which its corrosion rate is greatly reduced. Both the T22 and STS430 steel samples formed multi-layered scales by outward diffusion of Fe ions and inward diffusion of oxygen and sulfur ions at high-temperature more than 650 oC.
Abstract
Two Fe-Cr steels of T22 steel and STS430 steel were corroded at 650 and 750 oC for 100hr in sewage sludge-(0.3% SO2-6% O2-10% H2O-balance CO2) mixed gas environment. T22 steel corroded faster than STS430, indicating that the Cr content significantly influence the corrosion rates. T22 formed thick and non-protective Fe2O3 as the major oxide and Fe3O4 as the minor one. With an increase in corrosion temperature, their corrosion rates increased, being accompanied with formation of pores and cracks in the thickened oxide scales that were non-adherent. STS430 steel formed Fe2O3, Fe3O4 as the outer scale and (Fe, Cr)-O as the inner layer by which its corrosion rate is greatly reduced. Both the T22 and STS430 steel samples formed multi-layered scales by outward diffusion of Fe ions and inward diffusion of oxygen and sulfur ions at high-temperature more than 650 oC.
참고문헌 (22)
- D. Philippe, "Austenitic steel corrosion in IGCC environment : Characterisation by photon and nuclear microprobes", Nucl. Instr. Meth. A, 181, pp.734~738 (2001)
- G. G. Olkhovskii, "Solid fuel gasification in the global energy sector(a review)", Ther. Eng, 62, pp.465~472 (2015)
- 채태영, "80 kWth급 미분탄 연소 시스템에서 하수슬러지 혼소시 연소 특성 연구", Clean Technology, 25(1), pp.74~80 (2019), 한국청정기술학회
- E. K. Hong, "A study on evaluation of boiler thermal performance change characteristics with sewage sludge combustion on coal fired power plant", Conf. Proc. Kor. Soc. Energy Eng., pp.139~144 (2010)
- A. Holt, "High temperature corrosion of iron in O2+4% SO2", SO3 at 500–800°C, 1989, pp.120–121, 101~104
- W. Wu, "High Temperature Corrosion of Advanced Materials and Protective Coatings", pp.301~307 (1992), North Holland
- 정광후, "SO2 가스 환경 하에서 1.25Cr-0.5Mo 강의 부식 및 강도 저하 특성", 한국표면공학회지, 51(3), pp.149~156 (2018), 한국표면공학회[DOI]
- H. Kassman, "The importance of SO2 and SO3 for sulphation of gaseous KCl-an experimental investigation in a biomass fired CFB boiler", Combust Flame, 157, pp.1649~1657 (2010)
- J. Pettersson, "The influence of sulphur additions on the corrosive environment in a waste-fired CFB boiler", Mater. Sci. Forum, pp.563~570 (2006)
- B. A pint, "The oxidation mechanism of Al2O3 scales", Solid State Ionics, 78, pp.99~107 (1995)
- Y. F. Zhou, "Recycling incinerated sewage sludge ash(ISSA)as a cementitious binder by lime activation", J. Cleaner Prod, 244, pp.1~9 (2020)
- H. H. Lee, "A study on the non-heating cement to solidify sewage sludge with by-products of Iron & steel work", RIST research report, 16, pp.147~154 (2002)
- A. Yousef, "The effect of co-firing sewage sludge with used wood on the corrosion of an FeCrAl alloy and a nickelbased alloy in the furnace region", Fuel Proc. Tech, 138, pp.805~813 (2015)
- S. Karlsson, "Reducing high-temperature corrosion on high-alloyed stainless steel superheaters by co-combustion of municipal sewage sludge in a fluidised bed boiler", Fuel, 139, pp.482~493 (2015)
- 김홍표, "스테인리스강 입계부식", CORROSION SCIENCE AND TECHNOLOGY, 17(4), pp.183~192 (2018), 한국부식방식학회[DOI]
- H. J. Jang, "Effects of alloying elements on the corrosion resistance of (16~19)Cr ferritic cast stainless steel for automotive exhaust parts", Conf. Proc. Kor. Soc. Automotive Eng., pp.19~25 (2011)
- 이소영, "열화한 STS316L에 대한 Cr-free 코팅액의 내식특성", 한국해양공학회지, 29(6), pp.475~480 (2015), 한국해양공학회
- "Technical Committee ISO", TC 156, Corrosion of metals and alloys -Method for metallographic examination of samples after exposure to hightemperature corrosive environments, 2012
- 김슬기, "Fe합금의 내 산화성과 황화성에 미치는 Al과 Cr 함량의 영향", 한국표면공학회지, 45(2), pp.61~69 (2012), 한국표면공학회[DOI]
- D. Young, "High Temperature Oxidation, and Corrosion of Metals" (2008), Elsevier
- N. Birks, "Introduction to High Temperature Oxidation of Metals" (2006), Cambridge Univ.
- A. S. Khanna, "Introduction to high temperature oxidation and corrosion" (2002)