STUDY OF MATERIALS CORROSION RESISTANCE CHARACTERISTIC DURING ACETATE PRODUCTION
The corrosion resistance behavior of 304, 316L stainless steel and Nicrofer Ni-Cr-Mo alloys was investigated in the simulation media of butyl acetate production. The results showed that 316L, alloy-31 and alloy-59 worked well under low-temperature process (< 95 oC), and had no obviously corrosive evidence, whereas the corrosion rate accelerated dramatically at hightemperature (> 105 oC), especially in the media of H2SO4-HAc, and the metal surfaces appeared black except alloy-59. The corrosion rate of 316L, alloy-31 and alloy-59 was 1.162, 0.1471, 0.0512 mm/a, respectively, in the the media consists of 1.0％wt. H2SO4, 60％ HAc, 30％ butyl acetate and 10％ H2O at 105 oC for 12 h. SEM analysis showed that 304, 316L was etched with obvious localized corrosion sites in the form of pits. Alloy 31 exhibited much slighter localized corrosion sites than 304, 316L, and alloy 59 was observed with almost no localized corrosion sites. This indicates that the localized corrosion resisitance of alloy-59 is superior to other alloys, and is a potential candidate to be applied to heat exchanger and other equipments during acetate production.
LIU Wen-bin WANG Jun QIU Qi-hao LI Wen-zhong MA Xin-peng
College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China
国际会议
第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)
北京
英文
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）