氯气冷凝器腐蚀的ICT研究

应用工业计算机断层扫描成像(ICT)技术研究了某厂氯气冷凝器管板、列管以及焊接处的腐蚀情况.ICT用于腐蚀研究，不仅可以探测出材料中腐蚀裂纹、孔隙等缺陷的有无，还能对它们的大小、形状以及空间位置作出定量的评价.ICT扫描分析结果表明，在列管、管板和焊材的结合区域腐蚀最为严重，盐水侧的管板腐蚀呈蜂窝状，而液氯侧的孔蚀较盐水侧严重.ICT技术可有效地评价材料的腐蚀.

CORROSION OF CHLORINE CONDENSER STUDIED BY ICT

The corrosion of tubes and tube sheets for a chlorine gas condenser in a chemical plant was studied using industrial computer tomography(ICT).ICT can not only detect whether are there gaps or interstices,but also quantitatively describe their size,shape and position.The ICT scan results indicated that the joint zone of the condenser baffle,condenser tubes and the welds are the sites suffered from serious corrosion damage.The condenser baffle in the side of brine presents a honeycombed surface and the pitting corrosion in the side of chlorine is much serious than that in the side of brine.ICT can effectively evaluate the corrosion of materials.