CAJ | 학술논문

介绍了双加压法硝酸装置低压反应水冷器的运行工况及特性，分析了水冷器腐蚀的原因主要为温差应力腐蚀、高温冷凝稀硝酸冲刷和Cl-聚集的应力腐蚀。针对腐蚀原因，提出了采用内孔焊先进制造工艺、改变设备布置形式等优化改造措施，能够有效解决目前存在易腐蚀的问题。
개소료쌍가압법초산장치저압반응수랭기적운행공황급특성，분석료수랭기부식적원인주요위온차응력부식、고온냉응희초산충쇄화Cl-취집적응력부식。침대부식원인，제출료채용내공한선진제조공예、개변설비포치형식등우화개조조시，능구유효해결목전존재역부식적문제。
The operation conditions and characteristics of low-pressure reactor water cooler for nitric acid unit is introduced , and the causes for corrosion of the water cooler is analyzed , they are differential temperature stress corrosion , high temperature condense dilute nitric acid erosion and stress corrosion of Cl - gathering .Based on corrosion causes , optimization and renovation measures are proposed , including using advanced inner hole welding technology , changing layout of equipment and so on, these can solved corrosion problems effectively .