The high pressure heat exchanger is one of the core equipment of the heavy oil hydrocracking unit,and the screw lock ring high pressure heat exchanger is the most widely used in this unit.The diameter above φ1 600 mm is a large diameter high-pressure heat exchanger,which has experienced internal leakage in some domestic oil refining units.The reason is mainly caused by the difference between the expansion of the inner part and the shell.It is necessary to upgrade the gasket and do a good job in maintenance control to ensure that the high pressure thread locking ring heat exchanger does not have internal leakage.
关键词
高压换热器/重油加氢/螺纹锁紧环换热器/膨胀差/双金属自密封波齿复合垫/力矩控制
Key words
high pressure heat exchanger/hydrogenation of heavy oil/screw locking ring heat exchanger/expansion difference/bimetal self-sealing wave tooth composite pad/moment control
维普
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