急冷油稀释蒸汽发生器内漏原因分析及应对措施

乙烯装置急冷油稀释蒸汽发生器用于回收急冷油中的热量,以产生的稀释蒸汽供裂解炉使用,减少外补中压蒸汽,降低装置的能耗.急冷油稀释蒸汽发生器一旦发生内漏,急冷油会漏进工艺水中,导致稀释蒸汽发生系统被污染,影响装置的平稳生产,严重时装置被迫停车处理.通过对茂名2号乙烯装置急冷油稀释蒸汽发生器发生内漏的原因进行分析,提出相应的...

CAUSE ANALYSIS AND COUNTERMEASURES FOR INTERNAL LEAKAGE OF QUENCH OIL DILUTION STEAM GENERATOR

Quench oil dilution steam generator in ethylene plant is used to recover the heat in quench oil to produce dilution steam(DS)for use in cracking furnace,so as to reduce the external supply of medium pressure steam and reduce the energy consumption of the plant.In case of internal leakage of quench oil dilution steam generator,the quench oil will leak into the process water,resulting in the pollution of the dilution steam generator and affecting the stable production of the plant.In serious cases,the plant will be forced to shut down for treatment.In this paper,the causes of internal leakage of the quench oil dilution steam generator in the No.2 ethylene plant in Maoming are analyzed,some corresponding measures are put forward to prevent internal leakage,and some countermeasures for the internal leakage of heat exchanger are proposed.