Abstract:

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.

Key words: quench oil dilution steam generator')">

quench oil dilution steam generator, internal leakage, causal analysis, measure