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The dehydration tower of the ethylene glycol plant of the plant mainly dehydrates 60% of the crude ethylene glycol from the five-effect evaporator to 99% ethylene glycol. During the expansion of the device, the factory replaced the upper valve tray with corrugated structured packing, but the lower tray was not replaced, resulting in a large load on the bottom stripping section, resulting in increased instability of the tower, not only increasing The consumption of heating steam also indirectly caused the loss of ethylene glycol. For this reason, the plant has listed the dewatering tower transformation as an important research project of the year. Under the circumstances that the tower diameter and the tower height are unchanged, the internal tray is transformed into structured packing, which not only increases the processing volume, but also greatly improves the operational flexibility. Effectively reduces the consumption of heating steam. Practice shows that the pressure of the dewatering tower after the transformation is reduced and the operation is stable, and 0.5 tons of heating steam and more than 5 tons of wastewater can be saved per hour.
The ethylene glycol plant of Jilin Petrochemical Company implemented the reform of the dehydration tower of the ethylene glycol plant and received significant results. Only steam and desalinated water were saved, and the annual profit reached 86.4 million yuan.