Maximum recovery of solvents during the shutdown of aromatic extraction units
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Currently, reprocessing is carried out in conjunction with liquid-liquid extraction or extraction distillation units; during shutdowns of these units, solvent recovery occurs in some of the pipelines. People mention the operating scale of their own units as **10,000 tons per year**, the amount of solvent that is recycled as **XX tons**, and the amount of solvent lost during each shutdown as **XX tons**. Do all the units have fresh solvent tanks and wet solvent tanks? How are these two tanks managed? Let’s discuss what measures are being taken to ensure that solvents can be recovered to the greatest extent possible during shutdowns. It is hoped that further optimization can be achieved in solvent recovery and the rational use of solvents!
During the shutdown process, the material is withdrawn and purged, then sealed and recovered into an underground tank before being pumped into the wet solvent tank. The fresh solvent tank is used to replenish the solvent consumed during operation.