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Explain why the pump for the deethanized gasoline at the bottom of the fractionation tower and the pump for the feed condensate oil to the fractionation tower share the same pump
This design is typically adopted because the two pumps are required to operate at different times, while also helping to save on equipment costs and space. It can be seen that the operating times of the deethanized gasoline pump at the bottom of the separation tower and the feed condensate oil pump of the separation tower do not overlap; when one pump is in operation, the other does not need to be in operation. Therefore, a single pump can be used, which helps to save costs and space. At the same time, this design also needs to take into account the operation and maintenance management of the pump. .
Thank you for your answer, but I still have two questions: 1. At the beginning of operation, when the pressure in the stripping tower has not yet been established and deethanized gasoline is used as feed to the stabilizing tower, should this pump be used as a feed pump for the stripping tower or for the stabilizing tower? Or dual-pump operation? 2. During normal production, the deethanized gasoline is drawn from the bottom of the auto-destillation tower and sent under its own pressure to the stabilizer as feed. In an emergency situation, with one pump in operation and one as a backup, should the backup pump serve as a backup for the condensed oil or for the deethanized gasoline?