Mechanical defoaming and reflux integrated device for large oxytetracycline fermentation tank

Abstract

This invention relates to the technical field of mechanical defoaming and reflux devices for fermenters, specifically to an integrated mechanical defoaming and reflux device for large-scale oxytetracycline fermenters. The device includes a main fermenter body with an insulation and heating layer on its outer side. Inside the main fermenter body are multiple layers of combined paddles and gas injection pipes. At the top of the main fermenter body, a funnel-shaped collecting section, a mid-section rising film separator, and a defoaming tank are sequentially connected and fixed. The mid-section rising film separator is a tall, slender, vertical tower structure, forming an active foam suction rising film channel. This invention constructs a foam suction rising film channel by setting a tall, slender, vertical mid-section rising film separator at the top of the main fermenter. Unlike the traditional passive foam overflow defoaming mode in fermenters, this invention utilizes the rising film airflow acceleration and the suction force of the tall tower chimney to achieve active foam transport and pre-defoaming, thereby reducing the back pressure of the main tank and increasing the aeration rate and dissolved oxygen mass transfer efficiency, thus improving the fermenter filling coefficient and production utilization rate.

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