基于SWP-FJC控制的新霉素发酵补料系统的构建

Construction of the Feeding System of Neomycin Fermentation Based on SWP-FJC Control

以新霉素发酵过程微生物代谢特性的变化规律为依据,构建SWP-FJC专家系统,实现对发酵过程补糖、硫酸铵、Ph值、溶氧、温度的优化控制,达到提高产量和节能的目标。本控制系统采用工业控制计算机为上位机,具有实时数据采集、图表集成和控制参数给定等多项功能。每个发酵罐由SWP-FJC发酵专用控制器组成独立的控制单元,能适时、适量地控制发酵过程中的补糖、硫酸铵补料速率、同时实现对Ph值、溶氧、温度的控制,优化后的新霉素发酵效价从原有的10000u·ml-1提高到13000u·ml-1,发酵液残糖浓度由2.5-3.0%下降到1.3-1.5%,单位新霉素产量的淀粉单耗由18.5kg/十亿下降到13.4kg/十亿,COD排放量减少近50%,达到了清洁生产的目的。

Based on the variation rules of microbial metabolic characteristics in neomycin fermentation process,the SWP-FJC expert system is constructed to achieve the optimal control of sugar supplement,ammonium sulfate,Ph value,dissolved oxygen,and temperature in fermentation process in order to improve the yield and save energy.The control system adopts industrial control computer as the host computer,with multiple functions of real-time data acquisition,chart integration,control parameters given and so on.Each fermenter consisting of independent control units made up of SWP-FJC special controller is able to control sugar supplement and ammonium sulfate feeding rate in the fermentation process timely and appropriately,and to regulate Ph value,dissolved oxygen and temperature as well.Neomycin fermentation titer after optimization increases from the original10000u?ml-1to13000u?ml-1,the residual sugar concentration of fermentation liquid decreases from2.5-3.0%to1.3-1.5%,the starch consumption per unit neomycin yield drops from18.5kg per billion to13.4kg per billion,and the COD emission reduces by nearly50%achieving the purpose of clean production.