An energy cost minimizing strategy for fermentation dissolved oxygen control
An energy cost minimizing strategy for fermentation dissolved oxygen control
复制标题
发酵溶解氧控制的能源成本最小化策略
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
E. I. Kao
中科院分区：
文献类型：
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作者：
R. Shields;E. I. Kao
建立了基于搅拌速度和曝气速率的溶解氧在线控制的成本最小化数学模型。在肉桂链霉菌发酵莫能菌素的中试过程中，该算法将溶解氧稳定控制在40%，减少了27.8%的能量消耗。该算法提供的搅拌和曝气曲线代表了在所需溶解氧水平下控制能量成本最小的路径。其他观察到的双变量控制的优点是减少泡沫、蒸发和气含率。由于负荷的减少，压缩机和搅拌器电机的维护也会减少。然而，在溶解氧控制策略下，莫能菌素的产率降低了14.8%。
A cost-minimizing mathematical model for on-line control of dissolved oxygen using agitation speed and aeration rate was developed. In pilot scale monensin fermentation using Streptomyces cinnamonensis, this algortihm provided stable control of dissolved oxygen at 40%, reducing energy usage 27.8%. The agitation and aeration profiles provided by the algorithm respresent the pathway of least energy cost for control at the desired dissolved oxygen level. Other observed advantages of bivariable control were reduction of foaming, evaporation, and gas holdup. Reduced maintenance of compressors and agitator motors could also be expected due to decreased load. Monensin productivity equivalent to fermentation with constant agitation and aeration was not obtained, however, with potency reduced 14.8% with the dissolved oxygen control strategy.