A side stream is recycled to the external feed stream of the column through an equilibrator as an internal feed stream . the simulation results indicate effects on the characteristics of cryogenic distillation column . consideration is given to the behavior and characteristics of the set of ordinary differential equations 3 、分析了浓度极稀物系动态精馏模型的特点，建立了此类物系动态模型的求解策略，通过对模型中状态变量的转换，使原本刚性较强的微分方程组转化为一非刚性的常微分方程组。
2.
In this dissertation work , a new shower - bubble type equilibrator is developed , and is double - checked with the laminary flow type equilibrator made by cooper ( 1998 ) . significance test shows no distinct discrepancies between the two . the new equilibrator can measure the pco2 not only at the sea - atmosphere interface , but also under deep - sea water 主要实验结果和结论如下：研制了新的喷淋-鼓泡式平衡器，并与cooper , d . j . ( 1998 )的层流式平衡器进行现场互校，显著性检验证明两种平衡器之间无显著性差异。
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