以分离甲醇、乙醇、正丙醇和正丁醇四元混合物的KDWC为研究对象，系统地探讨对其实施温度控制的可行性与有效性。基于灵敏度与稳态偏差最小方法给出了一种5×5温度控制系统。虽然它能有效克服进料浓度扰动的影响，但对进料流量扰动却存在较大的稳态偏差。鉴于系统内部耦合以及塔内压力变化是导致这一问题的根本原因，基于奇异值分解原理又给出了一种5×5温差控制系统。仿真结果显示，它能够有效克服来自进料流量与浓度扰动的影响，保持产品质量的严格控制。结果表明，KDWC虽具有复杂的动态特性和低可控性，但基于塔板温度的推断控制策略仍是可行与有效的。

Feasibility and effectiveness to execute temperature control on a Kaibel dividing-wall column (KDWC) is systematically addressed with the separation of a quaternary mixture of methanol,ethanol,n-propanol,and n-butanol as an illustrative example.In terms of sensitivity analysis and steady-state deviation minimum deviation method,a 5×5 temperature control system is derived.Although it can effectively deal with feed composition disturbances,it leaves fairly large steady-state deviations in product qualities in face of feed flow rate disturbances.Since system interaction and in-column pressurevariations are the primary reasons for the unsatisfactory behavior,another 5x5 temperature difference control system is derived based on the singular value decomposition principle.Closed-loop simulation results show that this system can effectively deal with both feed composition and flow rate disturbances,and achieve tight product quality control.These outcomes demonstrate that the application of temperature inferential control strategy is still feasible and effective in spite of the complicated dynamics and degraded controllability of KDWC.

刘蕊(1994-),男,硕士生