摘要
蒸餾塔在化學工業上是使用最廣泛的單元設備，但也是能耗最多的分離單元。本論文前半部份探討熱整合型式的蒸餾塔，也是工業上最有發展潛力之一的分隔內壁蒸餾塔(DWC)。在實際廢水回收DMF案例中探討ㄧ系列的穩態最適化設計、年總成本(TAC)、CO2排放和投資經濟效益，最後針對蒸餾塔的換熱單元，做兩種型式再沸器的細部設計。
根據優化結果相較於傳統直接序列的雙塔比較，在整個年總成本分析上DWC比雙塔節省31.65%，其中操作成本降低了約37.15%。在CO2排放上，DWC更是降低了30%。在整個專案經濟評估方面，回收年限只有2.54年，顯示DWC在未來工業上發展的潛力。
另外論文第二部份，傳統煉油廠的常壓分餾製程的動態模擬，分別以油品分餾點溫度控制與板溫控制，兩種不同形式的控制架構進行整廠控制。比較兩控制架構在進料干擾情況下的動態響應，並說明以板溫控制的控制架構比前者更接近現實工廠的操作。再針對第二種板溫控制架構中，加入其進階控制與推裡控制，改善板溫控制架構下的油品品質控制的偏離情況。

關鍵字: 最適化，分隔內壁蒸餾塔，整廠控制

Distillation columns are the most widely used equipment, but also are the major energy consumer in the chemical and petrochemical industries. The fist part of this paper discusses one of the heat integrated configuration of distillation columns, dividing-wall column (DWC), it’s also the most potential development technology of the separation processes about distillation columns. In the case of actual wastewater treatment for DMF recovery, we build the steady-state model using DWC configuration, discuss the optimization of the process, total annual cost (TAC), CO2 emissions and the economic benefits of the investment. Finally, in the forward part, we create the detailed design on the reboiler units for the key heat transfer units of distillation towers.
According to the result of the optimization procedure, we can save up to 31.65% in the TAC, particularly saving 37.15% in the operating costs. In the CO2 emissions, we can save about 30% comparing the direct-sequence process. On the assessment of economic investments, we get the recovery period of 2.15 years. So DWC is the potential development process in the future.
The other part of this paper, we discuss process control on dynamic simulations using crude distillation unit (CDU) process in the refinery plants. Two control schemes are available. The fisrt one is oil products quality control directly, another one is stage temperature control to the oil products indirectly. Comparing the dynamic responses of the two control schemes on the ±3% feed disturbance, the stage temperature control scheme is closer to the practical industries. For improving the offset dynamic error on the oil products control qualities, we also add advanced regulatory control strategies and inferential controls on the latter control scheme.

keywords：Optimization, Dividing-wall column, Plantwide control

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