【摘要】 采用Aspen Plus模拟软件对N,N-二甲基甲酰胺（DMF）合成装置建立了模拟模型，利用夹点技术分析了该装置的换热网络能耗，并对DMF提纯塔（C 103）塔顶回流量进行了灵敏度分析。结果表明：改变最小传热温差不会影响DMF合成装置的换热网络最小公用工程能耗，该换热网络存在不合理匹配；考虑操作弹性和灵敏度变化，将C 103塔顶回流量由5.34 t/h降至3.77 t/h后，该DMF合成装置最小冷却、加热公用工程分别降低284.11,279.75 kW，冷却水和低压蒸汽用量分别降低23.10,0.43 t/h。更多还原

【Abstract】 A simulation model of N,N-dimethylformamide(DMF) synthesis unit was established by Aspen Plus simulation software. The energy consumption of heat exchange network of the unit was analyzed by pinch technology, and the sensitivity analysis of the top reflux flow of DMF purification tower(C 103) was carried out. The results showed that changing the minimum heat transfer temperature difference would not affect the minimum utility energy consumption of the heat exchanger network of the DMF synthesis unit, and the heat exchanger network had unreasonable matching. Considering the operation flexibility and sensitivity change, the minimum energy consumption of cooling and heating utilities of the DMF synthesis unit was reduced by284.11 kW and 279.75 kW respectively after the top reflux flow of C 103 tower was reduced from 5.34 t/h to 3.77 t/h. The consumption of cooling water and low-pressure steam was reduced by 23.10 t/h and0.43 t/h respectively.更多还原