热耦合精馏塔通过在塔体内安装竖直隔板将多个塔耦合在一个塔体内，单塔可实现传统多塔的分离效果。塔体内各部分塔板数分布不仅影响组分分离效果，还会影响设备投资（或能耗）。基于理论模拟仿真，对热耦合精馏塔内部各区域塔板分布进行研究，重点考察其对能耗及流场分布的影响。模拟结果表明，热耦合精馏塔内部塔板分布影响其能耗及内部流场分布，且公共精馏段与公共提馏段塔板分布存在唯一最佳匹配，而隔板左右两侧塔板分布存在多个最佳组合。

Compared with conventional distillation separation column, thermally coupled dividing wall distillation column (TCDWDC) has more merits, such as needing less land, lower capital investment, less energy and so on, hence attracting plenty of attentions from researchers and engineers.TCDWDC, integrating two or more towers into one tower by using vertical walls, can realize separation effects as conventional multi-tower cascade.However, trays distribution of each section inside TCDWDC will affect separation efficiency and capital investment or energy consumption.Based on theoretical simulation and calculation, trays distribution of each section inside TCDWDC is explored, with emphasis on its influences on energy consumption and stream field distribution.Simulation results demonstrate that trays distribution indeed affects energy consumption and internal stream field distribution of TCDWDC.Besides, there is a unique optimum matching between tray distributions of the public distillation section and the public distillation section, while there exist several couples of matchings on both sides of the vertical wall.

宋二伟(1989-),男,硕士,主要从事过程工艺技术开发,sew0208@126.com