The development trend of Fischer–Tropsch (F–T) technology is to develop high value-added products. The separation of linear α-olefins with low cost is an effective method. Nevertheless, the lack of thermodynamic data and the huge energy consumption are the two main problems restricting the development of the separation process. The thermodynamic data of the key components (1-dodecene and n-dodecane) in the F–T product were measured. The Wilson binary interaction parameters of the key components were obtained. Next, one traditional distillation column sequence and two dividing wall column (DWC) sequences were designed to separate the F–T heavy oil to obtain narrow fractions with different carbon numbers. Then, the obtained fractions of C10 and C12 were simulated to obtain 1-decene and 1-dodecene, respectively. There was a traditional distillation and a differential pressure thermal coupling distillation process. When separating 95.0% purity 1-decene and 1-octene, the direct DWC process and differential pressure thermal coupled distillation are an excellent combination, which can reduce the energy by 33.1% (i.e., 11,286 kW) and total annual cost by 15.9% (i.e., 3.96 × 10⁶ $) compared with traditional distillation.

费托（F-T）技术的发展趋势是开发高附加值产品。低成本分离直链α-烯烃是一种有效的方法。然而，热力学数据的缺乏和巨大的能耗是制约分离工艺发展的两大主要问题。关键组分（1-十二碳烯和n-十二烷）在 F-T 产品中进行了测量。得到关键组分的威尔逊二元相互作用参数。接下来，设计了一个传统的蒸馏塔序列和两个分隔壁塔 (DWC) 序列来分离 F-T 重油，以获得具有不同碳数的窄馏分。然后，对得到的 C10 和 C12 馏分进行模拟，分别得到 1-癸烯和 1-十二碳烯。有传统的蒸馏和差压热耦合蒸馏工艺。在分离纯度为 95.0% 的 1-癸烯和 1-辛烯时，直接 DWC 工艺和差压热耦合精馏是一个很好的组合，可降低能耗 33.1%（即 11,286 kW），年总成本降低 15.9%（即，3.96 × 10 ⁶ $) 与传统蒸馏相比。