循环换热分离器是费托合成工艺核心设备，通过总结分析8台循环换热分离器改造前后运行数据，证明现有改造措施无法长期有效解决热侧整体压降、换热性能、重质油分离效果差的问题，费托合成装置随运行周期被迫降负荷且能耗高，对此提出将换热器与分离器独立设置的改造思路，建议换热器选用传统列管式结构，分离器选用抗堵旋风式结构。

Loop heat exchange separator is the core equipment of Fischer-Tropsch synthesis process.Through summarizing and analyzing the operational data before and after the renovation to eight certain heat exchange separators,it is proved that the existing renovation measures cannot effectively solve the problems such as undesired overall pressure drop at the hot side,poor heat exchange performance and poor separation effect for heavy oil.Fischer-Tropsch synthesis unit features typically with high energy consumption and often has to reduce load over the operating cycle.In this regard,the idea of reconstructing the heat exchanger and the separator independently is proposed and it is recommended that a traditional tubular structure is employed for the heat exchanger and anti-blocking cyclone structure for the separators.