C3 separation method capable of saving energy and reducing equipment

The invention relates to a C3 separation method, in particular to a C3 separation method capable of saving energy and reducing equipment. The method comprises the following steps: differential pressure conveying, process analysis, a C3 separation process and a low-pressure depropanization tower process in order. According to the C3 separation method, operation steps are simplified and energy is saved. 本发明涉及一种C3分离方法，尤其涉及一种能够节省能源减少设备的C3分离方法。按以下步骤进行：差压输送→工艺分析→C3分离流程→低压脱丙烷塔流程。一种能够节省能源减少设备的C3分离方法，简化操作步骤，节约能源。