Abstract: It is one of the important tasks to perform the necessary liquid loading treatment in the daily operation and management of wet gas pipeline. Based on the transient simulation method of pigging process in OLGA software, the development process prediction model of liquid loading in wet gas pipeline was established. The law of liquid loading deposition and development in wet gas pipeline were analyzed. In the end, the design and simulation of a novel liquid loading treatment scheme was carried out. It is pointed out that adding separation devices between wet gas pipelines can significantly reduce the amount of liquid loading and prolong the liquid loading development duration, which plays a positive role in reducing the frequency of pigging and optimizing the volume of terminal treatment devices. Under the same capacity and constant pressure constraints in the end of the pipeline, the separation device between wet gas pipeline can effectively reduce the power demand in the starting point of pipeline, which is conducive to energy saving and consumption reduction of the overall process flow.

Key words: Liquid loading treatment, Wet natural gas, OLGA, Liquid holdup

摘要： 积液得到必要的处理是湿天然气集气管道日常运行管理中面临的重要任务之一。为了减少集气管道中积液带来的影响和危害，基于OLGA软件的清管工艺瞬态仿真方法，建立了积液在湿气管道中的发展过程预测模型，开展了湿气管道积液沉积以及发展规律分析，在此基础上进行了湿气管道积液处理方案设计和模拟仿真，对所设计积液处理方案的有效性进行了评估。指出在集气管道间增设分离装置可以明显降低集气管道中的积液量和延长管道积液发展直至稳定的持续时间，为减小管道清管频次以及优化末端处理装置容积提供参考；在同等输量以及管道末端压力约束不变条件下，管间增设分离装置可以有效降低管道起点的动力需求，有利于整体工艺流程的节能降耗。

关键词: 积液处理, 　湿天然气, 　OLGA, 　持液率