轻烃回收不同制冷工艺的技术分析  

Technical analysis of different refrigeration processes in light hydrocarbon recovery

作　　者：张东华[1] 汤颖[1] 郭亚冰[1] 范峥[1] 

机构地区：[1]西安石油大学石油炼化工程技术研究中心,陕西西安710065

出　　处：《石油化工应用》2014年第5期80-85,共6页Petrochemical Industry Application

基　　金：陕西省科技计划项目:石油化工过程多目标资源集成耦合关键技术的开发与研究资助;项目编号:2014SF4366

摘　　要：结合天然气组成、压力、温度等条件,分析了冷剂制冷、膨胀制冷和复合制冷工艺的工作原理、特点及适用范围,探讨了不同制冷方法的影响因素和选择参考条件。以降低制冷温度、改善制冷效率、提高能量利用率为前提,分析了提高装置运行灵活性,保障安全稳定生产的技术手段。混合冷剂制冷以大气环境作为冷凝介质,可灵活调节产生较单一冷剂更低且为一定温度范围的低温冷量以适应不同组成天然气的冷凝分离要求,安全性好、适应面广、灵活性大、能耗低、轻烃收率高,在轻烃回收中的应用将不断扩展。According to conditions of natural gas composition, pressure, temperature and so on, some various methodologies including refrigerant refrigeration, expansion refrigeration and complex refrigeration of working principle, characteristics and suitable scopes were analyzed. The related influence and necessary reference was discussed for different refrigeration processes above mentioned. For the sake of reducing refrigeration temperature, improving system efficiency and upgrading energy utilization, some technical means which could enhance device operation flexibility and guarantee safe stable production were adopted. As the condensing intermedium containing atmosphere around, mixed refrigerant refrigeration was used to satisfy the need of producing a certain range for lower temperature compared with single refrigerant to meet the demand of condensing separation requirements with distinct composition of natural gas. Such technology had some advantages of better safety, wider adjustment, more flexibility, lower consumption and higher yield of light hydrocarbon. The application of light hydrocarbon recovery would be expanded continuously.

关 键 词：轻烃回收 制冷工艺 回收率 工艺优化 

分 类 号：TE624[石油与天然气工程—油气加工工程]