天然气露点控制装置工艺优化

摘要

某天然气露点控制装置能耗过高,设备陈旧,尺寸过大,经济效益差,需要新建一套装置替代原装置.新装置从关键设备选型、防冻剂注入方式等角度,进行了工艺优化.优化后的装置结构紧凑、尺寸和重量明显降低,系统能耗明显节约.优化结果表明:选用板翅式换热器等紧凑高效换热器替代常规换热器,可以大幅降低系统制冷负荷需求,节约系统能耗;高效换热器的使用大幅降低装置的尺寸和重量;采用两段注醇工艺明显节约乙二醇注入量,降低乙二醇再生能耗.%Process optimization of natural gas dew point control device was carried out from the aspects of key equipment selection,glycol injection mode and so on.Optimized device was compared with original device.The results show that:using compact and efficient heat exchanger such as plate type finned heat exchanger can greatly reduce the refrigerant load demand and the energy consumption,and application of efficient heat exchanger can greatly reduce the size and weight of the device;The mode of glycol injection in two times can significantly save glycol injection rate and reduce glycol regeneration duty.