COMPARISON OF BOG TREATMENT TECHNOLOGY IN LNG STATION WITHOUT LNG OUTPUT

In order to select economical and reasonable Boil-off gas (BOG) treatment technology for different types of liquefied natural gas (LNG) stations, this paper introduces the related technologies of BOG treatment without LNG Output. Using the same working fluid and operating parameters to simulate then the six technologies of pulse tube cryocooler recovery, liquid nitrogen recovery, nitrogen expansion recovery, jet refrigeration recovery, mixed refrigerant refrigeration recovery, and direct compression process were compared in terms of power consumption, economy. On the basis of comparative analysis of power consumption, the actual usage of the above process, and with the payback period as the criterion, the BOG treatment technology suitable for different types of LNG stations is obtained. It provides a reference for different types of LNG stations to select appropriate BOG recovery technology, handles the unsolved problem about selecting BOG treatment technology, and puts forward a prospect for the development of BOG treatment technology.