Mobile natural gas mini-liquefiers have great advantages in application prospects in dealing with scattered and isolated well natural gas resources

pipeline gas redistribution

distributed peak-shaving and vehicle LNG fuel station

etc.In this paper

the various natural gas liquefaction technologies were first analyzed.It is pointed out that the mixed refrigerant liquefaction cycle(MRC)which is the dominant technology in world-wide LNG industry is still the best choice for the miniature scale natural gas liquefiers.The current development of mobile natural gas mini-liquefier is also reviewed.Based on the researches on MRC for 20 years

our team has successfully developed various skid-mount natural gas liquefiers.The idea of flexible liquefaction center and virtual pipe line network is proposed.Series air-cooled skid-mount liquefiers with various capacities from 10000 to 30000 m3·d-1 have been developed and commercialized which is driven by ordinary oil-lubricated screw compressors.The measured specific power consumption of the 30000 m3·d-1 mini-liquefier is almost equal to that of the large-scale LNG plant with 1000000 m3·d-1 in China.At present

several different capacities of liquefiers have been used in Shanxi and Inner Mongolia.