Development of mobile miniature natural gas liquefiers  

作　　者：Yanxing ZHAO Maoqiong GONG Haocheng WANG Hao GUO Xueqiang DONG 

机构地区：[1]Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100039,China

出　　处：《Frontiers in Energy》2020年第4期667-682,共16页能源前沿（英文版）

基　　金：the National Natural Sciences Foundation of China(Grant Nos.51625603 and 51876215);the International Partnership Program of the Chinese Academy of Sciences(Grant No.GJHZ1876).

摘　　要：With increasing consumption of natural gas(NG),small NG reservoirs,such as coalbed methane and oil field associated gas,have recently drawn significant attention.Owing to their special characteristics(e.g.,scattered distribution and small output),small-scale NG liquefiers are highly required.Similarly,the mixed refrigerant cycle(MRC)is suitable for small-scale liquefaction systems due to its moderate complexity and power consumption.In consideration of the above,this paper reviews the development of mobile miniature NG liquefiers in Technical Institute of Physics and Chemistry(TIPC),China.To effectively liquefy the scattered NG and overcome the drawbacks of existing technologies,three main improvements,i.e.,low-pressure MRC process driven by oil-lubricated screw compressor,compact cold box with the new designed heat exchangers,and standardized equipment manufacturing and integrated process technology have been made.The development pattern of"rapid cluster application and flexible liquefaction center"has been eventually proposed.The small-scale NG liquefier developed by TIPC has reached a minimum liquefaction power consumption of about 0.35 kW.h/Nm^(3).It is suitable to exploit small remote gas reserves which can also be used in boil-off gas reliquefaction and distributed peak-shaving of pipe networks.

关 键 词：natural gas mobile miniature liquefiers mixed refrigerant cycle vapor liquid equilibrium heat transfer 

分 类 号：O62[理学—有机化学]