Study on Test Parameters of Oxygen Liquefaction Cold Box for Low-concentration Coal-bed Methane
WANG Changyuan
ZHANG Wu
XIONG Yunwei
XIAO Lu
Abstract：In this paper, analysis was made theoretically on the influence of the variation of methane concentration in the raw material gas upon the operating performance of the liquefaction device according to the operating data of the cold box in the liquefaction pilot plant for low-concentration oxygen-contained coal-bed methane, and it pointed out that the methane recovery rate in LNG was more sensitive to the methane concentration, so consideration should be taken into the adjustment of the circulating amount of refrigerant. If the methane concentration increased, the processing amount of the raw material gas should be reduced so as to maintain the purity and recovery rate of the LNG products;or the LNG production can be increased by increasing the circulating amount of refrigerant so as to improve the economic performance of the device.
Keywords：low-concentration coal-bed methaneLNGrecovery rate of methanecirculating amount of refrigeranteconomic performance
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 26-28,49 )