Simulation Study on Influence of Flow Change of Oxygen-contained Coal-bed Methane upon Liquefaction Process
ZHU Jing
WANG Changyuan
ZHANG Wu
REN Xiaokun
Abstract：In this paper, simulation calculation wad carried out on the liquefaction process of coal-bed methane by using HYSYS software and analysis was made on influence of the flow change of coal-bed methane upon the energy consumption of liquefaction and the recovery rate of methane. The results showed that the change range of the total liquefaction energy consumption was identical with that of coal-bed methane flow, of which the change range of the nitrogen compression energy consumption was greater than that of coal-bed methane flow and that of the MRC compression energy consumption was smaller than that of coal-bed methane;the flow change increased the liquefaction energy consumption of unit LNG product, but the flow decrease did not affect the recovery rate of coal-bed methane, and only the flow increase may reduce its recovery rate. In actual operation, it’ s better to make the cooling system having 5% margin so as to ensure the security and stability of the liquefaction process.
Keywords：oxygen-contained coal-bed methaneliquefactionflow changerecovery rate of methaneenergy consumption
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( 1-4 )