Application of 8-tower VPSA process in low-concentration coalbed methane CH4 concentration and enrichment
WEI Zikang
YAN Yongfei
LI Cunlei
CHEN Shuo
NING Yiwan
Abstract：In order to improve the utilization rate of low-concentration coalbed methane,promote coal mine safety production and gas control,based on the working principle of vacuum pressure swing adsorption(VPSA)process,a control process of methane con-centration and enrichment for low concentration coalbed methane with 8 towers,1 suction and 5 pressure equalization(8-1-5)is pro-posed.Siemens S7-300 PLC is selected as the lower computer controller,Zijinqiao V6.5 is used as the system control configuration,and each adsorption tower works alternately with 24 steps as a cycle.The results show that the 8-tower process can increase the CH4 content in low-concentration coalbed methane from 28% to 51.53%,and the CH4 recovery rate reaches 96.4% .
Keywords：coalbed methaneVPSA processgas controlPLC controlCH4 concentration
Publication Date：2025-02-19
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 33-39 )