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From

Effective Recovery of Methane from Coal Mine Methane Gas by Vacuum Pressure Swing Adsorption: A Pilot Scale Case Study

Andrzej Olajossy

Chemical Engineering and Science. 2013, 1(4), 46-54 doi:10.12691/ces-1-4-1
  • Figure 1. Scheme of gas stream in the first version of VPSA process
  • Figure 2. Scheme of modified gas stream flows and schedule for process in cycles PSA and VPSA
  • Figure 3. Average methane content in enriched, high-methane gas vs. total quantity of methane and carbon dioxide introduced to module VPSA
  • Figure 4. Average carbon dioxide content in enriched, high-methane gas vs. total quantity of methane and carbon dioxide introduced to module VPSA
  • Figure 5. Average content of inerts (N2+O2) in enriched, high-methane gas vs. total quantity of methane and carbon dioxide introduced to module VPSA
  • Figure 6. Average content of methane in enriched, high-methane gas vs. total quantity of methane and carbon dioxide desorbed in process operations
  • Figure 7. Average content of carbon dioxide in enriched, high-methane gas vs. total quantity of methane and carbon dioxide desorbed in process operations
  • Figure 8. Average content of inters in enriched, high-methane gas vs. total quantity of methane and carbon dioxide desorbed in process operations
  • Figure 9. Efficiency of methane separation vs. total quantity of methane and carbon dioxide introduced to module VPSA
  • Figure 10. Efficiency of methane separation vs. total quantity of methane and carbon dioxide desorbed in process operations
  • Figure 11. Inerts (N2+O2) content in high-methane gas vs. efficiency of methane separation