Design and proof of concept of a continuous pressurized multi-stage fluidized bed setup for deep sour gas removal using adsorption

Rick T. Driessen*, Benno Knaken, Tim Buzink, Daan A.F. Jacobs, Juraj Hrstka, Derk W.F. Brilman*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Pressure swing adsorption (PSA) processes are frequently used in the (petro)chemical industry, but they suffer from ineffective use of the sorbent and slow heat transfer. A pressurized multi-stage fluidized bed (MSFB) for continuous PSA is proposed in this work to overcome these drawbacks. A one stage fluidized bed adsorber was used to determine minimum fluidization velocities of the used amine sorbent at various pressures up to 10 bara. The design of a pilot scale experimental setup is described, together with supporting experiments to show the proof of concept. Removal from 37,000 mol ppm CO2 to <10 mol ppm CO2 in a few seconds was demonstrated in the pressurized MSFB adsorber. The tray efficiencies were high: often larger than 0.85. Using a numerical particle model, it was concluded that the CO2 adsorption rate is controlled via intraparticle mass transfer.

Original languageEnglish
Pages (from-to)859-872
Number of pages14
JournalPowder technology
Volume366
DOIs
Publication statusPublished - 15 Apr 2020

Keywords

  • UT-Hybrid-D
  • Lewatit VP OC 1065
  • Multi-stage fluidized bed
  • Natural gas
  • Particle model
  • Pressure swing adsorption
  • Amine sorbent

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