Shi, YF;
Liu, XJ;
Guo, Y;
Kalbassi, MA;
Liu, YS;
(2017)
Desorption characteristics of H₂O and CO₂ from alumina F200 under different feed/purge pressure ratios and regeneration temperatures.
Adsorption
, 23
(7-8)
pp. 999-1011.
10.1007/s10450-017-9907-0.
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Abstract
Air pre-purification is an important process for industrial air separation with cryogenic distillation method. This process is typically realized by pressure swing adsorption or temperature swing adsorption. H₂O and CO₂ are the two major components to be removed among the contaminants. In this paper, we establish a mathematical model describing the mass and heat balances in the adsorption bed, and the double-component adsorption/desorption equilibriums of H₂O/CO₂ on alumina F200. To conduct desorption performance analysis, a one-cycle process consisting of feed, blowdown, and purge step under different operating conditions, such as feed/purge pressure ratio and regeneration temperature, is numerically studied. The effect of heat on the desorption performance of H₂O and CO₂ is investigated by changing the purge gas temperature within 30–200 °C under feed/purge pressure ratios of 6:1.1 and 10:1.1, respectively. Detailed results of the H₂O and CO₂ adsorption/desorption behaviors in the bed are demonstrated. The mass and heat transfer characteristics during desorption are also analyzed. Suggestions on the optimization of the heating temperature and duration of purge gas are also proposed.
| Type: | Article |
|---|---|
| Title: | Desorption characteristics of H₂O and CO₂ from alumina F200 under different feed/purge pressure ratios and regeneration temperatures |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/s10450-017-9907-0 |
| Publisher version: | https://doi.org/10.1007/s10450-017-9907-0 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Air purification, Alumina F200, H₂O and CO₂ desorption, Heat and mass transfer |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10078781 |
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