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Cyclic performance evaluation of a polyethylenimine/silica adsorbent with steam regeneration using simulated NGCC flue gas and actual flue gas of a gas-fired boiler in a bubbling fluidized bed reactor

Zhang, Wenbin; Sun, Chenggong; Snape, Colin E.; Sun, Xuezhong; Liu, Hao

Authors

Wenbin Zhang

COLIN SNAPE COLIN.SNAPE@NOTTINGHAM.AC.UK
Professor of Chemical Technology & Chemical Eng

HAO LIU liu.hao@nottingham.ac.uk
Professor of Energy Engineering



Abstract

To accelerate the deployment of Carbon Capture and Storage (CCS) based on the solid amine adsorbents towards a practical scale application relevant to Natural Gas Combined Cycle (NGCC) power plants, this study has evaluated the cyclic performance of a polyethylenimine/silica adsorbent of kg scale in a laboratory scale bubbling fluidized bed reactor. A high volumetric concentration 80−90 vol% of steam mixed with N2 and CO2 has been used as the stripping gas during a typical temperature swing adsorption (TSA) cycle. Both the simulated NGCC flue gas and the actual flue gas from a domestic gas boiler have been used as the feed gas of the CO2 capture tests with the solid adsorbent. Various characterization has been carried out to elucidate the possible reasons for the initial capacity decline under the steam regeneration conditions. The effect of presence of CO2 in the stripping gas has also been studied by comparing the working capacities using different regeneration strategies. It has been demonstrated that the breakthrough and equilibrium CO2 adsorption capacities can be stabilized at approximately 5.9 wt% and 8.6 wt%, respectively, using steam regeneration for both the simulated and actual natural gas boiler flue gases. However, using a concentration of 15 vol% CO2 in the stripping gas has resulted in a significantly low working capacity at a level of 1.5 wt%, most likely due to the incomplete CO

Journal Article Type Article
Publication Date 2020-04
Journal International Journal of Greenhouse Gas Control
Print ISSN 1750-5836
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 95
Article Number 102975
APA6 Citation Zhang, W., Sun, C., Snape, C. E., Sun, X., & Liu, H. (2020). Cyclic performance evaluation of a polyethylenimine/silica adsorbent with steam regeneration using simulated NGCC flue gas and actual flue gas of a gas-fired boiler in a bubbling fluidized bed reactor. International Journal of Greenhouse Gas Control, 95, https://doi.org/10.1016/j.ijggc.2020.102975
DOI https://doi.org/10.1016/j.ijggc.2020.102975
Keywords General Energy; Industrial and Manufacturing Engineering; Pollution; Management, Monitoring, Policy and Law
Publisher URL https://www.sciencedirect.com/science/article/pii/S1750583618306789
Additional Information This article is maintained by: Elsevier; Article Title: Cyclic performance evaluation of a polyethylenimine/silica adsorbent with steam regeneration using simulated NGCC flue gas and actual flue gas of a gas-fired boiler in a bubbling fluidized bed reactor; Journal Title: International Journal of Greenhouse Gas Control; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.ijggc.2020.102975; Content Type: article; Copyright: © 2020 The Authors. Published by Elsevier Ltd.
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