Effect of the presence of HCl on simultaneous CO₂ capture andcontaminants removal from simulated biomass gasification producer gas by CaO-Fe₂O₃ sorbent in calcium looping cycles

Type of content
Journal Article
Thesis discipline
Degree name
Publisher
MDPI AG
Journal Title
Journal ISSN
Volume Title
Language
en
Date
2021
Authors
Nusheh M
Siriwongrungson V
Hongrapipat J
Materic V
Pang, Shusheng
Yip, Alex
Dashtestani, Forogh
Abstract

This study investigated the effect of HCl in biomass gasification producer gas on the CO2 capture efficiency and contaminants removal efficiency by CaO-Fe2O3 based sorbent material in the calcium looping process. Experiments were conducted in a fixed bed reactor to capture CO2 from the producer gas with the combined contaminants of HCl at 200 ppmv, H2S at 230 ppmv, and NH3 at 2300 ppmv. The results show that with presence of HCl in the feeding gas, sorbent reactivity for CO2 capture and contaminants removal was enhanced. The maximum CO2 capture was achieved at carbonation temperatures of 680 °C, with efficiencies of 93%, 92%, and 87%, respectively, for three carbonation-calcination cycles. At this carbonation temperature, the average contaminant removal efficiencies were 92.7% for HCl, 99% for NH3, and 94.7% for H2S. The outlet contaminant concentrations during the calcination process were also examined which is useful for CO2 reuse. The pore structure change of the used sorbent material suggests that the HCl in the feeding gas contributes to high CO2 capture efficiency and contaminants removal simultaneously.

Description
Citation
Dashtestani F, Nusheh M, Siriwongrungson V, Hongrapipat J, Materic V, Yip ACK, Pang S (2021). Effect of the presence of HCl on simultaneous CO₂ capture and contaminants removal from simulated biomass gasification producer gas by CaO-Fe₂O₃ sorbent in calcium looping cycles. Energies. 14(23). 8167-8167.
Keywords
CO2 capture, contaminant removal, CaO-Fe2O3 sorbent, calcium looping
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
02 Physical Sciences
09 Engineering
Fields of Research::40 - Engineering::4004 - Chemical engineering::400401 - Carbon capture engineering (excl. sequestration)
Fields of Research::40 - Engineering::4004 - Chemical engineering::400409 - Separation technologies
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Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)