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Cleaning of gaseous hydrogen chloride in a syngas by spray-dried potassium-based solid sorbents.
- Source :
- Korean Journal of Chemical Engineering; May2015, Vol. 32 Issue 5, p845-851, 7p
- Publication Year :
- 2015
-
Abstract
- There are corrosive gases such as HS and HCl in a coal- or biomass-derived syngas. HCl can be removed by NaCO or KCO at hot temperatures. Hot syngas cleaning has the advantage of improving thermal efficiency. We investigated HCl removal by spray-dried potassium-based solid sorbents which were originally developed for post-combustion CO capture. Both fresh and spent CO sorbents were tested to confirm the applicability as a sorbent for HCl cleaning. Saturation chlorine sorption capacity was measured using a fixed-bed reactor at a temperatures of 300-500 °C under an ambient pressure. Both fresh and spent CO sorbents showed saturation chlorine sorption capacity above 15 wt%. HCl removal performance of the sorbents was investigated in a micro fluidized-bed reactor and a bench-scale bubbling fluidized-bed reactor. HCl concentration was lowered from 150-900 ppmv to less than 5 ppmv and from 130-390 ppmv to less than 1 ppmv in a micro fluidized-bed reactor and in a bench-scale bubbling fluidized-bed reactor, respectively, at 300-540 °C and 20 bar. It could be concluded that both fresh and spent spray-dried potassium-based CO sorbents could be utilized as a disposable HCl sorbent for hot syngas cleaning. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02561115
- Volume :
- 32
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Korean Journal of Chemical Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 102482719
- Full Text :
- https://doi.org/10.1007/s11814-014-0256-3