Publication
Dry-Scrubbing of Acid Gases in Recirculating Cyclones
| dc.contributor.author | Chibante, Vania | por |
| dc.contributor.author | Fonseca, Ana | |
| dc.contributor.author | Salcedo, Romualdo | |
| dc.date.accessioned | 2007-10-02T08:26:42Z | por |
| dc.date.accessioned | 2011-10-06T14:40:38Z | |
| dc.date.available | 2007-10-02T08:26:42Z | por |
| dc.date.available | 2011-10-06T14:40:38Z | |
| dc.date.issued | 2007 | por |
| dc.description.abstract | This paper describes a laboratory-scale study on the use of recirculating cyclones as reaction chambers for dry scrubbing of gaseous HCl with solid slaked lime particles. This gas cleaning system combines a numerically optimized reverse flow gas cyclone (RS_VHE geometry) with a straight-through cyclone concentrator, which simultaneously increases the capture of the solid particles and promotes their partial recirculation. A laboratory-scale study was undertaken to test this technology and to compare its performance to a modified Stairmand HE reverse flow cyclone without recirculation. The experimental conditions were: reaction temperature ≈326K, gas flow rate ≈2.9x10-4Nm3.s-1 and relative humidity of the gas ≈8.5%. The experimental variables tested were the solids load (1.0-9.2 x10-7kg.s-1) and HCl concentration (0.4-2.8 x10-2mol.m-3) in the inlet gas. The experimentally obtained particulate removal efficiencies with the recirculating cyclones (≈98%) were higher than those obtained with the Stairmand HE cyclone (≈93%), with the additional advantage of having significantly lower pressure drop. As for the acid removal efficiencies (≈10 to 96%), no significant differences were found between the two systems tested under the same experimental conditions. The possibility of using optimized recirculating cyclones for gas cleaning in a dry scrubbing process is very promising, since this is a low cost technology, highly efficient both for the removal of acid gases and for the capture of solid particles, which has the advantage of not requiring a post-reaction de-duster. | por |
| dc.description.sponsorship | The authors acknowledge the financial support from the Portuguese Foundation for Science and Technology (FCT) through the contract POCTI/EQU/37992/2001/FEDER and the scholarship BD 8191/2002 | por |
| dc.identifier.citation | Journal Hazardous Materials. 144 (2007), pp. 682-686. | por |
| dc.identifier.uri | http://hdl.handle.net/10284/294 | por |
| dc.language.iso | eng | por |
| dc.publisher | Elsevier | por |
| dc.relation.ispartofseries | Journal Hazardous Materials | por |
| dc.relation.ispartofseries | 144 | por |
| dc.subject | Recirculating cyclones | por |
| dc.subject | Gas Cleaning | por |
| dc.subject | Dry-scrubbing | por |
| dc.subject | HCl | por |
| dc.subject | Slaked lime | por |
| dc.subject | Cyclone reactor | por |
| dc.title | Dry-Scrubbing of Acid Gases in Recirculating Cyclones | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| person.familyName | Fonseca | |
| person.familyName | Salcedo | |
| person.givenName | Ana | |
| person.givenName | Romualdo | |
| person.identifier.ciencia-id | F61F-23C0-BBF5 | |
| person.identifier.ciencia-id | C816-985C-014C | |
| person.identifier.orcid | 0000-0002-3207-4819 | |
| person.identifier.orcid | 0000-0003-3546-7404 | |
| person.identifier.rid | G-5355-2013 | |
| person.identifier.scopus-author-id | 7101964374 | |
| person.identifier.scopus-author-id | 7007047524 | |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |
| relation.isAuthorOfPublication | 1f238a52-936a-454d-8146-9418c538eea0 | |
| relation.isAuthorOfPublication | f77be778-2721-424a-a6e4-f7842d3f164d | |
| relation.isAuthorOfPublication.latestForDiscovery | 1f238a52-936a-454d-8146-9418c538eea0 |