Valorization of calcium carbonate-based solid wastes for the treatment of hydrogen sulfide in a semi-continuous reactor: Part II - slurry bubble column pilot
| Autor: | Ange Nzihou, Patrick Sharrock, Marta Galera Martinez, Doan Pham Minh |
|---|---|
| Přispěvatelé: | Centre de recherche d'Albi en génie des procédés des solides divisés, de l'énergie et de l'environnement (RAPSODEE), Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Triphasic process General Chemical Engineering Hydrogen sulfide H2S removal 02 engineering and technology 010402 general chemistry Solid Waste 01 natural sciences Industrial and Manufacturing Engineering Suspension (chemistry) chemistry.chemical_compound [SPI]Engineering Sciences [physics] Environmental Chemistry Slurry bubble column pilot Effluent Continuous reactor General Chemistry 021001 nanoscience & nanotechnology 6. Clean water 0104 chemical sciences Volumetric flow rate Calcium carbonate Volume (thermodynamics) Chemical engineering chemistry Slurry 0210 nano-technology |
| Zdroj: | Chemical Engineering Journal Chemical Engineering Journal, Elsevier, 2020, 390, pp.1-11/124576. ⟨10.1016/j.cej.2020.124576⟩ |
| ISSN: | 1385-8947 |
| Popis: | International audience; • H 2 S removal from the gas phase using calcium carbonate based solid wastes. • Validation of a triphasic gas/liquid/ solid process at the pilot scale. • Validation of the process with a real gaseous effluent. Keywords: H 2 S removal Calcium carbonate Solid waste Triphasic process Slurry bubble column pilot This work is devoted to the removal of H 2 S from the gas phase using a suspension of calcium carbonate-based residues, recovered from the production of sodium bicarbonate. A 145 L (1.6 m height and 0.34 m internal diameter) slurry bubble column (SBC) reactor was used. The gaseous effluent was bed from the bottom and get out from the top of the column. The suspension (2-20 wt%) was recirculated from the bottom to the top by a pump. This created a counter-current regime between the gas phase (from the bottom to the top) and the liquid phase (from the top to the bottom) which favor the gas/liquid exchange inside the reactor. The influence of different parameters including solid concentration in the suspension (w s), recirculating rate of the suspension (Q R), inlet gas flow rate (Q G), and volume of the suspension, was investigated. The results obtained with this confirmed those at the lab scale, for both synthetic gaseous effluent (H 2 S diluted in compressed air) and real gaseous effluent emitted by the buffer tank of a wastewater treatment plant. This allows validating the technology before its deployment at the large industrial scale for H 2 S removal from the gas phase. |
| Databáze: | OpenAIRE |
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