| Texto completo | |
| Autor(es): Mostrar menos - |
Prado, D. S.
;
Vilarrasa-Garcia, E.
;
Sampronha, E.
;
Beleli, Y. S.
;
Moreira, F. S.
;
Paiva, J. L.
;
Le Roux, G. A. C.
;
Bastos-Neto, M.
;
Azevedo, D. C. S.
;
Silva, E. C. N.
;
Seckler, M. M.
Número total de Autores: 11
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY; v. 30, n. 5, p. 27-pg., 2023-11-06. |
| Resumo | |
Adsorption is a promising technology for reducing CO2 emissions from combustion gases. However, some issues must be considered when designing large-scale units with low environmental impact and cost. In this contribution, some of these issues are addressed. Firstly, sugarcane bagasse is selected as a meaningful model system. 13XBF Kostrolith zeolite is used as the adsorbent, and adsorption equilibrium data are determined using a magnetic suspension balance from Rubotherm. 13XBF showed a high CO2 capacity and CO2/N-2 selectivity under post-combustion scenario conditions. Secondly, the fluidized bed process was optimized using a 3-stage adsorber and a 3-stage desorber, with heat exchangers that can be used in each stage. The constrained variable in the adsorption column is the solid-to-gas mass feed ratios. It was found that substantial CO2 recovery with 98% purity can be achieved and that the heat load in the desorption column accounts for the highest energy-optimized cost in the process. Thirdly, a detailed CFD model for the fluid dynamics and heat transfer of fluidization for one stage is presented. Bubbles were defined using a hyperbolic filter as predicted by the model, which was consistent with the semi-empirical model and emphasized the significance of bubble size in gas-solid heat transfer, which is essential to the effectiveness of adsorption/desorption. The bubble portion and its effects on the temperature are estimated. Finally, a semi-empirical approach is applied to understanding the controlling factors in a fluidized bed adsorption stage. Results show that the mass transfer from the bubbles to the emulsion is likely the most important resistance to the fluidized adsorber. (AU) | |
| Processo FAPESP: | 23/10333-9 - Otimização topológica para placas perfuradas de leitos fluidizados com multi-estágios |
| Beneficiário: | Diego Silva Prado |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 17/19087-0 - Desenvolvimento de sistema de estocagem de gás natural adsorvido assistida por material de mudança de fase |
| Beneficiário: | Marcelo Martins Seckler |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 22/14475-0 - Desenvolvimento e validação de modelos computacionais avançados para células a combustível |
| Beneficiário: | Luís Fernando Nogueira de Sá |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 20/15230-5 - Centro de Pesquisa e Inovação de Gases de Efeito Estufa - RCG2I |
| Beneficiário: | Julio Romano Meneghini |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |
| Processo FAPESP: | 14/50279-4 - Brasil Research Centre for Gas Innovation |
| Beneficiário: | Julio Romano Meneghini |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |