On the performance of a spouted bed type device fo... - BV FAPESP
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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

On the performance of a spouted bed type device for feeding spent coffee grounds to a circulating fluidized bed reactor

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Author(s):
Massaro Sousa, L. [1] ; Ferreira, M. C. [1]
Total Authors: 2
Affiliation:
[1] Univ Fed Sao Carlos, Chem Engn Dept, Drying Ctr Pastes Suspens & Seeds, POB 676, BR-13565905 Sao Carlos - Brazil
Total Affiliations: 1
Document type: Journal article
Source: CHEMICAL ENGINEERING RESEARCH & DESIGN; v. 160, p. 31-38, AUG 2020.
Web of Science Citations: 0
Abstract

Using solid biomass wastes as feedstocks for industrial generation of renewable energy is appealing to meet company's energy demands with environmental awareness; however, maintain continuous feeding of wastes to reactors remains a challenge in processing. In this study, the performance of a non-mechanical spouted bed (SB) feeder was evaluated for handling dry and moist spent coffee ground (SCG) powders to a circulating fluidized bed reactor. A comprehensive experimental study was carried out to investigate the effects of operating variables and air inlet nozzle configuration on the solids circulation rates and pressure profiles. Using a convergent nozzle at the air inlet improved feeding stability compared to a conventional orifice air inlet. The circulation rates could be varied from 3.0 < W-S < 11.0 g/s by adjusting the air flowrate and the entrainment length. Although SB performance was affected by the powder's flowability, the feeder operation was rather stable, with fluctuations less than 20% in W-S. Moreover, W-S could be accurately predicted from pressures measured at the feeder and riser. The SB showed enhanced flexibility in handling SCGs with different properties compared to a non-mechanical L-valve. It suggests that SBs might be an appealing alternative to feed waste biomass powders into reactors in a continuous mode. (C) 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 16/25946-2 - Study on the performance of non-mechanical valves as feeders devices of biomass powders in circulating fluidized beds reactors
Grantee:Lucas Massaro Sousa
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 18/11031-8 - Feeding biomass powders into circulating fluidized bed reactors using non-mechanical devices: a computational fluid dynamics (CFD) analysis
Grantee:Lucas Massaro Sousa
Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)