Treatment of Cork Wastes in a Conical Spouted Bed Reactor

José, María; Álvarez, Sonia; Salazar, Álvaro Ortiz de; Morales, Alberto Angulo; Bilbao, Javier

doi:10.2202/1542-6580.1233

Cited by 4 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Applications of conventional spouted beds with a draft tube cover a wide range of operations and chemical processes, including drying, − combustion, ,− pyrolysis of hydrocarbon, ,, ultrapyrolysis of heavy oils, pneumatic conveying, − pharmaceuticals, − and mixing …”

Section: Introductionmentioning

confidence: 99%

Operating Conditions of Conical Spouted Beds with a Draft Tube. Effect of the Diameter of the Draft Tube and of the Height of Entrainment Zone

José

Álvarez

Salazar

et al. 2007

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

The bed stability of conical spouted beds with a nonporous draft tube located at the bottom of the contactor has been studied, and these results have been compared with those obtained without internal devices, under the same experimental conditions. To design the appropriate geometry of the nonporous draft tube, as well as the height of the entrainment zone without any instability or operating drawbacks in conical spouted beds, the effect of the ratio of the draft tube diameter to the gas inlet diameter, and the height of the entrainment zone on the contactor inlet, on bed stability has been studied. An original correlation for calculation of the minimum spouting velocity in conical spouted beds with a draft tube has been developed, which is also valid for conical spouted beds without internal devices.

show abstract

Section: Introductionmentioning

confidence: 99%

Operating Conditions of Conical Spouted Beds with a Draft Tube. Effect of the Diameter of the Draft Tube and of the Height of Entrainment Zone

José

Álvarez

Salazar

et al. 2007

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…San Joséet al 27 conducted an experimental work to examine the impact of draft tube length on the hydrodynamics of an industrial-scale spouted bed. They reported that varying the draft tube length stabilized the bed and enhanced gas−solid contact during the drying process.…”

Section: T H Imentioning

confidence: 99%

Comprehensive CFD-TFM Simulation of Drying in Spouted Beds with Draft Tubes

Naghdi,

Arabi,

Molaei Dehkordi

2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In this article, simulation runs were conducted to predict the drying evolution of sand in conical spouted beds with a nonporous draft tube using the Eulerian−Eulerian approach. The simulation results were validated against experimental data reported in the literature, and good agreement was achieved. In addition, the effects of various operating and design parameters, such as superficial gas velocity, inlet air temperature, the draft tube's length and diameter, and the solid phase's initial moisture content on the sand drying, were carefully investigated. It was found that the operating temperature and superficial gas velocity are the most essential parameters for improving the drying process and reducing the drying time of the sand particles. In addition, the choice of drag model, restitution coefficient, and specularity coefficient were found to have no significant influence on the drying time of the solid phase. Moreover, increasing the particles' diameter and initial moisture content leads to longer drying times, whereas increasing the conical bed angle prolongs the drying time for the solid particles. On the other hand, increasing the nozzle diameter and entrance length decreases the drying time of the solid phase. Furthermore, reducing the diameter and length of the draft tube also decreased the drying time.

show abstract