Fluidised bed drying of soybeans

Soponronnarit, Somchart; Swasdisevi, Thanit; Wetchacama, Somboon; Wutiwiwatchai, Wivat

doi:10.1016/s0022-474x(00)00015-1

Cited by 60 publications

(45 citation statements)

References 6 publications

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“…This result is similar to those reported by several workers (Soponronnarit et al 2001;Dondee et al 2011). The cracking of soybean kernels under microwave-fluidized bed drying in the present study were lower when compared with individual hot-air fluidized bed drying at the same level of moisture content, reported by previous studies: 40-60 % by Soponronnarit et al (2001) and 53.5-79 % by Wiriyaumpaiwong et al (2003). Also, Dondee et al (2011) reported that percentage of damage of soybean kernels was negligible under combined near-infrared radiation and fluidized bed drying, which was lower than 9.7 %.…”

Section: Cracking Of Soybean Kernelssupporting

confidence: 93%

“…The cracking of soybean kernels occurred in the V-shaped fissures, as observed from the experiments. This result is similar to those reported by several workers (Soponronnarit et al 2001;Dondee et al 2011). The cracking of soybean kernels under microwave-fluidized bed drying in the present study were lower when compared with individual hot-air fluidized bed drying at the same level of moisture content, reported by previous studies: 40-60 % by Soponronnarit et al (2001) and 53.5-79 % by Wiriyaumpaiwong et al (2003).…”

Section: Cracking Of Soybean Kernelssupporting

confidence: 92%

“…The equilibrium moisture content was calculated using the equation given by Soponronnarit et al (2001):…”

Section: Moisture Diffusion Modelmentioning

confidence: 99%

“…Sinnecker et al 2005Li et al 2002;Freire et al 2004;Overhults et al 1973), fluidized bed drying (Soponronnarit et al 2001;Osella et al 1997), concurrent sliding moving bed drying (Pfeifer et al 2010;Felipe and Barrozo 2003;Barrozo et al 2006), spouted bed drying (Duarte et al 2004;Wiriyaumpaiwong et al 2003), rotary dryer (Luz et al 2010), near-infrared radiation-fluidized-bed drying (Dondee et al 2011), microwave-hot air drying (Gowen et al 2008). These studies focused mainly the effects of air temperature, relative humidity and initial moisture content on quality of soybean such as urease activity, cracking, breakage, fatty acids, protein and germination.…”

Section: Introductionmentioning

confidence: 99%

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Effects of microwave - fluidized bed drying on quality, energy consumption and drying kinetics of soybean kernels

2014

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Moisture content of soybean kernel at harvest time is too high for storage, and needs to be reduced. In this research, drying characteristics, quality and energy requirement for microwave-fluidized bed drying of soybean kernels were studied. The results showed that air temperature (80-140°C), velocity (1.8-4.5 m/s) and microwave power (200-500 W) significantly influenced drying time, moisture diffusivity, rehydration capacity, cracking, and specific energy consumption (P≤0.05). Among the applied models, Page's model has the best performance to estimate the microwavefluidized bed drying behavior of the soybean kernels. Moisture diffusivity values increased (6.25×10 −10 to 42.14×10 -10 m 2 /s) as the air velocity decreased and air temperature and microwave power increased. Activation energy was foundto be between 3.33 and 17.70 kJ/mol. Minimum cracking percentage of soybean kernels (12.96 %) was obtained at 80°C, 1.8 m/s and 200 W treatments. The increase in microwave power and decrease in air velocity level decreased the rehydration capacity. Specific energy consumption varied from 50.94 to 338.76 MJ/kg water and the lowest specific energy consumption were obtained at 80°C, 4.5 m/s and 500 W.

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Section: Cracking Of Soybean Kernelssupporting

confidence: 93%

Section: Cracking Of Soybean Kernelssupporting

confidence: 92%

“…The equilibrium moisture content was calculated using the equation given by Soponronnarit et al (2001):…”

Section: Moisture Diffusion Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of microwave - fluidized bed drying on quality, energy consumption and drying kinetics of soybean kernels

2014

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“…Este processo é fundamental para permitir o armazenamento dos grãos por longos períodos, sem que eles sofram deterioração por microrganismos. Soponronnarit et al (2001), afirma que os grãos de soja são colhidos com alto teor de humidade (25-33% em base seca) e que o armazenamento seguro requer a diminuição rápida da umidade para preservar a qualidade.…”

Section: Introductionunclassified

Estudo Numérico De Um Leito Fluidizado Borbulhante Utilizando Um Código Combinado CFD-Dem

Colman¹,

Alba²,

Paraíso³

et al. 2015

Anais Do XXXVII Congresso Brasileiro De Sistemas Particulados

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RESUMOLeitos fluidizados são usados em indústrias nas operações de separação, mistura, secagem e combustão. Este trabalho analisa o comportamento de um leito fluidizado com o código livre MFIX-DEM, desenvolvido pelo Laboratório Nacional de Tecnologias Energéticas (NETL-USA). Nesse código, as fases sólida e gasosa são tratadas numa abordagem euleriana-lagrangeana. Para a fase gasosa, foram resolvidas as equações da continuidade e da conservação de quantidade de movimento. Para as partículas, ou a fase sólida, foi utilizado o Método dos Elementos Discretos (DEM), que descrevem os fenômenos de contato e colisão entre as partículas com o conceito de mola-amortecedor-atrito, por meio de uma abordagem numérica explícita. Uma malha bidimensional, com injeção de gás na região inferior do leito, foi utilizada. Grãos de soja foram o material granular analisado. A velocidade do gás foi variada para determinar a influência na perda de carga do leito e a curva da velocidade de mínima fluidização. Também foram analisados leitos preenchidos com diferentes alturas iniciais (0,08 m, 0,115 m e 0,150 m). Os resultados obtidos por diferentes correlações de arrasto foram comparados com curvas de fluidização experimentais.

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Fluidized Bed Drying: Recent Developments and Applications

Saini

Kumar

et al. 2022

Thermal Food Engineering Operations

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Fluidised bed drying of soybeans

Cited by 60 publications

References 6 publications

Effects of microwave - fluidized bed drying on quality, energy consumption and drying kinetics of soybean kernels

Effects of microwave - fluidized bed drying on quality, energy consumption and drying kinetics of soybean kernels

Estudo Numérico De Um Leito Fluidizado Borbulhante Utilizando Um Código Combinado CFD-Dem

Fluidized Bed Drying: Recent Developments and Applications

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