scholarly journals Microwave assisted fluidized bed drying of celery

2018 ◽  
Author(s):  
Amanat Kaur ◽  
Yvan Gariépy ◽  
Valérie Orsat ◽  
Vijaya Raghavan
Keyword(s):  
Fluidized Bed ◽  
Drying Process ◽  
Drying Time ◽  
Fluidized Bed Dryer ◽  
Microwave Assisted ◽  
Air Temperatures ◽  
Quality Product ◽  
Fluidized Bed Drying ◽  
Power Densities ◽  
Kinetics Of

The drying kinetics of celery in a microwave assisted fluidized bed dryer was studied at different drying air temperatures (45°C, 55°C and 65°C) and at different initial microwave power densities (0W/g, 1W/g and 2W/g). Dried product quality, product mass, air temperature, air relative humidity, and electric power consumption were used to monitor the performance of the drying process. The results showed that the Midilli-Kucuk model was best in predicting the moisture ratio as a function of drying time. At any given temperature, the utilization of the microwave energy reduced by more than 50% the drying time. Keywords: drying; celery; MWFBD

scholarly journals Drying behavior, diffusion modeling of cuminum cyminum L. undergoing microwave-assisted fluidized bed drying

2018 ◽  
Author(s):  
Gholamreza Askari ◽  
Atefe Babaki ◽  
Zahra Emamdjomeh
Keyword(s):  
Fluidized Bed ◽  
Effective Diffusivity ◽  
Air Velocity ◽  
Cuminum Cyminum ◽  
Fluidized Bed Dryer ◽  
Microwave Assisted ◽  
Air Temperatures ◽  
Drying Behavior ◽  
Fluidized Bed Drying ◽  
Kinetics Of

In order to conserve cuminum cyminum L. during long storage periods, the drying kinetics of this seed undergoing microwave-assisted fluidized bed dryer at various microwave output power (300, 600 and 900w), air velocity (10, 15 and 20 m/s) and air temperatures (45, 55 and 65ᵒc) were studied. The main aim of this research is developing a mathematical model of mass transfer to investigate the microwave-assisted fluidized bed drying of cuminum cyminum L. seed. In this paper, we tried to discover a good model to evaluate moisture effective diffusivity (Deff). Keywords: cuminum cyminum L, microwave-assisted drying, mathematical modeling,

A Short Review on Fluidized Bed Dryer

2021 ◽  
pp. 104-105
Author(s):  
Akash H. Mali ◽  
Aditya R. Nikam ◽  
Azam Z. Shaikh.
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Fluidized Bed ◽  
Short Review ◽  
High Heat ◽  
Drying Process ◽  
Drying Time ◽  
Fluidized Bed Dryer ◽  
Advantages And Disadvantages ◽  
Fluidized Bed Drying

This artical also discusses about demostration of fluidized bed dryer with principle and application and other processing. This has lead to development of thechnology, process and equipments which not only reduce time but also increasing the output. A Fluidized bed dryer significantely reduce drying time, compared with vaccum dryer or tray dryer. In the pharmacutical industry, fluidized bed dryer are typically used for pellets drying, coating and granulation. Fluidized bed drying are very well known to yield high heat and mass transfer and hence adopted to many industrial drying process particularly pharmacy product. In this paper we show construction, working of the fluidized bed dryer. It work on the drying principle. It has several advantages and disadvantages.

scholarly journals STIRRED FLUIDIZED-BED DRYER OF REGENERATED ION EXCHANGER PARTICLES

2014 ◽  
Vol 54 (3) ◽  
pp. 231-239
Author(s):  
Michal Pěnička ◽  
Pavel Hoffman ◽  
Ivan Fořt
Keyword(s):  
Fluidized Bed ◽  
Spherical Shape ◽  
Ion Exchanger ◽  
Favourable Effect ◽  
Drying Process ◽  
Batch Mode ◽  
Drying Time ◽  
Fluidized Bed Dryer ◽  
Mechanical Stirring ◽  
Fluidized Bed Drying

<p class="TextCxSpFirst">This article describes intensification of the fluidized-bed drying process for regenerated spherical-shape ion exchanger particles in the batch mode, achieved by a mechanical stirrer in the fluidized bed layer of the dried particles. The effect of the mechanical stirring system on the drying process was examined.</p> <p class="TextCxSpLast">Calculations as well as results of comparison measurements provide evidence of a favourable effect of stirring on the total drying time as compared to the initial unstirred system. The regenerated ion exchanger particles pass to the fluid state in a shorter time and the ultimate total drying time is thus more than 60% shorter.</p>

scholarly journals KARAKTERISTIK FISIKOKIMIA PATI SAGU HASIL PENGERINGAN SECARA FLUIDISASI MENGGUNAKAN ALAT PENGERING CROSS FLOW FLUIDIZED BED BERTENAGA SURYA DAN BIOMASSA

REAKTOR ◽  
2011 ◽  
Vol 13 (3) ◽  
pp. 155 ◽  
Author(s):  
Abadi Jading ◽  
Eduard Tethool ◽  
Paulus Payung ◽  
Sarman Gultom
Keyword(s):  
Chemical Composition ◽  
Fluidized Bed ◽  
Cross Flow ◽  
Physicochemical Characteristics ◽  
Sago Starch ◽  
Drying Time ◽  
Fluidized Bed Dryer ◽  
Conventional Drying ◽  
Fluidized Bed Drying

PHYSICOCHEMICAL CHARACTERISTICS OF SAGO STARCH OBTAINED FROM FLUIDIZED BED DRYING USING SOLAR AND BIOMASS POWERED CROSS FLOW FLUIDIZED BED DRYER. The research aim is to study the comparative quality of sago starch drying results using cross flow fluidized bed dryer powered by solar and biomass in conventional drying, particularly the chemical composition and physicochemical characteristics. This research was conducted through a drying phase of wet sago starch using a cross flow fluidized bed dryer, and drying in conventional as well as dried sago starch quality testing results are drying. The results of this study indicate that dry sago starch which has been drained by means of cross flow fluidized bed dryer has a chemical composition that does not vary much with starch which is dried by conventional drying, so that the dried sago starch produced by the dryer is very good. On the other hand the use of dryers is the more correct because the physicochemical properties of sago starch using a low drying temperature and drying time is short. Tujuan penelitian ini adalah mempelajari perbandingan kualitas pati sagu hasil pengeringan menggunakan alat pengering cross flow fluidized bed bertenaga surya dan biomassa dengan pengeringan secara konvensional, khususnya komposisi kimia dan karakteristik fisikokimia. Penelitian ini dilakukan melalui beberapa tahapan yaitu pengeringan pati sagu basah menggunakan alat pengering cross flow fluidized bed, pengeringan secara konvensional serta pengujian kualitas pati sagu kering hasil pengeringan. Hasil dari penelitian ini menunjukkan bahwa pati sagu kering yang telah dikeringkan dengan alat pengering cross flow fluidized bed memiliki komposisi kimia yang tidak berbeda jauh dengan pati yang dikeringkan dengan cara pengeringan secara konvensional, sehingga pati sagu kering yang dihasilkan oleh alat pengering tersebut sangat baik. Di sisi lain penggunaan alat pengering ini semakin memperbaiki sifat fisikokimia pati sagu sebab menggunakan suhu pengeringan yang rendah dan waktu pengeringan yang singkat.   Kata Kunci: pengering unggun terfluidakan; fisikokimia; pati sagu

scholarly journals Drying characteristics of red chili in a swirling fluidized bed dryer: An experimental study

2018 ◽  
Vol 225 ◽  
pp. 06007
Author(s):  
Mohd Azlan Zulkarnain ◽  
Nor Farhanim Md Rashid ◽  
Ahmmad Shukrie Md Yudin
Keyword(s):  
Fluidized Bed ◽  
Conventional Method ◽  
Weight Reduction ◽  
Agricultural Product ◽  
Drying Process ◽  
Drying Time ◽  
Drying Characteristics ◽  
Fluidized Bed Dryer ◽  
Inclination Angles ◽  
Time Required

Red chili is an agricultural product that contains high moisture. In this study, the drying process of red chili was conducted by using two methods which are conventional method of drying under the sun and by using swirling fluidized bed dryer. A fluidized bed column of 108 mm in diameter with slotted distributor of 45° inclination angles was used in the experiment. Result of drying by using conventional method showed that for 1kg of sample the drying time was 13 days with 212g weight reduction and the color of the red chili changed from red to dark red. Meanwhile for swirling fluidized bed dryer the time required was 4 days, 200g weight reduction and the color of red chili maintained. Based on the results obtained, the drying of red chili by using swirling fluidized bed dryer is more efficient as compared to drying by using conventional method.

scholarly journals Drying tea in a kilburn vibro fluid bed dryer

2014 ◽  
Vol 11 (1) ◽  
pp. 153-158 ◽  
Author(s):  
M Akhtaruzzaman ◽  
MR Ali ◽  
MM Rahman ◽  
MS Ahamed
Keyword(s):  
Moisture Content ◽  
Fluidized Bed ◽  
Dynamic Equilibrium ◽  
Initial Moisture Content ◽  
Drying Time ◽  
Fluidized Bed Dryer ◽  
Moisture Contents ◽  
Fluid Bed ◽  
Fluidized Bed Drying ◽  
Drying Curve

The fluidized bed drying principles for drying of tea in Bangladesh is thoroughly studied. The experiments were conducted to determine the drying curve, drying time, drying constant and dynamic equilibrium moisture contents of tea at the Bangladesh Tea Research Institute. Drying of tea in a fluidized bed dryer (Kilburn Vibro Fluid Bed Dryer) takes only 20 min for drying from an initial moisture content of 69.1% to a final moisture content of 2.8%. Temperatures of drying air were recorded to be 130°C at the inlet and 90°C at the outlet. The drying constant was found to be 31.05 h-1 and the dynamic equilibrium moisture contents were in the range of 18.3 to 2.0%. Finally the principle of fluidized bed drying was compared with the principle of conventional endless chain pressure type drying. DOI: http://dx.doi.org/10.3329/jbau.v11i1.18227 J. Bangladesh Agril. Univ. 11(1): 153-158, 2013

Teknik Pengeringan Pati Sagu dengan Menggunakan Alat Pengering Cross Flow Fluidized Bed

Agrotek ◽  
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Abadi Jading ◽  
Paulus Payung ◽  
Eduard Tethool ◽  
Reniana Reniana
Keyword(s):  
Moisture Content ◽  
Fluidized Bed ◽  
Cross Flow ◽  
National Standard ◽  
Sago Starch ◽  
Drying Process ◽  
Drying Time ◽  
Fluidized Bed Dryer ◽  
Research Goal ◽  
C 50

<em>Sago starch drying done to reduce the moisture content in starch, so as to increase the shelf life and quality of dry starch. The drying process should be done while maintaining the physicochemical properties of sago starch. The research goal is to find the proper drying techniques to produce dried sago starch has a moisture content corresponding to the Indonesian National Standard (SNI). The experiments were performed three times with variations in temperature 40<sup>o</sup>C, 50<sup>o</sup>C, and 60<sup>o</sup>C. The moisture content of sago starch obtained at temperatures 40<sup>o</sup>C, 50<sup>o</sup>C, and 60<sup>o</sup>C, respectively 13.75% wb, 13.50% wb and 13.42% wb. Drying time at drying temperature of 40<sup>o</sup>C, 50<sup>o</sup>C, and 60<sup>o</sup>C respectively 5.5 hours, 4 hours, and 3 hours. A good drying sago starch using cross flow fluidized bed dryer at a temperature of 60�C ie, it reduces the moisture content more quickly in accordance with the SNI, and gelatinization does not occur during the drying process.</em>

scholarly journals Fluidized Bed Drying of Pumpkin (Cucurbita sp.) Seeds

Foods ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 147 ◽  
Author(s):  
Saheeda Mujaffar ◽  
Sheena Ramsumair
Keyword(s):  
Fluidized Bed ◽  
Crude Protein ◽  
Agricultural Waste ◽  
Fluidized Bed Dryer ◽  
Rate Period ◽  
Drying Behavior ◽  
Pumpkin Seeds ◽  
Fluidized Bed Drying ◽  
Fresh Cut ◽  
Pumpkin Powder

Pumpkin seeds are a major agricultural waste from the fresh-cut produce industry. The objective of this study was to investigate the drying behavior of untreated, whole pumpkin seeds in a fluidized bed dryer at 50–80 °C (2.87 m/s), with a view to producing a high-quality pumpkin powder from dried seeds. Seeds were dried at 50–80 °C to an average equilibrium moisture value of 0.035 to 0.006 g H2O/g DM (3.4 to 0.6% wb). Drying occurred in the falling rate period only and drying rate constants ranged from 0.0226 to 0.0900 1/min with corresponding diffusivity values for the first falling-rate period ranging from 4.68 to 18.63 × 10−10 m2/s. The activation energy (Ea)—for the first falling rate period was determined to be 43.9 kJ/mol. Of the nineteen thin layer models tested, the Alibas model could be successfully used as a general model to predict the Moisture Ratio (MR) data for all temperatures investigated. After drying, seeds were blended to produce powders, which were found to be high in fat, crude protein and fiber.

Designing and Optimizing a Neural Network for the Modeling of a Fluidized-Bed Drying Process

2002 ◽  
Vol 41 (9) ◽  
pp. 2262-2269 ◽  
Author(s):  
José A. Castellanos ◽  
María C. Palancar ◽  
José M. Aragón
Keyword(s):  
Neural Network ◽  
Fluidized Bed ◽  
Drying Process ◽  
Fluidized Bed Drying
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