Investigations into the drying kinetics of biomass in a fluidized bed dryer using electrostatic sensing and digital imaging techniques

Fuel ◽  
2022 ◽  
Vol 308 ◽  
pp. 122000
Author(s):  
Yong Yan ◽  
Bojian Qi ◽  
Wenbiao Zhang ◽  
Xueyao Wang ◽  
Qingqing Mo
Keyword(s):  
Fluidized Bed ◽  
Digital Imaging ◽  
Imaging Techniques ◽  
Drying Kinetics ◽  
Fluidized Bed Dryer ◽  
Kinetics Of

Evaluation of thin-layer models for describing drying kinetics of poplar wood particles in a fluidized bed dryer

2016 ◽  
Vol 35 (6) ◽  
pp. 723-730 ◽  
Author(s):  
Mohammad Arabi ◽  
Mohammad Mehdi Faezipour ◽  
Mohammad Layeghi ◽  
Majid Khanali ◽  
Hamid Zareahosseinabadi
Keyword(s):  
Thin Layer ◽  
Fluidized Bed ◽  
Drying Kinetics ◽  
Poplar Wood ◽  
Fluidized Bed Dryer ◽  
Wood Particles ◽  
Kinetics Of

The drying kinetics of bird’s chillies in a fluidized bed dryer

2007 ◽  
Vol 79 (2) ◽  
pp. 695-705 ◽  
Author(s):  
S.M. Tasirin ◽  
S.K. Kamarudin ◽  
K. Jaafar ◽  
K.F. Lee
Keyword(s):  
Fluidized Bed ◽  
Drying Kinetics ◽  
Fluidized Bed Dryer ◽  
Kinetics Of

scholarly journals Modeling the Drying Kinetics of Green Bell Pepper in a Heat Pump Assisted Fluidized Bed Dryer

2015 ◽  
Vol 39 (2) ◽  
pp. 98-108 ◽  
Author(s):  
S.M. Jafari ◽  
V. Ghanbari ◽  
M. Ganje ◽  
D. Dehnad
Keyword(s):  
Fluidized Bed ◽  
Heat Pump ◽  
Drying Kinetics ◽  
Bell Pepper ◽  
Fluidized Bed Dryer ◽  
Kinetics Of

Drying Kinetics of Granules in a Fluidized Bed Dryer

2011 ◽  
Vol 412 ◽  
pp. 459-462
Author(s):  
Lan Chen ◽  
Chun Hua Lin ◽  
Yun Hui Xie ◽  
Song Du
Keyword(s):  
Fluidized Bed ◽  
Scale Up ◽  
Thermal Conditions ◽  
Drying Kinetics ◽  
Drying Methods ◽  
Relevant Parameter ◽  
Industrial Processing ◽  
Fluidized Bed Dryer ◽  
High Efficient ◽  
Kinetics Of

Drying is one of the most important methods for industrial processing since moisture content is an extremely relevant parameter affecting the crucial properties of final products. Nowadays, fluidized bed drying technology is widely employed in various industries. Comparing to other drying methods, fluidized beds generate high efficient thermal conditions. In the current study, drying kinetics of cornstarch granules was investigated in a fluidized bed dryer. The drying experiments were performed at different temperatures and velocities of the inlet drying air and in different granule sizes. The results showed that air temperature had the most significant effect on the drying rate among the three variables. Five drying empirical models were fitted to the experimental moisture data and were evaluated using the determination coefficient and chi-square. Four of the models were found to be suitable for describing the drying behavior of cornstarch granules. Therefore, it is possible for them to be applied to estimate the drying end-point of cornstarch granules as well as to design and scale up of the drying process for the similar products in the fluidized bed dryer.

scholarly journals Drying Kinetics of Eggplant (Solanum melongena) in a Fluidized Bed Dryer: Experimental Evaluation and Modelling

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Mohamed A. ElKhodiry ◽  
Shaima R. Suwaidi ◽  
Melika Taheri ◽  
Hams Elwalid ◽  
Dina ElBaba ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Solanum Melongena ◽  
Moisture Diffusivity ◽  
Drying Kinetics ◽  
Moisture Ratio ◽  
Air Velocity ◽  
Rehydration Ratio ◽  
Fluidized Bed Dryer ◽  
Ratio Data ◽  
Kinetics Of

The drying kinetics of eggplant were studied experimentally in a laboratory-scale fluidized bed dryer. Experiments were conducted at drying temperatures of 60, 70, and 80°C and at constant air velocity of 3.10 ms−1. The drying rate and moisture ratio were determined as a function of time. At any given temperature, only the falling rate period was observed during the drying process. Effective moisture diffusivity was in the range 2.667–4.311 × 10−8 m2/s while activation energy of 23.5 kJ mol−1 was obtained from the Arrhenius equation. The experimental moisture ratio data was fitted to ten mathematical models. Statistical analysis showed that the by Demir et al. has the best fit quality. In terms of product quality, the dried samples had low rehydration ratio of 4.889. In addition, compared to direct sunlight drying, the dried product from the fluidized bed dryer exhibited better color quality.

Drying Kinetics of Oil Palm Frond Particles in an Agitated Fluidized Bed Dryer

2012 ◽  
Vol 30 (6) ◽  
pp. 619-630 ◽  
Author(s):  
Ifa Puspasari ◽  
Meor Zainal Meor Talib ◽  
Wan Ramli Wan Daud ◽  
Siti Masrinda Tasirin
Keyword(s):  
Fluidized Bed ◽  
Oil Palm ◽  
Drying Kinetics ◽  
Fluidized Bed Dryer ◽  
Oil Palm Frond ◽  
Kinetics Of ◽  
Palm Frond

Design of Hybrid Drying- Dedusting Unit Processor for Rough Rice Processing

2008 ◽  
Vol 4 (6) ◽  
Author(s):  
Law Chung Lim ◽  
Wan Ramli Wan Daud
Keyword(s):  
Moisture Content ◽  
Fluidized Bed ◽  
Separation Efficiency ◽  
Cross Flow ◽  
Drying Kinetics ◽  
Rice Husks ◽  
Two Stage ◽  
Fluidized Bed Dryer ◽  
Rough Rice ◽  
Superficial Gas Velocity

Advanced drying technology enables drying of rough rice and dedusting of rice husks to be carried out simultaneously in the same unit processor. This paper reports the efficiency of dedusting of rice husks in a two-stage inclined cross flow fluidized bed dryer and the drying kinetics of rough rice in a batch fluidized bed dryer as well as the conceptual design of a hybrid drying – dedusting unit processor. Experimental works had been carried out using rough rice (a Group D particle according to Geldart classification of powders) in a 2.5 m height two-stage inclined fluidized bed column of cross sectional area of 0.61m x 0.15m and a 3 m high batch fluidized bed dryer. The objectives of the study was to investigate the separation efficiency of dedusting of rice husks in the two-stage cross flow fluidized bed dryer and to study the drying kinetics of rough rice drying in the batch fluidized bed dryer. The experimental results showed that the dedusting separation efficiency at low superficial gas velocity gave unsatisfactory separation of merely 40% of rice husks. At higher superficial gas velocity, separation efficiency of rice husks as high as 93% was achieved. In addition, higher distributor inclination angle gave slightly improved separation efficiency. The drying kinetics showed that the residence time that is required to reduce the moisture content of rough rice to 18% (intermediate storage moisture content for second stage drying) is 3 minutes whereas the residence time that is required to reduce the moisture content to 13% (desirable final moisture content) is approximately 10 minutes regardless of the effect of kernel cracking. It was also found that higher drying temperatures gave higher drying rate. A conceptual design has been developed based on the results obtained in the studies. In order to maximize the heat utilization and to carry out two processes viz. dedusting and drying in one unit processor, it is suggested that drying – dedusting can be carried out in a multistage mode where drying is taken place at each stage while dedusting is taking place at the upper stage. This concept can be applied to a packed bed or a fluidized bed unit processor.

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,

Sign in / Sign up

Export Citation Format

Share Document