A comprehensive review of fluidized bed drying: Sustainable design approaches, hydrodynamic and thermodynamic performance characteristics, and product quality

Majumder, Prasanta; Deb, Bachu; Gupta, R.; Sablani, Shyam S.

doi:10.1016/j.seta.2022.102643

Cited by 11 publications

(7 citation statements)

References 97 publications

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“…Majumder et al presented a review on fluidized bed drying in which they discussed in detail various technical approaches. 219 Electrically heated fluidized beds have been used in drying processes to remove moisture quickly and efficiently from materials, such as food products or pharmaceuticals. In this process, the material to be dried is placed in the fluidized bed, and electric heating elements are used to heat the bed of solid particles.…”

Section: Applicationsmentioning

confidence: 99%

“…Some of these methods can be combined and the term hybrid drying is sometimes used to describe such a system. 219 The most common drying method for industrial processes is hot air drying. In this method, the material is placed in a chamber where hot air is circulated around it, causing the moisture to evaporate.…”

Section: Applicationsmentioning

confidence: 99%

“…There are many methods for drying, including hot air drying, contact drying, infrared drying, freeze-drying, fluidized bed drying, and dielectric drying. Some of these methods can be combined and the term hybrid drying is sometimes used to describe such a system . The most common drying method for industrial processes is hot air drying.…”

Section: Applicationsmentioning

confidence: 99%

“…This method can be used for a wide range of materials, including powders, granules and liquids, and it can be easily scaled up or scaled down to meet the needs of different production volumes. Majumder et al presented a review on fluidized bed drying in which they discussed in detail various technical approaches …”

Section: Applicationsmentioning

confidence: 99%

See 3 more Smart Citations

Electrically Heated Fluidized Beds─A Review

Ahmed,

Duchesne,

Tan

et al. 2024

Ind. Eng. Chem. Res.

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Fluidized beds heated via fossil fuel combustion have been widely used in industry for various applications. Heating these fluidized beds with clean electricity is emerging as a promising solution to reduce greenhouse gas emissions, improve overall energy efficiency, and for some applications, improve product quality. This review covers the development status of electrically heated fluidized beds (EHFBs) with a variety of heating principles, including Joule heating, induction heating, electromagnetic irradiation, sonication, plasma heating and gas preheating. An analysis of the advantages and disadvantages of these heating principles is presented, along with their suitability for different applications. Current and potential industrial applications using EHFBs for highly diversified processes, from material processing and biomass gasification to space exploration, are highlighted. Each application presents its own unique opportunities and challenges. The selection of a method to deliver electrical heat depends on the specific purpose of each application, materials involved, and the required configuration of the EHFB. Hence, methods to assess key performance indicators are described. To date, only a few applications have been commercialized, mostly for drying and material processing. Recommendations for EHFB advancement are provided so that their full potential can be realized.

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Section: Applicationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

See 2 more Smart Citations

Electrically Heated Fluidized Beds─A Review

Ahmed,

Duchesne,

Tan

et al. 2024

Ind. Eng. Chem. Res.

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“…Attention must be taken while choosing a relevant dryer, owing to a close-knit correlation among the bioactive compounds and drying conditions Hot air fluidized bed drying (FBD) makes it easier for the product to mix vigorously and interact with the drying air. This leads to augmented heat transfer, uniformly distributes heat throughout the batch, and produces consistently dried items (Majumder, Deb, et al, 2022;Mishra et al, 2022). Higher energy consumption (mostly fossil fuel) to deliver the larger mass flow rate of drying air is the major drawback of FBD.…”

mentioning

confidence: 99%

Investigation of osmosonication pretreated chili (Capsicum frutescensL.) drying in solar‐assisted fluidized bed dryer utilizing dehumidified air

Majumder

Deb

Gupta

2023

J Food Process Engineering

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The heat and moisture sensitivity of spices and a consistent supply of electrical energy is the challenging factors in developing a relevant drying system for rural applications. A novel solar-assisted fluidized bed dryer was developed for drying locally harvested unique spices like bird's eye chili (Capsicum frutescens L.). The chili was pretreated by the osmosonication method prior to drying to expedite the elimination of intercellular and intracellular moisture. In order to make the dryer more reliable, the recirculation strategy and dehumidified air supplied by liquid desiccant were acclimatized to constrict the heat loss through outflowing moist drying air. The experiments were conducted up to the permissible water activity (0.4-0.6) under variable drying conditions (50-70 C). By raising the ambient inlet temperature (maximum 25.9 C), the developed solar FBD was able to supply the drying air up to 50 C (in continuous mode) and a maximum of up to 65 C without aiding any heat energy sources except solar. It was found that osmosonication opened up the possibility of reducing the required drying temperature (#10 C) and energy consumption (up to #31.7%). The dried red chili was fortified by pretreatment, as it could retain more capsaicin (>6%) and reddishness (>5%) compared to untreated samples. The Fourier transform infrared (FTIR) analysis showed the structural integrity of pretreated samples. The relative humidity of the drying air could be reduced by as much as 5% using the composite lithium chloride and calcium chloride (35% + 5%) desiccant dehumidifier. Dehumidification of air was found advantageous, with an inclination to shorten the drying duration (about #0.5 h) and energy (#12.43%). Practical ApplicationsThere are various commercially valuable unique agro-products that are exclusively being produced in rural areas. The inaccessibility of relevant drying technology and inconsistency of grid electricity are the main constraints in the value addition of those products. Open sun drying is most popular in rural areas; however, it is not reliable, and the product quality can't maintain. The developed solar-assisted fluidized bed dryer utilizing dehumidifying air and integrated with osmosonication pretreatment could be a relevant technology for drying heat and moisture-sensitive products

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A review on applications of fine particles integrated with fluidization technologies

Song,

Yuan,

Zhu

2024

Can J Chem Eng

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Fine particles possess remarkable characteristics including extensive surface‐to‐weight ratios and diverse morphologies. Consequently, through the use of fluidization techniques, they have become favoured in various industrial processes, especially with continuous production. This review paper offers a comprehensive exploration of the integration of fine particle applications with fluidization technologies, with a specific focus on the Geldart Group C particles sized <25–40 μm. Although there are challenges with processing fine particles such as the strong cohesion in fluidized beds, recent progress, including the nanoparticle modulation method, has demonstrated potential solutions. These advancements render these cohesive particles applicable to industrial applications in different fields, including gas‐phase catalytic reactions, gas–solid fluidized bed coal beneficiation, ultrafine powder coating (UPC), pharmaceuticals, environmental sustainability, energy storage, and food processing. However, further research is needed to obtain a better understanding of fine particle fluidization in industrial settings in order to achieve larger‐scale implementation. In summary, this review provides a comprehensive overview of fine particle utilization integrated with fluidization technologies, demonstrating the potential in large‐scale industrial processes, and enabling significant advancements in practical applications.

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A comprehensive review of fluidized bed drying: Sustainable design approaches, hydrodynamic and thermodynamic performance characteristics, and product quality

Cited by 11 publications

References 97 publications

Electrically Heated Fluidized Beds─A Review

Electrically Heated Fluidized Beds─A Review

Investigation of osmosonication pretreated chili (Capsicum frutescensL.) drying in solar‐assisted fluidized bed dryer utilizing dehumidified air

A review on applications of fine particles integrated with fluidization technologies

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