Some Recent Research and Development in Drying Technologies: Product Perspective

Liu, Xiang; Lee, Dong Hoon

doi:10.1080/07373937.2015.1026986

Cited by 28 publications

(9 citation statements)

References 129 publications

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“…Drying process is considered as one of the energy‐intensive industrial processes and easily accounts for up to 20% of national industrial energy consumption 1 . Hence the quality of dried products is very important and seeks great care.…”

Section: Introductionmentioning

confidence: 99%

Influence of convective intermittent drying schemes on drying induced stress–strain of a 3D clay object

2020

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Drying process of industrial green in-process products especially those susceptible to cracking, need great care, and optimally arrangement of parameters of convective drying. Intermittent drying is a new technique in drying area and is a promising solution for product quality enhancement. The intermittent drying with variable air temperature and the intermittent drying with variable air humidity are the most used techniques. The current study is devoted to 3D modeling and simulation of intermittent drying with variations of both air humidity and temperature and it is then compared with each of the cases of the intermittent drying with variable air temperature and the intermittent drying with variable air humidity. It was observed that the best dried product quality was obtained in intermittent drying with periodic changes of air temperature. Vapor condensation in the intermittent drying with variable air humidity is an undesirable phenomenon that significantly reduces the effectiveness of this process.

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Section: Introductionmentioning

confidence: 99%

Influence of convective intermittent drying schemes on drying induced stress–strain of a 3D clay object

2020

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“…In fact, different pretreatments have been explored to improve heat and water flow during drying (Liu & Lee, ; Sagar & Kumar, ; Witrowa‐Rajchert, Wiktor, Sledz, & Nowacka, ; Yang, Zhang, Mujumdar, Zhong, & Wang, ), some of them by forming a porous structure to facilitate the mass transfer. For example, in freeze‐dried foods, a directional freezing process was developed to produce aligned channels (Qian & Zhang, ), which promote the water sublimation and allow obtaining foods with highly porous structure.…”

Section: Introductionmentioning

confidence: 99%

Improving the infrared drying and rehydration of potato slices using simple approaches: Perforations and ethanol

Rojas

Silveira

Augusto

2019

J Food Process Engineering

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The objective of this work was use ethanol and perforations as simple approaches to improve the infrared drying and rehydration of potato slices. Perforations were performed to study the effect of promoting routes to capillarity flow, while ethanol was impregnated in the samples to evaluate the effect of Marangoni flow. All pretreatments reduced the drying time compared to control treatment. However, a great time reduction was observed with P + E pretreatment: The synergistic combination of both treatments increased the drying rate in more than four times, reducing both drying time and the necessary energy by 44%. The samples with perforations (P and P + E) increased their rehydration rate as well as the water retention capacity. However, the pretreated samples with ethanol shows poor rehydration properties. Possible mechanisms were discussed. These results show simple approaches to enhance food drying and rehydration.

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“…[10][11][12][13][14][15] In this work, the thermogravimetry and differential scanning calorimetry (TG-DSC) were used to study the pyrolytic behavior of soybean straw and corn straw, and the pyrolytic kinetic parameters of these two crop straws were also analyzed by Coats-Redfern method. The alkali and alkaline earth metals present in biomass have an influence on thermal cracking, which could enhance the reaction rates and reduce the yield of bio-oil.…”

Section: Introductionmentioning

confidence: 99%

TG–DSC analysis of straw biomass pyrolysis and release characteristics of noncondensable gas in a fixed-bed reactor

Zhao

Wang

et al. 2016

Drying Technology

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Under the double pressures caused by the energy shortage and environmental damage, to exploit the agricultural wastes and convert into available clean fuels are becoming more and more urgent in modern society. The aim of learning the pyrolysis characteristics of soybean straw and corn straw, the non isothermal TG-DSC method was used in this work.The results showed that both of biomass feedstocks all underwent four different pyrolysis stages, with the increase of heating rate, the peak temperature shifted toward the high-temperature interval, and that the yield of bio-char also increased correspondingly; potassium had an influence on the thermal cracking of biomass, and that the existence form of potassium and impregnation increment of sylvite would result in the yield of bio-char was distinct. In addition, temperature and catalyst had a significant impact on the gaseous products of biomass pyrolysis. Increasing the pyrolysis temperature could enhance the yield of CO and H 2 , and CH 4 content reached the maximum at 600 °C. For both of the biomass, sylvite had a negative effect on the formation of CH 4 , and H 2 content of soybean straw reached a maximum with 5% K 2 CO 3 and corn straw with 5% KCl.2

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Some Recent Research and Development in Drying Technologies: Product Perspective

Cited by 28 publications

References 129 publications

Influence of convective intermittent drying schemes on drying induced stress–strain of a 3D clay object

Influence of convective intermittent drying schemes on drying induced stress–strain of a 3D clay object

Improving the infrared drying and rehydration of potato slices using simple approaches: Perforations and ethanol

TG–DSC analysis of straw biomass pyrolysis and release characteristics of noncondensable gas in a fixed-bed reactor

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