Innovative Energy‐Efficient Biomass Drying Based on Self‐Heat Recuperation Technology

Aziz, Muhammad; Fushimi, Chihiro; Kansha, Yasuki; Mochidzuki, Kazuhiro; Kaneko, Shozo; Tsutsumi, Atsushi; Matsumoto, Keigo; Hashimoto, Takao; Kawamoto, Noboru; Oura, Koji; Yokohama, Katsuhiko; Yamaguchi, Yoshiki; Kinoshita, Masaharu

doi:10.1002/ceat.201100065

Cited by 33 publications

(14 citation statements)

References 30 publications

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“…However, most of these drying techniques involve longer drying time and high amount of energy, resulting in poor quality of the dried products (Moses, Norton, Alagusundaram, & Tiwari, 2014). Although, Liu, Aziz, Kansha, Bhattacharya, andTsutsumi (2014, 2012), and Aziz et al (2011) suggested a new way of improving the existing conventional drying processes based on self-heat recuperation technology, however this method, which focuses mainly on increasing the energy efficiency of the drying processes is complex, and expensive to adapt. Thus, its limitation.…”

Section: Introductionmentioning

confidence: 99%

Recent advances of novel thermal combined hot air drying of agricultural crops

Onwude

Hashim

Chen

2016

Trends in Food Science & Technology

134

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a b s t r a c tBackground: Developing an efficient drying system with combined novel thermal and conventional hotair drying of agricultural crops has become potentially a viable substitute for conventional drying techniques. Due to the synergistic effect, the total energy and time required can be drastically reduced, and the final quality of agricultural crops preserved. The growing interest and research in recent years have already shown that novel thermal with hot-air drying technology can adequately be used in the drying of agricultural crops. Scope and approach: This review attempts to give a summary of recent advances in the research and applications of novel thermal combined hot-air drying technology for agricultural crops, with particular emphasis on the combination mode, process conditions, process-quality interaction, drying kinetics, energy demand and drying efficiency. Key findings and conclusions: The combination of novel thermal with hot-air drying provides distinctive opportunities in the development of advanced agricultural crop drying technologies. The most significant advantages of using the above method were the reduction in the drying time and energy consumption as well as, an increase in the drying rate and overall efficiency. More so, the application of infrared and hotair drying on agricultural crops is advantageous in obtaining dried products of better quality. In conclusion, the findings suggest that these technologies have great potentials. Therefore, more studies, especially in their industrial and commercial application are indispensable.

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Section: Introductionmentioning

confidence: 99%

Recent advances of novel thermal combined hot air drying of agricultural crops

Onwude

Hashim

Chen

2016

Trends in Food Science & Technology

134

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“…A comparison of simulated and experimentally determined height-averaged lignite drying kinetics in a fluid bed is given and discussed. The future work will be focused at the investigation (experimental and numerical) of new possibilities of reduction of energy consumption, similar to, for example, the new selfheat recuperation technology proposed by Aziz et al [45].…”

Section: Discussionmentioning

confidence: 99%

Fluid bed drying as upgrading technology for feasible treatment of Kolubara lignite

Erić¹,

Stakić²,

Banjac

2016

THERM SCI

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An overview of the current status of low-rank coal upgrading technologies is presented in the paper, particularly with respect to drying and dewatering procedures. In order to calculate the significant parameters of the moisture removal process, a model of convective coal drying in a fluid bed, based on the two-phase (bubbling) fluidization model proposed by Kunii and Levenspiel, is developed and presented. Product-specific data (intraparticle mass transfer, gas-solid moisture equilibrium) related to the particular coal variety addressed here (Kolubara lignite) are obtained through preliminary investigations. Effective thermal conductivity of the packed bed as defined by Zehner/Bauer/Schlunder is used to define heat transfer mechanisms occurring in the suspension phase of the fluid bed. A completely new set of experimental data obtained has been successfully used to validate the model additionally.

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“…Moreover, according to eq 12, the exergy of compression/ expansion work (E w ) equals to the exergy increase/decrease between the outgoing and the incoming streams of the compressor, the blower, or the expander and can be calculated by eq 15 The exergy of input work in the modified SHR-FBD is (16) where E cp and E bl are the input exergy through the compressor and the blower, respectively, and E ex is the output exergy through the expander. The exergy of input work is calculated as 610.0 kW (E cp = 764.7 kW, E bl = 60.9 kW, and E ex = 215.6 kW) according to eq 15 and eq 16.…”

Section: Exergy Analysis Of the Proposed Processmentioning

confidence: 99%

“…Studies found that the self-heat recuperative fluidized bed dryer (SHR-FBD) consumes about 1/4 and 2/3 of the energy consumed by a conventional heat-recovery dryer (CHR) and a mechanical vapor recompression dryer, respectively. 16 However, the previous design did not consider the following crucial factors for the actual biomass drying process.…”

Section: Introductionmentioning

confidence: 99%

“…15,16 A fluidized bed dryer (FBD) with immersed horizontal tubes was selected as an evaporator according to its high thermal efficiency, uniform temperature distribution, and rapid heat and mass transfer rate. Studies found that the self-heat recuperative fluidized bed dryer (SHR-FBD) consumes about 1/4 and 2/3 of the energy consumed by a conventional heat-recovery dryer (CHR) and a mechanical vapor recompression dryer, respectively.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Exergy Analysis of Biomass Drying Based on Self-Heat Recuperation Technology and Its Application to Industry: a Simulation and Experimental Study

Liu

Aziz

Fushimi

et al. 2012

Ind. Eng. Chem. Res.

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An energy-saving process for biomass drying was proposed to improve the overall energy efficiency by using selfheat recuperation technology for future industrial use. Energy analysis based on the simulation results showed that the primary energy consumption and CO 2 emission in the proposed process can be decreased to 74% and 36% of that of the conventional heat recovery dryer, respectively. Moreover, exergy analysis was conducted to clarify exergy losses in the proposed drying process, and further energy-saving solutions were raised to minimize exergy loss based on exergy recuperation theory. The experimental results indicated that three times of the minimum fluidization velocity was a necessary condition for good fluidization. It was also confirmed that the proposed fluidized bed dryer for biomass drying achieves stable performance for more than 2 h in the experiments.

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Innovative Energy‐Efficient Biomass Drying Based on Self‐Heat Recuperation Technology

Cited by 33 publications

References 30 publications

Recent advances of novel thermal combined hot air drying of agricultural crops

Recent advances of novel thermal combined hot air drying of agricultural crops

Fluid bed drying as upgrading technology for feasible treatment of Kolubara lignite

Exergy Analysis of Biomass Drying Based on Self-Heat Recuperation Technology and Its Application to Industry: a Simulation and Experimental Study

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