A Novel Thermal Desalination Process Using Fluidized Bed

A self-heat recuperative seawater desalination process using fluidized bed evaporator with high recovery ratio (defined as product water flow rate divided by feed water flow rate) was proposed to develop a highly energy efficient desalination process. In the process, the feed seawater may cause an a...

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Main Authors: H. Mizuno, Y. Kansha, M. Ishizuka, A. Tsutsumi
Format: Article
Language:English
Published: AIDIC Servizi S.r.l. 2014-08-01
Series:Chemical Engineering Transactions
Online Access:https://www.cetjournal.it/index.php/cet/article/view/5332
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author H. Mizuno
Y. Kansha
M. Ishizuka
A. Tsutsumi
author_facet H. Mizuno
Y. Kansha
M. Ishizuka
A. Tsutsumi
author_sort H. Mizuno
collection DOAJ
description A self-heat recuperative seawater desalination process using fluidized bed evaporator with high recovery ratio (defined as product water flow rate divided by feed water flow rate) was proposed to develop a highly energy efficient desalination process. In the process, the feed seawater may cause an agglomeration derived from liquid bridge force between particles, which finally leads to defluidization. Thus, the influence of seawater feed on the fluidization was examined. Fluidizing gas velocity was changed as a parameter. The experimental results showed that the fluidizing gas velocity of more than 2.5 umf can prevent the agglomeration due to the liquid bridging. At the fluidizing gas velocity condition (u = 2.5 umf and 3.0 umf), small amount of agglomerations caused by solid bridge force was observed. However, these agglomerations did not strongly influence the fluidization and the seawater evaporation was maintained, which means that the fluidized bed can be used as an evaporator. Therefore, the novel thermal seawater desalination process using fluidized bed with high recovery ratio can be developed when the proper fluidizing gas velocity is selected.
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spelling doaj.art-5762ed00c815466d8e6cf90317b75bef2022-12-21T23:47:16ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162014-08-013910.3303/CET1439031A Novel Thermal Desalination Process Using Fluidized BedH. MizunoY. KanshaM. IshizukaA. TsutsumiA self-heat recuperative seawater desalination process using fluidized bed evaporator with high recovery ratio (defined as product water flow rate divided by feed water flow rate) was proposed to develop a highly energy efficient desalination process. In the process, the feed seawater may cause an agglomeration derived from liquid bridge force between particles, which finally leads to defluidization. Thus, the influence of seawater feed on the fluidization was examined. Fluidizing gas velocity was changed as a parameter. The experimental results showed that the fluidizing gas velocity of more than 2.5 umf can prevent the agglomeration due to the liquid bridging. At the fluidizing gas velocity condition (u = 2.5 umf and 3.0 umf), small amount of agglomerations caused by solid bridge force was observed. However, these agglomerations did not strongly influence the fluidization and the seawater evaporation was maintained, which means that the fluidized bed can be used as an evaporator. Therefore, the novel thermal seawater desalination process using fluidized bed with high recovery ratio can be developed when the proper fluidizing gas velocity is selected.https://www.cetjournal.it/index.php/cet/article/view/5332
spellingShingle H. Mizuno
Y. Kansha
M. Ishizuka
A. Tsutsumi
A Novel Thermal Desalination Process Using Fluidized Bed
Chemical Engineering Transactions
title A Novel Thermal Desalination Process Using Fluidized Bed
title_full A Novel Thermal Desalination Process Using Fluidized Bed
title_fullStr A Novel Thermal Desalination Process Using Fluidized Bed
title_full_unstemmed A Novel Thermal Desalination Process Using Fluidized Bed
title_short A Novel Thermal Desalination Process Using Fluidized Bed
title_sort novel thermal desalination process using fluidized bed
url https://www.cetjournal.it/index.php/cet/article/view/5332
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AT ykansha novelthermaldesalinationprocessusingfluidizedbed
AT mishizuka novelthermaldesalinationprocessusingfluidizedbed
AT atsutsumi novelthermaldesalinationprocessusingfluidizedbed