Advanced structures of reversal multi-stage flash desalination

Emad Ali; Jamel Orfi; Hany AlAnsary; Saleh Baakeem; Ahmad S. Alsaadi; Noreddine Ghaffour

doi:10.1016/j.desal.2023.117095

Advanced structures of reversal multi-stage flash desalination

Emad Ali^*, Jamel Orfi, Hany AlAnsary, Saleh Baakeem, Ahmad S. Alsaadi, Noreddine Ghaffour

^*Corresponding author for this work

Environmental Science and Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (SciVal)

Abstract

Three different modifications of the reversal multi-stage flash (MSF) plant are proposed and compared. One configuration consists of hybrid MSF and membrane distillation (MD), denoted as HYB, where the MD is linked to the MSF to leverage the thermal energy of the MSF outlet streams. The other configurations comprise cascaded MSF blocks connected sequentially to harness the thermal energy of the reject brine. One of the cascades uses independent external cooling water and is termed ICB while the other, termed CCB, uses the seawater intake to recover the heat in the brine cooler reducing the feed heating duty. Simulation indicated that the ICB possesses the highest recovery ratio of 33.6 % and the lowest specific area requirement of 327 m²/(kg/s) but the largest specific energy consumption of 320 kWh/m³. The CCB has the lowest specific energy consumption of 139 kWh/m³ and highest GOR of 4.9 but the lowest recovery ratio of 18.3 %. However, if the reversal MSF is powered by free waste heat, CCB possesses the minimum cooling demand and hence specific energy requirements. However, it has the minimum recovery ratio. Alternatively, the HYB can be argued as the best structure as it owns the second lowest energy consumption and second higher recovery ratio.

Original language	English (US)
Article number	117095
Journal	Desalination
Volume	571
DOIs	https://doi.org/10.1016/j.desal.2023.117095
State	Published - Feb 1 2024

Keywords

Cascading
Hybrid
Membrane distillation
Multi stage flash
Water desalination

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science
Water Science and Technology
Mechanical Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.desal.2023.117095

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title = "Advanced structures of reversal multi-stage flash desalination",

abstract = "Three different modifications of the reversal multi-stage flash (MSF) plant are proposed and compared. One configuration consists of hybrid MSF and membrane distillation (MD), denoted as HYB, where the MD is linked to the MSF to leverage the thermal energy of the MSF outlet streams. The other configurations comprise cascaded MSF blocks connected sequentially to harness the thermal energy of the reject brine. One of the cascades uses independent external cooling water and is termed ICB while the other, termed CCB, uses the seawater intake to recover the heat in the brine cooler reducing the feed heating duty. Simulation indicated that the ICB possesses the highest recovery ratio of 33.6 % and the lowest specific area requirement of 327 m2/(kg/s) but the largest specific energy consumption of 320 kWh/m3. The CCB has the lowest specific energy consumption of 139 kWh/m3 and highest GOR of 4.9 but the lowest recovery ratio of 18.3 %. However, if the reversal MSF is powered by free waste heat, CCB possesses the minimum cooling demand and hence specific energy requirements. However, it has the minimum recovery ratio. Alternatively, the HYB can be argued as the best structure as it owns the second lowest energy consumption and second higher recovery ratio.",

keywords = "Cascading, Hybrid, Membrane distillation, Multi stage flash, Water desalination",

author = "Emad Ali and Jamel Orfi and Hany AlAnsary and Saleh Baakeem and Alsaadi, {Ahmad S.} and Noreddine Ghaffour",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2024",

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doi = "10.1016/j.desal.2023.117095",

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T1 - Advanced structures of reversal multi-stage flash desalination

AU - Ali, Emad

AU - Orfi, Jamel

AU - AlAnsary, Hany

AU - Baakeem, Saleh

AU - Alsaadi, Ahmad S.

AU - Ghaffour, Noreddine

PY - 2024/2/1

Y1 - 2024/2/1

N2 - Three different modifications of the reversal multi-stage flash (MSF) plant are proposed and compared. One configuration consists of hybrid MSF and membrane distillation (MD), denoted as HYB, where the MD is linked to the MSF to leverage the thermal energy of the MSF outlet streams. The other configurations comprise cascaded MSF blocks connected sequentially to harness the thermal energy of the reject brine. One of the cascades uses independent external cooling water and is termed ICB while the other, termed CCB, uses the seawater intake to recover the heat in the brine cooler reducing the feed heating duty. Simulation indicated that the ICB possesses the highest recovery ratio of 33.6 % and the lowest specific area requirement of 327 m2/(kg/s) but the largest specific energy consumption of 320 kWh/m3. The CCB has the lowest specific energy consumption of 139 kWh/m3 and highest GOR of 4.9 but the lowest recovery ratio of 18.3 %. However, if the reversal MSF is powered by free waste heat, CCB possesses the minimum cooling demand and hence specific energy requirements. However, it has the minimum recovery ratio. Alternatively, the HYB can be argued as the best structure as it owns the second lowest energy consumption and second higher recovery ratio.

AB - Three different modifications of the reversal multi-stage flash (MSF) plant are proposed and compared. One configuration consists of hybrid MSF and membrane distillation (MD), denoted as HYB, where the MD is linked to the MSF to leverage the thermal energy of the MSF outlet streams. The other configurations comprise cascaded MSF blocks connected sequentially to harness the thermal energy of the reject brine. One of the cascades uses independent external cooling water and is termed ICB while the other, termed CCB, uses the seawater intake to recover the heat in the brine cooler reducing the feed heating duty. Simulation indicated that the ICB possesses the highest recovery ratio of 33.6 % and the lowest specific area requirement of 327 m2/(kg/s) but the largest specific energy consumption of 320 kWh/m3. The CCB has the lowest specific energy consumption of 139 kWh/m3 and highest GOR of 4.9 but the lowest recovery ratio of 18.3 %. However, if the reversal MSF is powered by free waste heat, CCB possesses the minimum cooling demand and hence specific energy requirements. However, it has the minimum recovery ratio. Alternatively, the HYB can be argued as the best structure as it owns the second lowest energy consumption and second higher recovery ratio.

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KW - Water desalination

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Advanced structures of reversal multi-stage flash desalination

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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