Modelling and techno-economic analysis of membrane distillation system for flue gas condensate cleaning

Imtisal-e- Noor, Mahrokh Samavati, Andrew Martin

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

In combined heat and power (CHP) plants, reverse osmosis (RO) based flue gas condensate treatment processes have shown several intrinsic problems including bio-fouling and higher electrical energy demand. In contrast, novel membrane separation techniques can operate at reduced electricity demand, provide better separation efficiency and are not prone to bio-fouling. As shown in our previous studies, membrane distillation (MD) has proven itself as a promising technique for such applications. MD is a thermally driven separation process where district heating (DH) can be considered as a viable heat source to comply with its required thermal energy demand. In the present study, a DH driven MD process is presented and evaluated. Performance model of MD system was first developed in MATLAB, based on previously performed experiments where semi-commercial air gap membrane distillation (AGMD) module was considered. This empirical model was then employed to design DH driven MD system in Aspen Plus for flue gas condensate cleaning at industrial scale. Furthermore, in order to evaluate the potential of the technology, feasibility study of the proposed system was performed. Results show the techno-economic viability of the presented DH integrated MD system. The estimated unit flue gas condensate treatment cost is found as low as 2.38 $/m3.
Original languageEnglish
Title of host publicationECOS 2020 -Proceedings of the 33RD International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
EditorsRyohei Yokoyama, Yoshiharu Amano
Place of PublicationOsaka, Japan
PublisherCurran Associates, Inc.
Pages2132-2140
ISBN (Print)9781713814061
Publication statusPublished - 2020
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems - Osaka, Japan
Duration: 29 Jun 20203 Jul 2020
Conference number: 33

Conference

ConferenceInternational Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
Abbreviated titleECOS
CountryJapan
CityOsaka
Period29/06/202003/07/2020

Keywords

  • CHP plants
  • District heating
  • Empirical modelling
  • Flue gas condensate
  • Membrane distillation
  • Techno-economic analysis

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