کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7007841 1455257 2018 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multi-Effect Vacuum Membrane Distillation systems: Model derivation and calibration
ترجمه فارسی عنوان
سیستم تقطیر غشای خلاء چند منظوره: مدل سازی و کالیبراسیون مدل
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
Vacuum Membrane Distillation (VMD) has been shown to be a promising desalination approach when going beyond the application range of Reverse Osmosis. Multi-stage arrangements in particular benefit from system-inherent heat recovery and thus yield low specific energy demand. Nevertheless, these systems show a complex behavior and therefore require a careful design, especially for higher salt concentrations which provide significant vapor pressure reduction. Previous experimental studies showed a need for a reliable system simulation tool, which we derived and calibrated in this work. The focus was on accurate modeling of the physical behavior, especially the multi-staging, polarization effects and different salt solutions up to their solubility limit. The model calibration and verification were based on results yielded by a novel triple channel VMD bench scale test cell, as well as technical scale system results from experiments with a memsys 2/4-stage Multi-Effect Vacuum Membrane Distillation (MEVMD) plant. The developed model was able to reproduce the system behavior and provides a tool for system optimization while providing insight into channel coupling, pressure staging, and phenomena like self-reduction of the number of working stages with rising feed salt concentration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 438, 15 July 2018, Pages 97-111
نویسندگان
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