کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7007680 | 1455252 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Assessment of a pilot system for seawater desalination based on vacuum multi-effect membrane distillation with enhanced heat recovery
ترجمه فارسی عنوان
ارزیابی یک سیستم خلبان برای شستشوی آب دریایی بر اساس تقطیر غشای چند اثر خلاء با بهبود بازیابی گرما
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
This work presents the evaluation of an innovative system based on vacuum multi-effect membrane distillation modules (V-MEMD) for seawater desalination at pilot scale. This four-effect unit introduces a remarkable modification from previous V-MEMD systems, consisting of the use of the seawater feed flow as cooling in the condenser, rather than a separate circuit. Preheating the feed in the condenser improved heat efficiency (maximum gained output ratio obtained for seawater was 3.2). Maximum distillate fluxes reached 8.5â¯lâ¯hâ1â¯mâ2 for hot feed temperature 75â¯Â°C and feed flow rate 150â¯lâ¯hâ1. Increasing both parameters to raise the productivity was hindered by the inability of the condenser to cope with all the steam generated in previous effects, resulting in overheating and overpressure. Furthermore, a loss of 40% of distillate production was measured due to the increase of seawater cooling temperature by 8â¯Â°C along the year. Finally, it was observed that scaling reduced distillate production up to 50%. Acid cleaning successfully removed scaling and restored the performance. Subsequently, the use of an antiscalant as a pre-treatment was sufficient to prevent it.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 443, 1 October 2018, Pages 110-121
Journal: Desalination - Volume 443, 1 October 2018, Pages 110-121
نویسندگان
J.A. Andrés-Mañas, A. Ruiz-Aguirre, F.G. Acién, G. Zaragoza,