naa a22 4500 510821200 CHVBK 20180411083533.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11814-013-0009-8 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0009-8 Design of reverse osmosis networks for multiple freshwater production [Elektronische Daten] [Yanyue Lu, Anping Liao, Yangdong Hu] Reverse osmosis (RO) desalination, which produces multiple freshwater from seawater, has been studied in this work. An optimization method based on process synthesis has been applied to design the RO system. First, a simplified superstructure that contains all the feasible design for this desalination problem has been presented. In this structural representation, the stream split ratios and the logical expressions of stream mixing were employed, which can make the mathematical model easy to handle. Then, the membrane separation units employing the spiral wound reverse osmosis elements were described by using a pressure vessel model, which takes into account the pressure drop and the concentration changes in the membrane channel. The optimum design problem can be formulated as a mixedinteger non-linear programming (MINLP) problem, which minimizes the total annualized cost of the RO system. The cost equation relating the capital and operating cost to the design variables, as well as the structural variables, has been introduced in the objective function. The problem solution includes the optimal streams distribution, the optimal system structure and the operating conditions. The design method could also be used for the optimal selection of membrane element type in each stage and the optimal number of membrane elements in each pressure vessel. The effectiveness of this design methodology has been demonstrated by solving a desalination case. The comparisons with common industrial approach indicated that the integrative RO system proposed in this work is more economical, which can lead to significant capital cost and energy saving and provide an economically attractive desalination scheme. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Reverse Osmosis nationallicence Seawater Desalination nationallicence Optimum Design nationallicence Superstructure nationallicence Mathematical Model nationallicence Lu Yanyue Key Laboratory of Chemical and Biological Transforming Process, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, 530006, Nanning, P. R. China aut Liao Anping Key Laboratory of Chemical and Biological Transforming Process, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, 530006, Nanning, P. R. China aut Hu Yangdong College of Chemistry and Chemical Engineering, Ocean University of China, 266003, Qingdao, China aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/5(2013-05-01), 988-996 0256-1115 30:5<988 2013 30 11814 https://doi.org/10.1007/s11814-013-0009-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0009-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lu Yanyue Key Laboratory of Chemical and Biological Transforming Process, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, 530006, Nanning, P. R. China aut NATIONALLICENCE 700 1- Liao Anping Key Laboratory of Chemical and Biological Transforming Process, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, 530006, Nanning, P. R. China aut NATIONALLICENCE 700 1- Hu Yangdong College of Chemistry and Chemical Engineering, Ocean University of China, 266003, Qingdao, China aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/5(2013-05-01), 988-996 0256-1115 30:5<988 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer