Study of a Melt Crystallization Process for Seawater Desalination  

作　　者：Anouar Rich Mostapha Siniti Denis Mangin Jean-Paul Klein Youssef Mandri Tijani Bounahmidi Ahmed Bouhaouss Stephane Veesler Mohamed El Ganaoui 

机构地区：[1]Equipe de Thermodynamique, Surface et Catalyse, Faculte des Sciences, Universite Chouaib Doukkali, El Jadida 24000, Maroc [2]LAGEP (Laboratoire d'Automatique et de Genie des Procedes), Universite Lyon 1, Villeurbanne 69622, France [3]LASPI (Laboratoire d'Analyse et Synthese des Proeedes Industriels), Ecole Mohammadia d'Ingenieurs, Universite Mohammed V,Rabat 10000, Maroc [4]LNGPE (Laboratoire des Nanostructures, Genie des Procedes et Environnement), Faculte des Sciences de Rabat, Universite Mohammed V, Rabat 10000, Maroe [5]CINaM-CNRS (Centre Interdisciplinaire de Nanosciences de Marseille-Centre National de la Recherche Scientifique), Campus de Luminy, Marseille 13288, France [6]LERMAB-IUT (Laboratoire d'Etude et de Recherche sur le Mat~riau Bois-Institut Universitaire de Technologie Longwy), Longwy, Universite de Lorraine, Cosnes et Romain F-54400, France

出　　处：《Journal of Mechanics Engineering and Automation》2015年第1期45-52,共8页机械工程与自动化（英文版）

摘　　要：The work aims to develop a process for freezing desalination of seawater on cold walls. The experiments were performed with water/NaCl solutions of different concentrations and with samples of seawater. The pilot crystallizer consists of a cooled tube immersed in a cylindrical double jacketed tank containing water to be treated. The complete process of desalination is conducted in two steps： the freezing step, leading to the crystallization of the ice layer and the sweating step, which consists of purifying the ice layer in depth by melting the impure zones. The systematic study of the influence of operating parameters has highlighted the important role of the cooling ramp and salinity of the solution on the purity of the ice produced. In the absence of stirring, the temperature of the double jacket also has a noticeable effect on the purity of the ice due to temperature gradients, and consequently, convection currents that may result in the solution. The results of this work show the feasibility of the technique and give a good indication of operating conditions that can be used to produce drinking water.

关 键 词：DESALINATION seawater melts crystallization SWEATING 

分 类 号：TQ465.1[化学工程—制药化工] P747[天文地球—海洋科学]