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Application of Polymeric Membranes in Separation of Lube Oil Dissolved in MEK/Toluene Using OSN
, M.Sc. Thesis Sharif University of Technology ; Soltanieh, Mohammad (Supervisor)
Abstract
A kind of novel nanofiltration membrane process is proposed to solvent recovery from dewaxed lube oil stream in an energy-saving way. Most of the nanofiltration membrane materials are polymeric and cannot survive harsh conditions, for example, MEK contained solvents. Hence, high solubility of most of the polymeric materials in the solvent, especially in the MEK, is a challenge to researchers. To prepare a polymeric membrane that can solve the problem integrally skinned polyaniline (PAni) membrane was cast on a woven polyester backing material, and then crosslinked in two different ways, chemically and thermally, to make the membrane resistant in MEK (methyl ethyl ketene) and toluene for long...
Providing a Method for Developing Oil & Gas Project’s Time Schedule Automatically, based on Artificial Intelligence and Soft Computing
, M.Sc. Thesis Sharif University of Technology ; Habibi, Moslem (Supervisor)
Abstract
The project schedule is used as a key tool for managers to measure the progress of the project and prevent the deviation of the project from achieving its goals.Project scheduling started with manual methods. After a while, due to the increase in the size of projects and their complexity, the efficiency of traditional methods decreased. After the advances in computer sciences, scientists and experts had moved towards intelligentization and automation.During the past three decades, despite the attention of both academic and industrial fields towards automatic planning and scheduling of projects, Most of the researches focused on construction projects, and unfortunately, a few attentions have...
Using the Engineered Surface to Reduce the Adhesion Force of Ice to the Surface and Increase the Freezing Time of Water on the Surface
, M.Sc. Thesis Sharif University of Technology ; Moosavi, Ali (Supervisor) ; Hosseini, Vahid (Supervisor)
Abstract
Ice formation upon various surfaces could lead to many industry problems and result in unpleasant accidents. For instance, the formation of ice on wind turbine blades or airplanes/helicopter wings could cause catastrophic disasters. The methods used to address this problem usually require exogenous energy consumption or anti-ice ingredients. The energy or anti-ice ingredients usage has adverse environmental effects and should be replaced with better approaches. One of these approaches is utilizing modified anti-ice surfaces. In this method, by modifying surface features, such as physical asperities and surface energy, the icing time of the surface could be prolonged. These surfaces are...