کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6467734 1423259 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
By-line NMR emulsion droplet sizing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
By-line NMR emulsion droplet sizing
چکیده انگلیسی


- NMR PFG by-line measurements of emulsion droplet sizes were successfully applied.
- NMR PFG method used to assess the efficacy of various demulsifiers in a flow loop.
- Difftrain PFG pulse sequence integrated into an emulsification control loop.

By-line Nuclear Magnetic Resonance (NMR) measurements of emulsion droplet size distributions are presented based on pulsed field gradient (PFG) measurements. These are performed on temporarily immobilised samples extracted from a main process stream with corrections applied for any temporal variations in sample composition. The overall methodology is initially applied to pure fluids and then a range of water-in-oil emulsions. It is then demonstrated on an emulsification flow loop in which three commercial demulsifiers are separately applied; significant variation in their performance with respect to increasing emulsion droplet size (and thus emulsion destabilisation) is observed. Finally, a more rapid PFG method, Difftrain, is successfully demonstrated with the measured mean emulsion droplet size being used as the input into standard PID control of applied shear and hence the extent of emulsification.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 160, 16 March 2017, Pages 362-369
نویسندگان
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