Minimization of CaSO_4 Deposition Through Surface Modification

A. AL-JANABI; M. R. MALAYERI; H. MULLER-STEINHAGEN

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Minimization of CaSO_4 Deposition Through Surface Modification

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Among the various fouling mitigation strategies, surface modification is gaining increased attention due to its environmental compatibility, i.e., reduced consumption of potentially harmful fouling inhibitors. One approach is to decrease the surface energy, which could give rise to lower adhesive strength of deposited crystals on surfaces. The present work aims at investigating the influence of various novel coatings on the interaction energies between CaSO_4 deposits and modified surfaces. Investigated coatings are (i) solvent based, (ii) water based, and (iii) electroless Ni-P-BN. A systematic set of fouling runs has been conducted under similar operating conditions for all coatings. The experimental results show that the deposition process is strongly affected by altering the surface properties, particularly the electron donor component. Furthermore, the contribution of the Lifshitz-van der Waals energy to the total interaction energy is marginal in comparison to that of the Lewis acid-base energy under the range of operating conditions in this study. Overall, in terms of reduced stickiness of deposits onto the surface, the solvent-based coatings performed best.

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《Heat Transfer Engineering》 |2011年第4期|291-299|共9页
作者
A. AL-JANABI; M. R. MALAYERI; H. MULLER-STEINHAGEN;
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作者单位

Institute for Thermodynamics and Thermal Engineering, University of Stuttgart;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工业用热工设备;
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Minimization of CaSO_4 Deposition Through Surface Modification

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