Deposition Model of Sodium (Potassium) Fluorosilicate Fouling in Wet - Process Phosphoric Acid Production

Abstract:

It is easy to form the crystallization fouling of sodium (potassium) fluorosilicate during the wet-process phosphoric acid (WPA) production, which seriously affects the continuity of production. The crystallization fouling deposition model is selected to establish a model to simulate sodium (potassium) fluorosilicate fouling deposition process and to predict the deposition rate of fouling in the pipe in this paper. The predicted results by the model are on the whole consistent with the existed experimental data. The factors, such as fluid velocity, temperature and ion concentration that affect fouling deposition rate were discussed, it was found that the fouling deposition rate increases with the increasing of fluid velocity, decreases with the increasing of temperature, and the greater the ion concentration, the greater the deposition rate.

• Periodical: Advanced Materials Research (Volume 1094)
• Pages: 194-198
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1094.194
• Online since: March 2015
• Authors: Peng Yun Song*, Rong Qun Deng, Dan Zhu
• Keywords: Crystallization Fouling, Deposition Model, Sodium （Potassium） Fluorosilicate, Wet-Process Phosphoric Acid

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