Evolution of soluble impurities concentrations in industrial phosphoric acid during the operations of desupersaturation

被引：21

作者：

Khamar, L. ^{[1
,2
]}

Guendouzi, M. El ^{[1
]}

Amalhay, M. ^{[2
]}

El Alaouia, M. Aboufaris ^{[1
]}

Rifai, A. ^{[1
]}

Faridi, J. ^{[1
]}

Azaroual, M. ^{[3
]}

机构：

[1] Univ Hassan II Mohammedia Casablanca, Fac Sci Ben Msik, Lab Phys Chem, URAC17, Casablanca BP 7955, Morocco

[2] R&D OCP Grp, Casablanca, Morocco

[3] BRGM Water, Environm & Ecotechnol Direct, F-45060 Orleans, France

来源：

SYMPHOS 2013 - 2ND INTERNATIONAL SYMPOSIUM ON INNOVATION AND TECHNOLOGY IN THE PHOSPHATE INDUSTRY | 2014年 / 83卷

关键词：

phosphic acid; phosphate; process; impurities; fouling; desupersaturation;

D O I：

10.1016/j.proeng.2014.09.045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The desupersaturation of industrial phosphoric acid is a unit operation integrated either explicitly or implicitly in the Wet Process for Phosphoric Acid production (WPPA). This operation aims to improve the acid quality by elimination or reduction of impurities, which impair the acid quality and affect the process downstream performance. Given the importance and impact of the phosphoric acid quality and its treatment on the performance of the whole production chain, we studied the operation of desupersaturation of this acid under various conditions of temperature and residence time. This allows determination, on one hand of the concentration evolution and the nature of various mineral phases of impurities present in the solution acid, and on the other hand the determination of the optimum treatment conditions of the acid to be adopted for improving production units performances. These measures can reduce the negative impacts of impurities in terms of fouling, corrosion, abrasion and produced acid quality. (C) 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).

引用

页码：243 / 249

页数：7

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