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磷酸蒸发浓缩助剂的实验研究
Experimental study on the additives in phosphoric acid evaporation process
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| Site：http://www.lfyff.com Time：2010-3-9 16:16:48 By：全国磷复肥信息网 |
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关键词
磷酸浓缩,表面活性剂,阻垢剂,蒸发强度,阻垢率
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摘 要
实验研究各种表面活性剂作为磷酸浓缩蒸发的助剂,用以提高水的蒸发强度,加入量只需磷酸质量的200 × 10-6,以TWEEN+NNO和TWEEN+GC效果较好｡同时实验研究了各种阻垢剂,其中以SO-3和十二烷基苯磺酸钠最佳,对氟硅酸钾(钠)的阻垢率可达60%以上｡湿法磷酸浓缩过程中同时加入上述表面活性剂,可提高蒸发强度,减少蒸汽用量,提高浓缩酸浓度,并有一定的阻垢作用｡
[中图分类号]TQ126.3+5 [文献标识码]A [文章编号] 1007–6220(2010)01–0020–03
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| 熊伟,刘裕 |
| (湖北富邦化工科技有限公司,湖北 应城 432400) |
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Keywords
phosphoric acid concentration, surfactant, scaling inhibitor, evaporation intensity, scaling inhibition rate
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Abstract
The varied surfactants are studied as the additives for the evaporation concentration of phosphoric acid to improve the water evaporation intensity, with the adding amount 200 × 10-6 of phosphoric acid, the effects of TWEEN + NNO and TWEEN + GC are good. Meanwhile the varied scaling inhibitors are studied, the effects of SO-3 and sodium dodecyl benzene sulfonate (SDBS) are the best, the scaling inhibition rate on potassium (sodium) fluosilicate is more than 60%. In wet-process phosphoric acid concentration process, adding the above-mentioned surfactants can increase evaporation intensity, reducing the amount of steam, increasing acid concentration and having a certain scaling effect.
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| XIONG Wei, LIU Yu |
| (Hubei Forbon Chemicals & Technology Co., Ltd, Yingcheng, Hubei 432400, China) |
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