| EDTA在尿素换热设备清洗中的应用 |
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| 引用本文： | 赵珍芳 曾宪琴. EDTA在尿素换热设备清洗中的应用[J]. 河北化工, 1993, 0(1): 23-24 |
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| 作者姓名： | 赵珍芳 曾宪琴 |
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| 作者单位： | 沧州化肥厂，沧州化肥厂 沧州市 061000，沧州市 061000 |
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| 摘 要： | 草酸法清洗换热设备垢层时对设备腐蚀严重。EDTA能与积垢中的铁离子反应生成溶于水的络合离子,达到清洗积垢的目的,对设备腐蚀程度也小,通过EDTA、Fe含量的变化可判断清洗程度。
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| 关 键 词： | EDTA法 清洗 积垢 尿素 乙二酸 |
EDTA Applied to Clean Heat Exchanger in the Production of Urea |
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| Zhao Zhenfang,Zeng Xianqin. EDTA Applied to Clean Heat Exchanger in the Production of Urea[J]. Hebei Chemical Engineering and Industry, 1993, 0(1): 23-24 |
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| Authors: | Zhao Zhenfang Zeng Xianqin |
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| Abstract: | When heat exchanger is cleaned using oxalic acid, it is corroded severely. EDTA can react with iron ion in scale to formate complex ion which is soluble in water. Thus scale is cleaned out and the equipment is corroded a little. Cleaning effect can be determined by the content of EDTA and Fe. |
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| Keywords: | EDTA oxalic acid hexamethylenamine iron clean scale |
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