| 硝酸装置低压反应水冷器的优化改造 |
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| 引用本文： | 黎志敏.硝酸装置低压反应水冷器的优化改造[J].化肥工业,2014(4):39-41. |
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| 作者姓名： | 黎志敏 |
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| 作者单位： | 杭州龙山化工有限公司,浙江杭州310053 |
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| 摘 要： | 介绍了双加压法硝酸装置低压反应水冷器的运行工况及特性,分析了水冷器腐蚀的原因主要为温差应力腐蚀、高温冷凝稀硝酸冲刷和Cl-聚集的应力腐蚀。针对腐蚀原因,提出了采用内孔焊先进制造工艺、改变设备布置形式等优化改造措施,能够有效解决目前存在易腐蚀的问题。
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| 关 键 词： | 双加压法 硝酸 水冷器 优化改造 |
Optimization and Renovation of Low-Pressure Reactor Water Cooler for Nitric Acid Unit |
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| Li Zhimin.Optimization and Renovation of Low-Pressure Reactor Water Cooler for Nitric Acid Unit[J].Journal of the Chemical Fertilizer Industry,2014(4):39-41. |
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| Authors: | Li Zhimin |
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| Affiliation: | Li Zhimin (Hangzhou Longshan Chemical Industry Co., Ltd. Zhejiang Hangzhou 310053) |
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| Abstract: | The operation conditions and characteristics of low-pressure reactor water cooler for nitric acid unit is introduced , and the causes for corrosion of the water cooler is analyzed , they are differential temperature stress corrosion , high temperature condense dilute nitric acid erosion and stress corrosion of Cl - gathering .Based on corrosion causes , optimization and renovation measures are proposed , including using advanced inner hole welding technology , changing layout of equipment and so on, these can solved corrosion problems effectively . |
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| Keywords: | dual-pressure process nitric acid water cooler optimization and renovation |
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