不锈钢基高通量换热管多孔层的耐乙酸腐蚀特性

doi:10.16085/j.issn.1000-6613.2017.06.041

化工进展 ›› 2017, Vol. 36 ›› Issue (06): 2255-2261.DOI: 10.16085/j.issn.1000-6613.2017.06.041

不锈钢基高通量换热管多孔层的耐乙酸腐蚀特性

陶良权¹, 刘京雷¹, 夏翔鸣², 范根芳², 曹洪海³, 徐宏¹

1 华东理工大学化学工程联合国家重点实验室, 上海 200237;
2 中国石化扬子石油化工有限公司, 江苏南京 210048;
3 无锡化工装备股份有限公司, 江苏无锡 214131

收稿日期:2016-11-15 修回日期:2017-02-10 出版日期:2017-06-05 发布日期:2017-06-05
通讯作者: 刘京雷
作者简介:陶良权(1991—),男,硕士研究生。E-mail:taoliangquan@126.com。
基金资助:
中石化科技开发项目（316092）。

Corrosion resistance properties of stainless steel-based porous layer of high flux exchanging tube in acetic acid solution

TAO Liangquan¹, LIU Jinglei¹, XIA Xiangming², FAN Genfang², CAO Honghai³, XU Hong¹

1 State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
2 Sinopec Yangzi Petrochemical Company Ltd., Nanjing 210048, Jiangsu, China;
3 Wuxi Chemical Equipment Co., Ltd., Wuixi 214131, Jiangsu, China

Received:2016-11-15 Revised:2017-02-10 Online:2017-06-05 Published:2017-06-05

摘要/Abstract

摘要： 表面多孔高通量换热管是一种高效的强化沸腾传热元件。为了提高表面多孔高通量换热管的耐腐蚀性能，本文采用粉末烧结工艺在不锈钢换热管表面烧结了一层不锈钢基多孔层，模拟含乙酸的乙二醇溶液蒸发沸腾工况，并借助扫描电子显微镜（SEM）、腐蚀失重法和电化学方法对比研究了不锈钢基、铁基、铜基3种高通量换热管表面多孔层的耐腐蚀性能。结果表明，所开发的不锈钢基表面多孔层相比铁基和铜基表面多孔层具有更加优良的耐腐蚀性能。在沸腾浸泡实验条件下，不锈钢基多孔层的腐蚀速率约为铁基多孔层腐蚀速率的1/5～1/3，为铜基多孔层的3/10～4/7。在0.1～10mol/L的实验浓度范围内，常温下不锈钢基多孔层耐蚀性随着乙酸浓度的增加而降低，但仍明显优于铁基、铜基多孔层。

关键词: 不锈钢, 多孔高通量换热管, 乙酸, 腐蚀, 烧结

Abstract: Porous surface high flux exchanging tube is a high efficiency heat transfer component. In order to improve the corrosion resistance of porous surface high flux exchanging tube,power sintering was adopted to develop a stainless steel-based micro-porous layer on the surface of stainless stain tube. All the experiments were conducted in the boiling ethylene glycol solution with acetic acid. With the aids of electric scanning microscope method(SEM),corrosion weight loss method and electrochemical comparison measurement,the corrosion resistance of stainless steel-based porous layer on high flux heat exchanger tube was studied compared with copper-based and iron-based porous layer. The results show that corrosion resistance of stainless steel-based porous layer is superior to copper-based and iron-based materials. In the boiling immersion test,the mass loss rate of stainless steel-based porous layer is about 1/5—1/3 of iron-based porous layer,and 3/10—4/7 of copper-based porous layer. The corrosion resistance of stainless steel-based porous layer decreases with acetic acid concentration at the range of 0.1—10mol/L and at room temperature. Additionally,the corrosion resistance of stainless steel-based porous layer is higher than copper-based and iron-based porous layers throughout the experiment.

Key words: stainless steel, porous high flux heat exchanger tube, acetic acid, corrosion, sintering

中图分类号:

TQ050.9

陶良权, 刘京雷, 夏翔鸣, 范根芳, 曹洪海, 徐宏. 不锈钢基高通量换热管多孔层的耐乙酸腐蚀特性[J]. 化工进展, 2017, 36(06): 2255-2261.

TAO Liangquan, LIU Jinglei, XIA Xiangming, FAN Genfang, CAO Honghai, XU Hong. Corrosion resistance properties of stainless steel-based porous layer of high flux exchanging tube in acetic acid solution[J]. Chemical Industry and Engineering Progress, 2017, 36(06): 2255-2261.

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不锈钢基高通量换热管多孔层的耐乙酸腐蚀特性

Corrosion resistance properties of stainless steel-based porous layer of high flux exchanging tube in acetic acid solution

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