铜氨络合物对二乙基羟胺除氧缓蚀性能的影响

doi:10.16183/j.cnki.jsjtu.2021.171

上海交通大学学报 ›› 2022, Vol. 56 ›› Issue (6): 818-826.doi: 10.16183/j.cnki.jsjtu.2021.171

• 化学化工 • 上一篇

铜氨络合物对二乙基羟胺除氧缓蚀性能的影响

魏晓静¹, 翟双岭¹, 石鑫¹^,², 高多龙¹^,², 闻小虎¹, 刘冬梅², 任天辉³()

1.中国石油化工股份有限公司西北油田分公司,乌鲁木齐 830011
2.中国石化缝洞型油藏提高采收率重点试验室, 乌鲁木齐 830011
3.上海交通大学化学化工学院,上海 200240

收稿日期:2021-05-21 出版日期:2022-06-28 发布日期:2022-07-04
通讯作者: 任天辉 E-mail:thren@sjtu.edu.cn
作者简介:魏晓静(1986-),女,甘肃省庆阳市人,工程师,从事腐蚀防护研究.

Effect of Copper-Ammonia Complex on the Oxygen Removal and Corrosion Inhibition Performance of Diethylhydroxylamine

WEI Xiaojing¹, ZHAI Shuangling¹, SHI Xin¹^,², GAO Duolong¹^,², WEN Xiaohu¹, LIU Dongmei², REN Tianhui³()

1. Northwest Oilfield Company of China Petroleum and Chemical Corporation, Urumqi 830011, China
2. Key Laboratory for Improving Oil Recovery in Fractured and Cave Reservoir of China Petroleum and Chemical Corporation, Urumqi 830011, China
3. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2021-05-21 Online:2022-06-28 Published:2022-07-04
Contact: REN Tianhui E-mail:thren@sjtu.edu.cn

摘要/Abstract

摘要：

研究铜氨络合物对二乙基羟胺除氧效率的催化作用,及其复配物对碳钢的缓蚀保护能力.考察铜氨络合物添加量、水的pH值和温度对二乙基羟胺除氧性能的影响.除氧测试结果表明,二乙基羟胺的除氧率随着水的pH值和温度的增加而增加.添加铜氨络合物后,二乙基羟胺的除氧效果得到很大提升.铜氨络合物最佳添加质量浓度为8 mg/L.在此条件下,当水的pH≥7或水温为30~70 ℃时,二乙基羟胺的除氧率均能达到95%以上.缓蚀测试结果表明,铜氨络合物可显著提高二乙基羟胺对碳钢的防腐蚀保护能力,缓蚀率能达到96.2%,且缓蚀能力具有长效性.因此,铜氨络合物和二乙基羟胺的复配物具有很好的除氧缓蚀性能,在工业用水的除氧和工业碳钢设备的防腐蚀保护领域具有广阔的应用前景.

关键词: 铜氨络合物, 二乙基羟胺, 除氧, 缓蚀

Abstract:

The catalytic effect of copper-ammonia complex on the deoxygenation efficiency of diethylhydroxylamine (DEHA) and the corrosion protection ability of the compound on carbon steel are studied. The effects of the addition of catalyst, and the pH and temperature of water on the deoxygenation performance of DEHA are investigated. The results of the deoxygenation test show that the deoxygenation rate of DEHA increases with the increase of the pH and temperature of water. The deoxygenation effect is greatly improved after the addition of catalyst. The optimal concentration of copper ammonia complex is 8 mg/L. Under these conditions, when the water pH≥7 or the water temperature is in the range of 30 ℃ and 70 ℃, the oxygen removal rate can reach more than 95%. The corrosion inhibition test results show that the copper-ammonia complex can significantly improve the corrosion protection ability of DEHA to carbon steel, and the corrosion inhibition rate can reach 96.2% with a long-term effect. Therefore, the compound has a good deoxygenation and corrosion inhibition performance, which has broad application prospects in the field of deoxygenation of industrial water and corrosion protection of industrial carbon steel equipment.

Key words: copper-ammonia complex, diethylhydroxylamine (DEHA), deoxygenation, corrosion inhibition

中图分类号:

TG172.5

魏晓静, 翟双岭, 石鑫, 高多龙, 闻小虎, 刘冬梅, 任天辉. 铜氨络合物对二乙基羟胺除氧缓蚀性能的影响[J]. 上海交通大学学报, 2022, 56(6): 818-826.

WEI Xiaojing, ZHAI Shuangling, SHI Xin, GAO Duolong, WEN Xiaohu, LIU Dongmei, REN Tianhui. Effect of Copper-Ammonia Complex on the Oxygen Removal and Corrosion Inhibition Performance of Diethylhydroxylamine[J]. Journal of Shanghai Jiao Tong University, 2022, 56(6): 818-826.

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缓蚀剂	m₀/g	m/g	腐蚀速率/ (mm·a^-1)	缓蚀率/ %
空白组	19.8036	19.0346	0.1275
70 mg/L DEHA	20.2326	19.8336	0.0662	48.1
70 mg/L DEHA+ 8 mg/L 铜氨络合物	20.1442	20.1152	0.0048	96.2

缓蚀剂	腐蚀电压/V	腐蚀电流密度/ ( A∙cm^-2)
空白组	-0.5431	7.725×10^-7
70 mg/L DEHA	-0.3342	5.021×10^-7
70 mg/LDEHA+ 8 mg/L 铜氨络合物	-0.2703	8.890×10^-8

铜氨络合物对二乙基羟胺除氧缓蚀性能的影响

Effect of Copper-Ammonia Complex on the Oxygen Removal and Corrosion Inhibition Performance of Diethylhydroxylamine

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