Abstract: The corrosion and its mechanism in Daqing natural gas processing units were fully investigated.According to the analysis of corrosion mechanism and test data,optimum preventionmeasures was put forward.The combined methods of magnesium sacrifical anode and zinc-rich paint was used to protect the corrosion by water and inhibitor was used to protect thegaseous corrosion respectively. Research results showed that the corrosion prevention behavior of the method was quite obvious for natural gas coolers of the unit.

Key words: natural gas engineering, corrosion, protection

摘要： 对大庆天然气加工装置的腐蚀成因进行了现场调研与理论分析。依据大量的实验及现场测试数据,提出对装置中水、气两相,分别进行镁牺牲阳极-富锌涂料及投加高效缓蚀剂的最佳联合防护措施。研究结果表明,采用联合防护方法对防止装置的天然气增压浅冷用冷却器等设备的腐蚀,效果显着。

关键词: 天然气工程, 腐蚀, 保护