含COH2S酸性气田冲刷腐蚀概述-CNKI.PDFVIP

科技视点 第 32 卷 第 8 期 含 CO -H S 酸性气田冲刷腐蚀概述 2 2 周霄骋 刘智勇 邢云颖 （北京科技大学 新材料研究院 北京 100083） 摘 要：天然气管线的安全服役对国民生产和生活意义重大。近年来，随着对含高浓度 CO 、H S 等强腐 2 2 蚀性介质酸性气田的大量开发，输送压力和流速不断提高，通过采用传统脱硫、脱 CO2、缓蚀剂等技术在实际 应用中效果有限，导致天然气管线的腐蚀失效情况仍比较严重，尤其是三通、法兰、焊缝等特殊位置。本文 通过阐述 CO -H S 酸性气田冲刷腐蚀的特征和影响因素，总结了含 CO -H S 酸性气田中冲刷腐蚀的研究进展， 2 2 2 2 指出研究天然气高速冲刷与薄液电化学相互作用和腐蚀发生机理对预防天然气管线钢的冲刷腐蚀有较重要的 意义。 关键词：CO H S 冲刷 薄液膜 酸性气田 2 2 Overview of Erosion-corrosion in CO -H S Sour Gas Field 2 2 Zhou Xiaocheng Liu Zhiyong XingYunying (Institute for Advanced Materials and Technology, University of Science Technology Beijing Beijing 100083) Abstract The security of the gas pipeline in service is of great significance to the national production and life. With the development of the sour gas field, containing high concentration of CO , H S and other strong corrosive 2 2 medium, the gas pipeline, especially the tees, elbows, weld joints and other special parts, has occurred serious corrosion and failure due to the continuous improvement of the transport pressure and flow rate, and the limited effects by adopting the traditional desulfurization, decarbonization, inhibitor and other technicals. This paper describes the erosion-corrosion characteristics and the influencing factors in CO -H S sour gas field; meanwhile, summarizes the