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利用腐蚀实验和失重测试方法研究了BIB天然气减阻剂对天然气管道内壁的影响,同时考察了天然气减阻剂原料、中间体和溶剂对管道内壁的影响。通过电化学实验,得到了管壁样品在含有不同比例的天然气减阻剂介质中的动电位极化曲线,通过计算机拟合极化曲线,得到了含有不同比例的天然气减阻剂介质的自腐蚀电位、自腐蚀电流密度和极化阻力,总结了天然气减阻剂对管道内壁的电化学影响。通过燃烧测试实验,研究了天然气减阻剂对天然气气质的影响;通过搅拌实验,初步研究了天然气减阻剂对下游处理工艺中的脱硫脱碳溶液系统和脱水系统的影响。研究表明:BIB天然气减阻剂对天然气管道的运行安全基本没有不良影响。
The effect of BIB natural gas drag reducing agent on the inner wall of natural gas pipeline was studied by corrosion test and weight loss test. At the same time, the effects of natural gas drag reducing agent, intermediate and solvent on the inner wall of pipeline were investigated. Electrochemical experiments were carried out to obtain the potentiodynamic polarization curves of pipe wall samples in natural gas DRA media with different proportions. The polarization curves were fitted by computer to obtain self-corrosion of natural gas DRA media with different proportions Potential, self-corrosion current density and polarization resistance, summed up the natural gas drag reducing agent on the pipeline wall electrochemical effects. Through the combustion test, the effect of natural gas DRA on natural gas quality was studied. The effect of natural gas DRA on the desulfurization and decarbonization solution system and dehydration system in the downstream treatment process was studied by mixing experiment. Research shows that: BIB natural gas drag reducing agent has no adverse effect on the operation safety of natural gas pipeline.