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首页> 外文会议>NACE International corrosion conference expo >DEVELOPMENT OF NON-INTERFERING CORROSION INHIBITORS FOR SOUR GAS PIPELINES WITH CO-INJECTION OF KINETIC HYDRATE INHIBITORS
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DEVELOPMENT OF NON-INTERFERING CORROSION INHIBITORS FOR SOUR GAS PIPELINES WITH CO-INJECTION OF KINETIC HYDRATE INHIBITORS

机译：共同注入动力学水合物抑制剂开发含气管道无干扰缓蚀剂

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Sour gas pipelines are often operated under the conditions that are conducive to corrosion and gas hydrate formation. In order to protect the integrity of the pipelines and to prevent potential solid hydrate blockages, the continuous application of corrosion inhibitors (CI) and kinetic hydrate inhibitors (KHI) is an attractive chemical solution to minimize the risk. However, CI and KHI are not always compatible with each other when co-injected. This study confirms that the presence of CI can significantly decrease the performance of KHI. The adverse effect is attributed to the interference between these two types of molecules. The attempt to overcome the negative effect of CI by increasing the KHI dosages worked only for a very limited number of CI molecules. It is also not an economical approach as KHI is usually more costly and its effective dosage is usually higher than CI. The need to have a fully compatible CI/KHI package has prompted an extensive research program that resulted in the successful development of a number of new CI formulations. These new formulations not only achieved outstanding performance in the laboratory tests under sour conditions but also did not interfere with KHI to adversely lower its performance when present together. Some of these new CI formulations demonstrated exceptional film persistency with their performance rivaling the benchmarks and thus can be considered for batch applications. The continuous injection of compatible CI/KHI packages along with periodic batch treatments using KHI-compatible CI is an effective solution to minimize the risk of corrosion and hydrate problems in sour gas pipelines.
机译：酸性气体管道通常在有利于腐蚀和天然气水合物形成的条件下运行。为了保护管道的完整性并防止潜在的固体水合物堵塞，连续使用腐蚀抑制剂（CI）和动力水合物抑制剂（KHI）是一种有吸引力的化学解决方案，可最大程度地降低风险。但是，CI和KHI在共注入时并不总是彼此兼容的。这项研究证实了CI的存在会大大降低KHI的表现。不利影响归因于这两种类型的分子之间的干扰。通过增加KHI剂量克服CI的负面影响的尝试仅适用于非常有限数量的CI分子。这也不是一种经济的方法，因为KHI通常更昂贵，并且其有效剂量通常高于CI。对完全兼容的CI / KHI软件包的需求促使进行了广泛的研究计划，从而成功开发了许多新的CI配方。这些新配方不仅在酸性条件下的实验室测试中获得了出色的性能，而且当与KHI一起使用时，也不会干扰KHI从而降低其性能。这些新的CI配方中的一些具有优异的薄膜持久性，其性能可与基准媲美，因此可考虑用于批量应用。连续注入兼容的CI / KHI封装以及使用兼容KHI的CI进行定期分批处理是一种有效的解决方案，可将酸性气体管道中的腐蚀和水合物问题的风险降至最低。

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