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首页> 外文会议>Corrosion conference and expo >A NOVEL METHOD TO MITIGATE TOP OF THE LINE CORROSION IN WET GAS PIPELINES: PART I - PROOF OF CONCEPT
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A NOVEL METHOD TO MITIGATE TOP OF THE LINE CORROSION IN WET GAS PIPELINES: PART I - PROOF OF CONCEPT

机译：一种缓解湿气管道线腐蚀顶部的一种新方法：第一部分 - 概念证明

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Conventional injection methods for delivery of corrosion inhibitors in wet gas pipelines are incapable of providing consistent inhibitor coverage for the entire inside pipe wall, if the flow dynamics are not favorable. Such limitation becomes particularly crucial where Top of the Line Corrosion (TLC) is an issue due to water condensation at the 12 o'clock position, in particular in the presence of volatile organic acids. Currently the most common inhibitor delivery methods rely on periodic pigging or batch treatment to control TLC. Such methods can be expensive and at times unavailable. A novel idea is to inject the corrosion inhibitor within a foam matrix. The foam slug is formed and carried along the pipeline by the produced gas, therefore contacting the whole circumference of the pipe along a given distance. The foam can be broken before separation using a de-foamer, if it does not naturally break. This process ensures homogeneous delivery of the inhibitor to the pipe wall along pipe sections suffering from TLC. This technique does not interrupt or slow down the production and is more cost effective than the classical methods of treating TLC using pigging or batch inhibition. This paper addresses the chemistry work relating to screening various foaming agents and corrosion inhibitors for compatibility issues and foam stability criteria. A laboratory prototype apparatus of the foam application is described and corrosion data is presented as a proof of concept of the new method.
机译：如果流动动力学不利，则不能为整个内部管壁提供一致的抑制剂覆盖，以便在湿气管道中输送腐蚀抑制剂的常规注射方法。这种限制变得特别关键，其中线腐蚀（TLC）顶部是由于12点钟位置的水凝结，特别是在挥发性有机酸存在下的问题。目前最常见的抑制剂递送方法依赖于定期排出或分批治疗来控制TLC。此类方法可能是昂贵的并且有时不可用。一种新颖的想法是在泡沫基质内注射腐蚀抑制剂。通过产生的气体沿管道形成并携带泡沫块，因此沿着给定距离接触管的整个圆周。如果它不自然破裂，则可以在分离之前破裂泡沫。该方法确保沿患有TLC的管道部分均匀地将抑制剂输送到管壁。这种技术不会中断或减慢生产，并且比使用流量抑制治疗TLC的经典方法更具成本效益。本文解决了与筛选各种发泡剂和腐蚀抑制剂的化学作品，以进行兼容性问题和泡沫稳定标准。描述了泡沫应用的实验室原型装置，并呈现腐蚀数据作为新方法的概念证明。

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