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首页> 外文会议>ASME international pipeline conference 2008 >PERFORMANCE OF CORROSION INHIBITORS AT HIGH CO_2 PRESSURES
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PERFORMANCE OF CORROSION INHIBITORS AT HIGH CO_2 PRESSURES

机译：高CO_2压力下的缓蚀剂性能

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摘要

The objective of this study was to evaluate the performance of two corrosion inhibitors (CI-A and CI-B) under conditions similar to the second PTT's offshore pipeline. The experiments were carried out in flow-loop system, 36 m long, 10.16 cm diameter at 10.5 and 14 bar of carbon dioxide pressure, a temperature at 50 C. The performances of corrosion inhibitors were examined under conditions of superficial liquid velocity of 0.03 m/s and gas velocities of 6, 8 and 10 m/s in 0 and 3 degree inclinations using the ER probe and X65 weight-loss coupons for corrosion rate measurement at the top and bottom of pipe.rnAccording to flow characteristics, it was found that the smooth and wavy stratified flow occurred in 0 degree. For 3 degree inclination, wavy stratified flow with big waves was dominantly presented for all conditions.rnCorrosion inhibitor B showed a better performance than inhibitor A in all cases. For inhibitor B, the target corrosion rates of less than 0.1 mm/yr were achieved in all conditions with 50 ppm of inhibitor concentration whereas the amount of 75 ppm inhibitor concentration was required for CI-A.rnThe color, turbidity, and emulsion tendency with corrosion inhibitors will be also discussed in this paper.
机译：这项研究的目的是评估两种腐蚀抑制剂（CI-A和CI-B）在类似于第二个PTT海上管道的条件下的性能。实验在流循环系统中进行，该系统长36 m，直径为10.6 cm，压力为10.5，二氧化碳压力为14 bar，温度为50℃。在表面液体流速为0.03 m的条件下检查了缓蚀剂的性能。使用ER探针和X65减重试样在管道顶部和底部进行腐蚀速率测量，在0和3度倾角下的气体流速为/ s和6、8和10 m / s的气体速度.rn根据流动特性发现光滑波状分层流发生在0度。对于3度倾斜，在所有情况下都呈现出波浪状分层流和大波浪。缓蚀剂B在所有情况下均表现出比缓蚀剂A更好的性能。对于缓蚀剂B，在50ppm缓蚀剂浓度下，所有条件下的目标腐蚀速率均小于0.1 mm / yr，而CI-A要求达到75 ppm缓蚀剂浓度。腐蚀抑制剂也将在本文中进行讨论。

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