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首页> 外文期刊>Journal of Materials Engineering and Performance >The Examination of Afyonkarahisar's Geothermal System Corrosion
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The Examination of Afyonkarahisar's Geothermal System Corrosion

机译：Afyonkarahisar地热系统腐蚀的检查

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Corrosion and scaling of metal surfaces are the major problems caused by geothermal fluids when metallic structures are used. This article describes a study of corrosion and scaling problems in the Afyonkarahisar Geothermal Heating System (AFJET) in Afyonkarahisar, Turkey. Water analysis, XRD, SEM, EDX, IC, ICP-OES analyses, and electrochemical methods were used in this study. Pentasodium triphosphate (Na_5P_3O_(10)), maleic anhydride (C_4H_2O_3), and 1,3-benzendisulfonic acid disodium salt (C_6H_4Na_2O_6S_2) were used as corrosion inhibitors. Tests were carried out using geothermal water from AF11 well. The experimental temperatures were chosen as 298, 333, and 358 K. Inhibitor concentrations were chosen as 1 × 10~(-1), 1 × 10~(-2), 1 × 10~(-3), and 1 × 10~(-4) mol/dm~3. Moreover, mixed inhibitor solutions were prepared using the inhibitor concentrations that showed the best inhibition. The first mixed inhibitor solution showed 96% inhibition. The second mixed inhibitor solution showed 90% inhibition. The tested inhibitors act as anodic inhibitors. XRD analysis shows that there is CaCO_3 aragonite scaling in the system. Increasing TDS, alkalinity, and hardness all promote scale formation. The photomicrographs from SEM-EDX and the metallographic microscope show that the tested inhibitors form a protective film on the surface. IC and ICP-OES analyses show that the concentration of Ca~(2+) is very high, which supports scale formation.
机译：当使用金属结构时，金属表面的腐蚀和结垢是由地热流体引起的主要问题。本文介绍了土耳其阿菲永卡拉希萨尔（Afyonkarahisar）的阿菲永卡拉希萨尔地热加热系统（AFJET）中腐蚀和结垢问题的研究。在这项研究中使用了水分析，XRD，SEM，EDX，IC，ICP-OES分析和电化学方法。三磷酸五钠（Na_5P_3O_（10）），马来酸酐（C_4H_2O_3）和1,3-苯二磺酸二钠盐（C_6H_4Na_2O_6S_2）被用作缓蚀剂。测试使用AF11井的地热水进行。实验温度选择为298、333和358K。抑制剂浓度选择为1×10〜（-1），1×10〜（-2），1×10〜（-3）和1×10 〜（-4）mol / dm〜3。此外，使用显示出最佳抑制作用的抑制剂浓度来制备混合抑制剂溶液。第一种混合抑制剂溶液显示出96％的抑制率。第二种混合抑制剂溶液显示出90％的抑制率。经测试的抑制剂可作为阳极抑制剂。 XRD分析表明系统中存在CaCO_3文石水垢。 TDS，碱度和硬度的增加均会促进水垢的形成。 SEM-EDX和金相显微镜的显微照片显示，经过测试的抑制剂在表面形成了保护膜。 IC和ICP-OES分析表明，Ca〜（2+）的浓度很高，这有助于形成水垢。

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