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对芳烃抽提装置腐蚀原因进行了分析，经过试验，找到装置中环丁砜ｐＨ值的最佳控制范围，可使装置中腐蚀较严重的设备腐蚀速率降低７０％以上。
The corrosion of aromatics extraction unit was analyzed. After testing, the best control range of sulfolane pH was found, which could reduce the corrosion rate of equipment with more serious corrosion by more than 70%.