高含硫天然气三甘醇脱水工艺水露点敏感参数研究

唐秋平; 姚江; 练兴元; 刘辉; 庞钰; 罗刚; 冉丽君; 薛小红

doi:10.3969/j.issn.1007-3426.2025.02.004

高含硫天然气三甘醇脱水工艺水露点敏感参数研究

Study on sensitive parameters of water dew point in triethylene glycol dehydration process of high-sulfur natural gas

摘要

摘要:
目的确定影响高含硫天然气三甘醇（TEG）脱水工艺水露点的敏感参数。
方法基于现场实际监测数据，使用关联分析的方法对原料气入塔流量、原料气入塔温度、原料气入塔压力、贫液入塔温度、重沸器温度、TEG循环量、贫液质量分数、TEG溶液pH 这8个影响因素与水露点的关联程度进行评价。
结果 TEG溶液pH、原料气入塔温度、贫液入塔温度、原料气入塔压力与水露点的关联度值均大于0.9，是影响高含硫天然气TEG脱水工艺水露点的敏感参数。
结论该研究结果可为优化高含硫天然气TEG脱水工艺运行参数、提高脱水效率及降低能耗提供依据。

Abstract:
Objective The aim is to determine the sensitive parameters affecting the water dew point of triethylene glycol (TEG) dehydration process of high-sulfur natural gas.
Method Based on the actual on-site monitoring data, the correlation analysis method was used to evaluate the correlation degree between the water dew point and eight influencing factors, including feed gas flow rate into the absorber, feed gas temperature into the absorber, feed gas pressure into the absorber, lean liquid temperature into the absorber, reboiler temperature, TEG circulation flow rate, lean liquid mass fraction, and TEG solution pH.
Result The correlation degree values of TEG solution pH, feed gas temperature into the absorber, lean liquid temperature into the absorber, feed gas pressure into the absorber and water dew point were more than 0.9, which were sensitive parameters affecting the water dew point of high-sulfur natural gas TEG dehydration process.
Conclusion The research results can provide a basis for optimizing the operating parameters of high-sulfur natural gas TEG dehydration process, improving dehydration efficiency, and reducing energy consumption.

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