石油与天然气化工2025，Vol.54Issue(4)：12-20,9.DOI:10.3969/j.issn.1007-3426.2025.04.002
天然气脱水装置三甘醇携带损失影响因素及控制措施
Influencing factors and control measures of triethylene glycol carrying loss of natural gas dehydration unit
摘要
Abstract
Objective The aim is to put forward measures to reduce the carrying loss of triethylene glycol(TEG)by analyzing the main factors affecting the carrying loss of triethylene glycol.Method Taking the TEG solution in the operation of a natural gas dehydration station as the research object,the influences of various factors on TEG carrying loss were analyzed.These factors included iron-containing compounds mass concentration in TEG,corrosion inhibitors and defoamers mass concentration in TEG,methyldiethanolamine(MDEA)and hydrogen sulfide(H2S)mass concentration in TEG,hydrocarbons mass concentration in TEG,the temperature of natural gas into the absorber,the pressure of natural gas into absorber,the natural gas processing capacity and the reboiler temperature.The grey correlation method was used to identify the main controlling factors.Result The factors such as mass concentration of iron-containing compounds,corrosion inhibitors and hydrocarbons in TEG were the main controlling factors affecting the triethylene glycol carrying loss.The primary cause of the carrying loss of triethylene glycol was identified as the triethylene glycol foaming,which increased the triethylene glycol droplets carried by the gas.Conclusion The impurities brought from the natural gas into the triethylene glycol are the main reason for the increase in carrying loss of triethylene glycol,and the change of process parameters has little effect.The carrying loss of triethylene glycol can be reduced by controlling the impurity content in the natural gas entering the absorber,operating at high pressure and low temperature,and installing a separator on the natural gas pipeline at the outlet of the absorber.关键词
天然气/脱水/三甘醇/携带损失Key words
natural gas/dehydration/triethylene glycol/carrying loss引用本文复制引用
宋雷,戴志向,赵明,蒋伟,罗潇寒,孟江..天然气脱水装置三甘醇携带损失影响因素及控制措施[J].石油与天然气化工,2025,54(4):12-20,9.基金项目
中国石油西南油气田公司科技计划项目"三甘醇脱水装置甘醇夹带与运移特性评价研究"(20220305-02) （20220305-02）
