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无机盐与硫化氢对天然气三甘醇脱水的影响 被引量:4

Effect of inorganic salt and hydrogen sulfide on triethylene glycol dehydration of natural gas
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摘要 目的探究无机盐与硫化氢(H_(2)S)对天然气三甘醇脱水的影响规律。方法综述了无机盐与硫化氢在三甘醇脱水性、再生性、流变性、发泡消泡性能以及腐蚀性等方面对天然气三甘醇脱水的影响。结果随着三甘醇溶液中无机盐和硫化氢的富集,三甘醇溶液流变性下降,易发泡且消泡困难,还会与三甘醇发生反应,引起三甘醇变质,脱水效果明显下降。含硫化氢的三甘醇溶液具有腐蚀性,腐蚀管道和设备后产生铁离子,进一步影响三甘醇的性能。结论由于三甘醇自身的化学结构易受破坏以及外界高温环境,使得三甘醇易发生变质。在天然气采用MDEA进行脱硫时,需要控制MDEA的添加量。建议:①深入研究三甘醇变质机理;②建立各无机盐离子与硫化氢对三甘醇溶液脱水性能影响的模型;③建立统一的三甘醇溶液废弃标准。 Objective Investigate the effect of inorganic salts and hydrogen sulfide(H_(2)S)on triethylene glycol dehydration of natural gas.Methods The effects of inorganic salts and hydrogen sulfide on triethylene glycol dehydration of natural gas in the aspects of dehydration,regeneration,rheology,foaming and defoaming properties and corrosiveness were reviewed.Results With the enrichment of inorganic salt and hydrogen sulfide in triethylene glycol solution,the rheological property of triethylene glycol solution decreased,foaming was easy and defoaming was difficult,and it would react with triethylene glycol,resulting in the deterioration of triethylene glycol,and the dehydration effect decreased obviously.The triethylene glycol solution containing hydrogen sulfide was corrosive and produced iron ions after corroding pipes and equipment,which further affected the performance of triethylene glycol.Conclusions Because the chemical structure of triethylene glycol is easy to be destroyed and the ambient temperature is high,triethylene glycol is easy to deteriorate.When MDEA is used for desulfurization of natural gas,it is necessary to control the amount of MDEA.Suggestions indlude:(1)Study the deterioration mechanism of triethylene glycol deeply;(2)Establish a model for the effect of various inorganic salt ions and hydrogen sulfide on the dehydration of triethylene glycol solution;(3)Establish a unified standard for discarding triethylene glycol solution.
作者 吕晓方 白博宇 高峰 柳扬 马千里 周诗岽 Lyu Xiaofang;Bai Boyu;Gao Feng;Liu Yang;Ma Qianli;Zhou Shiyi(Provincial Key Laboratory of Oil and Gas Storage and Transportation,Changzhou University,Changzhou,Jiangsu,China;Sinopec Northwest Oilfield Branch,Urumqi,Xinjiang,China;CNPC Economics and Technology Research Institute,Beijing,China)
出处 《石油与天然气化工》 CAS CSCD 北大核心 2022年第4期1-6,共6页 Chemical engineering of oil & gas
基金 中国博士后科学基金资助项目“高压油气混输管道天然气水合物微观生长/聚并机理及动力学模型研究”(2021M693908) 中国石油科技创新基金研究项目“海底浅层非成岩水合物固体流化管道安全输送技术研究”(2018D-5007-0602) 江苏省教育厅面上研究项目“基于热质传递机理的天然气水合物生长动力学模型研究”(18KJB440001) 江苏省高校基础科学(自然科学)研究重大项目“深水天然气水合物固态流化开采安全输送调控机制研究”(21KJA440001)。
关键词 三甘醇 脱水 无机盐 硫化氢 变质 天然气 triethylene glycol dehydration inorganic salt hydrogen sulfide deterioration natural gas
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