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The behavior of mercury in water, alcohols, monoethylene glycol and triethylene glycol

机译：汞在水，醇，单乙二醇和三乙二醇中的行为

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摘要

The oil and gas industry is becoming aware of the effects of produced mercury on hydrocarbon processing systems, and that produced mercury contaminates processing equipment. The use of technical information is critical to planning for decommissioning, decontamination and waste minimization. To this end, the solubility of mercury in the polar solvents - water, alcohols, monoethylene glycol (MEG) and triethylene glycol (TEG) have been determined from approximately 243 to 373 K. Elemental mercury solubility in MEG and TEG is somewhat higher than that reported previously in the literature when a mass of mercury was agitated for several days in the respective solvent. Elemental mercury was nearly quantitatively stripped from water by natural gas in a small laboratory stripping column, and in a distillation experiment, about 75% of Hg-0 in 40 vol% MEG partitioned to the distillate phase. Elemental mercury is present in process inlet flow lines and can drop out. This is expected if the reservoir is both hot and saturated with elemental mercury (common), and the pipeline is colder (common). However, in the inlet separator, any dissolved mercury is removed by the drop in pressure and the flashing of C1-C4 hydrocarbons. These light hydrocarbons are very effective in stripping Hg-0 from the crude and condensate. What remains in the crude and condensate is particulate metacinnabar, beta-HgS. In amine treaters and glycol dehydrators a portion of the Hg-0 in the gas can react with traces of oxygen to form heat-stable salts. These can further react to form Hg-rich sludges. The success of the experiments will be useful to the industry in understanding the behavior of mercury in polar solvents, gas hydrate inhibition and in glycol and amine contactors. (C) 2017 Elsevier Ltd. All rights reserved.
机译：石油和天然气工业正逐渐意识到所产生的汞对烃加工系统的影响，所产生的汞会污染加工设备。技术信息的使用对于计划退役，净化和减少废物至关重要。为此，已确定汞在极性溶剂（水，醇，一甘醇（MEG）和三甘醇（TEG））中的溶解度约为243至373K。在MEG和TEG中元素汞的溶解度略高于先前在文献中报道了当在相应的溶剂中将汞团搅拌几天时。在小型实验室汽提塔中，天然气几乎定量地从水中将元素汞汽提，并且在蒸馏实验中，40体积％MEG中约75％的Hg-0分配到了馏出相中。元素汞存在于过程入口流线中，并且会掉出。如果储层既热又充满元素汞（常见），并且管道较冷（常见），则可以预期。但是，在入口分离器中，任何溶解的汞都会通过压力下降和C1-C4碳氢化合物的闪蒸而除去。这些轻烃对从原油和冷凝物中汽提Hg-0非常有效。原油和冷凝物中残留的是颗粒状的辰砂，β-HgS。在胺处理机和乙二醇脱水器中，气体中的一部分Hg-0可以与微量的氧气反应生成热稳定的盐。这些可以进一步反应形成富汞污泥。实验的成功对行业了解汞在极性溶剂中的行为，气体水合物的抑制以及在乙二醇和胺接触器中的行为将是有用的。 （C）2017 Elsevier Ltd.保留所有权利。

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