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Case study: Refinery mercury chemical decontamination in preparation for decommissioning

机译：案例研究：炼油厂汞化学净化为退役做准备

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摘要

Initial mercury management strategies began in 2010 at a US refinery processing approximately 200 Mbpd of North Slope crude oil. During maintenance and inspection activities in 2010, elemental mercury was observed in hydrocarbon processing vessels throughout the solvent extraction unit (SEU) (FIG. 1), with interior vessel mercury vapor concentrations greater than 500 micrograms per cubic meter (μg/m~3). Based on this observation, studies were conducted to assess the distribution and accumulation of mercury in primary process units that were previously scheduled for maintenance and inspection operations. Mercury mass loading rates in steel process systems were integrated with data from the measurement and monitoring of mercury in process streams and wastes to develop a robust mercury flux model. Effective mercury management and chemical decontamination plans were developed based on the model and successfully implemented in 2011.
机译：最初的汞管理策略始于2010年，该厂位于美国的一家炼油厂，加工约200 Mbpd的North Slope原油。在2010年的维护和检查活动中，在整个溶剂萃取装置（SEU）的烃加工容器中观察到元素汞（图1），容器内部的汞蒸气浓度大于500微克/立方米（μg/ m〜3） 。基于此观察结果，进行了研究，以评估先前计划进行维护和检查操作的主要工艺单元中汞的分布和累积。钢铁工艺系统中的汞质量负载率与工艺流程和废物中汞的测量和监测数据集成在一起，从而建立了可靠的汞通量模型。根据该模型制定了有效的汞管理和化学净化计划，并于2011年成功实施。

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