Hg0 Removal Capacity of Loaded Copper Sulfide Mercury Adsorbents for Natural Gas

2018 International Conference on Smart Grid and Electrical Automation (ICSGEA) Pub Date : 2018-06-01 DOI:10.1109/ICSGEA.2018.00014

Han Zhongxi, Li Na, D. Yufeng, Li Jian, Yan Qi-tuan, Meng Jialin, Wei Hongqi

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引用次数: 3

Abstract

A loaded copper sulfide was explored as a mercury adsorbent used in natural gas. Mercury adsorption experiments were carried out on a fixed-bed experimental device. The performance and HgÂ° capacity of loaded copper sulfide and sulfur-loaded activated carbon were compared. The physico-chemical properties before and after adsorption were characterized and compared by means of surface area and porosity analysis, scanning electron microscopy, X-ray diffractometer and X-ray photoelectron spectroscopy analyzer. The thermal desorption experiment was conducted in a tubular furnace, and the mercury adsorption form was obtained. The experimental results showed that the mercury removal efficiency reached the highest at the temperature of 100Â°C. The mercury removal efficiency decreased with the increase of mercury concentration and increased with the quantities of adsorbents. Under the experimental conditions, the Hg0 removal efficiency of the loaded copper sulfide was better than the sulfur-loaded activated carbon. The mechanism of mercury removal lied in the Cu2+ oxidation to Hg0, and the main adsorption morphology of loaded copper sulfide was HgS.

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负载硫化铜汞吸附剂对天然气中Hg0的去除能力

研究了一种负载硫化铜作为天然气中的汞吸附剂。在固定床实验装置上进行了汞吸附实验。比较了负载硫化铜和负载硫活性炭的性能和HgÂ°容量。采用比表面积、孔隙度分析、扫描电镜、x射线衍射仪、x射线光电子能谱仪等对吸附前后的理化性质进行了表征和比较。在管式炉上进行了热解吸实验，得到了汞的吸附形态。实验结果表明，当温度为100Â℃时，除汞效率最高。除汞效率随汞浓度的增加而降低，随吸附剂用量的增加而增加。在实验条件下，负载硫化铜的Hg0去除率优于负载硫的活性炭。除汞机理为Cu2+氧化成Hg0，负载硫化铜的主要吸附形态为HgS。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 International Conference on Smart Grid and Electrical Automation (ICSGEA)

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