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摘要
以氧化铝分子球为载体、硫化铜为活性物质,采用浸渍工艺制备了硫化铜脱汞剂。利用固定床汞吸附装置研究了铜盐浓度、浸渍比、焙烧温度及烘干温度等工艺参数对硫化铜脱汞剂脱汞性能的影响,结合XPS对制备的各个步骤中前驱体有效成分进行了表征。实验结果表明,铜盐质量分数为15%、浸渍比为60 mL铜盐溶液:20 g氧化铝、焙烧温度为150℃及烘干温度为30℃时,实验制备得到的硫化铜脱汞剂脱汞性能最佳,汞容达到8.925×10-4 g/g。其脱汞性能随焙烧温度、铜盐质量分数和浸渍比的增大先升后降,随烘干温度升高持续降低。
Abstract
Copper sulfide for removing mercury is prepared through impregnation process with alumina molecular ball as carrier and copper sulfide as active substance,and the effective components of precursors in each step of preparation are characterized by XPS.The influences of technological parameters such as copper salt concentration,impregnation ratio,calcination and drying temperature on the performance of copper sulfide for removing mercury are studied in a fixed bed mercury adsorption device.Experimental results show that the prepared copper sulfide exhibits the best performance in removing mercury,with a mercury capacity of 8.925×10-4 g·g-1 when the copper salt concentration is 15%,the impregnation ratio is 60 ml of copper salt solution to 20 g of alumina,the calcination temperature maintains at 150℃ and the drying temperature is at 30℃.The mercury-removing performance of copper sulfide increases at first and decreases later with the rising calcination temperature,copper salt concentration and immersion ratio,but continuously decreases with the increase of drying temperature.
关键词
汞
/
汞吸附量
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天然气
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硫化铜
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浸渍法
Key words
Hg0
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adsorption capacity to mercury
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natural gas
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copper sulfide
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impregnation method
Author summay
齐璞(1992-),男,硕士研究生,研究方向为天然气净化脱汞,312824350@qq.com
硫化铜脱汞剂的制备及脱汞性能研究[J].
现代化工, 2020, 40(4): 94-98 DOI:10.16606/j.cnki.issn0253-4320.2020.04.021