Regenerable magnetic sorbents for Hg~0 capture and oxidation in flue gas

机译：烟气中Hg〜0捕集和氧化的可再生磁性吸附剂

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The metal oxide-loaded ferrospheres had higher Hg~0 capture and oxidation capacity compared to the raw ferrospheres. Spent Co-MF sorbent with adsorbed mercury could be regenerated through heating at 400 °C, however, the Hg~0 oxidation capacity of regenerated Mn-MF and Cu-MF sorbent sharply decreased due to the variation of Mn and Cu oxide crystal structure after heating at 500 °C. SO_2 displayed significant inhibition to the Hg~0 oxidation capacity of Co-MF. The spent metal oxide-loaded ferrospheres could be easily separated from fly ash using magnetic separation to regenerate and recycle because of the magnetism of ferrospheres. However, eliminating the effect of SO_2 poisoning on Co-MF is the key challenge to effectively utilize Co-MF in Hg~0 oxidation in actual coal combustion flue gas.

机译：载有金属氧化物的铁球比原始铁球具有更高的Hg〜0捕获和氧化能力。消耗掉的吸附有汞的Co-MF吸附剂可以通过在400°C下加热而再生，但是，由于Mn和Cu氧化物晶体结构的变化，再生后的Mn-MF和Cu-MF吸附剂的Hg〜0氧化能力急剧下降。在500°C加热。 SO_2对Co-MF的Hg〜0氧化能力具有明显的抑制作用。由于铁球的磁性，可以使用磁分离法很容易地将负载了废金属氧化物的铁球与粉煤灰分离，以进行再生和再循环。然而，消除SO_2中毒对Co-MF的影响是在实际燃煤烟气中有效利用Co-MF进行Hg〜0氧化的关键挑战。

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《Air and Waste Management Association annual conference and exhibition》|2014年|666-671|共6页
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Jianping Yang; Yongchun Zhao; Junying Zhang; Chuguang Zheng;
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Regenerable magnetic sorbents for Hg~0 capture and oxidation in flue gas

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