39 石炭ガス化ガス中の水銀除去剤としての活性炭の特性(灰・微量金属(1))

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In this work we studied the Hg removal in coal gasification fuel gas by activated carbons (ACs) obtained from coconut shell, phenol resin and ion-exchange resin. ACs showed higher Hg removal performance in the presence of HCl than in the absence of HCl in the fuel gas mixture. After Hg removal experiments, temperature programmed decomposition and desorption (TPDD) method was used to study the stability of mercury species formed on the sorbents. It was found that the treatment of AC with aqua regia as a regeneration method of the spent sorbents affected the mercury removal character of the AC. The HCl remained on the surface of the aqua regia-treated AC resulted in high Hg removal performance of the aqua regia-treated AC. In TPDD experiments it was observed that the mercury evolution peak temperature shifted to higher temperature due to aqua regia treatment of the AC.
一般社団法人日本エネルギー学会の論文
2008-10-09