乾式還元プロセスを用いた燃焼排ガス中の水銀連続分析装置に関する研究

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タイトル別名
  • Study on Continuous Mercury Analyzer with Dry-type Reduction Process for Flue Gas.
  • カンシキ カンゲン プロセス オ モチイタ ネンショウ ハイガス チュウ ノ スイギン レンゾク ブンセキ ソウチ ニ カンスル ケンキュウ

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抄録

In this study, dry-type reduction of mercury (II) chloride experiments were conducted using a packed bed with granular tin metal. The purpose of this study was to identify factors effecting the dry-type reduction process and to elucidate the reaction mechanism. In the reduction of mercury (II) chloride, the ratio of chlorinated surface area on tin was a vital factor. Precoating the surface of granular tin metal with 1N hydrochloric acid was effective in maintaining the reducibility. Marcury (II) chloride was reduced to mercury (0) vapor by the following two reactions on the chlorinated surface of tin metal.<BR>SnCl2 (s) + HgCl2 (g)→SnCl4 (g) + Hg (g)<BR>SnCl2 (s) + HgCl2 (g) + 2H20 (g)→SnO2 (s) + Hg (g) + 4HCl (g)<BR>Also, it is presumed that decreased reducibility was the result of the following oxidative reactions with tin (II) chloride.<BR>SnCl2 (s) + H2O (g)→SnO (s) + 2HCl (g)<BR>SnCl2 (s) + H2O (g) + 1/2O2 (g)→SnO (s) + 2HCl (g)

収録刊行物

  • 大気環境学会誌

    大気環境学会誌 35 (6), 332-342, 2000

    公益社団法人 大気環境学会

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