An experimental study on SF6 gas decomposition by silent discharge process and fixation of by-products on calcium hydroxide

In this work, a dry decomposition process of sulfur hexafluoride (SF₆) gas is experimentally investigated in follows: the first procedure to electrochemically decompose the SF₆ molecules by silent discharge impacts and the second procedure of chemical fixation of some by-products on absorbent materials. The experiment conducted to examine an influence factor on SF₆ decomposition rate for atmospheric pressure discharges and the chemical fixation on calcium hydroxide (Ca(OH)₂). As an experimental result, it became clear that the decomposition rate was indicated with a rate law of primary reaction for the SF₆ concentration. The application of the chemical fixation on Ca(OH)₂ was enabled us to remove the toxic by-products except SO₂F₂ molecules, and this fact indicated utility of the dry processing as recycling technology.