An Experimental Study on SF{sub}6 Gas Decomposition by Silent Discharge Process and Fixation of By-products on Calcium Hydroxide

摘要

In this work, a dry decomposition process of sulfur hexafluoride (SF{sub}6) gas is experimentally investigated in follows: the first procedure to electrochemically decompose the SF{sub}6 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 SF{sub}6 decomposition rate for atmospheric pressure discharges and the chemical fixation on calcium hydroxide (Ca(OH){sub}2). As an experimental result, it became clear that the decomposition rate was indicated with a rate law of primary reaction for the SF{sub}6 concentration. The application of the chemical fixation on Ca(OH){sub}2 was enabled us to remove the toxic by-products except SO{sub}2F{sub}2 molecules, and this fact indicated utility of the dry processing as recycling technology.