Destruction of Chemical Agents in a Plasma Reactor with Working Gas of Hydrogen

<div class="s1listtd6r" style="width: 700px; float: left; min-height: 18px; height: auto; display: table; padding: 3px 1px; font-family: Simsun"><span style="color: red">In</span> this paper, an AC <span style="color: red">plasma</span> arc <span style="color: red">reactor</span><span style="color: red">with</span><span style="color: red">working</span><span style="color: red">gas</span><span style="color: red">of</span><span style="color: red">hydrogen</span> is applied to destruct <span style="color: red">chemical</span><span style="color: red">agents</span>. The temperature attains 6000℃ <span style="color: red">in</span> the arc area and over 2000℃ <span style="color: red">in</span> the other space <span style="color: red">of</span> the crucible. The Arsenic (As) contained <span style="color: red">chemical</span> agent -Adams (DM) used <span style="color: red">in</span> the experiment, was added into the <span style="color: red">plasma</span><span style="color: red">reactor</span><span style="color: red">with</span> the additives: Fe, CaO, and SiO_2, etc. Pyrolysis and <span style="color: red">destruction</span><span style="color: red">of</span><span style="color: red">chemical</span><span style="color: red">agents</span> occurs very quickly <span style="color: red">in</span> the high-temperature <span style="color: red">reactor</span>. Gaseous <span style="color: red">hydrogen</span> was injected into the <span style="color: red">reactor</span> to form <span style="color: red">a</span> reductive environment, to reduce the formation <span style="color: red">of</span> As_2O_3 etc. <span style="color: red">In</span> the bottom <span style="color: red">of</span> the crucible, the solid residues <span style="color: red">of</span> toxicant and additives were melted and formed as vitrified slag. The off-<span style="color: red">gas</span> was treated by <span style="color: red">a</span> wet scrubber. The amounts <span style="color: red">of</span> arsenic distributed <span style="color: red">in</span> the off-<span style="color: red">gas</span>, vitrified slag, waste water and solids (soot) were measured. The result shows DM is completely destructed <span style="color: red">in</span> the <span style="color: red">plasma</span><span style="color: red">reactor</span>. The Arsenic content <span style="color: red">in</span> the off-<span style="color: red">gas</span>, vitrified slag, waste water and soot are 0.052 mg/l, 3.0%, 10.44 mg/l, and 5.1% respectively, which will be disposed as the pollutant matters. The results show that the <span style="color: red">plasma</span> technology is an environmentally friendly technology to destruct chemicals.</div>