低温常压等离子体分解有害气体SO2和NOx

介绍了在常压低温条件下,用前后沿陡峭的超高压脉冲电晕放电产生非平衡高能等离子体,打开NO_x、SO_2气体分子化学键,在定向作用下,使其分解为无害单原子分子O_2、N_2和单质固体微粒S的技术。NO_x分解率为94.1％;SO_2,分解率为86.7％。单质硫全部吸附在反应器壁上,可以作为工业用硫原料。该技术为治理酸雨效应提供一种有效、可行、低成本、占地少、耗能低和不用外加化学药品的新技术。它的一次投资和日常维护费仅为世界上最先进技术——电子束法和毫微秒高压脉冲电晕放电产生等离子化学法的1/10。

Decomposition of Poisonous Gases SO2 and NOx with Plasma Technique at Low Temperature and Normal Pressure

A kind of unbalanced high energe plasma was produced by corana discharge of ultrahigh valtage pulse with sreep front and bach edges at normal pressure and low temperature conditions. The plasma could break the chemical bonds of NOx, SO2 molecules, and under definitely directional action, the gas molecules could be decomposed into non-poisonous mono-molecular O2, N2 and monoplas-matic particle S. The decomposation rate of NOx was 94.1%, and that of SO2 was 86.7%. All the monoplasmatic sulphur deposited on the wall of reactor, and may be used as industrial material. This is a new technique providing a kind of effective, feasible way in reducing the risk of "acid rain". It has the advantages of low cost, little land occupation, and low energy consumption. Furthermore, no additional chemicals are needed in the mathod of treatment of NOx, SO2 containing waste gases. In comparison with the world advanced technique of electron-beam and nano high-voltage pulse corona discharge, this technique can cut down the first investment and routine operation cost by about 90 percent.