反应温度对二恶英降解效率的影响

Effect of fly ash's particle size on dioxins degradation efficiency

低温热脱氯工艺是一种常见的垃圾焚烧炉飞灰中二恶英分解的技术,一方面可以高效脱除大部分二恶英,但是另一方面也容易产生额外的二恶英。为进一步提高对二恶英的降解效率,本文将低温热脱氯工艺与Ti O2/Mo S2复合催化剂光催化降解技术相结合,研究反应温度对二恶英降解效率的影响。文中设计的组合中,以1h 350°C热脱氯和2h光催化降解的效果最佳,对二恶英的组合降解效率可以达到85.28%,无害化处理效率则高达96.01%,降解后的飞灰完全符合安全排放标准。

Low temperature thermal dechlorination process is a common technique of decomposing dioxins from Municipal Solid Waste Incineration Ash. On the one hand, this technique can efficiently remove most dioxin congeners, but on the other hand it is also easy to produce additional dioxin. In order to further improve the degradation efficiency of dioxin, we combine techniques of low temperature thermal dechlorination process and molybdenum disulfide composite pillared by titanium dioxide photocatalytic degradation. We make a study on how reaction temperature effect on the decomposition efficiency of dioxins. In this paper, the design of 1h 350°C thermal dechlorination process and 2h molybdenum disulfide composite pillared by titanium dioxide photocatalytic degradation has the lowest decomposition efficiency of dioxins. The degradation rate can reach 85.28%,decontamination efficiency is as high as 96.01%, and the fly ash after degradation can also demand emission standards.