氧活性粒子脱除烟气中SO2的实验研究

为了解决目前气体电离放电脱硫方法存在的等离子源体积庞大、能耗高、以及需要依靠传统脱硫方法的协同作用等问题.拟用小流量高浓度氧活性粒子O2+、O(1D)、O(3P)、O3]及引发剂HO2-分别注入烟道中,与烟气中H2O反应生成·OH;在无吸收剂、无催化剂及没有其他技术协同作用下,进行·OH氧化脱除大烟气量中的微量SO2并生成H2SO4的实验.结果表明:烟气温度为30℃,氧活性粒子与SO2摩尔比为3~4时,脱硫率达到94.6%,回收酸液中SO42-浓度达到9.3g/L.

Exprimental study on removal SO_2 from flue gas using active oxygen species

A new methods for desulfurization was required to overcome problems with desulfurization by gas ionization discharge, including the large size of the plasma source, high energy consumption, and the need for the synergy of a traditional desulfurization method. Active oxygen species (e.g. O2+, O(1D), O(3P), O3) and HO2- initiators were injected under low-flow and high-concentration conditions into a flue to reach with H2O in the flue gas to generate ·OH radicals, which can oxidize micro SO2 from a large number of the flue gas to produce H2SO4 liquid without the use of absorbents and catalysts and other technologies coordination. As the gas temperature was 30℃ and the molar ratio was between 3 to 4, at which point the SO2 removal efficiency was 94.6%, and the SO42- concentrations in the recovered acid liquid was 9.3 g/L.