摘要
热化学脱硫法因铵盐回收率低、产物不稳定，无法解决实用化问题。氧化热化学法应用超强脉冲电场产生高浓度、高能量的活性粒子，使ＳＯ２在氧化过程中生成Ｈ２ＳＯ４，与ＮＨ３进行热化学反应，生成稳定的固体微粒（ＮＨ４）２ＳＯ４，用电收尘器加以回收。脱除率、回收率可达９０％左右，脱除１ｍ３烟气中ＳＯ２耗能为４Ｗｈ，实现了干法高效脱硫。一次投资大幅度减少，回收铵盐基本上抵消了药品费和电费。
Removal of SO2 by thermal chemical method can not be applied due to low collection efficiency of ammonium salts and unstable products. Oxidized ·thermal chemical method applies ultrahigh pulse electric field to produce activated particles of high concentration、high energy , so that SO2 is oxidized to produce H2SO4 and further form stable solid particles (NH4)2SO4 after thermal chemical reaction with NH3,which is collected in electrostatic precipitator (EP).The rate of SO2 removal and collection is up to 90%,and energy consumption in 1m3 flue gas is 4Wh.Therefore,the SO2 removal of high effective dry method is realized.With this method,the once investment is diminished greatly,and the expenses for additive NH3 and electricity are offsetted by the profits of the collection ammonium salts.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1998年第4期324-327,共4页
China Environmental Science
关键词
热化学
氧化
活性粒子
脱硫
烟气脱硫
废气处理
thermal chemistry oxidization activated particles collection efficiency
