活性粒子注入烟气同时脱硫脱硝实验  

Removal of SO_2 and NO_x at the Same Time by Radical Injection

作　　者：潘巧媛[1] 白敏菂[1] 王永伟[1] 刘妮娜[1] 

机构地区：[1]大连海事大学环境工程研究所,辽宁大连116026

出　　处：《科技导报》2011年第10期34-38,共5页Science & Technology Review

基　　金：国家高技术研究发展计划(863计划)项目(2008AA062317);中华环保基金会项目(CEPF200812313)

摘　　要：采用强电场电离放电技术制取高浓度活性粒子和引发剂,并注入烟气中氧化脱硫脱硝,副产物为硫酸和硝酸,整个过程无催化剂和吸收剂,实现了干法同时脱硫脱硝,并研究了活性粒子注入量、气体温度和气体含水量对同时脱硫脱硝的影响。结果表明,活性粒子注入量是影响脱硫脱硝效率的决定因素,NOx优先SO2脱除,该方法脱硝率可达100%,脱硫率高于60%。温度是影响同时脱硫脱硝效率的另一个主要因素,烟气温度的增高不利于SO2和NOx的脱除。水在羟基自由基形成以及脱硫脱硝过程中起着重要作用,适当增大含水量,可促进SO2、NOx脱除。Using the technique of strong electric field ionization discharge, O2 are ionized, decomposed, and introduced into high activity radicals and O2/H2O is turned into the initiator. SO2 and NOx are oxidized into the droplets of H2SO4 and HNO3 by radicals and the initiator is injected into the reaction chamber with no absorbent and catalyst. It is shown that the mole concentration ratio of oxygen radical to S02 and NO~ is the decisive factor. NOx is removed firstly, and S02 starts to he removed when the removal rate of NOx reaches an optimal value, with n being 2--3. The temperature is a main influencing factor for S02 and NOx removal, a lower temperature is better. H20 plays an important role in forming hydroxyl radical and improving the removal process of SO2 and NOx.

关 键 词：活性粒子注入 羟基自由基 烟气同时脱硫脱硝 影响因素 

分 类 号：X701.3[环境科学与工程—环境工程]