SNCR脱硝技术在废液焚烧中的应用

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英文篇名：Application of SNCR Denitration Technology in Waste Liquid Incineration 作者：吉彦鹏 ; 丁朝阳 英文作者：Ji Yanpeng;Ding Zhaoyang;Xi'an Aerospace Source Power Engineering CO.,LTD.; 关键词：废液焚烧 ; 氮氧化物 ; SNCR脱硝 英文关键词：waste liquid incineration;;nitrogen oxides;;SNCR denitration 中文刊名：当代化工研究 英文刊名：Modern Chemical Research 机构：西安航天源动力工程有限公司; 出版日期：2019-03-12 10:08 出版单位：当代化工研究 年：2019 期：03 语种：中文; 页：12-13 页数：2 CN：10-1435/TQ ISSN：1672-8114 分类号：X701

摘要

SNCR(选择性非催化还原脱硝技术)因系统简单,投资低,已被广泛应用于废液焚烧烟气处理中,氮氧化物的脱除效率可达50%左右,在设计时需综合考虑反应温度、停留时间、混合情况、氨氮摩尔比对脱硝效率的影响,选择合适的喷枪布置位置,分梯度在不同的位置布置以满足不同负荷下的脱硝要求。同时喷枪要保证良好的雾化效果。对于烟气中氮氧化物浓度较高的废液,再辅以其他脱除技术(SCR等),分阶段脱除,最终方可满足排放要求。
        SNCR(selective non-catalytic reduction denitrification technology) has been widely used in waste liquid incineration flue gas treatment because of its simple system and low investment. The removal efficiency of nitrogen oxides can reach about 50%. In the design process,the effects of reaction temperature, residence time, mixing condition and ammonia-nitrogen molar ratio on the denitrification efficiency should be considered comprehensively. The suitable position of spray gun should be selected and gradients should be arranged in different positions to meet the denitrification requirements under different loads. Meanwhile, the spray gun must ensure good atomization effect. For the wastewater with high concentration of nitrogen oxides in flue gas, it can be removed by stages with other removal technologies(SCR, etc.) and finally meet the emission requirements.

引文

[1]李庆辉.药业公司危险废物资源化处理工艺方案设计[M].山东大学.
    [2]张定海.CFB锅炉SNCR脱硝技术研发[J].发电设备,2013,27(02):129-132.