超重力尿素湿法烟气脱硝技术的研究

杨晖;陈建铭;宋云华*

北京化工大学学报(自然科学版) ›› 2012, Vol. 39 ›› Issue (1) : 12-16.

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北京化工大学学报(自然科学版) ›› 2012, Vol. 39 ›› Issue (1) : 12-16.
化学与化学工程

超重力尿素湿法烟气脱硝技术的研究

  • 杨晖;陈建铭;宋云华*
作者信息 +

Wet flue gas denitrification using a urea solution and high gravity technology

  • YANG Hui;CHEN JianMing;SONG YunHua
Author information +
文章历史 +

摘要

通过考察氮氧化物湿法吸收机理,对NOx液相吸收的传质理论进行了相关分析。采用定-转子反应器(RSR)作为新型吸收设备,对尿素溶液吸收氮氧化物废气的工艺条件进行了试验研究,考察了液体流量、进气流量、定-转子反应器转速、尿素含量及吸收温度等因素对NOx脱除率的影响,确定了脱除NOx的最佳条件。试验结果表明,对定-转子反应器内部结构为SS-RH这种组合,最佳操作参数为液体流量0.2m3/h、进气流量0.2m3/h、定-转子反应器转速1400r/min、尿素溶液质量分数20%、吸收温度60℃。在此条件下,NOx的脱除率可达到63%。

Abstract

Based on the wet-process absorption mechanism, a mass transfer theory of NOx absorption by a liquid is introduced. A rotor-stator reactor is proposed as a new type of absorber. The effects of varying the experimental parameters—such as liquid flow, inlet gas flow, rotation speed, concentration of urea, and temperature—have been investigated. The results indicated that the optimum operational parameters of SS-RH were as follows: liquid flow of 0.2m3/h, inlet gas flow of 0.2m3/h, rotation speed of 1400r/min, mass fraction of urea of 20%, and temperature of 60℃. Under these conditions, the removal ratio of NOxcan reach 63%.

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杨晖;陈建铭;宋云华*. 超重力尿素湿法烟气脱硝技术的研究[J]. 北京化工大学学报(自然科学版), 2012, 39(1): 12-16
YANG Hui;CHEN JianMing;SONG YunHua. Wet flue gas denitrification using a urea solution and high gravity technology[J]. Journal of Beijing University of Chemical Technology, 2012, 39(1): 12-16

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