喷射鼓泡塔海水脱硫特性

发布时间：2018-02-01 22:31

本文关键词： 海水喷射鼓泡塔传质反应动力学气泡脱硫效率　出处：《化工学报》2016年04期 　论文类型：期刊论文

【摘要】：为探究以海水作为脱硫剂在喷射鼓泡塔上的脱硫特性,通过改变废气流量、海水温度、浸液深度、SO_2进口浓度和O_2浓度等操作参数,在自主设计和搭建的喷射鼓泡塔实验平台上进行了船舶模拟废气的脱硫实验。实验结果表明:在喷射鼓泡塔上,海水对SO_2的吸收容量为3.682 mmol·L~(-1),约是去离子水的3.92倍;脱硫效率随废气流量、海水温度和SO_2进口浓度的升高而降低,随浸液深度和O_2浓度的升高而升高,与脱硫时间呈线性下降关系。液相总传质系数随废气流量和海水温度的增加而增加,其中废气流量的影响幅度较小,仅为3.16%。增加O_2浓度可显著提高海水对SO_2的吸收容量,O_2浓度从0%增至12%时,海水的吸收容量从3.682 mmol·L~(-1)增至7.463 mmol·L~(-1)。
[Abstract]:In order to study the desulphurization characteristics of seawater as desulfurizer in jet bubbling tower, the operating parameters such as exhaust gas flow, seawater temperature, depth of sop, inlet concentration of SOD2 and concentration of O _ 2 were changed. The desulfurization experiment of ship simulated exhaust gas was carried out on the experimental platform of jet bubble tower designed and built by ourselves. The experimental results show that the desulfurization experiment is carried out on the jet bubble tower. The absorption capacity of SO_2 in seawater was 3.682 mmol 路L ~ (-1) ~ (-1), about 3.92 times of that of deionized water. The desulphurization efficiency decreases with the increase of exhaust gas flow, seawater temperature and inlet concentration of SO_2, and increases with the increase of the depth of leaching solution and the concentration of O _ 2. The total mass transfer coefficient of liquid phase increases with the increase of exhaust gas flow and seawater temperature, and the influence of exhaust gas flow is small. Increasing the concentration of O _ 2 can significantly increase the absorption capacity of SO_2 from 0% to 12. The absorption capacity of seawater increased from 3.682 mmol 路L ~ (-1) to 7.463 mmol 路L ~ (-1).
【作者单位】：能源热转换及其过程测控教育部重点实验室(东南大学);
【分类号】：X736.3
【正文快照】： 引言船舶柴油机排放的SO2是形成酸雨的一大原因。据统计[1],全球船舶SO2年排放量达到900多万吨,约占世界SO2排放总量的7%,约占整个运输行业SO2排放量的60%,船舶柴油机SO2的排放Received date:2015-08-21.Corresponding author:Prof.CHEN Xiaoping,xpchen@seu.edu.cn第4期张清

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