塔体倾斜条件下船舶尾气SO<sub>2</sub>洗涤脱除强化

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摘要针对恶劣海况下船舶洗涤塔倾斜的情况，利用船舶尾气净化小试试验台，开展了洗涤塔不同倾斜角度下对镁基吸收剂脱硫效率影响的实验，研究了液气比、入口SO₂浓度、烟气量、浆液pH值、对洗涤塔内SO₂脱除效率的影响.结果表明：脱硫效率随洗涤塔倾角度的增大而降低.脱硫效率随液气比的增大而升高，较低的液气比时倾斜角度对SO₂脱除效率的影响更明显；脱硫效率随SO₂入口浓度的增大而略微降低，入口SO₂浓度较高时，SO₂脱除效率的降低随倾斜角度的增加变化较为明显；相同液气比条件下，脱硫效率随塔内烟气量的增加而升高；脱硫效率随浆液pH值的增大而升高，低pH值时SO₂脱除效率的降低随倾斜角度的增加变化较为明显.筛板-边壁环的加入可有效提高倾斜条件下洗涤塔的脱硫效率，倾斜角度为15°时，脱硫效率提高将约3%；倾斜角度为10°时，脱硫效率提高约5%；倾斜角度在5°以下时，脱硫效率可提高将近7%.

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	刘昶
	王丁振
	张涌新
	赵中阳
	吴卫红
	沈敏强
	戴豪波
	郑成航
	高翔

关键词 ：洗涤塔, 倾斜, 镁基吸收剂, 脱硫效率, 塔内构件

Abstract：The SO₂ removal efficiency of magnesia-based absorbent for different absorber inclined angles was investigated, aiming at desulfurization enhancement of the swing condition of ship absorber under severe sea conditions. The effects of liquid-gas ratio, inlet SO₂ concentration, flow gas flow rate, pH value on desulphurization efficiency in scrubber tower were studied. The results showed that the desulfurization efficiency decreased with the increasing of inclined angle and the decreasing of the liquid-gas ratio, and the influence of inclined angle on desulfurization efficiency was more obvious at lower liquid-gas ratio. The desulfurization efficiency increased with the increasing of flue gas flow rate and pH value. For different pH values & inlet SO₂ concentrations, the variation range of desulfurization efficiency caused by inclined angles was different. The sieve tray and distribution ring improved the desulfurization efficiency of the absorber under swing condition effectively. When the inclined angle was 15°, the desulfurization efficiency increased by about 3%, while the desulfurization efficiency increased by about 5% at the inclined angle of 10°. When the inclined angle was below 5°, the desulfurization efficiency could be improved by nearly 7%.

Key words： scrubber inclination magnesia-based absorbent desulfurization efficiency internals

收稿日期: 2020-10-15

PACS:

X511

基金资助:国家自然科学基金资助项目（U1609212，51621005）

通讯作者: 高翔,教授,xgao1@zju.edu.cn E-mail: xgao1@zju.edu.cn

作者简介: 刘昶(1997-),男,北京人,浙江大学能源工程学院博士研究生,主要研究方向为大气环境污染治理.发表论文1篇.

引用本文:

刘昶, 王丁振, 张涌新, 赵中阳, 吴卫红, 沈敏强, 戴豪波, 郑成航, 高翔. 塔体倾斜条件下船舶尾气SO₂洗涤脱除强化[J]. 中国环境科学, 2021, 41(6): 2571-2576. LIU Chang, WANG Ding-zhen, ZHANG Yong-xin, ZHAO Zhong-yang, WU Wei-hong, SHEN Min-qiang, DAI Hao-bo, ZHENG Cheng-hang, GAO Xiang. Investigation of SO₂ removal enhancement from marine flue gas under scrubber swing condition. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(6): 2571-2576.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2021/V41/I6/2571

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