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浙江大学学报(工学版)
JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE)
Civil and Traffic Engineering     
Experimental of enhancement of simultaneous removing fine particle by sieve tray spray scrubber
ZHANG Jun, LI Cun jie, ZHENG Cheng hang, WENG Wei guo, ZHU Song qiang, WANG Ding zhen, GAO Xiang, CEN Ke fa
1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China;
2. Zhejiang Provincial Energy Group Company Co., Ltd. Hangzhou 310006, China
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Abstract  

A new sieve stray spray scrubber, which can promote the mass transfer of gas-liquid-solid system, was proposed in order to improve the fine particle removal efficiency in wet flue gas desulfurization (FGD) system.A pilot-scale wet FGD system was developed to study the removal characteristics of fine particles.The effects of flue gas flow rate, liquid flow rate, fly-ash loading and particle size on the fine particle removal efficiency were investigated.Results show that the fine particle removal efficiency is higher than 90% under typical working condition, of which the maximum exceeds 95%. The removal efficiency increases with the increase of flue gas flow rate, liquid flow rate and the concentration of particles.The fractional removal efficiency is a V-shaped curve with a minimum at 0.2 to 1.0 μm. The sieve tray spray scrubber has a better performance than the ordinary spray scrubber under the same conditions; the total removal efficiency and removal efficiency at 0.2-1.0 μm can be improved more than 5% and 11%, respectively.

Published: 01 August 2016
CLC:  X 511  
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ZHANG Jun, LI Cun jie, ZHENG Cheng hang, WENG Wei guo, ZHU Song qiang, WANG Ding zhen, GAO Xiang, CEN Ke fa. Experimental of enhancement of simultaneous removing fine particle by sieve tray spray scrubber. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2016, 50(8): 1516-1520.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2016.08.013     OR     http://www.zjujournals.com/eng/Y2016/V50/I8/1516


筛板塔细颗粒物协同脱除特性实验

针对常规喷淋空塔无法满足颗粒物协同控制的难题,提出筛板塔强化传质实现协同脱除的方法.基于湿法烟气脱硫中试试验平台,考察湿法烟气脱硫关键工艺参数,包括烟气流速、浆液喷淋量、飞灰浓度、颗粒粒径等对细颗粒物脱除效率的影响规律,并与喷淋空塔脱除特性进行对比.结果表明,在实验工况下,细颗粒物脱除效率大于90%,最高超过95%|脱除效率随烟气流速、颗粒物浓度及浆液喷淋量的增大而提高.颗粒物分级脱除效率曲线呈“V”形分布特性,在0.2~1.0 μm粒径范围内脱除效率最低|在相同条件下,筛板塔细颗粒物脱除效果显著优于喷淋塔,在0.2~1.0 μm粒径段的脱除效率与总脱除效率较喷淋塔分别提高11%和5%以上.

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