Magnetic separation of submicron particles from aerosol phase

被引:0
作者
Jaworek, A. [1 ]
Marchewicz, A. [1 ]
Czech, T. [1 ]
Krupa, A. [1 ]
Sobczyk, A. T. [1 ]
Adamiak, K. [2 ]
机构
[1] Polish Acad Sci, Inst Fluid Flow Machinery, Gdansk, Poland
[2] Univ Western Ontario, Dept Elect & Comp Engn, London, ON, Canada
来源
ENVIRONMENTAL ENGINEERING V | 2017年
基金
加拿大自然科学与工程研究理事会;
关键词
magnetic separation; submicron particles; PM2.5; magnetic quadrupole; COAL FLY ASHES; MULTICOMPONENT UTILIZATION; CHEMICAL-COMPOSITION; AGGREGATION; FILTRATION;
D O I
暂无
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Power plants or solid waste incinerators are the main anthropogenic sources of air contaminants. Bag filters, absorbers, scrubbers or electrostatic precipitators are used for the removal of PM10 and larger particles. PM2.5 particles are difficult to remove by these methods. Recently, attention was drawn towards magnetic separation as an effective method for these particles removal because magnetic properties of submicron particles can be superparamagnetic that facilitates their motion towards the magnetic poles. In this paper, a quadrupole type magnetic separator for the collection of fly ash particles has been investigated. The trajectories of ferromagnetic particles were analyzed in order to determine the collection efficiency of particles by the magnetic separator. The results show that ferromagnetic particles larger than 1 micron can be removed with efficiency higher than 99% in 7-stack quadrupole system, while smaller particles require longer stacks. The collection efficiency was higher for smaller space between the stacks.
引用
收藏
页码:137 / 144
页数:8
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