Experimental research on emission and removal of dioxins in flue gas from a co-combustion of MSW and coal incinerator.
This paper describes the experimental study of dioxins removal from flue gas from a co-combustion municipal solid waste and coal incinerator by means of a fluidized absorption tower and a fabric filter. A test rig has been set up. The flow rate of flue gas of the test rig is 150-2000 m3/h. The system was composed of a humidification and cooling system, an absorption tower, a demister, a slurry make-up tank, a desilter, a fabric filter and a measurement system. The total height of the absorption tower was 6.5m, and the diameter of the reactor pool was 1.2 m. When the absorbent was 1% limestone slurry, the recirculation ratio was 3, the jet rate was 5-15 m/s and the submerged depth of the bubbling pipe under the slurry was 0.14 m, the removal efficiency for dioxins was 99.35%. The concentration of dioxins in the treated flue gas was 0.1573 x 10(-13)kg/Nm3 and the concentration of oxygen was 11%. This concentration is comparable to the emission standards of other developed countries.
Zhong
Zhaoping
Z
Department of Power Engineering, Research Institute of Thermal Energy Engineering, The Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education, Southeast University, Nanjing 210096, PR China. zzhong@seu.edu.cn
Jin
Baosheng
B
Huang
Yaji
Y
Zhou
Hongcang
H
Lan
Jixiang
J
D000327:Adsorption; D000393:Air Pollutants / Q000032:analysis* / Q000737:chemistry; D000397:Air Pollution / Q000517:prevention & control*; D002244:Carbon / Q000737:chemistry*; D004147:Dioxins / Q000032:analysis* / Q000737:chemistry; D005374:Filtration; D005740:Gases; D017745:Incineration; D012037:Refuse Disposal / Q000379:methods*
D000393:Air Pollutants; D004147:Dioxins; D005740:Gases; D002244:Carbon