DocumentCode
518384
Title
Notice of Retraction
Study on flyash characteristics and its effect on mercury removal in coal-fired derived flue gas
Author
Jiang Wu ; Yanyan Zhang ; Weiguo Pan ; Ping He ; Jianxing Ren ; Ruitang Guo ; Lei Pan ; Peng Wang
Author_Institution
Sch. of Energy & Environ. Eng., Shanghai Univ. of Electr. Power, Shanghai, China
Volume
5
fYear
2010
fDate
16-18 April 2010
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
In this paper, fly ash sampled at ESP inlet and outlet in a coal fired power station was analyzed, and its characteristics and effect on mercury removal were experimentally studied. It shows that particles consisted in the fly ash are mostly smaller than 50-100 μm , and some were even smaller than 10 μm. The main contents in the fly ash were attained through approximate and ultimate analysis. BET surface area, t-plot external surface area, single point adsorption total volume of pores, cumulative volume of pores, average pore width, and BJH average pore width were studied. This characteristics is the fundamental factors that can explain the effect of fly ash on mercury in the flue gas, and different fly ashes show significant differences in mercury removal. It was found that the fly ash can absorb mercury to a certain extent in the flue gas, mercury removal rate can reach 40% at maximum. About the influence factors, longer residence time and higher injection rate help improving mercury removal. It shows a higher mercury removal efficiency in compressed air than in flue gas. The temperature inside the duct also has effect on the mercury adsorption efficiency, and fly ash has higher adsorption efficiency at lower temperature.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
In this paper, fly ash sampled at ESP inlet and outlet in a coal fired power station was analyzed, and its characteristics and effect on mercury removal were experimentally studied. It shows that particles consisted in the fly ash are mostly smaller than 50-100 μm , and some were even smaller than 10 μm. The main contents in the fly ash were attained through approximate and ultimate analysis. BET surface area, t-plot external surface area, single point adsorption total volume of pores, cumulative volume of pores, average pore width, and BJH average pore width were studied. This characteristics is the fundamental factors that can explain the effect of fly ash on mercury in the flue gas, and different fly ashes show significant differences in mercury removal. It was found that the fly ash can absorb mercury to a certain extent in the flue gas, mercury removal rate can reach 40% at maximum. About the influence factors, longer residence time and higher injection rate help improving mercury removal. It shows a higher mercury removal efficiency in compressed air than in flue gas. The temperature inside the duct also has effect on the mercury adsorption efficiency, and fly ash has higher adsorption efficiency at lower temperature.
Keywords
flue gases; fly ash; mercury (metal); steam power stations; BET surface area; BJH average pore width; average pore width; coal fired power station; coal-fired derived flue gas; flyash characteristics; mercury removal effect; pore cumulative volume; single point adsorption; t-plot external surface area; Carbon dioxide; Combustion; Ecosystems; Flue gases; Fly ash; Humans; Pollution measurement; Power generation; Sampling methods; Temperature; adsorption; characteristics; effect; fly ash; mercury emission control;
fLanguage
English
Publisher
ieee
Conference_Titel
Computer Engineering and Technology (ICCET), 2010 2nd International Conference on
Conference_Location
Chengdu
Print_ISBN
978-1-4244-6347-3
Type
conf
DOI
10.1109/ICCET.2010.5486112
Filename
5486112
Link To Document