Impact of the mercury removal system using modified fly ash on particulate matter emission

Fuel ◽  
2021 ◽  
Vol 301 ◽  
pp. 121054
Author(s):  
Yue Peng ◽  
Tao Wang ◽  
Yongzheng Gu ◽  
Jiawei Wang ◽  
Yongsheng Zhang ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Fly Ash ◽  
Mercury Removal ◽  
Particulate Matter Emission ◽  
Modified Fly Ash ◽  
Removal System

Experimental Research on Fly Ash Modified Adsorption of Mercury Removal Efficiency of Flue Gas

2013 ◽  
Vol 800 ◽  
pp. 132-138 ◽  
Author(s):  
Li Li ◽  
Si Wei Pan ◽  
Jiang Jun Hu ◽  
Ji Fu Kuang ◽  
Min Qi ◽  
...  
Keyword(s):  
Fly Ash ◽  
Removal Efficiency ◽  
Flue Gas ◽  
Power Plants ◽  
Physical Adsorption ◽  
Adsorption Properties ◽  
Mercury Removal ◽  
Immersion Method ◽  
Adsorption Temperature ◽  
Modified Fly Ash

Mercury in the flue gas in coal-fired power plant as the research object using halogen compound as the modified material, the fly ash was modified by chemical immersion method，Study on adsorption agent, the adsorption temperature, modified material and loading on mercury adsorption of flue gas in coal-fired power plants. Experiments showed that, iodine adsorption properties of modified fly ash was the most significant, with the increase of the sorbent dosage, Hg removal efficiency increased, fly ash adsorption amount of change was not obvious, between 80-140°C temperature range, fly ash on mercury existed mainly physical adsorption, the mercury removal efficiency decreased with the increase of temperature, chemical adsorption occurred at 160°C, mercury removal efficiency increased.

scholarly journals Mercury Removal From Coal Combustion Flue Gas by Pyrite-Modified Fly Ash Adsorbent

2021 ◽  
Author(s):  
Liqiang QI ◽  
Xu WANG ◽  
Wen WANG ◽  
Jingxin LI ◽  
Yan HUANG
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Coal Combustion ◽  
Gas Flow ◽  
Active Component ◽  
Mercury Removal ◽  
Gas Flow Rate ◽  
Mercury Adsorption ◽  
Mass Proportion ◽  
Modified Fly Ash

Abstract Pyrite and fly ash have certain advantages in adsorption and mercury oxidation. The pyrite-modified fly ash (PY+AC-FA) mercury adsorbent was prepared by mixing pyrite (PY) with acid-modified fly ash (AC-FA), which has better mercury removal effect than AC-FA. The experimental results of mercury adsorption show: when the reaction temperature is 50°C, the best doping proportion of modified fly ash is 20wt%, the mass proportion of pyrite to acid modified fly ash is 4:1, and the flue gas flow rate is 1.0L/min, the adsorbent has the best performance, and the adsorption rate of mercury reaches 91.92%. BET, XRD, SEM, TG-DSG and XRF were used to characterize these adsorbents. And the mechanism of mercury removal of pyrite-modified fly ash adsorbent is inferred: Hg0 is first adsorbed on the surface of the adsorbent, and then oxidized to HgS by the active component FeS2 in pyrite-modified fly ash.

Coupling of bromide and on-line mechanical modified fly ash for mercury removal at a 1000 MW coal-fired power plant

Fuel ◽  
2019 ◽  
Vol 247 ◽  
pp. 179-186 ◽  
Author(s):  
Shumin Wang ◽  
Yongsheng Zhang ◽  
Yongzheng Gu ◽  
Jiawei Wang ◽  
Xuehai Yu ◽  
...  
Keyword(s):  
Fly Ash ◽  
Power Plant ◽  
Mercury Removal ◽  
On Line ◽  
Modified Fly Ash

Mercury removal from coal combustion flue gas by modified fly ash

2013 ◽  
Vol 25 (2) ◽  
pp. 393-398 ◽  
Author(s):  
Wenqing Xu ◽  
Hairui Wang ◽  
Tingyu Zhu ◽  
Junyan Kuang ◽  
Pengfei Jing
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Coal Combustion ◽  
Mercury Removal ◽  
Modified Fly Ash

Experimental Study on the Spray of Mercury Removal Performance of Flue Gas Desulfurization Wastewater

2013 ◽  
Vol 807-809 ◽  
pp. 1483-1488
Author(s):  
Si Wei Pan ◽  
Nian Tang ◽  
Jiang Jun Hu ◽  
Ji Fu Kuang ◽  
Min Qi ◽  
...  
Keyword(s):  
Experimental Study ◽  
Fly Ash ◽  
Flue Gas ◽  
Cost Savings ◽  
Chloride Ion ◽  
Elemental Mercury ◽  
Flue Gas Desulfurization ◽  
Mercury Removal ◽  
Modified Fly Ash ◽  
Desulfurization Wastewater

For coal-fired power plant boiler flue gas desulfurization wastewater’s actual spraying proposed combination bag house dust while mercury removal process. Experimental study of the coal-fired boiler flue gas spraying chlorine ions and other halogens desulfurization wastewater modified fly ash flue gas mercury performance. Studies showed that desulfurization wastewater fly ash on chloride ion enhanced oxidation of elemental mercury, with the increase in the amount sprayed desulfurization wastewater, flue gas mercury capacity increased. Desulfurization wastewater add another halogen element can promote flue gas mercury performance, the effect of iodine was the most significant, followed by bromine. The desulfurization wastewater as a modified liquid sprayed into the flue modified fly ash, fly ash can improve mercury removal performance, eliminate the need for desulfurization wastewater treatment, cost savings, achieve desulfurization wastewater recycling.

Effect of Mechanical–Chemical Modification Process on Mercury Removal of Bromine Modified Fly Ash

2020 ◽  
Vol 34 (8) ◽  
pp. 9829-9839
Author(s):  
Jiwei Hu ◽  
Xinze Geng ◽  
Yufeng Duan ◽  
Weimeng Zhao ◽  
Mingqing Zhu ◽  
...  
Keyword(s):  
Fly Ash ◽  
Chemical Modification ◽  
Mercury Removal ◽  
Modification Process ◽  
Modified Fly Ash

Mechanism study of mechanochemical bromination on fly ash mercury removal adsorbent

Chemosphere ◽  
2021 ◽  
Vol 274 ◽  
pp. 129637
Author(s):  
Xinze Geng ◽  
Yufeng Duan ◽  
Shilin Zhao ◽  
Jiwei Hu ◽  
Weimeng Zhao
Keyword(s):  
Fly Ash ◽  
Mercury Removal ◽  
Mechanism Study
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