Simultaneous desulfurization and denitrification from flue gas by catalytic ozonation combined with NH3/(NH4)2S2O8 absorption: Mechanisms and recovery of compound fertilizer

Desulfurization and Denitrification processes in two pulsed discharge plasma systems (NO/SO2/N2/O2/H2O and NO/SOSubscript text2/NSubscript text2/OSubscript text2) were simulated respectively, and then the removal characteristics of these two gas systems were analyzed. The results show that NO can be completely removed when the residence time is close to 1.3 s and SOSubscript text2 removal rate is 61.5% when the residence time reaches 3 s in a system containing water vapor (HSubscript text2O). When the system does not contain water vapor, NO removal rate is still much high, but SOSubscript text2 removal rate is approximately zero. When OSubscript text2 concentration is increased, NO removal velocity will be faster and the peak of the concentration curve of NOSubscript text2 will be higher. NO removing velocity is much faster in a system containing water vapor than that in a system without water vapor when both systems have almost the same OSubscript text2 concentration.

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Simultaneous Desulfurization and Denitrification by Combined Ozone Oxidation and Alkaline Wastewater: A Case Study

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1010-1012.862 ◽

2014 ◽

Vol 1010-1012 ◽

pp. 862-871

Author(s):

Hua Yin ◽

Hua Fang Guo ◽

Xue Qing Xu ◽

Yuan Ge Qian

Keyword(s):

Flue Gas ◽

Demonstration Project ◽

Experimental Results ◽

Flue Gas Desulfurization ◽

Ozone Oxidation ◽

Outlet Concentration ◽

Design Requirements ◽

Simultaneous Desulfurization And Denitrification

In this paper, we mainly introduced demonstration project of flue gas desulfurization and denitrification achieved by ozone oxidation and alkali wastewater. The System showed high automatization, which performed good adaptability and load tracking capacity on the concentration of SO2, NOXand variation of flue gas. Meanwhile, outlet concentration of the SO2and NOXcould meet the design requirements. The experimental results showed that the overall economy of designed process had certain advantages compared with conventional desulfurization and denitrification technologies.

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Study on method and mechanism for simultaneous desulfurization and denitrification of flue gas based on the TiO2 photocatalysis

Science in China Series E ◽

10.1007/s11431-008-0021-0 ◽

2008 ◽

Vol 51 (3) ◽

pp. 268-276 ◽

Cited By ~ 21

Author(s):

Yi Zhao ◽

Li Zhao ◽

Jing Han ◽

YongYi Xu ◽

ShuQin Wang

Keyword(s):

Flue Gas ◽

Tio2 Photocatalysis ◽

Simultaneous Desulfurization And Denitrification

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Experimental Research of Flue Gas Simultaneous Desulfurization and Denitrification with the New Gas-Liquid Medium

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.955-959.1998 ◽

2014 ◽

Vol 955-959 ◽

pp. 1998-2002

Author(s):

Yan Yang ◽

Wei Wei Ni ◽

Hao Lv ◽

Ding Long Li ◽

Wei Qiang Wang ◽

...

Keyword(s):

Air Pollution ◽

Liquid Medium ◽

Experimental Research ◽

Flue Gas ◽

Operating Parameters ◽

Inlet Temperature ◽

Inlet Concentration ◽

Biological Technology ◽

Desulfurization Efficiency ◽

Simultaneous Desulfurization And Denitrification

The flue gas simultaneous desulfurization and denitrification was studied for its feasibility with the new gas-liquid medium by using Ca(OH)2 as absorbent. The effects on key operating parameters were analyzed. They are pH, inlet temperature of flue gas and inlet concentration of air pollution. When pH is almost 5.5-6, and inlet temperature of flue gas is between 110℃ and 120℃, the results show that the removal efficiency of SO2 and NO are above 85% and 80% using rotating biological technology (RDB), respectively, which can satisfy most requirements of industrial scale applications. Besides, When CSO2 is more than 1500 (mg/m3), with the rising of imported pollutant concentration, desulfurization efficiency continues to increasing and denitrification efficiency was growing slowly.

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