Simultaneous Desulfurization and Denitrification from Flue Gas Using Urea/Piperazine Solution

2014 ◽  
Vol 881-883 ◽  
pp. 641-644 ◽  
Author(s):  
Fang Wang ◽  
Ting Chen ◽  
Mei Jin ◽  
Ping Lu
Keyword(s):  
Flue Gas ◽  
Experimental Results ◽  
Urea Solution ◽  
Desulfurization Efficiency ◽  
Simultaneous Desulfurization And Denitrification

The simultaneous desulfurization and denitrification performance from the N2-SO2-NO simulated flue gas using the urea solution as the reduction absorbent and piperazine as the additive was investigated. The influences of the concentration of urea solution and the concentration of piperazine solution on the simultaneous desulfurization and denitrification behavior were also discussed. The experimental results showed that the addition of piperazine in the urea solution could enhance the denitrification performance, which could result the desulfurization efficiency of 94.07% and the denitrification efficiency of 85.11%.

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

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.

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

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.

scholarly journals Effect of Gas-Liquid Contact Intensification on Heat and Mass Transfer in Deflector and Rod Bank Desulfurization Spray Tower

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1269
Author(s):  
Yuzhen Jin ◽  
Weida Zhao ◽  
Zeqing Li
Keyword(s):  
Mass Transfer ◽  
Pressure Drop ◽  
Heat And Mass Transfer ◽  
Temperature Difference ◽  
Flue Gas ◽  
Flue Gas Desulfurization ◽  
Spray Tower ◽  
Porous Media Model ◽  
Desulfurization Efficiency ◽  
Optimization Mechanism

The deflector and the rod bank are commonly used to optimize flue gas distribution in the original spray tower (OST) of a wet flue gas desulfurization system (WFGD). In this paper, the internal optimization mechanism of the deflector desulfurization spray tower (DST) and the rod bank desulfurization spray tower (RBST) are studied. Based on the Euler–Lagrange method, the standard k-ε turbulence model, an SO2 absorption model and a porous media model, the numerical simulation of the desulfurization spray tower is carried out with the verification of the model rationality. The results show that there are gas-liquid contact intensification effects in DST and RBST. Compared with OST, gas-liquid contact intensification enhances the heat and mass transfer effects of DST and RBST. The temperature difference between inlet and outlet of flue gas increased by 3.3 K and the desulfurization efficiency of DST increased by 1.8%; the pressure drop decreased by 37 Pa. In RBST, the temperature difference between the flue gas inlet and outlet increased by 5.3 K and the desulfurization efficiency increased by 3.6%; the pressure drop increased by 33 Pa.

Simulation of Simultaneous Desulfurization and Denitrification of Flue Gas Using Pulsed Discharge Plasma

2011 ◽  
Vol 356-360 ◽  
pp. 1118-1121 ◽  
Author(s):  
Qi Zhou ◽  
Qi Yu ◽  
Ling Wei Li ◽  
Wen Xi Yu ◽  
Gang Yu
Keyword(s):  
Water Vapor ◽  
Residence Time ◽  
Flue Gas ◽  
Discharge Plasma ◽  
Removal Rate ◽  
Concentration Curve ◽  
Pulsed Discharge ◽  
No Removal ◽  
Simultaneous Desulfurization And Denitrification ◽  
Pulsed Discharge Plasma

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.

Experimental Study on Desulfurization Enhanced by Additive in Limestone-Gypsum FGD Process

2014 ◽  
Vol 675-677 ◽  
pp. 422-425
Author(s):  
Jun Xia Liu
Keyword(s):  
Flue Gas ◽  
Gas Flow ◽  
High Efficiency ◽  
Ph Value ◽  
Flue Gas Desulfurization ◽  
Gas Flow Rate ◽  
Lime Solution ◽  
Desulfurization Efficiency ◽  
Technical Features ◽  
Hexanedioic Acid

This Paper introduced the research background and technical features of the simulative experiments in the laboratory with the sorbent of lime solution without lime particles. By means of the effects of various influencing factors on SO2 removal efficiency were studied carefully. These parameters include gas flow rate (G), inlet SO2 concentration, liquid-to-gas ratios, the height of the packing and the additive, at the same time menstruating the pH value of the liquid flowing from the tower. To improve desulfurization efficiency of limestone in the wet flue gas desulfurization (WFGD), effect of the hexanedioic acid additive on limestone desulfurization agent were studied. The result shows that this system has advantages of high efficiency, stable, low investment and low circulating cost. The result could give a reference to optimization and will be helpful in selecting desulfurization techniques.

scholarly journals Research on selectivity removing SO2 from flue gas with a novel absorbent

2006 ◽  
Vol 2 (2) ◽  
pp. 110-119
Author(s):  
Wanren Chen ◽  
Hua Li ◽  
Xiaoshuang Chen
Keyword(s):  
Organic Solvent ◽  
Flue Gas ◽  
Industrial Application ◽  
Absorption Efficiency ◽  
Laboratory Research ◽  
The Novel ◽  
Traditional Methods ◽  
Solvent Absorption ◽  
Desulfurization Efficiency ◽  
So2 Absorption

Compared with the traditional methods of removal SO2 from flue gas, the organic solvent absorption has some advantages as low investment, high SO2 absorption efficiency and desorption efficiency. For the industrial application of organic solvent absorption as soon as possible, some laboratory research on selectively removing SO2 and NOx from flue gas in the presence of CO2 and an enlarged experiment has been done with a novel absorbent of Mn(II)+ DMSO. The effect on desulfurization selectivity for absorbents is studied. And the regeneration capacities for absorbent are researched. The result shows that the novel absorbent has not only strong desulfurization efficiency, but also good selectivity for SO2 and CO2, the feasibility of desulfurization absorbent has been proved.

Sign in / Sign up

Export Citation Format

Share Document