Equally Sized Mixed Flow Reactors in Series versus Plug Flow Reactor

2011 ◽  
Vol 84-85 ◽  
pp. 426-430 ◽  
Author(s):  
Shui E Yin

The SO2 and NOX from the coal-fired power station are the main gaseous pollutants in the air, which causes acid rain and photochemical smog. However, the two consequences are recognized as one of the most serious global environment problems and must be controlled. The electro-catalysts oxidation technology is capable of oxidized the NO which the wet flue gas desulfurization processes (WFGD) could not achieve this goal, the products from the electro-catalysts oxidation reactor entering the WFGD and to removal then removed simultaneously. In this work, a plug-flow reactors model is presented that can describe the conversion of NOx by the discharge treatment of the exhaust gases at low temperatures and at atmospheric pressure in dielectric barrier reactors. The model takes into account the behavior of a plug-flow reactor are simplified versions of the general relations for conservation of mass, energy, and momentum. The variation regularity of the generated nitrogen oxides, the main free radicals, and the rate of NO produce (ROP) were be analog by take the plug flow reactor (PFR) model of chemical reaction kinetics in the mixed flue gas of N2/NO/O2 , and trying to seek out the dominant reactions relation to production and consumption NO in the non-equilibrium plasma system. The results indicated that the dominant free radical is the O3 in the mixed flue gas of N2/NO/O2.


2021 ◽  
Vol 16 (11) ◽  
pp. 141-146
Author(s):  
K. Vasumathi ◽  
Raja Vadivu G. Nadana ◽  
E.M. Nithiya ◽  
K. Sundar ◽  
M. Premalatha

Photo bioreactions are employed for abating carbon dioxide emissions. The economics depends upon the choice of the type of the reactor. Photo bioreactions can be explained similarly to an autocatalytic reaction. A combined reactor mixed flow reactor followed by plug flow reactor could be the best choice. Using the data on cell concentration of Haematococcus pluvialis with respect to time in 2x concentration of Kobayashi’s basal medium available in the literature, it has been proved that the combined reactor could be the best choice. The optimum combination was also determined.


Author(s):  
Nesrin Ozalp ◽  
Vidyasagar Shilapuram ◽  
D. Jayakrishna

In this work, we present a thorough reaction engineering analysis on the modeling of a vortex-flow reactor to show that commonly practiced one-plug reactor approach is not sufficient to explain the flow behavior inside the reactor. Our study shows that N-plug flow reactors in series is the best approach in predicting the flow dynamics based on the computational fluid dynamics (CFD) simulations. We have studied the residence time distribution using CFD by two different methods. The residence time distribution characteristics are calculated by approximating the real reactor as N-ideal reactors in series, and then estimated the number of ideal reactors in series for the model. We have validated our CFD model by comparing the simulation results with experimental results. Finally, we have done a parametric study with a different sweeping gas to identify the best screening gas to avoid carbon deposition inside the vortex-flow reactor. Our results have shown that hydrogen is a better screening gas than argon.


Author(s):  
Sara Modarresi-Motlagh ◽  
Fatemeh Bahadori ◽  
Mohammad Ghadiri ◽  
Arash Afghan

2012 ◽  
Vol 110 ◽  
pp. 40-47 ◽  
Author(s):  
Pimjai Namsree ◽  
Worakrit Suvajittanont ◽  
Chureerat Puttanlek ◽  
Dudsadee Uttapap ◽  
Vilai Rungsardthong

2016 ◽  
Vol 13 (7) ◽  
pp. 720-729 ◽  
Author(s):  
Tho Dinh Son Van ◽  
Nghia Phan Trung ◽  
Vu Nguyen Anh ◽  
Huong Nguyen Lan ◽  
Anh To Kim

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