Jet stirred reactor

Monte Carlo PDF method for turbulent reacting flow in a jet-stirred reactor. 

C.B. Vaughn, W.H. Sun, J.B. Howard, and J.P. Longwell. Measurements and Modeling of Light Hydrocarbons in Rich C2H4 Combustion in a Jet-Stirred Reactor. Combust. Flame, 84 38-46,1991. 

An experimental apparatus that under certain conditions approximates closely a well-stirred reactor is a spherical chamber into which premixed reactants are injected centrally through a perforated tube and out of which the reaction products flow through a number of ports located at various positions in the outer shell. The mixing is driven by the fuel-injection jets that are formed at the tube perforations, and the apparatus has been called the jet-stirred reactor. The average residence time of an element of gas in the reactor is... 

The overall rate of consumption of fuel obtained in a well-stirred reactor differs from that of an ignition-delay experiment because the combustion rather than the ignition of the fuel is investigated. Overall rates of other processes, such as pollutant production, also have been obtained in experiments with jet-stirred reactors by measuring levels of the appropriate products in the outlet streams. Results of some experiments on jet-stirred reactors are consistent with the concept of the well-stirred reactor [6], [9] [17]. Some of the more recent work cited has endeavored to account for influences of imperfect mixing. Theoretical aspects of the well-stirred reactor have been presented in a recent book. ... 

CSTR = Continuously-stirred tank reactor, PER = Pressurized flow reactor, RCM = Rapid compression machine, JSR = Jet-stirred reactor, JSFR Jet-stirred flow reactor. 

Fig. 6.1. Variation in measured mole fraction of n-heptane as a function of vessel temperature. Jet-stirred reactor at 1 MPa over a range of fuel oxygen ratios () = 1 3.6 (0.3) ( ), 1 22 (0.5) ( ), 1 11 (1.0) (A) and 1 7.5 (1.5) ( ) at a mean residence time of 1.0s. Reactants diluted with excess N2 to maintain isothermal conditions. (After Dagaut et al.

Figure 4 shows the experimental data taken for hydrogen-air combustion. The solid squares are the result of a complete kinetic calculation (not assuming partial equilibration) (26), treating the jet-stirred reactor as a well stirred system and inputing measured reactor temperature or heat loss rates. The reaction scheme included the following ... 

Bartok et al. (12) examined the addition of a number of nitrogen compounds (induing NO, NO2, NH3, (CN)2, and CH3NH2) during methane-air combustion in a jet-stirred reactor. Under excess air conditions, essentially complete conversion (or retention) was observed however, the fraction of the additive which oxidized to NOa decreased sharply on the fuel-rich side. 

Roekaerts, D. (1989), Monte-Carlo composition PDF method for turbulent reactive flow in a jet stirred reactor, in Numerical Methods in Laminar and Turbulent Flows , Vol. 6, Part 2. 

DAGAUT P., CATHONNET M., ROUAN J.P., FOULATIER R., QUILGARS A., BOETTNER J.C., GAILLARD F., JAMES H., A jet-stirred reactor for kinetic studies of homogeneous gas-phase reactions at pressures up to ten atmospheres, J. Phys. E. Sci. Instrum., 19, 207 (1986). 

Roekaerts, D., Monte-Carlo PDF Method for Turbulent Reacting Flow in a Jet-Stirred Reactor, Computers Fluids, 21, 97-108 (1992). 

Benzaldehyde has been identified as a major oxidation product of pure toluene or alkane toluene mixtures in studies at temperature below 800 K in a static reactor between 723 and 788 in a jet stirred reactor between 580 and 620 and in a rapid compression machine at 750 The reaction sequence R1-R3-R4 is often suggested to explain the formation of benzaldehyde in the low-temperature oxidation mechanism of toluene. 

Glaude, P.A., Herbinet, O., Bax, S., Biet, J., Warth, V., Battin-Leclerc, F. Modeling of the oxidation of methyl esters-Validation for methyl hexanoate, methyl heptanoate, and methyl decanoate in a jet-stirred reactor. Combust. Flame 157, 2035-2050 (2010)... 

Fig. 5.25 Normalised estimates of first-order contributions to the overall variance of predicted butane mole fraction at 750 K calculated using first-order local sensitivities (grey) and the global HDMR method (black). Both are derived from a model describing the oxidation of n-butane in a jet stirred reactor (residence time of 6 s, atmospheric pressure, stoichiometric mixtures containing 4 % (mol) -butane diluted in helium). EXGAS notation is used. Adapted with permission from Cord et al. (2012). Copyright (2012) American Chemical Society...

Dayma G, Halter F, Poucher F, Togbe C, Mounaim-Rousselle C, Dagaut P. Experimental and detailed kinetic modeling study of ethyl pentanoate (ethyl valerate) oxidation in a jet stirred reactor and laminar burning velocities in a spherical combustion chamber. Energy Fuels. August 2012 26 4735-4748. 

Sarathy SM, Gail S, Syed SA, Thomson MJ, Dagaut P. A comparison ofsamrated and unsaturated C-4 fatty acid methyl esters in an opposed flow diffusion flame and a jet stirred reactor. Proc Combust Inst. 2007 31 1015-1022. 

Serinyel Z, Togbe C, Dayma G, Daguat P. An experimental and modeling study of 2-methyl-l-butanol oxidation in a jet-stirred reactor. Combust Flame. 2014 161 3003-3013. 

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