Hydrogen production in a reversible flow filtration combustion reactor

Abstract

536.46The noncatalytic process of syngas production by means of partial oxidation of methane by air oxygen in a reversible flow filtration combustion reactor has been investigated experimentally. We have investigated the influence of the equivalent ratio and the specific mass flow of the fuel mixture on the composition of conversion products and the maximum temperature in the reaction zone. The optimal conditions for the process providing the most effective conversion of methane to syngas have been established. The concentration of hydrogen is maximal for the equivalent ratio γ = 2.8 and the specific flow rate g = 1.8 kg ⁄ (m 2 ⋅s).

Conversion of methane to hydrogen in a reversible flow superadiabatic inert porous medium reactor

“…In technical devices, it is necessary to localize the process, which can be done by changing periodically the direction of gas filtration. Such devices, called reciprocating flow reactors, were investigated in [13][14][15][16] for burning low-calorie mixtures, and in [15,17,18] for rich mixtures. Large bodies of experimental data on the concentrations of conversion products depending on two basic parameters of the process -Φ and g -have been obtained.…”

“…The measurement data obtained in a reciprocating flow reactor were processed. The experimental facility and procedure are described in [18]. The pressure (absolute) in the reactor was P 2 bar, the porous medium diameter D = 0.03 m, its length L = 0.32 m, and the diameter of packed bed grains was equal to 3-5⋅10 −3 m. Calculations were made by the data of 76 experiments some of whose results are given in the Table 1.…”

“…It is seen that the disagreements have markedly Conclusions. Using the analysis of the results of experiments of [18] as the example, it has been shown that the chemical processes in the inert packed bed of a reciprocating flow reactor can be modeled with good accuracy with the use of the standard kinetic scheme for homogeneous processes (in our case [10]). Good agreement between calculated and experimental data was obtained by describing the gas flow in the combustion region by two parameters, T g and Θ s .…”

“…Judging from the results of the analysis of the data given in [18] by the proposed model, it may be supposed with high probability that in the determination of Φ of the reaction mixture fed into the reactor a methodological error is present. According to our estimate, the Φ values given in [18] should be multiplied by ζ av , which will also require correcting the coefficients of the degree of conversion of methane to hydrogen.…”

“…According to our estimate, the Φ values given in [18] should be multiplied by ζ av , which will also require correcting the coefficients of the degree of conversion of methane to hydrogen.…”