Optimization of hydrogen production by filtration combustion of natural gas by water addition

Syngas production from residual biomass of forestry and cereal plantations using hybrid filtration combustion

“…In inert filtration combustion, it is reported that CO 2 concentration for F ¼ 1.4 decreased as steam presence and filtration velocity augmented [28], which is also observed in the results for hybrid filtration combustion, in spite of insignis pine results. As steam is increased from the base line to 40%, CO 2 presence decreases.…”

“…5 includes the temperature profile recorded for shining gum (20% steam) for representative purposes, since every test show the same behavior; in this temperature profile, the temperatures showed for time <~1400 s recorded the pre-heating done with a natural gaseair mixture of the inert zone before the steameair flow is fed. Reports of Araya et al [28] showed that for inert filtration combustion of methane and steam, using F ¼ 1.4, an increase on steam presence on the reactants that entails an increase in filtration velocity lead to a decrease in the temperature; the same behavior using carbon is shown by Salgansky et al [18] that increased steam presence in the reactants to report a decrease in the combustion temperature, so similar results are expected owing to the endothermic reactions that involve steam decomposition.…”

“…A temperature data error of 50 K is estimated, mainly radial for practical purposes. Samples of combustion products were taken at the top of the reactor using a tube inserted 30 mm in the porous medium (inert zone 1), extracting gas products into a carrying bag to analyze the presence of hydrogen (H 2 ), carbon monoxide (CO), methane (CH 4 ) and carbon dioxide (CO 2 ), using a Perkin Elmer Gas Chromatograph with the same detection method and equipment described in the work of Araya et al [28]. The experimental sampling error was estimated at 10%.…”

Temperature dependent transition point of purity versus flux for gas separation in Fe/Co-silica membranes

“…For instance, hydrogen is generally produced via high temperature processes such as natural gas reforming [2][3][4], where the syngas must be cooled down to meet specification properties of conventional gas separation technologies such as pressure swing adsorption. In view of their high temperature operation, silica derived membranes have been extensively reported in the open literature [5][6][7].…”

Influence of Chemical Kinetics on Predictions of Performance of Syngas Production From Fuel-Rich Combustion of CO2/CH4 Mixture in a Two-Layer Burner

“…It was shown that the maximum hydrogen yield was close to 50% and CO yield was close to 80%. To increase the syngas production, two methods were conducted, namely, adding stream during filtration combustion (Araya et al, 2014), or providing external heat source to the burner system (Zheng et al, 2012a). Experimental and numerical results by Araya et al (2014) showed that hydrogen yield increases with increasing steam content in methane-air mixture.…”