Hybrid filtration combustion of natural gas and coal

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

“…Experimental hybrid filtration combustion has been studied for syngas production using carbon [18], coal [19], wood pellets [20] and polyethylene [21] among other solid fuels and a mathematical model based on mass and energy equilibrium equations has been proposed [22,23]. Salgansky et al [19] studied and modeled [22] the filtration combustion of a steameair flow in a porous media composed on carbon and an inert solid material; temperature in the combustion wave and product composition are obtained varying the carbon fraction (from 10 to 100%) and steam (varying water/oxygen from 1 to 4.5) present in the oxidant. The maximum combustion wave temperature showed a slight dependence on the porous bed composition and steam presence.…”

“…An increase in steam presence in the oxidant lead to a rise in hydrogen concentration in the gaseous products and caused a decrease in carbon monoxide concentration. Coal experiments were done using a rich natural gaseair mixture and varying the porous bed composition from 0 to 75% of coal pellets; it was observed that hydrogen yields and flame temperatures increased by augmenting filtration velocity and that flame temperatures decreased with an increase of the coal fraction of the porous bed; maximum hydrogen conversion was achieved with 75% of coal content in the porous bed [19]. For wood pellets (50% alumina spheres, 50% wood pellets in volume), rich and ultrarich combustion of butane experiments, hydrogen and carbon monoxide are the dominant products and compared with the inert porous media partial oxidation of butane, a higher presence of syngas in the products is reported [20], showing that wood presence boosts syngas production.…”

Colloidal Transport in Locally Periodic Evolving Porous Media---An Upscaling Exercise

“…[5,46]. Yet another typical research field fitting well this problem setting is filtration combustion [41]. As one can expect after weighing the number of mathematical difficulties in handling simultaneously the multiscale (often stochastic) structure of the material, the motion of the many microscopic interfaces, the strong coupling and the involved nonlinearities in the physical and chemical process of the setting, there is not yet a consensus on how to approach the question of averaging reactive, actively evolving porous media.…”

Syngas Fuel Production from Carbonaceous Feedstocks Using Hybrid Porous Media

“…In this case, a reaction wave is produced by a flow that can contain hot air, H 2 O(g), or a gaseous fuel-air mixture that propagates along the reactor reforming the solid fuel inside within a wide-power-range, high-efficiency, high energy concentration per unit of volume and stable combustion over a wide range of equivalence ratios [23]. Several experimental studies on HFC for syngas and H 2 production have been conducted [24][25][26][27][28][29][30][31][32][33][34][35], showing that the technology presents a strong and feasible option for syngas production from gaseous and solid fuels in a batch configuration.…”