Enhancement of pure hydrogen production through the use of a membrane reactor

Mathematical Modeling of an Integrated Membrane Reactor for Methane Steam Reforming

“…14 shows the methane conversion as a function of pressure and dimensionless of the reactor: the used kinetic is suitable to describe the process. The pressure has a positive effect on dimensionless length and the trend is similar to works of Kyriakides et al [77], Patrascu and Sheintuch [44] and Castillo et al [78]. High value of methane conversion can be obtained with high pressure.…”

“…7. Higher pressures contribute to the transfer of hydrogen from the reaction zone to permeation zone; an ideal value of 4 is asymptotically reached with a pressure of 30 bar [77]. The positive effect of the pressure is less significant for values of pressures that are higher than 5 bar.…”

Catalyst development for steam reforming of methane and model biogas at low temperature

“…As a result the consumption of CO in the WGS would be enhanced and its concentration in the exit gas would be even lower. Experimental and modeling results in similar membrane reforming systems report a CO molar fraction of less than 0.02 in the effluent stream (dry basis) [9,10].…”

“…As a result, hydrogen is separated with high purity from the product stream in one step, and at the same time the equilibrium of the reforming reaction is shifted http to the product side [7,8]. Experimental and modeling studies in the proposed system have shown that obtained conversion can be shifted to the value of 80-90% [9,10]. However, the use of a Pd-based membrane increases the total cost of the process.…”

Otimização da produção de hidrogênio utilizando o algoritmo genético

“…Atualmente, a principal rota industrial de produção de hidrogênio é a reforma a vapor do metano, isto se deve às vantagens econômicas que este processo apresenta em relação a outros processos de produção de hidrogênio. Além disso, as grandes reservas de gás natural disponíveis no mundo tornam este processo de reforma uma solução promissora e economicamente viável para produção de hidrogênio e gás de síntese [2].…”