Oxidative hollow fiber membrane reactors

Wang, h., Tablet, C., Schiestel, T., Werth, S. and Caro, J. (2006) Partial oxidation of methane to syngas in perovskite hollow fiber membrane reactor. Catalysis Communications, 7, 907-912. 

So far, there are only a few reports of perovskite hollow fiber membrane reactors in the oxidative coupling of methane. Tan and Li studied the catalytic perovskite Lao.6Sro.4Coo.2Feo.8G3 (LSCF) hollow fiber membrane as... 

Wang H,Tablet C, SchiestelT and Caro J (2006b), Hollow fiber membrane reactors for the oxidative activation of ethane , Catal Today, 118,98-103. 

Jiang, H. Q., Wang, H. H., Werth, V., Schiestel, T., Caro, J. (2(X)8). Simultaneous production of hydrogen and synthesis gas by combining water spHtting with partial oxidation of methane in a hollow-fiber membrane reactor. Angewandte Chemie, Intematiorwl Edition, 47(48), 9341-9344. 

Oxidative coupling of methane in a BCFZ perovskite hollow fiber membrane reactor. Ind. Eng. Chem. Res., 49,... 

Jiang, H., Wang, H., Werth, S., et al. (2008). Simultaneous Production of Hydrogen and Synthesis Gas by Combining Water Splitting with Partial Oxidation of Methane in a Hollow-Fiber Membrane Reactor, Angew. Chem. Int. Edit., 47, pp. 9341-9344. 

Tan X, Pang Z, Gu Z and Liu S (2007), Catalytic perovskite hollow fiber membrane reactors for methane oxidative couphng ,/Memhr Sci,Wl, 109-114. 

We have developed a one-dimensional non-isothermal model for the countercurrent WGS membrane reactor with a C02-selective membrane in the hollow-fiber configuration using air as the sweep gas. Figure 1 shows the schematic of each hollow-fiber membrane with catalyst particles in the reactor. The modeling study of the membrane reactor is based on (1) the CO2 / H2 selectivity and CO2 permeance reported by Ho [1, 2] and (2) low-temperature WGS reaction kinetics for the commercial catalyst copper oxide, zinc oxide, aluminum oxide (CuO/ZnO/ AI2O3) reported by Moe [3] and others [4]. In this modeling study, the model that we have developed has taken into account critical system parameters including temperature, pressure, feed gas flow rate, sweep gas (air) flow rate, CO2 permeance, CO2 /H2 selectivity, CO concentration, CO conversion, H2 purity, H2 recovery, CO2 concentration, membrane area, water (H20)/C0 ratio, and reaction equilibrium. 

Kumar, A., Ergas, S. I, Yuan, X.,Fitch, M., Min, K. -N., Dewulf, J. and van Langenhove, H. 2010a. Modeling of a hollow fiber membrane biofilm reactor for nitric oxide removal model development and experimental validation./oarnaZ of Chemical Technology and Biotechnology, 85,423-428. 

Nerenberg, R. and Rittmann, B. E. 2004. Hydrogen-based, hollow-fiber membrane biofilm reactor for reduction of perchlorate and other oxidized contaminants. Water Science and Technology, 49,223-230. 

Caro, J., Caspary, K., Hamel, C., etal. (2007). Catalytic Membrane Reactors for Partial Oxidation Using Perovskite Hollow Fiber Membranes and for Partial Hydrogenation Using a Catalytic Membrane Contactor, Ind. Eng. Chem. Res., 46, pp. 2286-2294. 

A schematic diagram of a typical hollow fiber dense membrane reactor is shown in Figure 37.5a. The hollow fibers (Figure 37.5b) are manufactured by a phase inversion process (OD = l.1-1.5 mm ID = 0.75-1 mm) [63,64]. The oxidant gas (O2, H2O, CO2, N2O) mixture is fed to the core side, while a fuel (CH4, CO, or H2) mixture is fed to the shell side. A catalyst can be packed on the shell side. Both exit hnes are continuously monitored by onhne gas chromatography or mass spectrometry. 

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