Introduction to the structure and principle of microchannel reactor
At present, the following three methods are generally used to convert gasoline and other liquid hydrocarbon fuels into H2-rich mixed gas: (1) partial oxidation reaction; (2) autothermal reforming reaction; (3) steam reforming reaction.
With the use of micro-channel structure, the heat transfer limitation of the steam rice cabinet hindering the steam reforming reaction is eliminated by the fast dynamic process in the micro-channel, so that the three advantages of the steam reforming reaction can be used in the micro-channel fuel conversion device To be reflected, namely:
(1) Since it is not diluted by N2, the H2 content in the steam reforming product is high;
(2) The liquid fuel and water are compressed by the pump, and the high pressure required for reforming can be obtained directly, so that it is not necessary to rely on compressed air to increase the reaction pressure;
(3) The steam reforming method can provide heat for the reforming by burning the remaining H2 in the anode exhaust of the fuel cell, thereby effectively using energy, while the POX method or the ATR method is a thermally neutral or exothermic reaction and cannot use the anode exhaust gas.
Microchannel water gas shift reactor: Lubricant Merchants Microchannel water gas shift reactor uses Ru / Ni as a catalyst to convert CO in H2 to CO2, namely: H2O + COH2 + CO2-41.1kJ / mol; due to microchannel water coal The reactor conversion reactor greatly reduces the resistance to heat and mass transfer. A fast intrinsic reaction power is observed. Under this reaction mechanism, the reaction substance and the catalyst only contact for 25ms (usually a few seconds) to reduce 99.8% of the CO. Transformation. Therefore, the volume of the water-gas converter system using micro channels can be reduced by one to two orders of magnitude compared to the conventional volume, making it suitable for use on vehicles.
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