Miniaturized methanol self-heating reforming hydrogen making integrated apparatus and hydrogen production method

Abstract

The invention relates to a miniaturized hydrogen production integrated device through methanol autothermal reforming and a hydrogen production method. The hydrogen source technology is characterized by integrating main reaction units such as the methanol autothermal reforming and CO selective oxidation (PROX), and only using two stages of the CO selective oxidation without the prior CO water-gas conversion unit; and the hydrogen source integrated system comprises a group of methanol autothermal reforming / heat exchange modules, a group of catalytic combustion / vapourization modules, and two groups of CO selective oxidation / heat exchange modules, wherein the four groups of modules all adopt a welding integration method of an integral catalytic reactor and a microchannel heat exchanger. The device and the method can obtain 1 kW class reformed gas (dry gas) of which CO concentration is less than 30 ppm and H2 concentration is more than 53 percent. The invention is particularly suitable for fuel cell hydrogen source systems in the range of between 100W and 100kW.

Description

technical field [0001] The present invention relates to methanol autothermal reforming hydrogen production, specifically a miniaturized methanol autothermal reforming hydrogen production integrated device and hydrogen production method, which is a kind of hydrogen production without CO water-gas shift and only uses two-stage CO Selectively oxidized methanol autothermal reforming miniaturized hydrogen production technology and integrated system. H in dry gas after selective oxidation of reformed gas 2 The concentration is greater than 53%, and the CO concentration is less than 30ppm. The invention is particularly suitable for fuel cell hydrogen sources in the range of 100W-100kW, and belongs to the technical field of hydrogen energy chemical industry and equipment miniaturization. Background technique [0002] Due to its high energy conversion efficiency and environmental friendliness, fuel cells are the best candidate power sources for future electric vehicles and distribu...

AI Technical Summary

Problems solved by technology

However, the CO water-vapor shift catalyst suitable for small-scale on-site hydrogen production systems is still immature, and the reaction process is controlled by thermodynamic equilibrium and the reaction rate is low, resulting in the volume of the shift subsystem accounting for more than 1 / 3 of the total reaction system.

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