Self-heating type methanol reforming hydrogen production device based on fractal structure and control method thereof

Abstract

The invention discloses a self-heating type methanol reforming hydrogen production device based on a fractal structure and a control method of the self-heating type methanol reforming hydrogen production device. The self-heating type methanol reforming hydrogen production device comprises a shell, a methanol reformer, a methanol solution blending tank, a methanol fuel tank, a water tank and a fuel bubbler. The methanol reformer is connected with the methanol fuel tank through the fuel bubbler, the methanol reformer is respectively connected with the methanol solution blending tank and the water tank, and the methanol solution blending tank is respectively connected with the methanol fuel tank and the water tank. The methanol reformer comprises a reformer shell, a methanol catalytic combustion unit, a methanol steam reforming unit and a condensing unit; the control method comprises the steps of system debugging, working condition parameter determination, preheating starting, methanol solution preparation, hydrogen production operation, reaction water recovery, hydrogen production working condition switching, shutdown, control system improvement and the like. The self-heating methanol reformer has the beneficial effects that the self-heating methanol reformer is designed on the basis of a fractal network structure, and the heat and mass transport characteristic of the self-heating methanol reformer can be well suitable for volume increasing reactions such as methanol reforming.

Description

technical field [0001] The invention relates to a methanol reforming hydrogen production device and a control method thereof, in particular to a fractal structure-based autothermal methanol reforming hydrogen production device and a control method, belonging to the technical field of fuel cells. Background technique [0002] Energy is the driving force and lifeline of the national economy. Energy development and rational and effective utilization are the source of the development of the whole society. At present, the world's political and economic structure has undergone profound adjustments, and the relationship between energy supply and demand has undergone profound changes. Energy and resources are becoming increasingly tense, ecological and environmental problems are becoming more and more prominent, and the pressure to adjust the economic structure, improve energy efficiency, and ensure energy security is further increasing, and energy development is facing a series of...

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Problems solved by technology

[0004] The hydrogen production temperature of methanol reforming is about 220-300°C. In the prior art, electric heating is mostly used as the reaction heat source, resulting in a large amount of energy loss and too long start-up time; in addition, self-heating methods such as partial oxidation Heating by means of heating, thermal coupling, etc., the start-up speed is very impressive, but due to the limitation of heat and mass transfer in traditional flow channels such as straight flow channels and serpentine flow channels, the energy loss of this method is still relatively large; at the same time, the traditional manufacturing The hydrogen plant needs to manually prepare methanol aqueous solution and supply it to the methanol reforming hydrogen production plant, resulting in waste of manpower and redundant processes, which is not conducive to further promotion

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