Combustion reformer for fuel cell power system or hydrogen production machine

Abstract

The invention relates to a combustion reformer for a fuel cell power system or a hydrogen production machine. The combustion reformer comprises a waste heat recovery device and a combustion reformer reactor that are connected with each other, a middle separation board in the waste heat recovery device separates the interior of the waste heat recovery device into a first heat transfer area and a second heat transfer area, the combustion reformer reactor comprises a third heat transfer coil pipe, a catalysis combustion cavity, a reformer reaction inner cavity, a reformer reaction outer cavity and a combustion smoke cavity that are sheathed in sequence from inside to outside, the third heat transfer coil pipe is communicated with the reformer reaction inner cavity, the reformer reaction innercavity is communicated with the reformer reaction outer cavity, the first heat transfer area is communicated with the reformer reaction outer cavity through an external connection tube so as to enable reformer exhaust to provide first level of preheat for the first heat transfer area, the catalysis combustion cavity is communicated with the combustion smoke cavity, and the second heat transfer area is communicated with the combustion smoke cavity through an external connection tube so as to enable combustion exhaust to provide second level of preheat for the second heat transfer area. The combustion reformer has a compact structure, has high heat utilization ratio and reforming efficiency, and is started more quickly.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a combustion reformer which uses methanol water as fuel and is applied to a fuel cell power generation system or a hydrogen generator. Background technique [0002] Affected by natural disasters, relying solely on centralized power systems cannot ensure the continuous and stable operation of important equipment. In addition to affecting daily life, it is more likely to endanger the safety of life and property. Batteries cannot be used as backup power for long-term power supply, and battery recycling and environmental pollution problems are still difficult to solve. In remote areas and islands that cannot be reached by power infrastructure, diesel power generation is still the main source of power, but it is noisy, serious pollution, high maintenance frequency, and low power supply flexibility. Renewable energy power generation technologies such as solar energy and wind power ...

AI Technical Summary

Problems solved by technology

However, hydrogen is a flammable and explosive substance, it is extremely difficult to liquefy and compress, and it is difficult to store and transport

[0004] But the problem is that the working temperature of the recombiner is high, and the reaction needs to absorb a lot of heat. Usually, the recombiner is heated up to the working temperature by using secondary batteries or electric heating from the mains, so that the recombiner starts to work, but this method It takes extra power to start the recombiner, and there is also the problem of a long start-up time, so now there are also chemical combustion methods to replace the traditional use of electricity to generate heat. For example, methanol and air are generally used to burn heat to release heat. On the one hand, it can reduce Power loss, on the other hand, can shorten the start-up time. However, using the heat energy released by chemical combustion to start the recombiner requires high equipment requirements. The general equipment structure is complex and the heat utilization rate is low.

As disclosed in Japanese Laid-Open Patent No. 2004-31280, a device that uses a burner to continuously heat the fuel reformer and the shift reactor, when the burner that heats the fuel reformer is used to heat the shift reactor, the shift reactor and the burner Separate positioning, it takes a long time to raise the temperature of the shift reactor to the working temperature, the structure is complex, and the thermal efficiency is low

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