Novel chemical hydrogen production reactor

Abstract

The invention belongs to the technical field of fuel cells, and specifically relates to a novel chemical hydrogen production reactor. The novel chemical hydrogen production reactor comprises two end plates and a catalytic assembly arranged between the two end plates, wherein a reaction space is arranged through flow channels formed in the end plates and a catalytic layer located between the flow channels; the flow channels can evenly disperse a flowing-in hydrogen production solution, so regional reaction difference is reduced; the catalyst layer is of a net-shaped structure and has a large specific surface area; reaction liquid can make full contact with the catalyst through the design of the flow channels, the utilization rate of the catalyst is remarkably increased, and the mass transfer resistance is also reduced through the net-shaped structure; and because the reaction space is small, the hydrogen can be quickly discharged by utilizing the characteristic of light weight of the hydrogen and an air outlet above a liquid inlet pressure flow channel. Compared with a traditional canning structure, the novel chemical hydrogen production reactor of the invention has the advantages of small size, simple structure, convenient installation and the like, continuous catalytic hydrogen production can be conducted on a sodium borohydride solution or other solution type hydrogen production agents, and reaction is rapid and efficient.

Description

Technical field [0001] The invention belongs to the technical field of fuel cells, and specifically relates to a new type of chemical hydrogen production reactor. Background technique [0002] The fuel cell is a chemical device that directly converts the chemical energy of the fuel into electrical energy. It is also called an electrochemical generator. It is not restricted by the Carnot cycle, so it has high energy conversion efficiency, no noise, no pollution, and very Good development prospects. As an energy conversion output source, a fuel cell needs a hydrogen supply system to provide a stable and reliable hydrogen supply for its power generation. At present, in view of the difficulty of using hydrogen in the field of fuel cells, there are various hydrogen supply solutions, such as hydrogen storage in hydrogen cylinders and hydrogen storage materials. , Methanol reforming hydrogen production, chemical hydrogen production (mainly sodium borohydride hydrogen production), etc. ...

AI Technical Summary

Problems solved by technology

[0004] When producing hydrogen, the reaction raw materials and catalyst are transported to the reaction tank separately, and hydrogen is generated after mixing. The hydrogen production rate is controlled by adjusting the feed rate or flow rate. When hydrogen is produced by this type of device, the utilization rate of the catalyst is low and the product separation is slow, resulting in an unstable reaction. , the hydrogen production rate is constantly changing, and there is a certain hysteresis in feed adjustment, it is difficult to achieve continuous and stable hydrogen production. In practical applications, the operation is complicated, the energy consumption is high, and it is inconvenient to transport and carry. , feeding method, raw material form and other aspects are optimized to improve the stability of the reaction, but the effect is limited, and it is difficult to meet the needs of fuel cell field hydrogen equipment

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