A kind of fuel pretreatment device and fuel cell system

A fuel and material technology, which is applied in the field of fuel pretreatment devices and fuel cell systems, can solve problems such as overheating or undercooling, uneven temperature distribution, and carrier damage to the conversion rate of reactants.

Active Publication Date: 2022-07-01
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the reaction proceeds, the concentration of reactants between the inlet and outlet changes, and the reaction intensity changes. In the conventional fuel pretreatment device, an uneven temperature distribution is easily formed in the catalyst area, resulting in local overheating or overcooling, resulting in catalyst sintering, carrier Problems such as damage and low conversion rate of reactants limit the long-term stable operation of fuel pretreatment devices

Method used

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  • A kind of fuel pretreatment device and fuel cell system
  • A kind of fuel pretreatment device and fuel cell system
  • A kind of fuel pretreatment device and fuel cell system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] like figure 1 As shown, in this embodiment, the fuel pretreatment device 100 includes a reaction chamber 101 and an insulating layer 102, the reaction chamber 101 is an integrated reactor, and the insulating layer 102 covers the reaction chamber 101 and is completely or large The reaction chamber 101 is partially covered. The endothermic and exothermic fuel pretreatment reactions are simultaneously performed in the reaction chamber 101, and both generate hydrogen-rich fuel required for downstream power generation. The fuel pretreatment reactions are but are not limited to endothermic ammonia decomposition reactions and exothermic alkanes. The partial oxidation reforming reaction is a self-sustaining composite reaction of heat mixing, which is thermally neutral or slightly exothermic.

[0097] like figure 2 As shown, the reaction chamber 101 and the thermal insulation layer 102 can be designed in the form of concentric cylinders. Further introduction will be given be...

Embodiment 2

[0104] like image 3 As shown, the same as the first embodiment, the fuel pretreatment device 200 also includes a reaction chamber 201 and an insulating layer 202 , the reaction chamber 201 is an integrated reactor, and the insulating layer 202 covers the outside of the reaction chamber 201 , and completely or mostly cover the reaction chamber 201 . The difference is that the reaction chamber 201 includes a first sub-chamber and a second sub-chamber, the second sub-chamber is sleeved outside the first sub-chamber, and between the first sub-chamber and the second sub-chamber Set isolated from each other. The first sub-cavity is used for inputting the material to be reacted for exothermic reaction or the material to be reacted for endothermic reaction, and the second sub-cavity is used for inputting the material to be reacted for endothermic reaction or the material to be reacted for exothermic reaction.

[0105] The number of the first sub-cavity and the second sub-cavity is ...

Embodiment 3

[0118] refer to Figure 8 and Figure 9, the fuel pretreatment device 300 provided in this embodiment is similar in structure to the second embodiment. The fuel pretreatment device 300 also includes a reaction chamber 301 and a thermal insulation layer 302. The reaction chamber 301 is an integrated reactor, and the thermal insulation The layer 302 covers the outside of the reaction chamber 301 and completely or mostly covers the reactor, wherein the inner region starts from the material inlet 301-1 of the inner reaction chamber, and the ammonia gas in the material to be reacted input from the outside flows into this device, and then flows downward into the cylindrical inner reaction chamber inlet area 301-2 directly communicating with the inner reaction chamber material inlet 301-1, and reacts there. The inner reaction chamber mainly includes two sections: the inner reaction chamber material distribution zone 301-3 near the inlet side and the inner catalytic reaction zone 301...

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Abstract

The invention discloses a fuel pretreatment device and a fuel cell system. The fuel pretreatment device comprises: a reaction cavity; In the cavity; the reaction catalyzing member used for catalyzing the reaction of the material to be reacted after being homogenized by the homogenizing and distributing member, and the reaction catalyzing member is filled in the reaction cavity. In the present invention, the materials to be reacted are uniformly distributed by the homogenizing and distributing parts, and then input into the reaction catalyst parts for catalytic reaction after homogenization, so as to avoid the partial temperature distribution caused by the uneven temperature distribution caused by the uneven distribution of the materials to be reacted in the reaction catalyst parts. Overheating or undercooling will further cause problems such as catalyst sintering, carrier damage and low conversion rate of reactants, and the present invention improves the stability of the fuel pretreatment device.

Description

technical field [0001] The present invention relates to the technical field of fuel pretreatment, in particular to a fuel pretreatment device and a fuel cell system. Background technique [0002] With the widespread use of unmanned vehicles such as unmanned aerial vehicles, surface / underwater unmanned vehicles, and ground operation robots, vehicle-mounted auxiliary power systems and portable energy supply equipment, compact and lightweight power supplies have achieved good development. prospect. At the same time, the diversification of application functions and the complexity of usage scenarios require the above-mentioned devices to have longer battery life and higher requirements for power supply sources. Power storage batteries represented by lithium batteries are currently the most commonly used power supply sources. Due to the small energy storage density of batteries (usually less than 500Wh / kg), in order to meet the needs of long-term continuous operation, it is often...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0612
CPCH01M8/0618H01M8/0606H01M8/0656Y02E60/50
Inventor 史翊翔史继鑫范峻华蔡宁生
Owner TSINGHUA UNIV
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