Fuel pretreatment device and fuel cell system

A fuel and material technology, applied in the field of fuel pretreatment devices and fuel cell systems, can solve problems such as overheating or undercooling, carrier destruction of reactant conversion rate, catalyst sintering, etc.

Active Publication Date: 2022-04-26
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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  • Fuel pretreatment device and fuel cell system
  • Fuel pretreatment device and fuel cell system
  • Fuel pretreatment device and fuel cell system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Such as figure 1 As shown, in this embodiment, the fuel pretreatment device 100 includes a reaction chamber 101 and an insulation layer 102. The reaction chamber 101 is an integrated reactor, and the insulation layer 102 is coated on the outside of the reaction chamber 101, and is completely or large The reaction cavity 101 is partially covered. The endothermic and exothermic fuel pretreatment reactions are carried out synchronously in the reaction chamber 101, and both generate hydrogen-rich fuel required for downstream power generation. The fuel pretreatment reactions are but not limited to endothermic ammonia decomposition reactions and exothermic alkanes The thermal self-sustaining composite reaction of partial oxidation reforming reaction mixture has the characteristics of thermoneutral or slightly exothermic.

[0097] Such as figure 2 As shown, the reaction chamber 101 and the insulation layer 102 can be designed in the form of concentric cylinders. Further de...

Embodiment 2

[0104] Such as 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 is coated on the outside of the reaction chamber 201 , and completely or mostly cover the reaction cavity 201 . The difference is that the reaction chamber 201 includes a first sub-cavity and a second sub-cavity, the second sub-cavity is sleeved outside the first sub-cavity, and between the first sub-cavity and the second sub-cavity isolated from each other. The first sub-cavity is used for inputting the materials to be reacted for the exothermic reaction or the materials to be reacted for the endothermic reaction, and the second sub-cavity is used for inputting the materials to be reacted for the endothermic reaction or the materials to be reacted for the exothermic reaction.

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

Embodiment 3

[0118] refer to Figure 8 and Figure 9, the fuel pretreatment device 300 provided in this embodiment is similar to the structure in the second embodiment. The fuel pretreatment device 300 also includes a reaction chamber 301 and an insulating layer 302. The reaction chamber 301 is an integrated reactor, and the heat preservation The layer 302 covers the outside of the reaction chamber 301, and completely or mostly covers the reactor, wherein the inner area starts from the material inlet 301-1 of the inner reaction chamber, and the ammonia gas in the material to be reacted from the outside flows into it. device, and then flows down into the cylindrical inner reaction chamber inlet area 301-2 directly connected with the inner reaction chamber material inlet 301-1, and reacts there. The internal reaction chamber mainly includes two sections: the internal reaction chamber material distribution area 301-3 near the inlet side and the internal catalytic reaction area 301-4 near the...

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PUM

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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; the homogenizing and distributing part is used for homogenizing the to-be-reacted material entering the reaction cavity and is mounted in the reaction cavity; and the reaction catalysis part is used for catalyzing the reaction of the to-be-reacted materials homogenized by the homogenizing distribution part and is filled in the reaction cavity. According to the invention, the to-be-reacted material is homogenized and distributed through the homogenizing distribution part, and is input into the reaction catalysis part for catalytic reaction after being homogenized, so that local overheating or supercooling caused by non-uniform temperature distribution caused by non-uniform to-be-reacted material input into the reaction catalysis part is avoided; by means of the fuel pretreatment device, the stability of the fuel pretreatment device is improved.

Description

technical field [0001] The 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 aerial vehicles, and ground operation robots, vehicle-mounted auxiliary power systems, and portable energy supply equipment, compact and lightweight power supplies have a 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 a longer battery life, and also put forward higher requirements for power sources. The power storage battery represented by lithium battery is currently the most commonly used source of power supply, limited by the small energy storage density of the battery (usually less than 500Wh / kg), in order to meet the needs of long-term continuous operation,...

Claims

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Application Information

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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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