Liquid fuel catalytic reforming device

Abstract

The invention provides a liquid fuel catalytic reforming device, and relates to the technical field of hydrogen production devices. The liquid fuel catalytic reforming device comprises a shell body and a high-temperature hot pipe; a reaction cavity is formed in the shell body, the inner part of the reaction cavity comprises a catalytic reforming area, and the catalytic reforming area is used for filling a catalyst; a reaction cavity inlet and a reaction cavity outlet are correspondingly formed in the parts, located at the two ends of the catalytic reforming area, of the shell body; and the high-temperature hot pipe is configured to be capable of being assembled in the inner part of the catalytic reforming area to balance the temperature of the catalyst filled in the inner part of the catalytic reforming area in the direction of flowing from the reaction cavity inlet to the reaction cavity outlet of fluid. According to the liquid fuel catalytic reforming device, the technical problems of 'overheating' or 'supercooling' of a catalyst bed layer and large internal temperature gradient in the process of liquid fuel reforming in the prior art are at least alleviated.

Description

technical field [0001] The invention relates to the technical field of hydrogen production devices, in particular to a liquid fuel catalytic reforming device. Background technique [0002] Fuel cell is a new type of energy supply technology, which has the advantages of high efficiency, up to 60%, low noise, almost no pollution emission, etc. It is suitable for automobile power supply, portable power supply, distributed energy system, household combined heat and power supply It is a crucial technology in the "hydrogen economy" system. However, there are still bottlenecks in key technologies such as hydrogen production, storage and transportation, which limits the large-scale promotion of fuel cell technology and the development of mobile and miniaturized hydrogen production devices based on the reforming and conversion of liquid fuels such as gasoline and diesel. And technology is an important way to solve the above problems. [0003] Liquid fuels represented by gasoline an...

AI Technical Summary

Problems solved by technology

Steam reforming uses water vapor as the oxidant, which has the advantages of inhibiting carbon deposition and high hydrogen content, but the entire reaction process needs to absorb a lot of heat and requires additional heating devices, often with complex systems and large volumes; partial oxidation reforming uses insufficient chemical The equivalent ratio of oxygen or air is used as the oxidant, and the conversion process releases heat, which can achieve self-sustainment under high temperature conditions, but the risk of carbon deposition in the process is high and the hydrogen content is low; autothermal reforming uses part of water vapor and air as the oxidant, which has both The above two reforming methods have advantages in system efficiency, carbon deposition, reaction temperature, etc., but the control of operating parameters is relatively complicated, and there is also a certain risk of carbon deposition

[0004] Among the three liquid fuel reforming methods, there is generally "overheating" inside the catalyst bed, that is, the temperature in the area is too high, or "undercooling", that is, the temperature in the area is too low, and the temperature gradient inside the catalyst bed is large, up to 200 The problem of ℃ / cm, which often leads to problems such as catalyst sintering, surface carbon, and support cracking, affects the catalytic performance and long-term service life of the catalyst, and severely limits the overall performance of the liquid fuel reformer

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