Sleeve type catalytic burner and application

Abstract

The invention discloses a sleeve type catalytic burner. The sleeve type catalytic burner is used for releasing heat by utilizing catalytic combustion reaction of hydrogen and oxygen, is particularly suitable for the field of methanol steam reforming hydrogen production reaction in a high-temperature proton exchange membrane fuel cell (HT-PEMFC), can be used for providing heat for a reforming reactor and adjusting the temperature distribution of a reactor bed, is arranged in the reforming reactor, is not in contact with the external environment, and reduces the loss of heat, so that the whole reforming cavity completely receives the high-temperature radiation heat of a combustion cavity; meanwhile, a channel is defined by a combustor and an external reformer, combustion tail gas flows along the channel in the combustor to conduct convective heat transfer, the heat utilization rate is increased, holes with different diameters are distributed in the inner wall and the outer wall of the sleeve type combustor, and by adjusting the hole diameter or the hole distance of the inner wall, combustion gas quantity at different positions is controlled, so that temperature distribution at all positions of the combustor is adjusted, the overall temperature distribution of the combustor tends to be consistent, or the temperature difference at all positions is small, the problem of uneven temperature distribution of a bed layer of the reforming reactor is solved, and the overall conversion rate and the heat utilization rate of the reforming reactor are effectively improved.

Description

technical field [0001] The invention relates to the technical field of catalytic combustors, and relates to a sleeve-type catalytic combustor, which utilizes the catalytic combustion reaction of hydrogen and oxygen to release heat, and is especially suitable for methanol steam reforming in high-temperature proton exchange membrane fuel cells (HT-PEMFC). In the field of hydrogen reaction, it is used to provide heat to the reforming reactor and adjust the temperature distribution of the reactor bed. Background technique [0002] The hydrogen production reaction of steam reforming of methanol in high-temperature proton exchange membrane fuel cell (HT-PEMFC) requires a lot of heat, which is usually provided by catalytic burners. At present, a large part of the heat is lost by catalytic burners or exposed to the outside, and its radiated heat The utilization rate is also extremely low; or the temperature is uneven everywhere, the temperature gradient is large, and the heat utiliz...

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Problems solved by technology

[0002] The hydrogen production reaction of steam reforming of methanol in high-temperature proton exchange membrane fuel cell (HT-PEMFC) requires a lot of heat, which is usually provided by catalytic burners. At present, a large part of the heat is lost by catalytic burners or exposed to the outside, and its radiated heat The utilization rate is also extremely low; or the temperature is uneven everywhere, the temperature gradient is large, and the heat utilization rate is low, resulting in low performance (conversion rate) of the reforming reactor

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