Raw material preheating part integrated steam reformer and hydrogen production system containing it

Abstract

This invention relates to a feed preheating part integrated steam reformer and a hydrogen preparation system comprising same. More specifically, the present invention relates to steam reformation reactor configured to supply uniform reaction heat to the reaction tube in the reformer due to the high convective heat exchange efficiency and having higher reformed conversion performance and excellentdevice compact efficiency. The steam reformer comprises: a housing; a burner configured to generate reaction heat at the center of the internal portion of the housing; a plurality of reaction tubes arranged at the concentric circle by taking the burner as a center; a casing for convective heat transfer induction spaced apart at the outer side surface of the reaction tubes and encircling the sidesof the reaction tubes; and a discharge tube communicating with the casing for convective heat transfer induction for discharging gases, wherein the lower end of the spaced space between the outer sidesurfaces of the reaction tubes and the casing for convective heat transfer induction is opened.

Description

technical field [0001] The invention relates to a steam reformer. More specifically, it relates to a steam reforming reaction that provides uniform reaction heat to the reaction tubes located inside the reformer due to high convective heat exchange efficiency, and has higher reforming conversion performance and excellent device compactness efficiency device. Background technique [0002] The steam reformer is a reactor that produces hydrogen from natural gas whose main component is methane. The raw material gas and water vapor are converted into a reformed gas mixed with hydrogen, carbon monoxide, and carbon dioxide on the catalyst, which causes a strong endothermic reaction, so additional supply of reaction heat is required. The steam reformer is connected with a steam generator required for the reaction and a preheater for preheating reactants to form the whole project. Here, as for the heat of the steam generator and the preheater, the catalyst layer can be heated, and...

AI Technical Summary

Problems solved by technology

Here, since the heat flux of the reaction heat generated by the burner to the reaction tube is very large, it is advantageous to maximize the processing capacity, but there is a risk of local heating of the reaction tube due to direct contact with the flame, etc. A uniform reaction cannot occur, resulting in a decrease in reaction stability and conversion efficiency

In addition, since the reaction variation between the reaction tubes is serious, it is difficult to operate, maintain and manage, and there is a problem that expensive heat-resistant materials are required in the device.

This becomes a bigger obstacle in terms of rising demand for device miniaturization

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