Efficient reformer for autothermal reforming of methane

Abstract

The invention discloses an efficient reformer for autothermal reforming of methane. The efficient reformer for autothermal reforming of methane comprises an external cylinder body and an internal cylinder body; the external cylinder body and the internal cylinder body are concentrically arranged cylinders; an annular space between the external cylinder body and the internal cylinder body comprisesa combustion chamber and a combustion buffering chamber, wherein the combustion chamber is formed in the upper part and used for supplying heat to combustion, and the combustion buffering chamber isformed in the lower part; and the cylindrical space in the internal cylinder body comprises a reforming buffering chamber and a reforming chamber, wherein the reforming buffering chamber is formed inthe upper part, and the reforming chamber is formed in the lower part of the reforming buffering chamber and used for hydrogen production by reforming. As an external combustion chamber of a reactor has a small section, and a reforming chamber of the reactor has a big section, the heat transfer resistance from the combustion chamber to the reforming chamber is reduced, the staying time of reforming gas in the reforming chamber is also increased, and the strong heat of combustion is sufficiently absorbed; moreover, compared with a common internal combustion and external reforming form, the efficient reformer for autothermal reforming of methane, disclosed by the invention, has the advantages that the heat exchanging areas of the combustion chamber and the reforming chamber are also increased, and the heat exchanging efficiency is made higher.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production from methane, in particular to a high-efficiency reformer for autothermal reforming of methane. Background technique [0002] Hydrogen fuel cells are a promising technology for stationary power plants due to their comparable efficiency to conventional power plants, low noise, and high-purity exhaust gases. Although the terminal fuel for stationary fuel cells is hydrogen, the feed fuel can be methane, natural gas, biogas or syngas. Fuel flexibility requires the conversion of raw fuels to hydrogen. Steam reforming is a method of producing hydrogen, carbon monoxide and other useful products from methane gas. Compared with other methane reformers, steam reforming has the advantage of high production efficiency. One of the most cost-effective and industrialized methods of producing hydrogen is through steam methane reforming (SMR), which accounts for more than 40% of global hydrogen prod...

AI Technical Summary

Problems solved by technology

[0003] In the current research on methane hydrogen production, since methane hydrogen production is an endothermic reaction, most studies use external electric heating or furnace heating to provide heat for the reformer. This method not only increases the complexity of the device, but also increases the Cost input is not conducive to energy saving

Heat-absorbing and exothermic coupling is an ideal choice compared to external electric heating or furnace heating. In the heat-absorbing and exothermic coupling mode, most of them adopt the structure of internal combustion and external reforming, but this structure cannot achieve good reshaping effect

Images