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A kind of water-steam shift reactor for autothermal reforming hydrogen production reaction and method for improving CO conversion rate of water-steam shift reaction

A water-vapor transformation and autothermal reforming technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve the problems of not considering waste heat utilization, high power consumption, unsuitable for large-scale industrial applications, etc., and achieve effective use of energy. , make full use of and improve the effect of hydrogen production efficiency

Active Publication Date: 2022-08-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

However, this reaction method needs to use additional electric heating equipment to limit the reaction temperature, consumes high power, and is not suitable for large-scale industrial applications. At the same time, it does not consider the waste heat utilization in the reaction process. Therefore, the research and development of special water vapor shift reactors has the advantages of important application value

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  • A kind of water-steam shift reactor for autothermal reforming hydrogen production reaction and method for improving CO conversion rate of water-steam shift reaction

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Effect test

Embodiment 1

[0014] A water-steam shift reactor for autothermal reforming hydrogen production reaction, the reactor includes a square cavity, the two sides of the square cavity are water and air feed cavity and fuel feed cavity, the square cavity is on the upper Heat exchange fins are arranged on the sides of the cavity close to the water and air feed cavity and the fuel feed cavity to increase the heat exchange speed and form a temperature gradient; the lower end of the cavity is a high temperature inlet, and the upper end is a low temperature outlet. The heat exchange fins are perpendicular to the fluid flow direction in the square cavity and are located in the middle of the square cavity. The area of ​​the heat exchange fins on each side of the square cavity is 1 / 2 or 1 of the side area of ​​the square cavity. / 8.

[0015] The method for improving the CO conversion rate of the water-steam shift reaction by using the above-mentioned reactor, the square cavity of the water-steam shift rea...

Embodiment 2

[0019] After the fuel 15mL / min is completely burned, the tail gas will raise the temperature of the front-end reforming reactor and the shift reactor to about 700 ℃ and 500 ℃ respectively; then change the fuel 30mL / min, air 35L / min, deionized water feed 37mL / min , after being vaporized by the cavity water and air feed cavity and fuel feed cavity on both sides of the square cavity (the area occupied by the heat exchange fins on each side of the square cavity is 1 / 2 of the side area of ​​the square cavity) Enter the reforming reactor to produce H after the reaction 2 and CO, the reactant gas enters the shift reaction chamber for the water-vapor shift reaction, and the CO is converted into H 2 ; The square cavity of the water-steam shift reactor is filled with catalysts, from bottom to top, 1 / 5 places are all high temperature shift catalysts; 2 / 5 to 4 / 5 places are a mixture of high temperature shift catalysts and low temperature change catalysts, and 2 / 5 places are high temperatu...

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Abstract

The invention belongs to the technical field of fuel cells, in particular to a water-steam shift reactor for heating and reforming hydrogen production reaction and a method for improving CO conversion rate of water-steam shift reaction. The reactor includes a square cavity, the two sides of the square cavity are a deionized water feed cavity and a fuel feed cavity, and the sides of the cavity close to the deionized water feed cavity and the fuel feed cavity are on the square cavity. Heat exchange fins are provided; the lower end of the cavity is provided with a high temperature inlet, and the upper end is provided with a low temperature outlet. The square cavity of the water vapor shift reactor is filled with high and low temperature shift catalyst, the volume content of the high temperature shift catalyst decreases linearly from the high temperature inlet to the low temperature outlet, and the volume content of the low temperature shift catalyst increases linearly from the high temperature inlet to the low temperature outlet. filling. The present invention improves the CO conversion rate and further improves the hydrogen production efficiency.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a water-steam shift reactor for heating and reforming hydrogen production reaction and a method for improving CO conversion rate of water-steam shift reaction. Background technique [0002] In the autothermal reforming hydrogen production reaction, the carbon monoxide water vapor shift reaction includes a high temperature water vapor shift catalyst and a low temperature water vapor shift catalyst. The low-temperature shift catalyst has good catalytic activity at 180-260 °C, and there is a temperature blank area of ​​260-380 °C between the high-temperature and low-temperature shift catalysts. The water vapor shift reaction catalyst is in any suitable temperature range, so that the catalyst can achieve a relatively ideal catalytic effect. At the same time, the high-temperature and low-temperature shift catalysts are mostly filled separately for the high-temperature shift and lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/32C01B3/40H01M8/0612
CPCC01B3/32C01B3/326C01B3/40H01M8/0618C01B2203/0233C01B2203/066C01B2203/0811C01B2203/1076C01B2203/1047Y02P20/52
Inventor 王素力于文宇孙公权
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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