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Method and device of hydrogen production by natural gas and steam reforming for micro fuel cells

A micro fuel cell and steam reforming technology, applied in fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problems of bulky and unsuitable reactors, and achieve safe and reliable operation and small footprint. , The effect of reducing channel flow and dead zone

Inactive Publication Date: 2014-12-31
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although natural gas reforming hydrogen production technology has been widely used in industry, there are still many problems to be solved in the miniaturized distributed hydrogen production of this technology
This reaction is a strong endothermic reaction, and heat transfer and energy utilization are bottlenecks in this reaction. The reactors commonly used in industry are bulky and not suitable for distributed hydrogen production in kilowatt-level fuel cell systems for households and small commercial users. requirements

Method used

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  • Method and device of hydrogen production by natural gas and steam reforming for micro fuel cells
  • Method and device of hydrogen production by natural gas and steam reforming for micro fuel cells

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Embodiment 1

[0060] Catalyst particle 11 is selected from the reforming hydrogen production catalyst produced by Shandong Qilu Petrochemical Keli Chemical Research Institute. The catalyst is based on α-Al 2 o 3 As the carrier, metal nickel is the active component, the particle diameter is 5mm, and the loading capacity is 0.9L; the inner ring diameter R of the reactor main body 6 1 =160mm, outer ring diameter R 2 =196mm and height H=200mm, the height of the gap 22 on the baffle plate 19 is 20mm; the width of the arc-shaped channel on both sides of the joint between the upper part of the reactor main body 6 and the upper flange 5 of the reactor is 3cm; the diameter of the outer cylinder 10 of the reactor R 3 =300mm, length is 240mm, the length of the steel bar support of four stainless steels is 12cm, and the diameter of upper end cover 4 is 300mm, and height is 200mm; Thermal insulation material is ceramic fiber, and its thickness is 12cm; Natural gas preheating pipe 1, water The diamete...

Embodiment 2

[0063] Catalyst particle 11 is selected from the reforming hydrogen production catalyst produced by Shandong Qilu Petrochemical Keli Chemical Research Institute. The catalyst is based on α-Al 2 o 3 As the carrier, metal nickel is the active component, the particle diameter is 5mm, and the loading capacity is 1.8L; the diameter of the inner ring of the reactor body 6 is R 1 =160mm, outer ring diameter R 2 =196mm and height H=400mm, the height of the baffle plate 19 gap is 40mm; the width of the arc-shaped channel on both sides of the joint between the upper part of the reactor main body 6 and the upper flange 5 of the reactor is 3cm; the diameter R of the reactor outer cylinder 10 3=300mm, the length is 480mm, the length of the steel bar support made by four stainless steels is 20cm, the diameter of the upper end cover 4 is 300mm, and the height is 200mm; the insulation material is ceramic fiber, and its thickness is 12cm; natural gas preheating pipe 1, water The diameter of ...

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Abstract

The invention discloses a method and a device of hydrogen production by natural gas and steam reforming for micro fuel cells. The device comprises an upper end cover, a reactor body, a reactor upper flange, a reactor outer cylinder, a combustor and a preheating coiled tube, the preheating coiled tube comprises a natural gas preheating tube, a water preheating tube and a gas mixture preheating tube, the upper end cover and the reactor outer cylinder are of hollow cylindrical structures, the preheating coiled tube is arranged in the upper end cover, the reactor body is arranged in the reactor outer cylinder, the combustor is arranged on the lower portion of the reactor body, the reactor body is in flange connection with the reactor outer cylinder and the upper end cover and is of a hollow annular structure with a hollow center, an annular cavity is arranged on the periphery of the hollow center, two baffles are arranged in the annular cavity and divide the annular cavity into a left cavity and a right cavity, gaps are reserved on the lower portions of the baffles, and catalyst particles are distributed in the left cavity and the right cavity. The device is used for preparing synthesis gas by natural gas and steam reforming, and is fast in starting, convenient and feasible to mount and demount and small in size and occupied area.

Description

technical field [0001] This patent relates to hydrogen production by steam reforming of natural gas at atmospheric pressure, in particular to a method and device for hydrogen production by steam reforming of natural gas. The device is used to provide hydrogen-rich synthesis gas for a kilowatt-level proton exchange membrane fuel cell cogeneration system. technical background [0002] Hydrogen energy is a new type of efficient and clean energy, which is regarded as an effective alternative energy to solve the problem of greenhouse effect and improve energy utilization. However, hydrogen is not a primary resource that exists in large quantities in nature, and its density is low, flammable and explosive, storage and transportation costs are high, and it is dangerous. How to obtain hydrogen conveniently is one of the bottlenecks for the widespread use of hydrogen energy. Natural gas steam reforming technology is currently the most commonly used technical method for the production...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/06C01B3/38H01M8/04014H01M8/0606
CPCY02E60/50
Inventor 解东来张二涛
Owner SOUTH CHINA UNIV OF TECH
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