Methane reforming system

A reforming system, methane technology, applied in inorganic chemistry, chemical industry, climate sustainability, etc., can solve the problems of high energy consumption, high requirements for equipment temperature resistance, low energy utilization efficiency of methane reforming system, etc. Achieve the effect of improving methane conversion rate, energy utilization rate, and space utilization rate

Active Publication Date: 2016-07-20
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

At present, the traditional industrial hydrogen production method is mainly through the reforming of methane and steam, and the reaction temperature is above 700°C. Not only does it require high temperature resistance of the equipme

Method used

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Example

[0024] 1. The first embodiment

[0025] In an exemplary embodiment of the present invention, a methane reforming system is provided. figure 1 It is a schematic diagram of the structure of the methane reforming system according to the first embodiment of the present invention. Such as figure 1 As shown, a methane reforming system of this embodiment includes: a hydrogen separation device 1; a heat exchanger 2; a carbon dioxide separation device 3; and a solar concentrator 4. Among them, the hydrogen separation device 1 and the carbon dioxide separation device 3 both use membrane material separation devices.

[0026] Please refer to figure 1 The inner chamber of the hydrogen separation device 1 is separated by a hydrogen permeable membrane into two types of areas-a first type area on the hydrogen permeable membrane separation side and a second type area on the hydrogen permeable membrane feed gas supply side. Among them, the hydrogen partial pressure in the first type region is small...

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Abstract

The invention provides a methane reforming system.In the system, a methane and vapor pipeline passes through a hydrogen separation device and a carbon dioxide separation device in sequence in a circulating mode, hydrogen and carbon dioxide generated from wet reformation of methane are separated alternately to promote methane reformation reaction equilibrium to move to the forward direction, and then methane conversion rate is increased greatly compared with a one-time reaction conversion rate under the non-circulating condition.Besides, a heat exchanger is additionally arranged between the hydrogen separation device and the carbon dioxide device to recover lost heat generated by difference in operation temperatures of the hydrogen separation device and the carbon dioxide separation device, so that the energy utilization rate of the system is increased.

Description

technical field [0001] The invention relates to the technical field of new energy (renewable energy), in particular to a methane reforming system. Background technique [0002] Hydrogen is a clean energy with high energy density. How to produce hydrogen efficiently and at low cost is currently a research hotspot in various countries. At present, the traditional industrial hydrogen production method is mainly through the reforming of methane and steam, and the reaction temperature is above 700°C. Not only does it require high temperature resistance of the equipment, but also the methane reforming reaction needs to absorb a lot of heat, which mainly comes from fossils. Energy combustion, energy consumption is large, and the energy utilization efficiency of the methane reforming system is low. Contents of the invention [0003] (1) Technical problems to be solved [0004] The invention provides a methane reforming system to reduce the cost of producing hydrogen by methane r...

Claims

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Application Information

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IPC IPC(8): C01B3/26
CPCC01B3/26C01B2203/0233Y02P20/10Y02P20/129Y02P20/133Y02P20/50
Inventor 郝勇王宏圣
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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