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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 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

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no. 1 example

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

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

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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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