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Electrochemical reforming system for dry reforming of methane and carbon dioxide and construction method and using method of electrochemical reforming system for dry reforming of methane and carbon dioxide

A carbon dioxide and reforming system technology, applied in the electrolysis process, electrolysis components, etc., can solve the problems of catalyst deactivation, high temperature conditions, etc., and achieve the effect of high selectivity, high conversion rate, and easy operation

Inactive Publication Date: 2016-08-17
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide an electrochemical reforming system for methane carbon dioxide dry reforming and its construction method and use method in order to solve the limitation of high temperature conditions in the existing reforming reaction and the problem of catalyst deactivation caused by carbon deposition

Method used

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  • Electrochemical reforming system for dry reforming of methane and carbon dioxide and construction method and using method of electrochemical reforming system for dry reforming of methane and carbon dioxide
  • Electrochemical reforming system for dry reforming of methane and carbon dioxide and construction method and using method of electrochemical reforming system for dry reforming of methane and carbon dioxide

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specific Embodiment approach 1

[0015] Specific Embodiment 1: In this embodiment, an electrochemical reforming system for dry reforming of methane and carbon dioxide includes a plurality of electrolytic cell sheets, a reactor 1 and an external power supply 2; the plurality of electrolytic cell sheets are arranged in parallel in the horizontal direction In the reactor 1, the electrolytic cell sheet includes an electrolyte film 3 and two porous electrodes 4, the upper surface and the lower surface of the electrolyte film 3 are respectively connected to the two porous electrodes 4, and the porous electrodes 4 are connected to the external power supply 2 through wires. connected.

[0016] The external power supply in this embodiment is direct current or alternating current.

[0017] The electrolytic cell of the system in this embodiment is composed of electrolytes and electrodes. If the power supply is direct current, dissociation of carbon dioxide occurs in the cathode to generate carbon monoxide and oxygen ion...

specific Embodiment approach 2

[0018] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the reactor described in 2 is a ceramic tube or a glass tube. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Specific Embodiment Three: In this embodiment, a construction method of an electrochemical reforming system for dry reforming of methane and carbon dioxide is as follows: 1. The electrolyte material is prepared into an electrolyte film by a casting method, and then sintered at a high temperature to obtain a dense electrolyte film 3; 2. Prepare electrodes on both sides of the dense electrolyte film 3 by screen printing, and then use a pore-forming agent and high-temperature calcination to obtain a porous electrode 4; 3. Prepare a confluence layer on the porous electrode 4 by screen printing, and then After high-temperature sintering, electrolytic cell sheets are obtained; 4. Place n electrolytic cell sheets in reactor 1, and then communicate with external power supply 2 through porous electrodes 4 and wires to obtain an electrochemical reforming system for dry reforming of methane and carbon dioxide, wherein n≥1.

[0020] The electrochemical reforming method proposed in ...

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Abstract

The invention relates to an electrochemical reforming system for dry reforming of methane and carbon dioxide and a construction method and a using method of the electrochemical reforming system for dry reforming of methane and carbon dioxide. The electrochemical reforming system for dry reforming of methane and carbon dioxide and the construction method and the using method of the electrochemical reforming system for dry reforming of methane and carbon dioxide aim at solving the problem that because of high-temperature condition limitation in an existing reforming reaction and carbon deposition, catalyst deactivation is caused. The system comprises a plurality of electrolytic tank thin pieces, a reactor and an external power source. The construction method includes the steps that firstly, an electrolyte thin film is prepared through a tape casting method; secondly, electrodes are prepared through a silk-screen printing method, and , and porous electrodes are obtained through a pore-forming agent and high-temperature calcination; thirdly, a confluence layer is prepared, and the electrolytic tank thin pieces are obtained after high-temperature sintering; and fourthly, the electrolytic tank thin pieces are placed in the reactor, and the power source is connected. The constructed system has the characteristics that the methane conversion efficiency is high, synthetic gas selectivity is high, and carbon deposition is avoided, and the preparation technology is simple, low in cost and easy and convenient to operate. The electrochemical reforming system for dry reforming of methane and carbon dioxide and the construction method and the using method of the electrochemical reforming system for dry reforming of methane and carbon dioxide belong to the electrochemical reforming field of dry reforming of methane and carbon dioxide.

Description

technical field [0001] The invention relates to an electrochemical reforming system for dry reforming of methane and carbon dioxide, a construction method and a use method thereof. Background technique [0002] The carbon dioxide dry reforming of methane can produce high value-added chemical products, which has been one of the research hotspots at home and abroad in the past ten years. This process has important theoretical and practical significance. The proportion of natural gas in the world's energy structure is increasing day by day. As we all know, methane and carbon dioxide are the two major greenhouse gases, and many natural gases contain a certain amount of carbon dioxide, such as the ratios of methane and carbon dioxide in Natuna and Arun natural gas are 28:71 and 75:15, respectively. The utilization of methane in natural gas generally needs to remove carbon dioxide first, and carbon dioxide is a very stable compound, so the conversion and removal will inevitably c...

Claims

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Application Information

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IPC IPC(8): C25B1/02C25B1/00
CPCC25B1/00C25B1/02
Inventor 刘立敏朱玥李思尹冉
Owner NORTHEAST FORESTRY UNIVERSITY
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