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Hydrogen production device and hydrogen production method for reforming organic compounds through low-temperature plasmas

A technology of organic compounds, low temperature plasma, used in chemical instruments and methods, inorganic chemistry, hydrogen, etc.

Pending Publication Date: 2021-01-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no experimental device for efficient hydrogen production using plasma and hydrocarbon compounds.

Method used

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  • Hydrogen production device and hydrogen production method for reforming organic compounds through low-temperature plasmas
  • Hydrogen production device and hydrogen production method for reforming organic compounds through low-temperature plasmas

Examples

Experimental program
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Effect test

Embodiment 1

[0074] Adopt the hydrogen production device of the low-temperature plasma reforming organic compound provided by the invention, the organic compound selects n-heptane (C 7 h 16 ). The main reaction formula of plasma reforming n-heptane to produce hydrogen can be described by formulas (1)-(4):

[0075] C 7 h 16 →CH 4 +2C 2 h 2 +C 2 h 4 +2H 2 (1)

[0076] o 2 +2CH 4 →2CO+4H 2 (2)

[0077] h 2 O+CH 4 →CO+3H 2 (3)

[0078] h 2 O+CO→CO 2 +H 2 (4)

[0079] In the above hydrogen production process, the carrier gas is air, and the flow rates of carrier gas, water and n-heptane are 15L / min, 18g / min, and 53g / min respectively; the output voltage of the high-voltage power supply is 800V, the output current is 0.5A, and the electrode distance is 6.5mm. The product mainly contains H 2 and CO 2 , hydrogen yield 98.9%.

Embodiment 2

[0081] The organic compound is n-octane (C 8 h 18 ), the main reaction formula of plasma reforming n-octane hydrogen production can be described by formula (5)-(7):

[0082] C 8 h 18 →2CH 4 +2C 2 h 2 +C 2 h 4 +H 2(5)

[0083] o 2 +CH 4 →CO 2 +2H 2 (6)

[0084] 2H 2 O+CH 4 →CO 2 +4H 2 (7)

[0085] In the above-mentioned hydrogen production process, the carrier gas is selected to contain 50 volume % O 2 Oxygen-enriched air is used as the carrier gas, and the flow rates of carrier gas, water and n-octane are 10L / min, 14g / min, and 58g / min respectively; the output voltage of the high-voltage power supply is 680V, ​​the output current is 0.4A, and the electrode distance is 6mm. The product mainly contains H 2 and CO 2 , hydrogen yield 96.8%.

Embodiment 3

[0087] Organic compound selects toluene (C 7 h 8 ), the main reaction formula of plasma reforming toluene hydrogen production can be described by formula (8)-(11):

[0088] C 7 h 8 →CH 4 +iso-C 4 h 10 +H 2 +C (8)

[0089] o 2 +2C→2CO (9)

[0090] h 2 O+CH 4 →CO 2 +H 2 (10)

[0091] iso-C 4 h 10 +O 2 →CO 2 +H 2 (11)

[0092] In the above hydrogen production process, the carrier gas is air, and the flow rates of carrier gas, water and toluene are 18L / min, 27g / min, and 30g / min respectively; the output voltage of the high-voltage power supply is 710V, the output current is 0.42A, and the electrode distance is 6.5mm. The product mainly contains H 2 and CO 2 , 93.9% hydrogen yield.

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Abstract

The invention provides a hydrogen production device for reforming organic compounds through low-temperature plasmas. The hydrogen production device comprises a feeding system, a vaporization system, aplasma reactor, a high-voltage power supply and a hydrogen collection system. Organic compounds, water and carrier gas are input into the vaporization system through the feeding system, and the organic compounds and the water are vaporized and form mixed gas with the carrier gas to be input into the plasma reactor. Power is supplied through the high-voltage power supply, a plasma field is generated in the plasma reactor, organic compounds are subjected to reforming reaction to generate hydrogen-rich gas, and the hydrogen-rich gas is collected and separated by a hydrogen collecting system. Thehydrogen production device has the advantages of being small in size, high in efficiency, good in stability, wide in raw material source, wide in application range, low in energy cost and equipment cost and the like, plasma reforming hydrogen production can be conducted on various hydrogen-containing compounds, and on-line hydrogen supply is conducted on a fuel cell and a hydrogen energy automobile. The invention also provides a hydrogen production method using the device.

Description

technical field [0001] The invention relates to the technical field of chemical hydrogen production, in particular to a hydrogen production device for reforming organic compounds through low-temperature plasma, and a hydrogen production method using the device. Background technique [0002] With the increasingly prominent environmental and energy issues, the development of clean and efficient new energy has become a research hotspot all over the world. Due to its high efficiency and low emissions, fuel cells are considered to be the next generation after hydropower, thermal power and nuclear power. The fourth type of power generation technology has broad application prospects. A fuel cell is a power generation device that directly converts the chemical energy in fuel into electrical energy through an electrochemical reaction. In the past 20 years, fuel cells, an efficient and clean energy conversion device, have received widespread attention from governments, developers and...

Claims

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Application Information

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IPC IPC(8): C01B3/36C01B3/48
CPCC01B3/36C01B3/48C01B2203/0211C01B2203/0861
Inventor 王保伟彭叶平邹吉军
Owner TIANJIN UNIV
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