Methanol-water steam reforming and hydrogen separation integrated low-pressure hydrogen production system and method thereof

A technology of steam reforming and hydrogen production system, which is applied in the field of low pressure hydrogen system, can solve the problems of inability to realize cyclic hydrogen production and complex hydrogen production process, and achieve the goals of obtaining ecological benefits, optimizing and simplifying the structure, and reducing carbon dioxide emissions Effect

Active Publication Date: 2020-02-21
中科液态阳光(苏州)氢能科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] At the same time, it also provides a low-pressure hydrogen method to solve the problem that the current hydrogen production process is complicated and cannot achieve circular hydrogen production.

Method used

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  • Methanol-water steam reforming and hydrogen separation integrated low-pressure hydrogen production system and method thereof
  • Methanol-water steam reforming and hydrogen separation integrated low-pressure hydrogen production system and method thereof

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Experimental program
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Effect test

Embodiment 1

[0053] like figure 1 figure 2 As shown, a methanol steam reforming and hydrogen separation integrated low-pressure hydrogen system includes a reforming separation device 3, a three-phase heat exchange device 2, an air compressor 7, a steam trap 8, a refrigerator 6, and a carbon dioxide separation device 4 and water gas reforming device 5.

[0054] The reforming and separating device 3 is connected to the methanol water vapor inlet pipe, the hydrogen outlet pipe and the carbon dioxide mixed residual gas outlet pipe, and the carbon dioxide mixed residual gas outlet pipe is connected to the three-phase heat exchange device 2, the air compressor 7, and the steam trap 8 in sequence , refrigerating machine 6, carbon dioxide separation device 4 and water gas reforming device 5, the outlet of the water gas reforming device 5 is connected to the outlet pipe of the reformed mixed gas, and the outlet pipe of the reformed mixed gas is connected to the inlet of the reforming separation d...

Embodiment 2

[0073] A methanol-water low-pressure hydrogen system, using the above-mentioned low-pressure hydrogen system, comprising the following steps:

[0074] S1. The liquid pump 1 sends the methanol water into the methanol water vapor pipe, and the pump pressure is 2-5 MPa. The methanol water is heated and vaporized by the three-phase heat exchange device 2 to become methanol water vapor and enters the reaction chamber of the reforming separation device 3. Methanol steam is decomposed into a mixed gas of hydrogen, carbon dioxide and carbon monoxide;

[0075] The gas phase components of the mixed gas of hydrogen, carbon dioxide and carbon monoxide are 65-75% hydrogen, 20-26% carbon dioxide, and 0.3-3% carbon monoxide;

[0076] S2. The hydrogen suction pipe 32 separates the mixed gas of hydrogen, carbon dioxide and carbon monoxide, and the separated pure hydrogen is collected from the output of the hydrogen suction pipe 32; the remaining carbon dioxide mixed gas is output from the reac...

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Abstract

The invention relates to a methanol-water steam reforming and hydrogen separation integrated low-pressure hydrogen production system. The system comprises a reforming separation device, a three-phaseheat exchange device, an air compressor, a steam trap, a refrigerating machine, a carbon dioxide separation device and a water gas reforming device; and the pressure controlled by the air compressor is 5-30 MPa, and the temperature controlled by the refrigerating machine is -35-30.8 DEG C. A methanol-water low-pressure hydrogen production method comprises the following steps: methanol-water steamis decomposed to form a mixed gas of hydrogen, carbon dioxide and carbon monoxide, and the hydrogen mixed residual gas is fed into the water gas reforming device and is reformed to make a ratio of hydrogen to carbon dioxide to carbon monoxide in the reformed mixed gas close to a ratio of hydrogen to carbon dioxide to carbon monoxide in the mixed gas of hydrogen, carbon dioxide and carbon monoxide;and the mixed gas is fed into the reaction cavity again, and undergoes hydrogen separation operation. The gas in the system is circularly purified, the theoretical yield can reach 100%, and the hydrogen yield is greater than or equal to 95%.

Description

technical field [0001] The invention relates to a low-compressed hydrogen system integrated with methanol steam reforming and hydrogen separation and a method thereof. Background technique [0002] Hydrogen energy is the most ideal energy source in the 21st century. As a fuel for automobiles, it is easy to start at low temperature, and has little corrosion effect on the engine, which can prolong the service life of the engine. Because hydrogen and air can be mixed evenly, the carburetor used in general cars can be completely omitted, thereby simplifying the structure of existing cars. Even more interesting, just add 4% hydrogen to gasoline. Using it as a vehicle engine fuel can save fuel by 40%, and there is no need to make much improvement to the gasoline engine. Hydrogen fuel cell as power generation system. [0003] No pollution, the fuel cell has no pollution to the environment. It uses electrochemical reaction instead of combustion (gasoline, diesel) or energy stora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/32C01B3/38C01B3/50C01B3/12F25J3/08C01B32/50
CPCC01B3/323C01B3/38C01B3/50C01B3/505C01B3/12F25J3/08C01B32/50C01B2203/0233C01B2203/1005C01B2203/1076C01B2203/1041C01B2203/041C01B2203/046C01B2203/0475C01B2203/047C01B2203/1223C01B2203/1241F25J2215/80
Inventor 岳锌韩涤非李佳毅姚婷婷赵纪军岳野李军
Owner 中科液态阳光(苏州)氢能科技发展有限公司
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