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Silent compact movable methanol low-temperature liquid-phase reforming hydrogen=production system

A technology of reforming hydrogen production and low temperature liquid phase, applied in the field of hydrogen energy, can solve the problems of large volume of the reaction device, application limitation, difficult to popularize and apply, etc.

Pending Publication Date: 2020-07-07
大方元素(广东)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, hydrogen production by steam reforming of methanol not only has a larger reaction device volume, but also consumes a lot of energy for the heating and vaporization of methanol and water, and the concentration of CO in the generated gas far exceeds the tolerance limit of proton exchange membrane (PEMFC) fuel cells. , need to add complex and expensive purification unit, which greatly limits its application
The high-temperature pyrolysis hydrogen production technology of methanol also has the above-mentioned problems, and it is difficult to popularize and apply

Method used

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  • Silent compact movable methanol low-temperature liquid-phase reforming hydrogen=production system
  • Silent compact movable methanol low-temperature liquid-phase reforming hydrogen=production system
  • Silent compact movable methanol low-temperature liquid-phase reforming hydrogen=production system

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Using nickel nitrate as the nickel source and citric acid as the carbon source, a solution was prepared with methanol and mixed evenly, heated while stirring in an oil bath until dry, and then heat-treated at 600°C under nitrogen protection to obtain the Ni@C catalyst. Its SEM picture is as follows figure 2 As shown, the catalyst has a unique Ni 0 、Ni 3C Two kinds of crystal phase hybrid structure, the microscopic appearance is nanometer solid spherical particles with a particle size of 28nm, the particles have a core-shell structure, the outer layer is a citric acid pyrolysis carbon shell, and the inner layer is a metal Ni core. The obtained Ni@C catalyst particles were filled in the annular space of the hydrogen production reactor, and the hydrogen production reactor was heated to 150 °C by an electric heating mantle. Configure 40% methanol aqueous solution in the raw material tank, and use a high-pressure advection pump to continuously pump methanol aqueous soluti...

Embodiment 2

[0028] Use nickel nitrate and copper nitrate as nickel source and copper source, citric acid as carbon source, make a solution with methanol and mix evenly, heat while stirring in an oil bath until dry, and then heat treat at 700°C under nitrogen protection to obtain NiCu@C catalyst. Its SEM picture is as follows image 3 As shown, the catalyst has a unique Ni 0 、Ni 3 C. Ni 3 Cu three crystal phase hybrid structure, the microscopic appearance is 63nm porous microspheres with a particle size of 15nm nanometer solid spherical particles, in which the 15nm nanometer solid spherical particles are a core-shell structure, and the outer layer is a citric acid pyrolysis carbon shell , the inner layer is a metal NiCu alloy core. The obtained NiCu@C catalyst particles were filled in the annular space of the hydrogen production reactor, and the hydrogen production reactor was heated to 190 °C by an electric heating mantle. Configure methanol aqueous solution with a concentration of 6...

Embodiment 3

[0030] Use nickel nitrate and copper nitrate as nickel and copper sources, 2-methylimidazole as carbon and nitrogen source, make a solution with methanol and mix evenly, heat while stirring in an oil bath until dry, and then pass through 900°C under the protection of nitrogen. The NiCu@CN catalyst was obtained after heat treatment at ℃. Its SEM picture is as follows Figure 4 As shown, the catalyst has a unique Ni 0 、Ni 3 C and Ni 3 Cu has a hybrid structure of three crystal phases, the microscopic appearance is petal-shaped spherical particles with a particle size of 3.5 microns, and the petals are a lamellar structure with an average thickness of 21 nm. The obtained NiCu@CN catalyst particles were filled in the annular space of the hydrogen production reactor, and the hydrogen production reactor was heated to 250 °C by an electric heating mantle. Configure methanol aqueous solution with a concentration of 60% in the raw material tank, and use a high-pressure advection pu...

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Abstract

The invention discloses a silent compact movable methanol low-temperature liquid-phase reforming hydrogen production system. According to the invention, 40-60 wt% of a methanol aqueous solution entersa vertical internal heat exchange axial flow turn-back overflow type structure hydrogen production reactor in a liquid form; vaporization through heating is not required, a liquid phase reforming reaction and a conversion reaction are carried out in a hydrogen production reactor; high-pressure hydrogen with the pressure of 4.0-10.0 MPa is generated through self-pressurization; the system sequentially enters a gas-liquid separator, an adsorption type high-pressure hydrogen storage tank and a PEMFC fuel cell under the self-pressurization pressure difference; the hydrogen supply device is simplein structure, free of a pressurizing unit, capable of achieving silent vibration-free and noise-free mobile hydrogen supply, compact in structure, silent, noise-free, energy-saving and efficient, theconcentration of CO in generated gas is smaller than 10 ppm, and the requirements of the proton exchange membrane fuel cell for actual application indexes such as the mass hydrogen storage density, the volume hydrogen storage density, the hydrogen cost and vibration noise are met.

Description

Technical field: [0001] The invention relates to the field of hydrogen energy technology, in particular to a silent and compact movable methanol low-temperature liquid-phase reforming hydrogen production system. Background technique: [0002] Hydrogen energy has the characteristics of abundant reserves, wide range of sources, high energy density, recyclable utilization, zero emission of greenhouse gases and pollutants, and is one of the most promising clean energy sources. Industries such as hydrogen fuel cell distributed power stations and hydrogen fuel cell vehicles are rapidly taking shape. [0003] Mobile vehicles such as automobiles have put forward higher requirements for safe and efficient hydrogen production, hydrogen storage and on-board hydrogen use. Many institutions and departments have proposed new standards for on-board hydrogen storage technology. The U.S. Department of Energy proposes that the on-board mass hydrogen storage density should reach 7.5wt%, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/32C01B3/50B01J8/02B01J23/755B01J27/24
CPCC01B3/326C01B3/50B01J8/0285B01J8/0242B01J23/755B01J27/24C01B2203/1223C01B2203/1058C01B2203/1076C01B2203/1005C01B2203/047C01B2203/066B01J2208/00407
Inventor 江婷王铁军张子庚
Owner 大方元素(广东)科技有限公司
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