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Device for continuously and controllably producing hydrogen by virtue of hydrolysis of magnesium hydride and method for producing hydrogen by device

A technology of hydrolysis hydrogen production and hydrogen production equipment, which is applied in the field of energy chemistry and power chemical products, can solve the problems of unstable hydrogen production rate, cumbersome operation, and decreased hydrogen supply rate, and meet the long-term stable requirements and high hydrogen production efficiency , highly controllable effect

Inactive Publication Date: 2015-04-29
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the concentrated reaction of large doses of solid-liquid reactants, the adjustability of the hydrogen production reaction process is not good, and the hydrogen production rate of the device is unstable (the reactant is quantified, with the consumption of the reactant and the coating of the passivation layer, hydrogen supply rate decreased)
In addition, when the reactant is exhausted, the reaction must be stopped, and then the reactant is added to start the reaction again, which is cumbersome and complicated.
Therefore, the existing magnesium hydride hydrolysis hydrogen production technology (hydrogen production method and hydrogen production device) cannot meet the requirements of application-oriented online hydrogen sources

Method used

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  • Device for continuously and controllably producing hydrogen by virtue of hydrolysis of magnesium hydride and method for producing hydrogen by device
  • Device for continuously and controllably producing hydrogen by virtue of hydrolysis of magnesium hydride and method for producing hydrogen by device
  • Device for continuously and controllably producing hydrogen by virtue of hydrolysis of magnesium hydride and method for producing hydrogen by device

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: as figure 1 As shown, a hydrogen production device suitable for the micro-dosage reaction of magnesium hydride-magnesium chloride solution system, the device includes a magnesium hydride storage tank 1, a magnesium chloride solution storage tank 4, a hydrogen production reactor 5, a solid-liquid separator 7, and a feeder 2, hydrogen purifier 8 and load 9.

[0031] The magnesium hydride reservoir 1 is connected to the first feed port I of the hydrogen production reactor 5 through the feeder 2 through the pipeline, and the magnesium chloride solution reservoir 4 is connected to the second feed of the hydrogen production reactor 5 through the micro metering pump 3 through the pipeline. Port II; the first outlet i of the hydrogen production reactor 5 is connected to the hydrogen purifier 8 through a pipeline, and the second outlet ii of the hydrogen production reactor 5 is connected to the inlet of the spiral reaction tube 6; the outlet of the spiral reaction ...

Embodiment 2

[0034] The magnesium hydride was pretreated by ball milling activation, the ball milling activation time was 3.0h, the rotation speed was 400rpm, the ball-to-material ratio was 40:1, and dry powder granulation was made into 20mg cylindrical granules. The above-mentioned micro-dose cylindrical particles are reacted with a magnesium chloride solution at a temperature of 60° C. and a concentration of 0.5 mol / L. The feeding dose of each magnesium hydride is 20mg, the feeding time interval of each tablet is 20s, the feeding dose of magnesium chloride solution is 0.1mL / s, and the solid-liquid dosage ratio is 1:5g / mL.

[0035] Magnesium hydride particles are introduced from the first feed port I of the reactor, magnesium chloride solution is introduced from the second feed port II, and the solid-liquid two-phase reactant reacts rapidly in the hydrogen production reactor to generate hydrogen gas, and the hydrogen gas comes from the hydrogen production reactor. It is exported from the ...

Embodiment 3

[0037] The magnesium hydride was subjected to ball milling activation pretreatment, the ball milling activation time was 4h, the rotation speed was 300rpm, the ball-to-material ratio was 30:1, and dry powder granulation was made into 50mg cylindrical granules. The above-mentioned micro-dose cylindrical particles are reacted with a magnesium chloride solution at a temperature of 60° C. and a concentration of 0.5 mol / L. The feeding dose of each magnesium hydride is 50mg, the feeding time interval of each pellet is 20s, the feeding dose of magnesium chloride solution is 0.1mL / s, and the solid-liquid dosage ratio is 1:5g / mL.

[0038] Magnesium hydride particles are introduced from the first feed port I of the reactor, magnesium chloride solution is introduced from the second feed port II, and the solid-liquid two-phase reactant reacts quickly in the hydrogen production reactor to generate hydrogen gas, and the hydrogen gas comes from the hydrogen production reactor. It is exported...

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Abstract

The invention discloses a device for continuously and controllably producing hydrogen by virtue of hydrolysis of magnesium hydride and a method for producing hydrogen by the device. The device comprises a magnesium hydride storage device (1), a magnesium chloride solution storage device (4), a hydrogen production reactor (5 ) and a solid-liquid separator (7), wherein a first material inlet (I) of the hydrogen production reactor (5 ) is connected with the magnesium hydride storage device (1), a second material inlet (I) of the hydrogen production reactor is connected with the magnesium chloride solution storage device (4), a first guide outlet (I) of the hydrogen production reactor is connected with a hydrogen purifier (8), a second guide outlet (II) of the hydrogen production reactor is connected with an inlet of the solid-liquid separator (7) through a spiral reaction pipe (6) and an outlet of the solid-liquid separator (7) is connected with the hydrogen purifier (8). By the device for producing hydrogen, hydrogen can be efficiently, controllably and continuously stably output and the device has the advantages of strong operability, high safety and is easy to increase and amplify and can meet the requirements of hydrogen fuel cells with different powers on online hydrogen sources.

Description

technical field [0001] The invention relates to the technical fields of energy chemistry and power chemical products, in particular to a continuously controllable magnesium hydride hydrolysis hydrogen production device and a hydrogen production method using the device. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) has become one of the most promising new mobile power sources for commercial applications due to its advantages of no pollution, high efficiency, long life, and miniaturization. Efficient, stable, safe, and fast-response online hydrogen source technology is the premise and key to push hydrogen fuel cells into application. However, common methods such as high-pressure hydrogen storage, liquid hydrogen storage, and solid-state adsorption hydrogen storage are difficult to meet the above requirements. Therefore, in recent years, hydrolysis online hydrogen source technology based on active metals, borohydrides, and magnesium-based hydrides ha...

Claims

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Application Information

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IPC IPC(8): C01B3/06
CPCY02E60/36
Inventor 李李泉李姝朱云峰刘虎
Owner NANJING UNIV OF TECH
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