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Adsorption-hydration reaction dual hydrogen-storing method and device

A hydration reaction, dual technology, applied in the container filling method, container discharge method, hydrogen technology and other directions, can solve the problems of slow gas storage rate, high hydrogen storage gas pressure, difficult to popularize, etc., to achieve convenient operation and improve storage. rate effect

Active Publication Date: 2012-06-27
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the main problems in hydrogen storage are high gas storage pressure, relatively slow gas storage rate, hydrogen storage materials cannot be recycled, hydrogen storage technology is still not perfect, and it is difficult to promote in industrial applications

Method used

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  • Adsorption-hydration reaction dual hydrogen-storing method and device
  • Adsorption-hydration reaction dual hydrogen-storing method and device
  • Adsorption-hydration reaction dual hydrogen-storing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, the carbon nanotubes are soaked in a concentrated acid solution prepared with a mass ratio of concentrated sulfuric acid and concentrated nitric acid for 48 hours, and then taken out and dried under vacuum conditions. A tetrahydrofuran aqueous solution with a mass fraction of 21% was prepared (there was a slight excess of tetrahydrofuran in the reagent preparation due to the strong volatility of tetrahydrofuran). Fill the carbon nanotubes in the hydrogen storage tank, and evenly spray the tetrahydrofuran aqueous solution 3 times the mass of the carbon nanotubes on the carbon nanotubes. In order to avoid the volatilization of the tetrahydrofuran, this process should be carried out in a low temperature environment as much as possible. After sealing the hydrogen storage tank, place it for 24 hours, so that the carbon nanotubes can fully contact with the tetrahydrofuran aqueous solution. Then vacuumize the system, inject hydrogen into the hydrogen storage tank, and k...

Embodiment 2

[0027] Fill the carbon nanotubes after the concentrated acid immersion and drying treatment in the hydrogen storage tank, prepare a tetrabutylammonium bromide (TBAB) aqueous solution with a mass fraction of 32 wt%, and prepare the solution with an amount twice the mass of the carbon nanotubes The proportion is sprayed in the carbon nanotube system, the mixture is put into the hydrogen storage tank, and the hydrogen storage tank is sealed and left for 12 hours. Then vacuumize the system, and pass pressurized hydrogen into the storage tank to keep the pressure of the hydrogen storage tank at 30MPa. After the inflation is completed, set the ambient temperature in the hydrogen storage tank to -5°C, and the hydrogen storage process begins. When the pressure in the hydrogen storage tank does not change greatly, the hydrogen storage process basically ends.

[0028] The hydrogen release process is as in Example 1.

Embodiment 3

[0030] The concentrated acid soaked and cleaned carbon nanotube powder was vacuum-dried and put into a hydrogen storage tank, then a cycloacetone-water solution with a mass fraction of 14.77% was prepared, and an equivalent solution with the same mass as the carbon nanotube was evenly sprayed on the In the carbon nanotube powder in the hydrogen storage tank, then the hydrogen storage tank was sealed for 12 hours and vacuumized. Pass the pressurized hydrogen into the hydrogen storage tank, keep the pressure inside the hydrogen storage tank at 15MPa, turn on the external refrigeration cycle of the hydrogen storage tank, set the temperature at 0°C, and start storing hydrogen. When the pressure in the hydrogen storage tank does not change, the hydrogen storage process ends.

[0031] The hydrogen release process is as in Example 1.

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Abstract

The invention provides an adsorption-hydration reaction dual hydrogen-storing method and a device for realizing the hydrogen-storing method. The method provided by the invention comprises the following steps: 1) performing hydrophilic treatment on a carbon nanotube after the carbon nanotube is purified; 2) preparing a solution for generating hydrate, and uniformly spraying the prepared solution into the carbon nanotube treated in the step (1); 3) placing a mixed system of the soaked carbon nanotube and water solution into a hydrogen-storing tank, compacting the mixed system, covering a hydrogen-storing tank cover, sealing and standing by till uniformly mixing; and 4) vacuumizing the hydrogen-storing tank, and then connecting the hydrogen-storing tank with a hydrogen source, and performing a hydrogen-storing process. The device provided by the invention is mainly composed of the hydrogen-storing tank, the hydrogen source, a gas booster pump, a pressure instrument, a temperature observing system, a pipeline, and the like. The present problems of utilizing, storing and transporting hydrogen are solved according to the method and the device provided by the invention, the hydrogen storage rate is increased and the operation is convenient.

Description

technical field [0001] The invention relates to the technical field of clean energy utilization, in particular to a composite hydrogen storage method utilizing carbon nanotube porous material adsorption and hydrate cage structure storage and a device for realizing the hydrogen storage method. technical background [0002] In today's increasingly prominent energy and environmental issues, the application of clean energy is also flourishing. Hydrogen is a high-quality clean energy, and its combustion product is water, which is very friendly to the environment. At the same time, hydrogen energy has unique advantages such as abundant resources, high thermal efficiency, renewability and no pollution in use. The utilization of hydrogen energy has been highly valued by governments, automobile companies, energy companies and environmental organizations. The utilization of hydrogen energy mainly includes the production, storage, transportation and application of hydrogen, among whic...

Claims

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Application Information

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IPC IPC(8): C01B3/02F17C1/00F17C13/00
CPCY02E60/321Y02E60/32Y02P90/45
Inventor 臧小亚梁德青吴能友
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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