Method for storing hydrogen and carbon dioxide by active carbon microballoons

Abstract

The invention relates to a method for storing hydrogen and carbon dioxide by active carbon microballoons, comprising the following steps of: cleaning a reactor and a pipeline thereof by using an inert gas; heating the active carbon microballoons to the temperature of 500-573 K; then evacuating to 10-5 pascals; keeping for 18-50 hours; absorbing the gases under the adsorbent pressure of 0.1-2.0 MPa and at the temperature of 77 K to normal temperature; achieving balance, and storing the hydrogen or the carbon dioxide by the active carbon microballoons. The quantity of the hydrogen stored by the active carbon microballoons can reach more than 8.0 percent by weight accounting for the total weight of the active carbon microballoons, and the quantity of the carbon dioxide stored by the active carbon microballoons can reach more than 90 percent by weight. The invention is easy to implement and has moderate and stable equipment operation conditions and very extensive industrialized application prospect.

Description

【Technical field】 [0001] The invention belongs to the technical field of gas storage, and more specifically relates to the technical field of storing hydrogen and carbon dioxide using activated carbon microspheres. 【Background technique】 [0002] Hydrogen will be the main fuel for human society in the future. The product of hydrogen combustion is water, which will not cause any environmental pollution or greenhouse effect. However, in the utilization of hydrogen energy, "storage" is the most critical issue hindering the extensive utilization of hydrogen energy. All countries in the world have invested a lot of manpower, material and financial resources in research to find hydrogen storage materials suitable for industrial use. [0003] Hydrogen storage materials should have the following requirements: (1) High volume and mass hydrogen absorption density; (2) Reversibility of hydrogen absorption and desorption; (3) Can be repeatedly charged and discharged. The U.S. Departmen...

AI Technical Summary

Problems solved by technology

At present, the methods mainly include solvent absorption method, adsorption method, membrane separation method and the combined application of these methods. Chemical absorption solvents have a good absorption effect on gases, but it is difficult to popularize them because they need to be heated when regenerating solvents, and the energy consumption is large. There are also disadvantages such as air pollution, easy oxidation and degradation, and serious corrosion of equipment.

Membrane separation method uses membrane or membrane module. Membrane separation technology is easy to operate and low in energy consumption. However, there are still many problems in the implementation of membrane materials and processes on an industrial scale. The heat resistance of the membrane itself or the membrane module is poor, and 150 ° C is the operating temperature upper limit of

Recently, some silica, zeolite and carbon inorganic membranes have been developed, but there are problems such as operating temperature, cost, and long-term operation reliability.