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Method for converting greenhouse gas into carbon

A greenhouse gas, room temperature technology, applied in the field of fixation and utilization of greenhouse gases, can solve the problems of low conversion rate, high energy consumption, slow reaction rate, etc., and achieve the effect of simple and easy control and low energy consumption.

Active Publication Date: 2016-01-27
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods have disadvantages such as slow reaction rate, low conversion rate, and high energy consumption, which determines that it is difficult to truly realize large-scale production

Method used

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  • Method for converting greenhouse gas into carbon
  • Method for converting greenhouse gas into carbon
  • Method for converting greenhouse gas into carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In a dry air atmosphere, disperse 2g of lithium hydride powder into the bottom of the dry reactor, then seal the reactor and evacuate it, and then slowly introduce CO into the reactor. 2 Gas to a pressure of 6MPa, and finally inject 0.5ml of water into the reactor through pressure difference. The heat released by the reaction of water and lithium hydride can trigger the reaction of lithium hydride and CO 2gas reaction. After 5 minutes of reaction time, after the reaction is completed and cooled, first collect the gas in the reactor, then take out the solid product in the reactor and soak it in 8wt% dilute hydrochloric acid for 3 hours, then filter it, wash it with water, and dry it , the carbon material (purity greater than 95%) can be obtained.

Embodiment 2

[0037] Under an argon atmosphere, put 1 g of lithium hydride powder into the bottom of a dry tubular reactor, and slowly introduce CO into the tubular reactor. 2 Gas to a pressure of 5MPa, and then increase the temperature to 180°C at a rate of 0.5°C / min. Then cool down, first collect the gas in the reactor, then take out the solid product in the reactor to a concentration of 5wt% dilute hydrochloric acid and soak it for 12h, then filter it, wash it with water, and dry it to obtain the carbon material (purity greater than 95 %).

Embodiment 3

[0039] Under the protection of nitrogen atmosphere, disperse 1.5g lithium hydride powder into the bottom of the dry reactor, then seal the reactor and evacuate it, and then use the gas pressure difference to quickly (flow rate is about 950m / s) into the reactor into CO 2 Gas to a pressure of 7MPa. CO 2 The kinetic energy of the gas can trigger lithium hydride and CO 2 gas reaction. After 3 minutes of reaction time, after the reaction is finished and cooled, first collect the gas in the reactor, then take out the solid product in the reactor and soak it in 8wt% dilute hydrochloric acid for 6 hours, then filter it, wash it with water, and dry it , the carbon material (purity greater than 95%) can be obtained.

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Abstract

A method for converting greenhouse gas into carbon includes the steps that 1, under protective atmosphere and a room temperature, a metallic hydrogen-containing compound and the greenhouse gas make sufficient contact in a dry reactor, the greenhouse gas includes one or more of CO2, CO and CH4, and certain triggering energy is given so that effective components in the metallic hydrogen-containing compound and greenhouse gas can generate spontaneous reaction; the metallic hydrogen-containing compound is one or a mixture or composite of two or more of metal hydride, metallic aluminum hydride, metallic borohydride and metallic nitrogen hydride; 2, after reaction is completed and cooling is performed, the gas in the reactor is collected, then a reaction product is taken out of the reactor and soaked through acidic substances, and the carbon can be obtained through filtering, rinsing and drying. The method is simple, easy to control, efficient and low in energy consumption, and industrialized production is easy to achieve.

Description

(1) Technical field [0001] The invention belongs to the technical field of fixing and utilizing greenhouse gases, and relates to a method for converting greenhouse gases such as carbon dioxide into carbon. (2) Background technology [0002] In recent decades, due to the rapid increase of population and the rapid development of industry, the carbon dioxide produced by breathing and the carbon dioxide produced by burning fossil fuels have far exceeded the previous level. On the other hand, due to deforestation, a large number of farmlands have been built into cities and factories, destroying vegetation and reducing the conditions for converting carbon dioxide into organic matter through photosynthesis. These factors have led to the destruction of the dynamic balance of carbon dioxide production and transformation, increasing the carbon dioxide content in the atmosphere year by year. The content of carbon dioxide in the air continues to increase, and carbon dioxide is the main...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 梁初梁升夏阳黄辉陶新永甘永平张文魁张俊
Owner ZHEJIANG UNIV OF TECH
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