Method for transforming carbon dioxide into chemical energy source substance

A technology of material and carbon powder, which is applied in the field of converting carbon dioxide into chemical energy materials, can solve the problems of inactivation due to carbon formation on the surface of the catalyst, difficulty in enlarging production capacity, and increasing environmental load, etc., so as to improve the conversion rate of CO2 and electric energy Effects of efficiency, stable CO production, and high power consumption

Active Publication Date: 2018-08-07
SICHUAN YIJIE TECH CO LTD
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Although the two technologies have been industrialized, both rely on the heat generated by burning carbonaceous substances to drive chemical reactions, which not only produce a large amount of CO 2 emissions, increasing the environmental load, and it is impossible to achieve CO 2 The ultimate goal of reducing emissions and converting renewable electrical energy into chemical energy
CO under development 2 Catalytic reforming of methane technology also converts CO 2 , but this process has not been broken through for a long time because it is difficult to overcome the deactivation of carbon on the catalyst surface
Cracking of CO by low-temperature non-equilibrium plasma under development 2 Technologies, such as slip arc plasma and dielectric barrier plasma technology, rely entirely on high-energy electrons colliding with CO 2 If it is cracked, it is difficult for the cracked gas to react with carbon-containing substances, and there are problems such as low reaction conversion rate, large power consumption, and difficulty in expanding production capacity.

Method used

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  • Method for transforming carbon dioxide into chemical energy source substance

Examples

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Comparison scheme
Effect test

Embodiment 1

[0042] Fill the coke particles in the fixed-bed reactor 8, close the reaction auxiliary gas 3, and gas 1 (Ar) with the flow velocity of 25L / min, gas 2 (CO 2 ) into 4 from 5 and 6 at a flow rate of 25L / min, turn on the plasma power supply 9, which is a DC discharge, adjust the output power to 14kW, and form a stable high-temperature CO in 4 with a temperature of 3100K 2 The plasma jet flows into the fixed-bed reactor 8, and the hot jet flows through the fixed-bed reactor 8 loaded with carbon in advance, and reacts with the carbon to generate CO, which flows out of the fixed bed. After 6 minutes, samples are taken at the gas analysis sampling point 10 for analysis and monitoring of the reaction product , and finally realize the conversion of CO with high efficiency and low energy consumption 2 For CO purposes, CO 2 The conversion rate can reach 95%, and the electric energy consumption for producing CO is 320kJ / mol (CO).

Embodiment 2

[0044] Coke particles are filled in the fixed bed reactor 8, and the gas 1 (N 2 ) at a flow rate of 25L / min, gas 2 (CO 2 ) into 4 from 5 and 6 respectively at a flow rate of 25L / min, turn on the plasma power supply 9, which is DC discharge, adjust the output power to 14kW, and form a stable temperature in 4 that is a high temperature CO of 3100K 2 Plasma jet flow out 4, flow into fixed bed reactor 8, open reaction auxiliary gas 3 (H 2 ), send hydrogen gas into the hot plasma jet at a flow rate of 25L / min and complete the reaction in the fixed bed reactor 8 to generate CO. After 6 minutes, take a sample at the gas analysis sampling point 10 to analyze and monitor the reaction product, and finally realize the high efficiency of electric energy. , low energy consumption to convert CO 2 For CO purposes, CO 2 The conversion rate can reach 60%, and the electricity consumption for producing CO is 900kJ / mol (CO).

Embodiment 3

[0046] Coke particles are filled in the fixed bed reactor 8, and the gas 1 (N 2 ) at a flow rate of 25L / min, gas 2 (CO 2 ) into 4 from 5 and 6 respectively at a flow rate of 25L / min, turn on the plasma power supply 9, which is DC discharge, adjust the output power to 14kW, and form a stable temperature in 4 that is a high temperature CO of 3100K 2 The plasma jet flows out 4, flows into the fixed bed reactor 8, and opens the reaction auxiliary gas 3 (CH 4 ), send methane into the hot plasma jet at a flow rate of 25L / min and complete the reaction in the fixed-bed reactor 8 to generate CO. After 6 minutes, take a sample at the gas analysis sampling point 10 to analyze and monitor the reaction product, and finally realize the high-efficiency electric energy , low energy consumption to convert CO 2 For CO purposes, CO 2 The conversion rate can reach 80%, and the electricity consumption for producing CO can be reduced to 400kJ / mol (CO).

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Abstract

The invention discloses a method for transforming CO2 into a chemical energy source substance. The method includes the steps: (1) performing disruptive discharge on CO2 gas to form high-temperature CO2 plasma jet with the temperature of 2000-5000K under the action of an electric field; (2) further transforming CO2 in the CO2 plasma jet obtained in the step (1) into CO in a fixed bed reactor filledwith carbonaceous substances or aluminum oxide particles. CO2 plasma comprises non-cracked CO2 and CO, O and O2 generated by cracking. Ingeniously, the carbonaceous substances rapidly devour oxygen in cracked gas by the aid of the high-temperature environment of the high-temperature CO2 plasma jet, the carbonaceous substances react with non-cracked CO2 and are transformed into CO, heat energy carried by the CO2 plasma jet is sufficiently used, temperature is rapidly reduced, reverse reaction is effectively avoided by temperature reduction and oxygen decrease, stable CO production is realized,and CO2 transformation rate and electric energy use efficiency are greatly increased.

Description

technical field [0001] The present invention relates to a CO 2 A method of converting into chemical energy substances. Background technique [0002] With the continuous use of fossil energy (oil, natural gas and coal), it inevitably brings two serious problems. One is the energy crisis caused by the gradual reduction of reserves of fossil energy due to the non-renewability of fossil energy, and the other is that the extensive use of fossil energy leads to the increasing concentration of carbon dioxide in the atmosphere and causes the greenhouse effect. Therefore, sustainable energy, such as solar energy, nuclear energy, water energy, wind energy, etc. will become the main energy source in the future. However, this kind of energy is physical energy, which is usually obtained in the form of electric energy, which not only has time and space limitations in supply, but also cannot meet the needs of human society for hydrocarbon chemical raw materials. [0003] In order to sol...

Claims

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Application Information

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IPC IPC(8): C01B32/40
CPCC01B32/40
Inventor 印永祥沈俊杨涛刘雪松刘朋
Owner SICHUAN YIJIE TECH CO LTD
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