Photocatalytic reduction waste gas integrated circulating treatment device and use method thereof

Abstract

The invention relates to a photocatalytic reduction waste gas integrated circulating treatment device and a use method thereof. The photocatalytic reduction waste gas integrated circulating treatment device comprises a gas fractionator, a sublimation chamber, a pressure chamber, a liquid phase reaction chamber and a waste gas recovery device, wherein an outlet of the gas fractionator is connected with the sublimation chamber, the sublimation chamber is connected with the pressure chamber, the pressure chamber is connected with the liquid phase reaction chamber, the liquid phase reaction chamber is connected with the waste gas recovery device, the waste gas recovery device is connected with a gas inlet of the gas fractionator, and the gas fractionator is further provided with a waste gas inlet. Carbon dioxide and nitrogen oxide can be efficiently separated from industrial waste gas, carbon dioxide and nitric acid existing in a solution can be fully reacted in the liquid-phase reaction chamber to generate methanol, nitrogen, oxygen and other products, internal circulation of carbon dioxide can be achieved in the device, and the nitrogen oxide can be efficiently separated from the industrial waste gas. Other gas products generated by the photocatalytic reduction reaction are separated, so that the recycling rate of carbon dioxide in the industrial waste gas is increased.

Description

technical field [0001] The invention relates to the technical field of photocatalysis and carbon dioxide reduction, and mainly relates to a photocatalytic reduction exhaust gas integrated circulation treatment device and a use method thereof. Background technique [0002] In the process of social development, the extensive use of fossil fuels has greatly promoted the development of productivity, but at the same time it has also emitted a lot of carbon dioxide and nitrogen oxides, causing serious environmental problems. In order to protect the environment and reduce the emission of pollutants, new concepts such as carbon peaking and carbon neutrality have been proposed, but the traditional waste gas treatment method is inefficient and cannot meet the demand. Photocatalytic reduction is an emerging method for treating pollutants. And convert the technology of reuse, which can convert pollutants into usable resources or substances that are not harmful to the environment while r...

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Problems solved by technology

[0002] In the process of social development, the extensive use of fossil fuels has greatly promoted the development of productivity, but at the same time it has also emitted a lot of carbon dioxide and nitrogen oxides, causing serious environmental problems

In order to protect the environment and reduce the emission of pollutants, new concepts such as carbon peaking and carbon neutrality have been proposed, but the traditional waste gas treatment method is inefficient and cannot meet the demand. Photocatalytic reduction is an emerging method for treating pollutants. And transform reuse technology, which can convert pollutants into usable resources or environmentally friendly substances while reducing pollutants

However, conventional photocatalytic reduction is often limited by factors such as gas phase reactions or products that cannot be eliminated in time, which makes the efficiency of photocatalytic reduction not high, and cannot continuously reduce pollutants, and the cost is high

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