Carbon dioxide and oxygen gas mixing device and mixed gas combustion-supported polluted gas zero emission system

Abstract

The invention relates to the field of combustion and environmental protection and in particular relates to a carbon dioxide and oxygen gas mixing device and a mixed gas combustion-supported polluted gas zero emission system. As gas participating combustion-support is oxygen and carbon dioxide mixed gas, oxygen participates combustion to generate carbon dioxide during full combustion, so that the content of carbon dioxide in tail gas is considerably high: 95% or above. Therefore, the recovery difficulty of carbon dioxide can be extremely reduced, and the cost of recovering carbon dioxide is also lowered, emission of carbon dioxide can be further extremely reduced, atmospheric pollution is reduced, and generation of greenhouse effect is alleviated; meanwhile, as participating combustion-support is oxygen and carbon dioxide mixed gas, massive nitrogen participating combustion is also avoided, so that emission of nitric oxides is avoided, and therefore, the atmospheric pollution is reduced, and moreover, generation of haze is also alleviated, and the combustion heat efficiency is increased.

Description

technical field [0001] The application relates to the fields of combustion and environmental protection, and in particular to a carbon dioxide and oxygen mixing device and a mixed gas combustion-supporting pollution gas zero-emission system. Background technique [0002] Due to the rapid development of urbanization and modern industry, the large-scale use of fuels such as coal, oil, and natural gas by humans, coupled with large-scale fires and the destruction of green vegetation, have led to an increase in the concentration of pollutants in the atmospheric environment year by year, causing Serious environmental pollution, severe climate change and extreme weather have been brought about, so reducing polluting gas emissions is a top priority. [0003] At present, the measures to reduce the emission of polluting gases are generally to increase the tail gas treatment system to treat the dust and harmful gases in the tail gas, and then discharge the treated tail gas into the atm...

AI Technical Summary

Problems solved by technology

However, due to the fact that air participates in combustion in the combustion process, nitrogen in the air accounts for 78.084% of the total volume of air, oxygen accounts for 20.948%, and the sum of other gases accounts for 0.68%. Nitrogen reacts with oxygen and produces a variety of nitrogen oxides, which not only pollute the air but also take away a lot of heat when discharged into the air, reducing the thermal efficiency of combustion, and because the volume of nitrogen in the tail gas is still large , so the concentration of harmful gases is low, and the difficulty of tail gas treatment is quite large

[0004] Since the current exhaust gas treatment system only treats sulfur oxides and nitrogen oxides, a large amount of carbon dioxide is discharged into the air. It is well known that carbon dioxide is a typical greenhouse gas, which causes air pollution and forms a terrible greenhouse. effect, but because the volume occupied by nitrogen and nitrogen oxides in the tail gas is large, and the volume occupied by carbon dioxide is small, it is difficult and costly to recover carbon dioxide in the tail gas

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