Oxy-fuel combustion system using carbon dioxide to adjust combustion temperature

Abstract

An oxygen-fuel combustion system using carbon dioxide to adjust combustion temperature comprises a blast furnace, a hot blast stove, an exhaust fan, an oxygen generator and a flue gas purifier, the hot blast stove is connected with the blast furnace, a gas inlet of the hot blast stove is communicated with a blast furnace gas pipe through a pipeline, and an air inlet of the hot blast stove is respectively communicated with an outlet of the exhaust fan and an outlet of the oxygen generator through a tee joint. An inlet of the exhaust fan is communicated with an outlet of the smoke purifier, an inlet of the smoke purifier is communicated with an air inlet pipe of the chimney, and an air inlet of the chimney is communicated with an air outlet of the hot blast stove through the air inlet pipe. The device is simple in structure, novel and unique in design, simple and practical, reduces the emission of carbon dioxide, is energy-saving and environment-friendly, and has good social and economic benefits.

Description

technical field [0001] The present invention relates to a combustion system, in particular to a full-oxygen combustion system that uses carbon dioxide to adjust the combustion temperature. Background technique [0002] Blast furnace hot blast stove combustion, so far, use solid fuel, liquid fuel or gas fuel as fuel for combustion, and use air to support combustion. However, this combustion method will emit a large amount of carbon dioxide, which will seriously pollute the environment and enhance the greenhouse effect. Moreover, when the calorific value of the gas fuel is not enough, it is necessary to increase the calorific value of gas, which increases the cost. too high. Therefore, in the case of ensuring normal production, how to reduce carbon dioxide emissions and ensure the combustion temperature required for production is an urgent technical problem to be solved. SUMMARY OF THE INVENTION [0003] In view of the above situation, in order to overcome the defects of t...

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to provide an all-oxygen combustion system that uses carbon dioxide to regulate the combustion temperature, which can not only reduce carbon dioxide emissions but also control the combustion temperature, and can effectively solve the existing problems. The problem of high carbon dioxide emissions from blast furnace hot blast stoves

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