"There is no doubt that oxygen-enriched combustion will increase the production of enterprises." Qi Yanyong, an associate professor at Southwest University of Science and Technology, said that as long as all production lines are oxygen-enriched, there is no doubt about increasing production. At the same time, oxygen-enriched combustion can also achieve the effect of energy saving by reducing the exhaust volume after combustion, thus reducing the heat taken away by flue gas.
In recent years, under the "double carbon" target, shrinking market demand and cost pressure, cement enterprises have accelerated the pace of energy saving and carbon reduction technology transformation. The implementation of energy-saving and carbon-reducing technological transformation in enterprises can not only reduce production costs, improve the competitiveness of enterprises, but also achieve the goal of energy-saving and consumption-reducing, which can be said to kill two birds with one stone. Oxygen-enriched combustion is one of the technologies to help enterprises save energy, reduce carbon, increase production and increase efficiency.
Conch Cement , Jidong Cement and other cement enterprises are also carrying out the development and application of oxygen-enriched combustion technology. For example, Conch Group vigorously promotes the application of energy-saving and environmental protection technologies such as high-efficiency dust collection equipment and oxygen-enriched combustion to comprehensively reduce emissions of nitrogen oxides, sulfur dioxide and particulate matter. Compared with the national emission standards of cement industry, the emission of all kinds of pollutants from conch is better than national standards, and the main emission indicators have been reduced by half or even lower.
Qi Yanyong mentioned that after the adoption of oxygen-enriched combustion, cement enterprises have done a good job in these two conditions, and it is no problem to save 3-5 kg of coal. Heat exchange of the
first kiln inlet system. After the oxygen-enriched combustion is adopted, the waste gas volume of the cement kiln is reduced, and the coal consumption is reduced, but if the coal is saved by 3-5 kilograms, the heat exchange of the preheater should be good firstly, and the combustion of the decomposition furnace should be sufficient secondly. Qi Yanyong said that if the combustion is insufficient and the concentration of carbon monoxide is high, the reduction of heat loss at the outlet of the preheater will be limited. Heat recovery at the head of
the second kiln. Qi Yanyong said that after the use of oxygen-enriched combustion, the temperature of clinker out of the kiln increases, if too much heat is brought out, but the heat is not recovered into the rotary kiln and decomposition furnace in the form of secondary or tertiary air, it can not be said to be direct energy saving. On July 6-7,
2023, China Cement Network will hold the " 2023 China Cement Energy Conservation and New Energy Development Conference " in Chongqing. At that time, Qi Yanyong, an associate professor of Southwest University of Science and Technology, will give a brilliant speech on the theme of "Ways and Operational Ideas to Reduce Coal Consumption in Firing System". For more information, please sign up!
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