Changhua Chen, a professor-level senior engineering, is the head of thermochemical Engineering Laboratory China Building Materials Equipment Group Co., LTD. He has long engaged in the research and development of cement low-carbon environmental protection and energy saving and emission reduction technology. He has led the creation of fluid-solid coupling superposition flow field calculation model, developed key technologies such as carbon enrichment by oxygen combustion and self-denitrification calciner. He has won more than 10 technology awards, authorized more than 50 patents, and published more than 20 papers.