In the cement industry, PSA / VPSA oxygen generation system is used to produce high purity oxygen enriched gas auxiliary combustion technology, which can improve and concentrate the flame temperature, thus improving the temperature and blackness of the flame, enhancing the radiation and heat transfer capacity of the flame, accelerating the decomposition speed of the material, improving the combustion efficiency of the material, saving energy and reducing consumption, improving the quality of cement and prolonging the service life of the furnace.