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提高单段催化裂化再生系统的再生效率和改善再生效果的控制因素是改善空气分布、待生催化剂分布、待生催化剂与空气的有效接触。通过改进单段同轴式沉降再生器内待生催化剂分配器、主风分配器、外取热返回口催化剂分配锥的结构，并运用于中原石油勘探局炼油化工总厂改造设计工程中，取得了理想效果。指出设计优良、载荷可变的单段再生器具有很好的操作灵活性，可加工范围很宽的原料；CO部分燃烧单段逆流再生器比两段再生器需要较少的催化剂补充量，这是降低水蒸汽和减少钒迁移的结果；逆流再生器比其他再生器产生的NOx排放少；单段再生器比两段再生器设计、操作简单，节省投资。
Control factors that improve the regeneration efficiency of the single-stage catalytic cracking regeneration system and improve the regeneration effect are to improve the air distribution, the distribution of the spent catalyst, and the effective contact between the spent catalyst and the air. By improving the single-stage coaxial subsidence regenerator to be born catalyst distributor, the main wind distributor, take the heat return port catalyst distribution cone structure, and used in the Central Plains Petroleum Exploration Bureau Refining and Chemical Plant reconstruction design project, made The ideal effect. It is pointed out that a single-stage regenerator with excellent design and variable load has good operation flexibility and can process a wide range of raw materials. The CO partial-combustion single-stage countercurrent regenerator requires less catalyst replenishment than the two-stage regenerator. Is to reduce the water vapor and reduce the migration of vanadium results; reverse regenerator NOx emissions than other regenerators produce less; single regenerator than the two regenerator design, simple operation, saving investment.