Due to reducing coke burning amount at high catalyst flux, packing stripper was fit for oil becoming heavier and olefin producing via FCC.

• 填料型汽提器在高催化剂循环通量条件下仍可有效降低再生器烧焦量，正适合原油重质化和利用催化裂化生产低碳烯烃的发展趋势。