某厂重油催化裂化装置采用两段催化剂再生技术,第一再生器属贫氧再生,再生烟气中一氧化碳含量较高,第二再生器属富氧再生,再生烟气中氧含量较高；两段再生烟气混合后温度达到670℃左右,在此温度下,一氧化碳会与氧气发生剧烈的燃烧反应,反应所产生的大量的反应热使烟气温度迅速 A plant catalytic cracking unit of heavy oil using two catalyst regeneration technology, the first regenerator is anaerobic regeneration, regeneration flue gas carbon monoxide content is higher, the second regenerator oxygen regeneration, regeneration flue gas oxygen content is higher; two Regeneration of flue gas mixture temperature reaches about 670 ℃, at this temperature, carbon monoxide and oxygen occur violent combustion reaction, the reaction of a large number of reaction heat to flue gas temperature rapidly