快速床-湍流床催化裂化再生装置工艺参数对烟气中氮氧化物生成的影响

EFFECT OF PROCCESS PARAMETERS ON THE FORMATION OF NITROGEN OXIDES IN CATALYTIC CRACKING REGENERATION UNIT WITH FAST BED-TURBULENT BED

初步分析了催化裂化装置中氮氧化物(NO_(x))的形成机理,详细探讨了影响再生烟气中NO_(x)含量的因素,并在快速床-湍流床催化裂化再生工艺装置上进行工业试验,分析再生烟气温度、组分含量的交互作用,总结了再生工艺过程中NO_(x)的生成规律。通过改变再生器中的O_(2)、CO含量和串联再生器的各段温度等工艺条件,成功实现了对再生烟气中NO_(x)含量的有效控制,形成了高效、低成本的NO_(x)含量控制技术,指导再生工艺操作。在当前节能、减排的背景下,有望为降低催化裂化再生烟气污染物排放提供一种可替代的技术方案。

The formation mechanism of nitrogen oxide(NO_(x)) in catalytic cracking device was preliminarily analyzed,the factors affacting NO_(x) content in regeneration flue gas were discussed in detail,and the industrial test of the fast bed-turbulent bed regeneration process was carried out.The interaction of the temperature and component content of the regenerated flue gas was analyzed,and the rule of NO_(x) formation in the regeneration process was summarized.Effective control of NO_(x) content in the regeneration flue gas was achieved by changing the process conditions such as O_(2) and CO content in the regenerator and the temperature of each section of the regenerator in series.The high-efficiency and low-cost control technology of NO_(x) content was formed to guide the operation of regeneration process.Under the background of energy saving and emission reduction,it was expected to provide an alternative technology for reducing the pollutant emission from FCC regeneration flue gas.