摘要
以扬子石化炼油厂80万吨/年催化裂化装置再生器为研究对象,模拟设计了1套以流化床燃烧器为核心的小型FCC待生催化剂再生试验系统,依据FCC工业运行的实际情况,研究了FCC再生过程中温度、压力、过剩空气系数等重要参数对NOx生成规律的影响。试验结果表明:炉内温度和过剩空气系数的提高使得NOx的生成量增加,且低压下NOx的生成量增幅较大,高压下增幅较小;压力的增大使得含氮挥发分的析出受到了抑制,烟气在炉内停留时间延长,焦炭和CO等还原性介质对NOx的还原作用突显,这使得NOx的总体排放量呈下降趋势。
By detail operating parameters on FCC regenerator of Yangzi Petrochemical refinery 800 000 t/a FCCU,we designed a set of monotype fluidized bed combustor experimental system to simulate the actual operating conditions in industrial,and investigation the influence of temperature,pressure and excess air coefficient on NOx formation.The results showed that the higher temperature and excess air coefficient,the higher NOx emission.With the risen of pressure,the emission of N-volatile suppressed,and the stay time of flue gas extended,thus the carbon and the CO have a good reduction effect to NOx,so the NOx emission decrease notability.Finally,the lower excess air coefficient and higher pressure,the lower NOx emission.
出处
《锅炉技术》
北大核心
2011年第5期7-11,共5页
Boiler Technology
基金
国家"863"计划资助项目(2009AA05Z304)
关键词
FCC再生
NOX排放特性
压力
炉内温度
过剩空气系数
FCC regeneration
NOx emission characteristic
pressure
furnace temperature
excess air coefficient
作者简介
郑守忠（1969-），男，博士，主要从事电站锅炉的研究。
