›› 2018, Vol. 49 ›› Issue (4): 27-30.

• 加工工艺 • 上一篇    下一篇

SNCR选择性非催化还原法脱硝技术在重油催化裂化装置的运用

吴章柱,王澍,王本玲,戴琴荣,张磊,于兆臣   

  1. 中国石油广西石化公司
  • 收稿日期:2017-08-25 修回日期:2017-09-26 出版日期:2018-04-12 发布日期:2018-04-26
  • 通讯作者: 吴章柱 E-mail:wuzhangzhu@163.com

APPLICATION OF SELECTIVE NON-CATALYTIC REDUCTION (SNCR)TECHNOLOGY IN RFCC UNIT

Wu Zhangzhu,Wang Shu,Wang Benling,Dai Qinrong,Zhang Lei,Yu Zhaochen   

  • Received:2017-08-25 Revised:2017-09-26 Online:2018-04-12 Published:2018-04-26
  • Contact: Wu Zhangzhu E-mail:wuzhangzhu@163.com

摘要: 中国石油广西石化分公司采用美国GE公司的SNCR选择性非催化还原法脱硝技术,对3.5 Mt/a催化裂化装置的CO焚烧炉进行改造。结果表明: 使用SNCR工艺后,催化裂化装置出口烟气中NOx的质量浓度由改造前的200~400 mg/m3(标准状态),降低至70~130 mg/m3(标准状态),排放值满足《石油炼制工业污染物排放标准》中大气污染物NOx排放值不大于200 mg/m3(标准状态)的要求,实现了达标排放,并对催化裂化装置CO焚烧炉炉膛温度影响很小,对炉膛压力及对烟气脱硫装置外排污水的pH值和氨氮含量无影响。SNCR工艺操作简单,改造量小,物耗、能耗低,在氨逃逸量小于设计值8 mg/m3(标准状态)的情况下脱硝效率高达72%。

关键词: 重油催化裂化, SNCR, 烟气脱硝

Abstract: Selective non-catalytic reduction (SNCR) technology of GE Company is applied to the CO burner of 3.5 Mt/a RFCC unit in Guangxi Petrochemical Company,CNPC. The results showed that using SNCR process, the NOx emission in RFCC flue gas decreases from 200—400 mg/m3 (standard state)to 70—130 mg/m3(standard state)and meets the Emission standard of pollutants for petroleum refining industry in which NOx emission is not more than 200 mg/m3(standard state). It has little influence on the temperature of CO burner in RFCC unit. No effect on the pressure of the CO burner and pH and NH3-N of sewage in FGD unit is observed. The SNCR process is simple and easy to be revamped. The material and energy consumption is also low. The denitration efficiency is as high as 72% if ammonia escape is less than 8 mg/m3.

Key words: RFCC, SNCR, flue gas denitration