摘要
中国石油广西石化分公司采用美国GE公司的选择性非催化还原(SNCR)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NO_x的质量浓度由改造前的200~400mg/m^3(标准状态),降低至70~130 mg/m^3(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NO_x排放值不大于200mg/m^3(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8mg/m^3(标准状态)的情况下脱硝效率高达72%。
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/m 3(standard state)to 70-130 mg/m 3(standard state)and meets the emission standard of pollutants for petroleum refining industry in which NOx emission is not more than 200 mg/m 3(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/m 3.
作者
吴章柱
王澍
王本玲
戴琴荣
张磊
于兆臣
Wu Zhangzhu;Wang Shu;Wang Benling;Dai Qinrong;Zhang Lei;Yu Zhaochen(PetroChina Guangxi Petrochemical Company,Qinzhou,Guangxi 535008)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2018年第4期27-30,共4页
Petroleum Processing and Petrochemicals
