SNAR除酸脱硝技术在浙石化蜡油催化裂化装置的应用  

Application of SNAR Acid and Nitrogen Removal Technology in the Catalytic Cracking Unit of Zhejiang Petrochemical's Wax Oil

作　　者：王金生 李超 康浩 刘建 郑小辉 张欣 王国刚 Wang Jinsheng;Li Chao;Kang Hao;Liu Jian;Zheng Xiaohui;Zhang Xin;Wang Guogang(Zhejiang Petroleum&Chemical Co.,Ltd.,Zhoushan Zhejiang 316200,China;Qingdao Huicheng Environmental Protection Technology Group Co.,Ltd.,Qingdao Shandong 266500,China)

机构地区：[1]浙江石油化工有限公司,浙江舟山316200 [2]青岛惠城环保科技集团股份有限公司,山东青岛266500

出　　处：《山西化工》2024年第10期160-163,181,共5页Shanxi Chemical Industry

摘　　要：浙江石油化工有限公司300万t/a蜡油催化裂化装置外排烟气因硫酸气溶胶含量较高,导致颗粒物浓度超标,联合青岛惠城环保科技集团股份有限公司进行一种SNAR除酸脱硝工艺技术的工业应用试验。利用气力输送将固体粉末状还原剂喷入催化装置的烟道,固体还原剂分解为气态还原性物质,与SO_(3)和NO_(x)发生反应。工业应用结果表明,可大幅度降低SO_(3)浓度,SO_(3)脱除率为41.1%~57.7%,从而降低外排烟气中的硫酸盐气溶胶颗粒物的含量,保证颗粒物达标排放,并显著改善了工业烟气拖尾情况。同时NO_(x)脱除率可达50%~70%。该工业应用研究表明,SNAR除酸脱硝工艺具有很高的除酸脱硝效果,同时未对生产线设备产生腐蚀等不良影响,为催化裂化设备安全运行增加了经济收益和环保效益,具有一定应用前景。Due to the high content of sulfuric acid aerosols in the exhaust gas of the 3 million t/a wax oil catalytic cracking unit of Zhejiang Petroleum&Chemical Co.,Ltd.,the particulate matter concentration exceeded the standard.In conjunction with Qingdao Huicheng Environmental Protection Technology Group Co.,Ltd.,an industrial application test of SNAR acid removal and denitrification process technology was conducted.Using pneumatic conveying to spray solid powdered reducing agent into the flue of the catalytic device,the solid reducing agent decomposes into gaseous reducing substances,which react with SO_(3) and NO_(x).The industrial application results show that the concentration of SO_(3) can be significantly reduced,with a SO_(3) removal rate of 41.1%~57.7%,thereby reducing the content of sulfate aerosol particles in the exhaust gas,ensuring that the particles meet the emission standards,and significantly improving the tailing situation of industrial flue gas.At the same time,the NO_(x) removal rate can reach 50%~70%.The industrial application research shows that the SNAR acid and denitrification process has a high acid and denitrification effect,and does not have adverse effects such as corrosion on production line equipment,which increases economic and environmental benefits for the safe operation of catalytic cracking equipment and has certain application prospects.

关 键 词：催化裂化 硫酸气溶胶 蓝色烟羽 SO_(3) 氮氧化物 

分 类 号：TE96[石油与天然气工程—石油机械设备] X742[环境科学与工程—环境工程]