选择性催化氧化—催化还原耦合技术净化有机胺废气  

Coupling technology of selective catalytic oxidation and catalytic reduction for purification of organic amine waste gas

作　　者：汪鹏 王学海 刘思佳 李宝忠 WANG Peng;WANG Xuehai;LIU Sijia;LI Baozhong(Sinopec(Dalian)Research Institute of Petroleum and Petrochemicals Co.,Ltd.,Dalian 116045,China)

机构地区：[1]中石化(大连)石油化工研究院有限公司,辽宁大连116045

出　　处：《化工环保》2025年第1期62-68,共7页Environmental Protection of Chemical Industry

基　　金：中国石油化工股份有限公司技术开发项目(H23017)。

摘　　要：采用自制的整体式蜂窝状Cu-Mn-Ce催化剂与FN-2型V-W/Ti脱硝催化剂级配组合,考察选择性催化氧化—催化还原耦合工艺对有机胺(乙醇胺和乙二胺等体积混合)废气的净化效果。实验结果表明:当体积空速10000 h^(-1)、有机胺质量浓度2000 mg/m^(3)、反应温度260℃时,在Cu-Mn-Ce催化剂的作用下,有机胺的非甲烷总烃转化率为96.4%,副产物中NH_(3)和NOx的选择性分别为13.67%和14.52%,二者的摩尔比接近于1;在催化氧化段体积空速6250 h^(-1)、催化还原段体积空速1000 h^(-1)、有机胺质量浓度1000 mg/m^(3)、反应温度260~280℃的条件下,经耦合工艺处理后,有机胺的非甲烷总烃转化率接近100%,反应器出口NH_(3)和N_(2)O未检出,NOx的选择性低于0.5%。The prepared Cu-Mn-Ce monolithic honeycomb catalyst and V-W/Ti denitration catalyst of FN-2 grade were combined to investigate the purified effect of the organic amine(ethanolamine and ethylenediamine)waste gas on the selective catalytic oxidation-catalytic reduction coupling technology.The test results indicate that at the condition of 1000 h^(-1)reaction space velocity,2000 mg/m^(3)inlet concentration,260℃reaction temperature,and Cu-Mn-Ce catalyst,the NMHC conversion of the organic amine waste gas reaches 96.4%,and the selectivity of the by-product of NH_(3)and NOx is 13.67%and 14.52%,respectively,with a molar ratio close to 1.At the condition of 6250 h^(-1)in the oxidation reaction stage,1000 h^(-1)in the reduction reaction stage,1000 mg/m^(3)inlet concentration and 260-280℃reaction temperature,NMHC conversion in the amine waste gas close to 100%by the coupling technology.NH_(3)and N_(2)O are not detected in the reactor outlet and the selectivity of NOx is lower than 0.5%.

关 键 词：有机胺废气 选择性催化氧化-催化还原 耦合反应 Cu-Mn-Ce催化剂 

分 类 号：X51[环境科学与工程—环境工程]