石化污水处理场有机废气分类治理技术应用  

Application of organic waste gas classification treatment technologyin petrochemical sewage yard

作　　者：谢泽明 许秋碧 何晓礼 廖昌建 赵磊 刘志禹 Xie Zeming;Xu Qiubi;He Xiaoli;Liao Changjian;Zhao Lei;Liu Zhiyu(Zhongke(Guangdong)Refinery&Petrochemical Company Limited,Zhanjiang,Guangdong 524139;SINOPEC(Dalian)Research Institute of Petroleum and Petrochemicals Co.,Ltd.,Dalian,Liaoning 116045)

机构地区：[1]中科(广东)炼化有限公司,广东省湛江市524139 [2]中石化(大连)石油化工研究院有限公司,辽宁省大连市116045

出　　处：《炼油技术与工程》2024年第7期61-64,共4页Petroleum Refinery Engineering

基　　金：中国石油化工股份有限公司资助项目(320079)。

摘　　要：根据不同废气源排放的废气流量与浓度的差异,将污水处理场有机废气分为5类,并采用低温柴油吸收-碱液吸收脱硫→脱硫及总烃浓度均化-催化氧化→洗涤-吸附→再生气催化氧化技术进行废气治理。废气1为中浓度VOCs(挥发性有机物)废气,密闭收集后输送至脱硫及总烃浓度均化-催化氧化段处理;废气2和废气3为高浓度VOCs废气,需经过柴油吸收-碱液吸收脱硫预处理后再与废气1一同输送至催化氧化段处理;废气4和废气5为低浓度VOCs废气,送入洗涤-吸附处理,吸附尾气达标后排放,吸附剂饱和后使用催化氧化的高温净化气进行热再生,再生产生的高浓度尾气进入脱硫及总烃浓度均化-催化氧化单元进行处理。治理后净化气中非甲烷总烃质量浓度小于15 mg/m^(3),苯、甲苯与二甲苯浓度均满足排放限值要求,H_(2)S质量浓度低于10 mg/m^(3),净化气污染物排放浓度满足环保排放标准要求。According to the differences in the flow rate and concentration of waste gas emitted by different waste gas sources,the organic waste gas from a petrochemical wastewater treatment plant is divided into five categories.The technologies of low-temperature diesel oil absorption-alkali absorption desulfurization-desulfurization and total hydrocarbon concentration homogenization-catalytic oxidation and washer-adsorption-regenerated gas catalytic oxidation are used for waste gas treatment.Exhaust gas 1 is medium concentration VOCs exhaust gas,which is collected and transported to the desulfurization and total hydrocarbon concentration homogenization-catalytic oxidation section for treatment.Exhaust gas 2 and exhaust gas 3 are high concentration VOCs exhaust gases,which need to be pre-treated with low-temperature diesel absorption-alkali absorption desulfurization before being transported together with exhaust gas 1 to the catalytic oxidation section for treatment.Exhaust gas 4 and exhaust gas 5 are low-concentration VOCs exhaust gas,which is sent into the washer-adsorption treatment,and the adsorption tail gas is discharged after reaching the standard.After the adsorbent is saturated,the catalytic oxidation of high-temperature purification gas is used for thermal regeneration,and the high-concentration tail gas generated by regeneration is processed into the desulfurization and total hydrocarbon concentration homogenization-catalytic oxidationunit.After treatment,the total concentration of non-methane hydrocarbons is less than 15 mg/m^(3).The concentrations of benzene,toluene and xylene all meet the emission limit requirements.The concentration of H_(2)S is less than 10 mg/m^(3).The results show that the pollutant emission concentration of purified gas meets the requirements of environmental protection emission standard.

关 键 词：石化 污水处理场 有机废气 低温柴油吸收 碱液吸收脱硫 总烃浓度均化 催化氧化 吸附 

分 类 号：O647.3[理学—物理化学] O643.36[理学—化学] X74[环境科学与工程—环境工程]