石化污水场含烃废气催化燃烧降解研究

Study on catalytic combustion of hydrocarbon waste gas from petrochemical sewage treatment system in industrial scale

为消除石化污水场所逸散的烃类等有机挥发物对环境的危害,提出了采用浓度调整-吸附脱硫-催化燃烧组合工艺技术处理经封闭后有组织排放的废气的新工艺:用活性炭对废气总烃浓度进行调整,用Fe2O3吸附脱硫,用蜂窝状Pt、Pd、Ce多组分催化剂对废气进行催化燃烧。在中试研究的基础上,建立了一套3000m3/h的有机废气催化燃烧工业装置。工业试验结果表明,此组合工艺有机废气脱除率在95%以上,处理后的排放气可达到国家废气排放标准。

In order to remove the volatile organic compounds (VOC) pollution from the petrochemical sewage treatment system, a combined process of concentration adjustment, adsorption desulphurization and catalytic combustion was proposed to treat the waste gas, which was organized and sealed. The process includes the following procedures: (1) concentration adjustment of hydrocarbons with activated carbon; (2) adsorption desulphurization with Fe2O3; (3) catalytic combustion with honey comb-like composite catalysts of Pt, Pd and Ce. Based on the research in pilot plant, an industrial unit capable of treating 3000 m3/h of VOC for catalytic combusting organic waste gas was constructed. The industrial test results showed that the process was able to effectively remove above 95% of VOC, the gas after treatment met the exhausting requirements of the national standard.