燃烧法处理石化企业VOCs试验研究

Experimental research on volatile organic compounds(VOCs)treatment by combustion method in petrochemical industry

基于加热炉技术对石化企业VOCs进行直接燃烧处理,采用低温催化燃烧催化剂进行了相应试验。结果表明:催化燃烧法适用于于低浓度VOCs治理,热力燃烧法则适用于不同组成与浓度VOCs的综合治理;在温度≤320℃、空速≥12000 h-1的条件下,低温催化燃烧技术VOCs排放浓度可满足DB31/933—2015要求(≤70 mg/m^3);在VOCs浓度高达30000 mg/m^3情况下,经过750~850℃的热力燃烧技术处理后,VOCs排放浓度≤20 mg/m^3。

Volatile organic compounds(VOCs)in petrochemical industry was treated by direct combustion based on furnace technology.Corresponding experiments were carried out using the catalyst for low-temperature catalytic combustion.The results show that the catalytic combustion method is suitable for low concentration VOCs and the thermal oxidation method is suitable for VOCs with different concentrations and compositions.When the temperature≤320℃and air velocity≥12000 h-1,the VOCs concentration in the exhaust treated by low-temperature catalytic combustion is lower than 70 mg/m^3,which satisfied the integrate emission standards for air pollutants(DB31/933—2015).When VOCs concentraton is as high as 30,000 mg/m^3,after treated by thermal oxidation methodunder 750~850℃,the emission VOCs concentration will reduced to below 20 mg/m^3.