油品装车排气深度净化治理技术研究

通过对装车排气达标治理技术对比分析,确定了采用低温柴油吸收-总烃均化-催化氧化工艺治理山东某石化企业汽油、喷气燃料装车排气。在吸收油流量15～20 m^3/h、吸收温度8～15℃、吸收压力0.2 MPa、催化氧化反应温度250～350℃及体积空速5 000～20 000 h^-1的操作条件下,研究了低温柴油吸收、总烃均化、催化氧化过程对汽油及喷气燃料装车排气治理的效果,净化气中非甲烷总烃排放质量浓度小于20 mg/m^3,苯、甲苯、二甲苯排放浓度低于仪器最低检出限,满足国家及地方标准排放要求。该装置的投资回收期约为5年,具有一定的经济效益和明显的环保效益。

STUDY ON DEEP PURIFICATION TECHNOLOGY OF LOADING EXHAUST GAS

The technology consisting of low-temperature diesel absorption-total hydrocarbon homogenization–catalytic oxidation was determined to treat the loading exhaust gas in a petrochemical enterprise of Shandong base on the analysis of control technologies of loading exhaust gas. The results indicated that at the operating conditions of the absorption oil flow rate of 15~20 m3/h，the absorption temperature 8~15 ℃，the absorption pressure 0.2 MPa， the catalytic oxidation temperature 250~350 ℃，and gas space velocity of catalytic oxidation 5 000~20 000 h-1, the concentration of non methane total hydrocarbon in the purified gas was less than 20 mg/m3，the emission concentration of benzene, toluene and xylene was lower than the limit of detection，and the purified gas meets the national and local discharge standards. The period of investment recovery was 5 years. The combined technology has a economic benefits and obvious environmental friendly.