炼油厂恶臭废气综合治理技术的研究Ⅱ.装车装船逸散废气治理技术

研究了炼油厂装车装船排放气组成和排放规律,对装载场合废气收集方式、引气控制、治理技术进行了分析和工业化试验研究。结果表明:装车装船逸散废气中非甲烷总烃浓度随装卸时间的延长而逐渐升高,废气收集采用引气式压力控制能实现流量自动控制;采用低温馏分油临界吸收-吸附技术对码头装船逸散废气进行回收治理,净化气中非甲烷总烃浓度低于6.1×10~3 mg/m~3,非甲烷烃总烃净化效率大于99.3%;采用低温馏分油临界吸收-催化氧化技术对装车栈台逸散废气进行回收净化治理,净化气中非甲烷总烃浓度不大于7.9mg/m~3,净化效率接近100%。

COMPREHENSIVE TREATMENT TECHNOLOGY FOR ODOUR POLLUTION OF WASTE GAS IN REFINER II. STUDY OF TREATMENT TECHNOLOGY FOR WASTE GAS FROM LOADING

The compositions and behavior of emission gas from loading in refineries were investigated. The industrial technologies applied in waste gas collection at loading sites, gas entraining control, and treating process were analyzed. The results showed that the NMHC concentration increases gradually during loading, the automatic flow control can be realized by adopting gas-intake pressure control. The discharged waste gas at the dock loading was purified by the low temperature distillate oils absorption and adsorption technique, the NMHC concentration can be reduced to lower than 6.1×104 mg/m3, and purification efficiency reaches as high as 99.3%. By low temperature distillate oils absorption and catalytic oxidation for waste gas from loading rack, the NMHC concentration in purified gas is lower than 7.9 mg/m3, and purification efficiency closes to 100%.