煤气净化过程中剩余氨水、富液除油新技术

针对山西焦化股份有限公司90万t/a焦炉易地改造工程中煤气净化车间剩余氨水、富液带油严重,造成蒸氨脱酸板式换热器频繁堵塞的现象,采用气浮除油技术和微孔陶瓷过滤技术对剩余氨水、富液系统进行了改造。改造后系统运行稳定,系统中压蒸汽消耗量减少2.0 t/h,剩余氨水脱油率达到80.0%以上;过滤器后含油质量浓度降至10 mg/L以下,除油率稳定在80.0%以上,过滤器后悬浮物质量浓度稳定在20 mg/L以下。

A new technology for oil removal from surplus ammonia water and rich liquid

In view of large amount of oil in surplus ammonia water and rich liquid from coke oven gas purifying plant of 900kt/a in coke oven modification project in Shanxi Coking Co.,Ltd.,which results in blocking in plate heat exchanger for ammonia stripping and acid removing frequently.The technological modification has been done to surplus ammonia water and rich liquid systems by adopting AF oil removal and microvoid ceramic filteration technology.The modified process runs steadily,the consumption of medium-pressure steam could be reduced by 2.0 t/h,the oil removal rate of oil in surplus ammonia water is more than 80.0%;the mass content of oil through the filter is decreased to less than 10 mg/L,the mass content of suspended matter through filter is less than 20 mg/L.