采用涡轮膨胀-活性炭纤维吸附工艺回收24万t/a过氧化氢装置氧化尾气中的重芳烃，这种联用技术避免了高浓度的重芳烃氧化尾气直接进入活性炭纤维机组，提高了吸附材料的使用寿命，且回收率得到提高。经测定氧化尾气处理后芳烃质量浓度稳定在70~80 mg/m³，常压设备VOC气体处理后芳烃质量浓度稳定在16~25 mg/m³，均达到环保排放标准，回收率达98.7%以上，处理效果明显。

A joint process combining turbine expansion with activated carbon fiber adsorption is used to recover heavy aromatics from the oxidation tail gas discharged from a 240 thousand tons per year hydrogen peroxide plant.This joint process can prevents high concentration of heavy aromatics-containing tail gas from entering directly into the activated carbon fiber adsorption unit,which hence enhances the lifespan of adsorption material and increases the recovery rate.It is determined that the concentration of heavy aromatics is stable at 70-80 mg·m^-3 in the oxidation tail gas that is treated by the joint process,and 16-25 mg·m^-3 in the tail gas that is treated by a normal pressure VOC treatment equipment,both meeting China's environmental protection standard.The recovery rate of heavy aromatic exceeds 98.7%,showing an obvious effect.

王耀斌(1968-),男,本科,高级工程师,研究方向为化工装置尾气处理,taihuawyb@126.con