水煤浆制备装置VOCs治理总结

Summary of VOCs Treatment in Coal Water Slurry Preparation Plant

我公司两套甲醇项目配备的水煤浆制备装置磨煤液体均采用下游系统有机废水回用参与磨煤,来实现减少污水处理负荷和降低处理水外排量。在磨煤过程中有机物挥发产生的严重异味损害操作人员健康,针对此情况甲醇厂采取磨煤中挥发的有机气体洗涤回收,增加活性炭吸附去除尾气异味的方式治理磨煤液挥发产生的异味问题。治理后实现了去除异味,排放气检测非甲烷总烃<50mg/Nm^(3)达标排放。

The coal pulverizing liquid in the coal water slurry preparation unit of our company's two sets of methanol projects adopts the reuse of organic wastewater in the downstream system to participate in coal pulverizing,so as to reduce the sewage treatment load and the discharge of treated water.In the process of coal grinding,the serious odor caused by organic matter volatilization damages the health of operators.In view of this situation,methanol plant adopts the method of washing and recovering volatile organic gas from coal grinding and increasing activated carbon adsorption to remove the odor of tail gas to treat the odor caused by coal grinding liquid volatilization.After treatment,the odor can be removed and the total non methane hydrocarbon detected by exhaust gas is less than 50mg/nm^(3) discharge up to standard.