吸附、催化燃烧法治理有机废气的研究

RESEARCH ON DISPOSAL ORGANIC WASTE GAS BY METHOD OF ADSORPTION AND CATALYTIC COMBUSTION

介绍了试验工艺流程、主要设备、控制方法及试验结果．采用蜂窝状活性炭吸附浓缩，小风量热空气脱附催化燃烧的工艺，完成了处理风量25000～30000m3／h含苯系物废气的工业试验．研究结果表明：对苯系物吸附净化效率在90％左右，排放浓度＜100mg／m3，达到国家排放标准；用催化燃烧排放的热废气对蜂窝状活性炭脱附再生安全、有效、节能；催化燃烧过程可利用自身燃烧热进行或只耗少量电能；在国内首次实现工业微机对该工艺自动控制，解决了手工操作难以实现的控制过程，数据采集方便，准确．该方法具有设备体积小、耗能低、维修操作方便等特点，是治理低浓度、大风量有机废气的可行办法．

This article introduces experimental process, principal equipment, control methods and experimental results. Applying Honeycomb Activated Carbon (HAC) to adsorb and concentrate, desorbing with thermal air of small wind rate and catalytic combustion, the industrial experiments have been finished to dispose the waste gas that includes series of benzene compound with treatment capacity of 25000~30000m3/h. The results show that the efficiency purifying series of benzene compound by adsorption is about 90%, discharge concentration is lower than 100 mg/m3 and meet the national discharge standard, this method is safe, efficient and energy-saving, the process of catalytic combustion can use the heat energy of combustion by itself or only consume a little power. We also use industrial computer to control the whole process automatically for the first time in China, so it achieves the process which is difficult to control by manual operation. Data collection is convenient and accurate. This method has many characteristics, such as small equipment volume, low energy consumption, easy to operate and repair etc. It is an available method to dispose the low concentration and large wind rate organic waste gas.