含有高锰酸钾氧化剂的空气净化器去除甲醛的应用研究

Application of Air Purifier Containing Potassium Permanganate Oxidant to Remove Formaldehyde

选用管状式反应器测试不同载体的高锰酸钾氧化剂在气密室内氧化气态甲醛的效果,并用板式反应器测试了氧化剂对甲醛的累计去除量。结果表明:载体选用活性氧化铝时高锰酸钾氧化甲醛的效果最好,其甲醛的累计去除量为理论值的42%;对管状式反应器中3种用量的氧化剂进行测试,当风量为300m^3/h时甲醛的一次通过率为21.88%～69.33%;氧化剂用量为1.25kg时管状式反应器的净化效能在合格级范围,氧化剂用量在2.5kg以上时管状式反应器的净化效能在高效级范围。通过对比分析风量为300m^3/h和600m^3/h时甲醛的一次通过率可知,风量为300m^3/h时氧化剂的性能较高。

The effects ofoxidation of gaseous formaldehyde with potassium permanganate oxidants with different kinds of carriers were investigated in a tubular reactor. It was tested in a plate reactor which was the accumulative amount of formaldehyde removal by oxidant. The experimental results showed that the oxidation of formaldehyde by potassium permanganate is the best when the carrier is active alumina. And the cumulative removal of formaldehyde is 42% of the theoretical value. The oxidants with three dosage in tubular reactor were tested. The primary pass rate of formaldehyde was 21.88% to 69.33% when air volume was 300m^3/h. The purification efficiency of the tubular reactor is within the qualification level when theamount of the oxidant is 1.25kg. The purification efficiency of the tubular reactor is in the high efficiency level when theamount of the oxidant is above 2.5kg. By comparing and analyzing the primary pass rate of formaldehyde at 300m^3/h and 600m^3/h, it can be seen that the oxidant has higher performance when the air volume is 300m^3/h.