净化含氮有机污染物的催化剂及工艺

Catalysts and Process for the Elimination of Organic Nitrogen Pollutants.

介绍了两种催化剂PCN-1,PCN-2型对含氮有机物如N,N-二甲基甲酰胺(DMF)、正丁胺、环己胺、苯胺、硝基苯等深度氧化的活性及控NO_x能力。实验结果表明,由PCN-1、PCN构成的双催化剂处理DMF或DMF与甲苯、DMF与甲乙酮的混合蒸气,其氧化活性和控NO_x能力比单一催化剂为好。在240—300℃温度范围即可完全氧化,控NO_x率达98％以上,净化气无色无臭。本工艺可用于PU合成革生产线烘道排气的净化处理。

Deep oxidation of volatile organic nitrogen pollutants such as N-dimethylformsmide (DMF) and butylamine could be achieved under the catalysis of PCN-1 and PCN-2. The activtiy of the two catalysts were studied. Experiment results show that the effect of a double bed composed of PCN-1 and PCN-2 is better than any single catalyst bedfor purifying DMF or the mixed vapors of DMF with toluene or methylethylacetone. The vapors could be com-pletly oxidized and basically no NOx came out at working temperature ranging from 240 to 300℃ . The purified stream was esentially odourless and colourless This technology proved to be suitable for the purification of exhaust gas in the process of producing PU synthetic leather.