Study On Preparation Of Adsorbent-catalyst From Lignite And Its Performance Of Denitration

In this work, the purpose was to prepare novel NO removal catalysts at lowtemperature based on the coke fines and lignite. The experiments were as follows:the deashing experiment, the FTIR and TG-DSC tests of modified semi-cokes atdifferent distillation temperature, the acid and alkali functional groups determinationtest on the surface of semi-cokes, the tests of iodine value, pore size and mechanicalstrength on the activated cokes with additives, the bond forming test of coke fines.The activated coke from coke fines and lignite was loaded with activecomponents(Fe, Cu, Mn) by impregnation method. The NO removal experiment wastested using semi-cokes and activated cokes as catalysts. The main results showedthat the optimum activation process condition and proportion of coke fines withactivated cokes. The proportion of pore in the range of17-25nm improved aftermixed with20%coke fines. The semi-cokes with various ways treated had differentacid and alkali functional groups contents. The activated cokes with Cu activecomponents had best efficiency of NO removal that kept85%in30min. Itsdenitration activity manifested low temperature adsorption and high temperaturereduction. The oxygen functional groups of activated cokes could supply oxygensource for denitration reaction of SCR and without ammonia.