Experimental research of mercury removal efficiency by activated coke

Analyse the effect of different adsorbents on gaseous mercury adsorption,compare the adsorption capacity of different activated cokes on gaseous mercury.For the same activated coke,investigate the adsorption methods on mercury removal efficiency over time,influence of particle size and contact area on efficiency.The results show that,at the beginning of adsorption reaction,the adsorption rate is maximum,then decreases until saturate the activated coke.The saturation adsorption capacity of these two kinds of activated coke is 1.137 μg/g and 0.792 μg/g respectively.With the increase of activated coke quality,the adsorption efficiency and needed time for saturation increase.Changing methods,the maximum adsorption rate is raised from 20 percent to 40 percent,that means,the higher adsorbent and mercury ratio,the greater adsorption efficiency.Increase the contact area of adsorbent with mercury-containing gas can improve mercury removal efficiency.