Experimental Study for Biogas Upgrading by Water Scrubbing with Adsorption Materials Used for Scrubber Packing

摘要

China have the biggest biogas yield in the world, but biogas quality is low and the utilizations of biogas are monotonous now, the shorting of appropriate upgrading technologies is impeding the developing and high quality using of biogas. With analog biogas as raw material, this study investigated biogas upgrading by water scrubbing with adsorption materials used for scrubber picking. Three sorts of packing-plastic hollow sphere, clay ring and zeolite pellet were chosen for the test and the experiments were operated under various pressures (0.65MPa, 0.5MPa and 0.3MPa). The results showed that the adsorption packing could improve biogas upgrading effect, the removal rate of CO_2 were better when use zeolite pellet(which have better adsorption) as packing compared with conventional plastic hollow sphere, and the results of clay ring(which have little adsorption) experiments were between the above two.