| 摘要 |
PURPOSE:To obtain woody molded activated carbon of high quality without using a binder by crushing wood as a starting material, extrusion-molding the crushed wood after adjusting the water content, carbonizing the moldings by heating, and carrying out activation in a specified atmosphere. CONSTITUTION:Woody waste, etc. are crushed and classified. This crushed starting material having a prescribed grain size is dried to adjust the water content to about 12-18wt%, and the dried material is extrusion-molded at high temp. and pressure with a continuous compression molding machine or the like. The moldings are cut to form woody pellets, and the pellets are carbonized by heating at about 400-700 deg.C. The carbonized pellets are activated in a steam atmosphere at about 800-1,000 deg.C in a rotary kiln or the like to grow the porous structure of the pellets. By this method woody molded activated carbon having many pores and high adsorbing power is obtd. |
