Charcoal microsphere cleaning method

• Main Authors: ZHANG DAKUI, XUE ZHANQIANG, WANG XIAONAN, ZHANG ZHAN, MU CHUNFENG
• Format: Patent
• Language: Chinese; English
• Published: 22.06.2018
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention relates to a charcoal microsphere cleaning method. Asphalt mother liquor containing middle phase charcoal microspheres after thermal polymerization is cooled to a temperature of 200 DEGC or below; the asphalt mother liquor is subjected to twice oil washing cleaning; centrifugation is performed; solid ingredients are remained; the materials are cooled to the room temperature; dimethylformamide is added into the solid ingredients according to the mass ratio of 1 to (2.5 to 3.5); the materials are heated to 70 to 80 DEG C; stirring is performed for 2 to 2.5h; then, centrifugation is performed for 10 to 15min under the condition of 3000 to 3500 r/min; solid ingredients are remained; acetone is added into the solid ingredients according to the mass ratio of 1 to (1 to 1.5); liquid is removed after stirring for 10 to 15h; residues are dried for 20 to 30h under the conditions of 80 to 90 DEG C; the charcoal microspheres are obtained. The charcoal microspheres with uniform particle diameter distribution