| 摘要 |
food, chemical industries and municipal service. SUBSTANCE: method comprises carbonization of charcoal by heating it to 830 C and activation by supplying steam, supply of steam for activation purposes is carried out at temperature of 150 C and pressure of 4-6 atm and activated carbon temperature is reduced to 750 C and carbonization and activation are then repeated, and greater blue methylene capacity is attained. EFFECT: more efficient preparation method. 1 tbl |
