REGENERATION PROCESS AND FACILITIES OF SPENT ACTIVATED CARBONS

摘要

This invention relates to a regeneration process and facilities of spent activated carbons, the process being characterized by pyrolyzing in the low temperature range of between 200 °C and 800 °C, the facilities by comprising 1) a feeding section; 2) a reaction section in which pollutants attached to the spent activated carbons are removed by heat treatment, and which comprises a rotary kiln and a heating chamber, the heating chamber being located in the middle or downstream part of the rotary kiln and able to indirectly heat up the spent activated carbon traveling through the rotary kiln by heating its shells from outside; 3) a cooling section; and 4) CO2 or CO2 mixture gasstorages/supply section. The invention will prevent the loss and adsorption capacity reduction of activated carbon, will facilitate the improvement of hardness, recovery rate, and restoration of the adsorption capacity, and will enable the simplification of the facilities.