Other

Hajime Kitazato

Hiroaki Okajima

Masakazu Komori

Kazuyuki Shiga

Masashige Fukamachi

Shoiti Nojima

Akinori Kurima

Yoshiharu Tanaka

Spent activated-carbon is fluidized and directly heated at a temperature of 100.degree. to 700.degree. C in the first zone with an off gas from the second zone to remove volatiles from the spent carbon. The carbon so treated is then indirectly heated in the second zone at a temperature of 500.degree. to 1000.degree. C in the substantial absence of oxygen with a combustion gas while being fluidized with steam or a steam-containing inert gas to activate the carbon. The process ensures effective utilization of heat energy and substantially reduces the loss of carbon.

Process for reactivating spent activated-carbon

Growing community of inventors

Kanagawa, Japan

Hajime Kitazato