FURNACE FOR HEAT TREATMENT OF CARBON-CONTAINING MATERIALS Russian patent published in 1997 - IPC

FIELD: production of activated carbons; heat treatment of materials in coal mining, graphite, construction and other industries; reactivation of waste carbon sorbents. SUBSTANCE: furnace has body with detachable cover and cylindrical retort mounted inside it on supports; furnace is also provided with heating system including heating element which is divided into three zones at independent control of heating. Besides that, furnace is provided with gaseous reagent inlet branch pipes and loading and unloading devices. Heating elements are zigzag in shape. They are mounted inside body along side walls. Relationship of height of heating element to diameter of retort is equal to 2.5-4.0. Furnace is provided with refractory heat insulation. When water steam is used as gaseous reagent, it is fed to inlet branch pipe through pipe located above one of rows of heating elements at distance equal to 0.55-0.65 of distance between upper edge of heating element and cover of retort. EFFECT: enhanced reliability. 2 cl, 2 dwg