초록 ▼

A carbon reactivation apparatus has a fossil fuel kiln adjacent to a rotary dryer and flue gas from the kiln flows through the dryer co-currently with carbon particles to provide a more efficient process than previously known. The apparatus has a rotary kiln with a drum therein sloped downwards from

A carbon reactivation apparatus has a fossil fuel kiln adjacent to a rotary dryer and flue gas from the kiln flows through the dryer co-currently with carbon particles to provide a more efficient process than previously known. The apparatus has a rotary kiln with a drum therein sloped downwards from a feed end to a discharge end, a furnace shell surrounding at least a portion of the drum with a fossil fuel heater and hot gases from within the shell heat the rotary kiln. A rotary dryer slopes downwards from an inlet end to an outlet end and carbon particles to be reactivated are fed into the inlet end. Ducting from the shell surrounding the drum of the rotary kiln extends to the inlet end of the rotary dryer for hot gases to flow along the dryer to the outlet end in the same direction as the carbon particles. Carbon particles are discharged from the outlet end of the rotary dryer into the feed end of the rotary kiln, the carbon particles being separated from the hot gases in the rotary dryer, and there is an exhaust system to exhaust the hot gases from the outlet end of the dryer.

대표청구항 ▼

[ The embodiments of the present invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A method of reactivating carbon comprising the steps of:heating and circulating hot gases in a furnace shell surrounding at least a portion of a rotating drum within a rota

[ The embodiments of the present invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A method of reactivating carbon comprising the steps of:heating and circulating hot gases in a furnace shell surrounding at least a portion of a rotating drum within a rotary kiln;circulating the hot gases from the shell into an inlet end of a rotary dryer;feeding carbon particles to be reactivated into the inlet end of the rotary dryer, the rotary dryer sloping downwards from the inlet end to an outlet end;rotating the rotary dryer to assist moving the carbon particles towards the outlet end, and heating the carbon particles with the hot gases flowing through the rotary dryer in the same direction as the carbon particles;discharging the carbon particles from the outlet end of the rotary dryer to a feed end of the rotating drum within the rotary kiln, and separating the carbon particles from the hot gases in the rotary dryer;conveying the carbon particles through the rotating drum, the drum sloping downwards towards a discharge end, to heat the carbon particles as the drum is heated by the furnace shell, anddepositing the carbon particles from the discharge end of the rotating drum into a quench tank.