Method and apparatus for producing active carbon by feeding elec

Details Method and apparatus for producing active carbon by feeding elec Method and apparatus for producing active carbon by feeding elec

1994-06-24

1995-06-13

Walsh, Donald P.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

With means applying electromagnetic wave energy or...

42218604, 423220, 423235, 423445R, 423460, 423461, B01J 1912, C01B 3112

Patent

active

054240395

ABSTRACT:
To produce active carbon particles by carbonizing a carbon based raw material in a steam atmosphere while feeding electricity to the raw material received in a rotary reactor, a plurality of electrical receiving rods are secured to the inner wall surface of a cylindrical wall of the rotary reactor in the equally-spaced relationship as seen in the circumferential direction. In operation, a certain intensity of electric current is fed to the electricity receiving rods via a plurality of electrodes and a plurality of electrode contacts to induce arc-discharging between the electricity receiving rods and the raw material received in the rotary reactor. To reliably prevent the temperature of the steam atmosphere from being abnormally elevated, carbon dioxide gas is introduced into a carbonizing chamber of the rotary reactor via a gas inflow pipe. To rotatably support the rotary reactor, the gas inflow pipe, a steam inflow pipe and a temperature sensor pipe, a rotary joint is disposed at the position located outside of a side wall of the rotary reactor. Nitrogen gas may be substituted for the carbon dioxide gas in order to attenuate the endothermic reaction arising in the rotary reactor. In addition, used active carbon particles can be re-activated in the carbonizing chamber of the rotary reactor by feeding electricity to the used active carbon particles via the electricity receiving rods.

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patent: 5242879 (1993-09-01), Abe et al.
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