Method and apparatus for wet pelleting carbon black

Claim 1

A PROCESS FOR MAKING CARBON BLACK AND WET PELLETING SAME COMPRISING SUBJECTING A HYDROCARBON FEED TO PARTIAL COMBUSTION AND PYROLYSIS TO FORM A GASEOUS STREAM CONTAINING CARBON BLACK, PASSING SAID STREAM THRU A CARBON BLACK RECOVERY SYSTEM INCLUDING A BAG FILTER TO SEPARATELY RECOVER LOOSE BLACK AND OFF-GAS; PASSING THE LOOSE BLACK TO A WET PELLETIZER TO FORM WET PELLETS; PASSING THE WET PELLETS THRU A GAS FIRED ROTARY DRUM DRYER TO DRY SAID PELLETS; PASSING OFF-GAS FROM SAID BAG FILTER TO SaID DRYER AND BURNING SAME THEREIN WITH ABOUT 5 TO 10 VOLUME PERCENT OF EXCESS AIR, WHEREBY THE RESULTING COMBUSTION GAS CONTAINS LESS O2 THAN REQUIRED TO FORM AN EXPLOSIVE MIXTURE WHEN ADMIXED WITH AFORESAID STREAM; PASSING RESULTING COMBUSTION GAS THRU THE DRUM OF SAID DRYER IN CONTACT WITH CARBON BLACK THEREIN WHEREBY CARBON BLACK DUST IS ENTRAINED IN SaID COMBUSTION GAS; AND PASSING THE EFFLUENT GAS FROM SAID DRUM, CONTAINING ENTRAINED CARBON BLACK, INTO SAID BAG FILTER IN ADMIXTURE WITH SAID STREAM TO RECOVER THE CARBON BLACK THEREFROM.