Method of producing carbon black

Claim 1

A PROCESS FOR THE SIMULTANEOUS PRODUCTION OF CARBON BLACK AND MECHANICAL ENERGY WHICH COMPRISES MIXING A PRIMARY HYDROCARBON FUEL AND AIR IN PROPORTIONS SUCH THAT THE AIR IS PRESENT IN SUBSTANTIALLY THE AMOUNT REQUIRED FOR COMPLETE COMBUSTION OF SAID PRIMARY FUEL, INTRODUCING SAID PRIMARY FUEL/AIR MIXTURE INTO THE COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE, COMPRESSING SAID MIXTURE OF MEANS OF A RECIPROCATING PISTON, IGNITING SAID MIXTURE IN SAID COMBUSTION CHAMBER, INJECTING, SUBSEQUENT TO IGNITION OF SAID MIXTURE BUT PRIOR TO THE TIME SAID PISTON REACHES 10* AFTER TOP DEAD CENTER OF THE COMPRESSION STROKE, A SECONDARY HYDROCARBON FUEL INTO SAID COMBUSTION CHAMBER AT A SUPERATMOSPHERIC PRESSURE, THE RATIO OF SAID SECONDARY FUEL TO SAID PRIMARY FUEL BEING FROM ABOUT 0.5/1 TO ABOUT 2.5/1 IN TERMS OF WEIGHT; WHEREBY, IN THE SUBSTANTIAL ABSENCE OF OXYGEN, A REACTION TAKES PLACE TO FORM CARBON BLACK FROM SAID SECONDARY FUEL, SUBJECTING THE RESULTING MIXTURE TO A SUBSTANTIALLY ADIABATIC EXPANSION WHEREBY THE MIXTURE IS COOLED, REMOVING THE CARBON BLACK FROM SAID COMBUSTION CHAMBER, AND CONVERTING THE HEAT RELEASED BY SAID ADIABATIC EXPANSION INTO AVAILABLE MECHANICAL ENERGY.