PROCESS FOR PRODUCING FURNACE BLACK

摘要

The present invention provides in a process for producing furnace black by injecting oily crude soot material into a stream of hot combustion gases produced by reaction of fuel with reaction air, quenching and recovering the soot by separation from the flue gases while the reaction air is heated by means of the flue gases, the improvement in which the flue gases are burned with secondary air in a combustion device, the reaction air is heated therewith to temperatures between 600 and 1250.degree.C and the heated reaction air is introduced to produce the combustion gases.