Patent ID: 6585949
Filing Date: 2003-07-01
Classification: C01P,C09C,F28F

Abstract:
A process for producing carbon blacks comprising:forming a stream of combustion gases by reacting a preheated air stream with a fuel; passing the stream of combustion gases through a reactor; injecting feedstock into the stream of combustion gases at one or more points to form an effluent and start pyrolysis of the feedstock in the effluent; cooling the effluent after the formation of carbon blacks to stop pyrolysis and obtain a resultant carbon black stream comprising combustion gases and carbon black; passing the carbon black stream past a heat exchange surface to cool the carbon black stream; passing an air stream past the heat exchange surface to create the preheated air stream; further cooling the carbon black stream in a secondary cooler to a temperature that prevents damage to the means utilized for separating and collecting the carbon black product; and separating and collecting carbon black product, wherein the temperature difference between the heat exchange surface and the carbon black stream is not greater than 500Â° F.