Tandem quench

摘要

A method for increasing the aggregate size and structure of carbon blacks produced by a furnace carbon black reactor by lowering the temperature of, but not stopping pyrolysis in, the effluent (the mixture of combustion gases and feedstock in which pyrolysis is occurring), preferably up to about 800 degrees F., at a residence time between about 0.0 second and about 0.002 second downstream from the furthest downstream point of injection of feedstock.