METHOD AND REACTOR FOR PRODUCING CARBON BLACK Russian patent published in 1997 - IPC

FIELD: production of carbon black for use as filler for polymers and rubber. SUBSTANCE: method comprises steps of combustion of fuel-air mixture in combustion chamber, constricting combustion products flow in mixing nozzle, adding thereinto carbon-containing raw materials and water in amount 0.1-0.5 kg per kg of raw materials, and expanding flow reaction chamber. Inventive novelty of method resides in that portion of water is introduced into mixing nozzle in amount 0.02-0.09 kg per kg raw materials upon expiration of 0.0005-0.0009 s after feeding raw materials. Reactor for producing carbon black comprises, arranged in series and in coaxial relationship, combustion chamber provided with means for burning fuel-air mixture, mixing nozzle fitted with injectors for feeding raw materials and water, and reaction chamber with means for quenching finished black-gaseous products. Injectors are positioned at distance equal to 4-8 diameters of mixing nozzle from inlet for feeding raw materials. Besides, mixing nozzle of reactor is additionally provided with water jets disposed at distance equal to 1-1.95 diameter of mixing nozzle. EFFECT: environmentally safe method for carbon black production. 2 cl, 1 tbl, 3 dwg