Regenerating hydrocarbon containing carbon black with simultaneous recovery of globular petroleum coke

摘要

Hydrocarbons contaminated with carbon black, such as have been employed for quenching carbon-black-containing gases, are regenerated by passing them into contact with an indirectly heated and mechanically agitated bed of petroleum coke maintained at a temperature at least as high as the upper limit of the boiling range of the hydrocarbon. The separated carbon black may be withdrawn in the form of globular petroleum coke. The bed may be kept in motion by means of a stirrer or by employing an externally heated rotary kiln.ALSO:Carbon black prepared when hydrocarbons are cracked to produce synthesis gas &c., is washed from these gases with a hydrocarbon oil and the slurry formed passed to an externally heated, mechanically agitated bed of petroleum coke particles where the oil is vaporized and the carbon black withdrawn from the bed in the form of small globular particles.