PROCESS FOR THE THERMAL CRACKING OF RESIDUAL HYDROCARBON OILS

摘要

Process for thermal cracking of residual hydrocarbon oils by 1) feeding the oil (1)(2) and a synthesis gas (14) to a thermal cracking zone (3), the gas having a temperature sufficiently high to maintain the temperature in the cracking zone (3) by means of direct heat exchange at 420-850 DEG C, 2) separating the cracked products into (a) a gas (5), (b) one or more distillates and (c) a cracked residue (6), 3) separating the cracked residue (6) into one or more heavy hydrocarbon oils poor in asphaltenes (18) and one or more heavy hydrocarbon oils rich in asphaltenes (18), 4) gasifying (19) the oil(s) rich in asphaltenes (18) in the presence of oxygen and steam to produce synthesis gas (21), and 5) applying synthesis gas from step (4)(21) as synthesis gas in step (1) (4).