ABSTRACT
In this process, coal and vacuum residua are mixed together into a slurry to produce clean fuel gas. The slurry fed into the pressurized gasifier is thermally cracked at a temperature of 850-950°C (1560-1740°F) and is converted into gas, tar, and char. The mixture of oxygen and steam in the lower zone of the gasifier gasifies the char. The gas leaving the gasif]er is quenched to a temperature of 450oC (840°F), the fluidized bed heat exchanger and is then scrubbed to remove tar, dust, and steam at around 200°C (390°F).
