Supercritical pressurization of fuel slurry

摘要

A system (10) and a method for converting carbonaceous fuel (102) into a gaseous product (42). According to one embodiment a fuel slurry (118) is introduced into a chamber (120) and heated under sufficient pressure to prevent the carrier component (100) from boiling so that the carbonaceous component (102) does not separate from the carrier component (100). The step of heating the carrier component (100) may include increasing pressure and temperature to place the carrier component (100) in a supercritical state while sustaining the carbonaceous component (102) and carrier component (100) in a mixed state. In this embodiment a pump (136) imposes sufficient chamber pressure to prevent boiling of the carrier component (100) as the mixture is heated to at least 345° C., and a gasifier chamber (120) is positioned to receive the gaseous mixture (118) at a lower pressure than the supercritical pressure for creation of syngas (42).